.gitea/workflows/frontend_build-android.yaml

@@ -43,8 +43,10 @@ jobs:
       working-directory: ./frontend
 
     - name: Add required secrets
+      env:
+        ANDROID_SECRETS_PROPERTIES: ${{ secrets.ANDROID_SECRETS_PROPERTIES }}
       run: |
-        echo ${{ secrets.ANDROID_SECRETS_PROPERTIES }} > ./android/secrets.properties
+        echo "$ANDROID_SECRETS_PROPERTIES" >> ./android/secrets.properties
       working-directory: ./frontend
 
     - name: Sanity check

backend/Dockerfile

@@ -13,5 +13,6 @@ EXPOSE 8000
 # Set environment variables used by the deployment. These can be overridden by the user using this image.
 ENV NUM_WORKERS=1
 ENV OSM_CACHE_DIR=/cache
+ENV MEMCACHED_HOST_PATH=none
 
 CMD fastapi run src/main.py --port 8000 --workers $NUM_WORKERS

backend/Pipfile

@@ -14,3 +14,4 @@ shapely = "*"
 scipy = "*"
 osmpythontools = "*"
 pywikibot = "*"
+pymemcache = "*"

backend/Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "f0de801038593d42d8b780d14c2c72bb4f5f5e66df02f72244917ede5d5ebce6"
+            "sha256": "4f8b3f0395b4e5352330616870da13acf41e16d1b69ba31b15fd688e90b8b628"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -1102,6 +1102,15 @@
             "markers": "python_version >= '3.8'",
             "version": "==2.18.0"
         },
+        "pymemcache": {
+            "hashes": [
+                "sha256:27bf9bd1bbc1e20f83633208620d56de50f14185055e49504f4f5e94e94aff94",
+                "sha256:f507bc20e0dc8d562f8df9d872107a278df049fa496805c1431b926f3ddd0eab"
+            ],
+            "index": "pypi",
+            "markers": "python_version >= '3.7'",
+            "version": "==4.0.0"
+        },
         "pyparsing": {
             "hashes": [
                 "sha256:a1bac0ce561155ecc3ed78ca94d3c9378656ad4c94c1270de543f621420f94ad",
@@ -1142,12 +1151,12 @@
         },
         "pywikibot": {
             "hashes": [
-                "sha256:3f4fbc57f1765aa0fa1ccf84125bcfa475cae95b9cc0291867b751f3d4ac8fa2",
-                "sha256:a26d918cf88ef56fdb1421b65b09def200cc28031cdc922d72a4198fbfddd225"
+                "sha256:0dd8291f1a26abb9fce2c2108a90dc338274988e60d21723aec1d3b0de321b5e",
+                "sha256:7953fc4a6c498057e6eb7d9b762bbccb61348af0a599b89d7e246d5175b20a9b"
             ],
             "index": "pypi",
             "markers": "python_full_version >= '3.7.0'",
-            "version": "==9.2.1"
+            "version": "==9.3.0"
         },
         "pyyaml": {
             "hashes": [
@@ -1349,7 +1358,7 @@
                 "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d",
                 "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"
             ],
-            "markers": "python_version >= '3.8'",
+            "markers": "python_version < '3.13'",
             "version": "==4.12.2"
         },
         "tzdata": {
@@ -1658,11 +1667,11 @@
         },
         "xarray": {
             "hashes": [
-                "sha256:0b91e0bc4dc0296947947640fe31ec6e867ce258d2f7cbc10bedf4a6d68340c7",
-                "sha256:721a7394e8ec3d592b2d8ebe21eed074ac077dc1bb1bd777ce00e41700b4866c"
+                "sha256:1b0fd51ec408474aa1f4a355d75c00cc1c02bd425d97b2c2e551fd21810e7f64",
+                "sha256:4cae512d121a8522d41e66d942fb06c526bc1fd32c2c181d5fe62fe65b671638"
             ],
             "markers": "python_version >= '3.9'",
-            "version": "==2024.6.0"
+            "version": "==2024.7.0"
         }
     },
     "develop": {}

backend/src/constants.py

@@ -15,13 +15,21 @@ OSM_CACHE_DIR = Path(cache_dir_string)
 
 
 import logging
-import yaml
-
-LOGGING_CONFIG = LOCATION_PREFIX / 'log_config.yaml'
-config = yaml.safe_load(LOGGING_CONFIG.read_text())
-
-logging.config.dictConfig(config)
-
-# if we are in a debug session, set the log level to debug
+# if we are in a debug session, set verbose and rich logging
 if os.getenv('DEBUG', False):
-    logging.getLogger().setLevel(logging.DEBUG)
+    from rich.logging import RichHandler
+    logging.basicConfig(
+        level=logging.DEBUG,
+        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+        handlers=[RichHandler()]
+    )
+else:
+    logging.basicConfig(
+        level=logging.INFO,
+        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    )
+
+
+MEMCACHED_HOST_PATH = os.getenv('MEMCACHED_HOST_PATH', None)
+if MEMCACHED_HOST_PATH == "none":
+    MEMCACHED_HOST_PATH = None

backend/src/log_config.yaml

@@ -1,34 +0,0 @@
-version: 1
-disable_existing_loggers: False
-formatters:
-  simple:
-    format: '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
-handlers:
-  console:
-    class: rich.logging.RichHandler
-    formatter: simple
-  # access:
-  #   class: logging.FileHandler
-  #   filename: logs/access.log
-  #   level: INFO
-  #   formatter: simple
-
-
-
-
-loggers:
-  uvicorn.error:
-    level: INFO
-    handlers:
-      - console
-    propagate: no
-  # uvicorn.access:
-  #   level: INFO
-  #   handlers:
-  #     - access
-  #   propagate: no
-root:
-  level: INFO
-  handlers:
-    - console
-  propagate: yes

backend/src/main.py

@@ -1,12 +1,14 @@
 import logging
-from fastapi import FastAPI, Query, Body
+from fastapi import FastAPI, Query, Body, HTTPException
 
 from structs.landmark import Landmark
 from structs.preferences import Preferences
 from structs.linked_landmarks import LinkedLandmarks
+from structs.trip import Trip
 from utils.landmarks_manager import LandmarkManager
 from utils.optimizer import Optimizer
 from utils.refiner import Refiner
+from persistence import client as cache_client
 
 
 logger = logging.getLogger(__name__)
@@ -17,8 +19,8 @@ optimizer = Optimizer()
 refiner = Refiner(optimizer=optimizer)
 
 
-@app.post("/route/new")
-def get_route(preferences: Preferences, start: tuple[float, float], end: tuple[float, float] | None = None) -> str:
+@app.post("/trip/new")
+def new_trip(preferences: Preferences, start: tuple[float, float], end: tuple[float, float] | None = None) -> Trip:
     '''
     Main function to call the optimizer.
     :param preferences: the preferences specified by the user as the post body
@@ -27,15 +29,17 @@ def get_route(preferences: Preferences, start: tuple[float, float], end: tuple[f
     :return: the uuid of the first landmark in the optimized route
     '''
     if preferences is None:
-        raise ValueError("Please provide preferences in the form of a 'Preference' BaseModel class.")
+        raise HTTPException(status_code=406, detail="Preferences not provided")
+    if preferences.shopping.score == 0 and preferences.sightseeing.score == 0 and preferences.nature.score == 0:
+        raise HTTPException(status_code=406, detail="All preferences are 0.")
     if start is None:
-        raise ValueError("Please provide the starting coordinates as a tuple of floats.")
+        raise HTTPException(status_code=406, detail="Start coordinates not provided")
     if end is None:
         end = start
         logger.info("No end coordinates provided. Using start=end.")
 
     start_landmark = Landmark(name='start', type='start', location=(start[0], start[1]), osm_type='start', osm_id=0, attractiveness=0, must_do=True, n_tags = 0)
-    end_landmark = Landmark(name='end', type='finish', location=(end[0], end[1]), osm_type='end', osm_id=0, attractiveness=0, must_do=True, n_tags = 0)
+    end_landmark = Landmark(name='finish', type='finish', location=(end[0], end[1]), osm_type='end', osm_id=0, attractiveness=0, must_do=True, n_tags = 0)
 
     # Generate the landmarks from the start location
     landmarks, landmarks_short = manager.generate_landmarks_list(
@@ -47,22 +51,37 @@ def get_route(preferences: Preferences, start: tuple[float, float], end: tuple[f
     landmarks_short.insert(0, start_landmark)
     landmarks_short.append(end_landmark)
     
-    # TODO infer these parameters from the preferences
-    max_walking_time = 4    # hours
-    detour = 30             # minutes
-
     # First stage optimization
-    base_tour = optimizer.solve_optimization(max_walking_time*60, landmarks_short)
+    try:
+        base_tour = optimizer.solve_optimization(preferences.max_time_minute, landmarks_short)
+    except ArithmeticError:
+        raise HTTPException(status_code=500, detail="No solution found")
+    except TimeoutError:
+        raise HTTPException(status_code=500, detail="Optimzation took too long")
     
     # Second stage optimization
-    refined_tour = refiner.refine_optimization(landmarks, base_tour, max_walking_time*60, detour)
+    refined_tour = refiner.refine_optimization(landmarks, base_tour, preferences.max_time_minute, preferences.detour_tolerance_minute)
 
     linked_tour = LinkedLandmarks(refined_tour)
-    return linked_tour[0].uuid
+    # upon creation of the trip, persistence of both the trip and its landmarks is ensured. Ca
+    trip = Trip.from_linked_landmarks(linked_tour, cache_client)
+    return trip
 
 
+#### For already existing trips/landmarks
+@app.get("/trip/{trip_uuid}")
+def get_trip(trip_uuid: str) -> Trip:
+    try:
+        trip = cache_client.get(f"trip_{trip_uuid}")
+        return trip
+    except KeyError:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
 
 @app.get("/landmark/{landmark_uuid}")
 def get_landmark(landmark_uuid: str) -> Landmark:
-    #cherche dans linked_tour et retourne le landmark correspondant
-    pass
+    try:
+        landmark = cache_client.get(f"landmark_{landmark_uuid}")
+        return landmark
+    except KeyError:
+        raise HTTPException(status_code=404, detail="Landmark not found")

backend/src/parameters/landmark_parameters.yaml

@@ -1,6 +1,6 @@
 city_bbox_side: 5000 #m
 radius_close_to: 50
 church_coeff: 0.8
-park_coeff: 1.2
+park_coeff: 1.0
 tag_coeff: 10
 N_important: 40

backend/src/persistence.py

@@ -0,0 +1,26 @@
+from pymemcache.client.base import Client
+
+import constants
+
+
+class DummyClient:
+    _data = {}
+    def set(self, key, value, **kwargs):
+        self._data[key] = value
+
+    def set_many(self, data, **kwargs):
+        self._data.update(data)
+
+    def get(self, key, **kwargs):
+        return self._data[key]
+
+
+if constants.MEMCACHED_HOST_PATH is None:
+    client = DummyClient()
+else:
+    client = Client(
+        constants.MEMCACHED_HOST_PATH,
+        timeout=1,
+        allow_unicode_keys=True,
+        encoding='utf-8'
+    )

backend/src/structs/linked_landmarks.py

@@ -1,4 +1,3 @@
-import uuid
 from .landmark import Landmark
 from utils.get_time_separation import get_time
 
@@ -9,8 +8,7 @@ class LinkedLandmarks:
     """
     
     _landmarks = list[Landmark]
-    total_time = int
-    uuid = str
+    total_time: int = 0
 
     def __init__(self, data: list[Landmark] = None) -> None:
         """
@@ -19,7 +17,6 @@ class LinkedLandmarks:
         Args:
             data (list[Landmark], optional): The list of landmarks that are linked together. Defaults to None.
         """
-        self.uuid = uuid.uuid4()
         self._landmarks = data if data else []
         self._link_landmarks()
 
@@ -28,7 +25,6 @@ class LinkedLandmarks:
         """
         Create the links between the landmarks in the list by setting their .next_uuid and the .time_to_next attributes.
         """
-        self.total_time = 0
         for i, landmark in enumerate(self._landmarks[:-1]):
             landmark.next_uuid = self._landmarks[i + 1].uuid
             time_to_next = get_time(landmark.location, self._landmarks[i + 1].location)
@@ -44,18 +40,4 @@ class LinkedLandmarks:
     
 
     def __str__(self) -> str:
-        return f"LinkedLandmarks, total time: {self.total_time} minutes, {len(self._landmarks)} stops: [{','.join([str(landmark) for landmark in self._landmarks])}]"
-    
-
-    def asdict(self) -> dict:
-        """
-        Convert the linked landmarks to a json serializable dictionary.
-        
-        Returns:
-            dict: A dictionary representation of the linked landmarks.
-        """
-        return {
-            'uuid': self.uuid,
-            'total_time': self.total_time,
-            'landmarks': [landmark.dict() for landmark in self._landmarks]
-        }
+        return f"LinkedLandmarks [{' ->'.join([str(landmark) for landmark in self._landmarks])}]"

backend/src/structs/preferences.py

@@ -2,7 +2,6 @@ from pydantic import BaseModel
 from typing import Optional, Literal
 
 class Preference(BaseModel) :
-    name: str
     type: Literal['sightseeing', 'nature', 'shopping', 'start', 'finish']
     score: int          # score could be from 1 to 5
 
@@ -17,5 +16,5 @@ class Preferences(BaseModel) :
     # Shopping (diriger plutôt vers des zones / rues commerçantes)
     shopping : Preference
 
-    max_time_minute: Optional[int] = 6*60 
+    max_time_minute: Optional[int] = 6*60
     detour_tolerance_minute: Optional[int] = 0

backend/src/structs/trip.py

@@ -0,0 +1,30 @@
+from pydantic import BaseModel, Field
+from pymemcache.client.base import Client
+
+from .linked_landmarks import LinkedLandmarks
+import uuid
+
+class Trip(BaseModel):
+    uuid: str = Field(default_factory=uuid.uuid4)
+    total_time: int
+    first_landmark_uuid: str
+
+
+    @classmethod
+    def from_linked_landmarks(self, landmarks: LinkedLandmarks, cache_client: Client) -> "Trip":
+        """
+        Initialize a new Trip object and ensure it is stored in the cache.
+        """
+        trip = Trip(
+            total_time = landmarks.total_time,
+            first_landmark_uuid = str(landmarks[0].uuid)
+        )
+
+        # Store the trip in the cache
+        cache_client.set(f"trip_{trip.uuid}", trip)
+        cache_client.set_many({f"landmark_{landmark.uuid}": landmark for landmark in landmarks}, expire=3600)
+        # is equivalent to:
+        # for landmark in landmarks:
+        #     cache_client.set(f"landmark_{landmark.uuid}", landmark, expire=3600)
+
+        return trip

backend/src/tester.py

@@ -20,22 +20,13 @@ def test(start_coords: tuple[float, float], finish_coords: tuple[float, float] =
 
     
     preferences = Preferences(
-                    sightseeing=Preference(
-                                  name='sightseeing', 
-                                  type='sightseeing',
-                                  score = 5),
-                    nature=Preference(
-                                  name='nature', 
-                                  type='nature',
-                                  score = 5),
-                    shopping=Preference(
-                                  name='shopping', 
-                                  type='shopping',
-                                  score = 5),
+        sightseeing=Preference(type='sightseeing', score = 5),
+        nature=Preference(type='nature', score = 5),
+        shopping=Preference(type='shopping', score = 5),
 
-                    max_time_minute=180,
-                    detour_tolerance_minute=30
-                    )
+        max_time_minute=180,
+        detour_tolerance_minute=30
+    )
 
     # Create start and finish 
     if finish_coords is None :

backend/src/utils/landmarks_manager.py

@@ -15,17 +15,12 @@ from .take_most_important import take_most_important
 import constants
 
 
-SIGHTSEEING = 'sightseeing'
-NATURE = 'nature'
-SHOPPING = 'shopping'
-
 
 
 class LandmarkManager:
 
     logger = logging.getLogger(__name__)
 
-    city_bbox_side: int     # bbox side in meters
     radius_close_to: int    # radius in meters
     church_coeff: float     # coeff to adjsut score of churches
     park_coeff: float       # coeff to adjust score of parks
@@ -40,12 +35,17 @@ class LandmarkManager:
 
         with constants.LANDMARK_PARAMETERS_PATH.open('r') as f:
             parameters = yaml.safe_load(f)
-            self.city_bbox_side = parameters['city_bbox_side']
+            self.max_bbox_side = parameters['city_bbox_side']
             self.radius_close_to = parameters['radius_close_to']
             self.church_coeff = parameters['church_coeff']
             self.park_coeff = parameters['park_coeff']
             self.tag_coeff = parameters['tag_coeff']
             self.N_important = parameters['N_important']
+            
+        with constants.OPTIMIZER_PARAMETERS_PATH.open('r') as f:
+            parameters = yaml.safe_load(f)
+            self.walking_speed = parameters['average_walking_speed']
+            self.detour_factor = parameters['detour_factor']
 
         self.overpass = Overpass()
         CachingStrategy.use(JSON, cacheDir=constants.OSM_CACHE_DIR)
@@ -69,30 +69,33 @@ class LandmarkManager:
                 - A list of the most important landmarks based on the user's preferences.
         """
 
+        max_walk_dist = (preferences.max_time_minute/2)/60*self.walking_speed*1000/self.detour_factor
+        reachable_bbox_side = min(max_walk_dist, self.max_bbox_side)
+
         L = []
-        bbox = self.create_bbox(center_coordinates)
+        bbox = self.create_bbox(center_coordinates, reachable_bbox_side)
         # list for sightseeing
         if preferences.sightseeing.score != 0:
-            score_function = lambda loc, n_tags: int((self.count_elements_close_to(loc) + ((n_tags**1.2)*self.tag_coeff) )*self.church_coeff)  
-            L1 = self.fetch_landmarks(bbox, self.amenity_selectors['sightseeing'], SIGHTSEEING, score_function)
-            self.correct_score(L1, preferences.sightseeing)
+            score_function = lambda loc, n_tags: int((((n_tags**1.2)*self.tag_coeff) )*self.church_coeff)   # self.count_elements_close_to(loc) +
+            L1 = self.fetch_landmarks(bbox, self.amenity_selectors['sightseeing'], preferences.sightseeing.type, score_function)
             L += L1
 
         # list for nature
         if preferences.nature.score != 0:
-            score_function = lambda loc, n_tags: int((self.count_elements_close_to(loc) + ((n_tags**1.2)*self.tag_coeff) )*self.park_coeff)  
-            L2 = self.fetch_landmarks(bbox, self.amenity_selectors['nature'], NATURE, score_function)
-            self.correct_score(L2, preferences.nature)
+            score_function = lambda loc, n_tags: int((((n_tags**1.2)*self.tag_coeff) )*self.park_coeff)   # self.count_elements_close_to(loc) +
+            L2 = self.fetch_landmarks(bbox, self.amenity_selectors['nature'], preferences.nature.type, score_function)
             L += L2
 
         # list for shopping
         if preferences.shopping.score != 0:
-            score_function = lambda loc, n_tags: int(self.count_elements_close_to(loc) + ((n_tags**1.2)*self.tag_coeff))
-            L3 = self.fetch_landmarks(bbox, self.amenity_selectors['shopping'], SHOPPING, score_function)
-            self.correct_score(L3, preferences.shopping)
+            score_function = lambda loc, n_tags: int(((n_tags**1.2)*self.tag_coeff)) # self.count_elements_close_to(loc) +
+            L3 = self.fetch_landmarks(bbox, self.amenity_selectors['shopping'], preferences.shopping.type, score_function)
             L += L3
 
+
         L = self.remove_duplicates(L)
+        self.correct_score(L, preferences)
+
         L_constrained = take_most_important(L, self.N_important)
         self.logger.info(f'Generated {len(L)} landmarks around {center_coordinates}, and constrained to {len(L_constrained)} most important ones.')
 
@@ -123,7 +126,7 @@ class LandmarkManager:
         return L_clean
         
 
-    def correct_score(self, landmarks: list[Landmark], preference: Preference):
+    def correct_score(self, landmarks: list[Landmark], preferences: Preferences) -> None:
         """
         Adjust the attractiveness score of each landmark in the list based on user preferences.
 
@@ -132,20 +135,16 @@ class LandmarkManager:
 
         Args:
             landmarks (list[Landmark]): A list of landmarks whose scores need to be corrected.
-            preference (Preference): The user's preference settings that influence the attractiveness score adjustment.
-
-        Raises:
-            TypeError: If the type of any landmark in the list does not match the expected type in the preference.
+            preferences (Preferences): The user's preference settings that influence the attractiveness score adjustment.
         """
 
-        if len(landmarks) == 0:
-            return
-        
-        if landmarks[0].type != preference.type:
-            raise TypeError(f"LandmarkType {preference.type} does not match the type of Landmark {landmarks[0].name}")
-
-        for elem in landmarks:
-            elem.attractiveness = int(elem.attractiveness*preference.score/5)     # arbitrary computation
+        score_dict = {
+            preferences.sightseeing.type: preferences.sightseeing.score,
+            preferences.nature.type: preferences.nature.score,
+            preferences.shopping.type: preferences.shopping.score
+        }
+        for landmark in landmarks:
+            landmark.attractiveness = int(landmark.attractiveness * score_dict[landmark.type] / 5)        
 
 
     def count_elements_close_to(self, coordinates: tuple[float, float]) -> int:
@@ -191,12 +190,13 @@ class LandmarkManager:
             return 0
 
 
-    def create_bbox(self, coordinates: tuple[float, float]) -> tuple[float, float, float, float]:
+    def create_bbox(self, coordinates: tuple[float, float], reachable_bbox_side: int) -> tuple[float, float, float, float]:
         """
         Create a bounding box around the given coordinates.
 
         Args:
             coordinates (tuple[float, float]): The latitude and longitude of the center of the bounding box.
+            reachable_bbox_side (int): The side length of the bounding box in meters.
 
         Returns:
             tuple[float, float, float, float]: The minimum latitude, minimum longitude, maximum latitude, and maximum longitude
@@ -207,7 +207,7 @@ class LandmarkManager:
         lon = coordinates[1]
 
         # Half the side length in km (since it's a square bbox)
-        half_side_length_km = self.city_bbox_side / 2 / 1000
+        half_side_length_km = reachable_bbox_side / 2 / 1000
 
         # Convert distance to degrees
         lat_diff = half_side_length_km / 111  # 1 degree latitude is approximately 111 km
@@ -296,21 +296,26 @@ class LandmarkManager:
                         break
 
                     if "wikipedia" in tag:
-                        n_tags += 3             # wikipedia entries count more
+                        n_tags += 1             # wikipedia entries count more
 
-                    if tag == "wikidata":
-                        Q = elem.tag('wikidata')
-                        site = Site("wikidata", "wikidata")
-                        item = ItemPage(site, Q)
-                        item.get()
-                        n_languages = len(item.labels)
-                        n_tags += n_languages/10
+                    # if tag == "wikidata":
+                    #     Q = elem.tag('wikidata')
+                    #     site = Site("wikidata", "wikidata")
+                    #     item = ItemPage(site, Q)
+                    #     item.get()
+                    #     n_languages = len(item.labels)
+                    #     n_tags += n_languages/10
+                    if "viewpoint" in tag:
+                        n_tags += 10
 
                     if elem_type != "nature":
                         if "leisure" in tag and elem.tag('leisure') == "park":
                             elem_type = "nature"
+                    
+                    if elem_type == "nature":
+                        n_tags += 1 
 
-                    if landmarktype != SHOPPING:
+                    if landmarktype != "shopping":
                         if "shop" in tag:
                             skip = True
                             break
@@ -318,7 +323,6 @@ class LandmarkManager:
                         if tag == "building" and elem.tag('building') in ['retail', 'supermarket', 'parking']:
                             skip = True
                             break
-
                 if skip:
                     continue
 

frontend/android/app/build.gradle

@@ -61,7 +61,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.anyway"
+        applicationId "com.anydev.anyway"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
         // Minimum Android version for Google Maps SDK

frontend/android/app/src/main/kotlin/com/example/fast_network_navigation/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.anyway
+package com.anydev.anyway
 
 import io.flutter.embedding.android.FlutterActivity
 

frontend/lib/constants.dart

@@ -1,4 +1,4 @@
 const String APP_NAME = 'AnyWay';
 
-const String API_URL_BASE = 'https://anyway.kluster.moll.re';
+String API_URL_BASE = 'https://anyway.kluster.moll.re';
 

frontend/lib/layout.dart

@@ -1,3 +1,6 @@
+import 'dart:collection';
+
+import 'package:anyway/structs/landmark.dart';
 import 'package:flutter/material.dart';
 
 import 'package:anyway/constants.dart';
@@ -15,12 +18,12 @@ import 'package:anyway/pages/profile.dart';
 // A side drawer is used to switch between pages
 class BasePage extends StatefulWidget {
   final String mainScreen;
-  final Future<Trip>? trip;
-  
+  final Trip? trip;
+
   const BasePage({
     super.key,
     required this.mainScreen,
-    this.trip
+    this.trip,
   });
 
   @override
@@ -53,13 +56,13 @@ class _BasePageState extends State<BasePage> {
           children: [
             DrawerHeader(
               decoration: BoxDecoration(
-                gradient: LinearGradient(colors: [Colors.cyan, theme.primaryColor])
+                gradient: LinearGradient(colors: [Colors.red, Colors.yellow])
               ),
               child: Center(
                 child: Text(
                   APP_NAME,
                   style: TextStyle(
-                    color: Colors.white,
+                    color: Colors.grey[800],
                     fontSize: 24,
                     fontWeight: FontWeight.bold,
                   ),
@@ -129,9 +132,71 @@ class _BasePageState extends State<BasePage> {
   }
 }
 
-
-
-Future<Trip> getFirstTrip (Future<List<Trip>> trips) async {
-  List<Trip> tripsf = await trips;
-  return tripsf[0];
+// This function is used to get the first trip from a list of trips
+// TODO: Implement this function
+Trip getFirstTrip(Future<List<Trip>> trips) {
+  Trip t1 = Trip(uuid: '1', landmarks: LinkedList<Landmark>());
+  t1.landmarks.add(
+    Landmark(
+      uuid: '0',
+      name: "Start",
+      location: [48.85, 2.32],
+      type: start,
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: '1',
+      name: "Eiffel Tower",
+      location: [48.859, 2.295],
+      type: sightseeing,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Tour_Eiffel_Wikimedia_Commons.jpg/1037px-Tour_Eiffel_Wikimedia_Commons.jpg"
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: "2",
+      name: "Notre Dame Cathedral",
+      location: [48.8530, 2.3498],
+      type: sightseeing,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Notre-Dame_de_Paris%2C_4_October_2017.jpg/440px-Notre-Dame_de_Paris%2C_4_October_2017.jpg"
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: "3",
+      name: "Louvre palace",
+      location: [48.8606, 2.3376],
+      type: sightseeing,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Louvre_Museum_Wikimedia_Commons.jpg/540px-Louvre_Museum_Wikimedia_Commons.jpg"
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: "4",
+      name: "Pont-des-arts",
+      location: [48.8585, 2.3376],
+      type: sightseeing,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Pont_des_Arts%2C_6e_Arrondissement%2C_Paris_%28HDR%29_20140320_1.jpg/560px-Pont_des_Arts%2C_6e_Arrondissement%2C_Paris_%28HDR%29_20140320_1.jpg"
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: "5",
+      name: "Panthéon",
+      location: [48.847, 2.347],
+      type: sightseeing,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Pantheon_of_Paris_007.JPG/1280px-Pantheon_of_Paris_007.JPG"
+    ),
+  );
+  t1.landmarks.add(
+    Landmark(
+      uuid: "6",
+      name: "Galeries Lafayette",
+      location: [48.87, 2.32],
+      type: shopping,
+      imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/GaleriesLafayetteNuit.jpg/220px-GaleriesLafayetteNuit.jpg"
+    ),
+  );
+  return t1;
 }

frontend/lib/main.dart

@@ -13,7 +13,7 @@ class App extends StatelessWidget {
     return MaterialApp(
       title: APP_NAME,
       home: BasePage(mainScreen: "map"),
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: Colors.green),
+      theme: ThemeData(useMaterial3: true, colorSchemeSeed: Colors.red[600]),
     );
   }
 }

frontend/lib/modules/greeter.dart

@@ -1,14 +1,15 @@
+import 'dart:developer';
+
 import 'package:anyway/structs/trip.dart';
+import 'package:auto_size_text/auto_size_text.dart';
 
 import 'package:flutter/material.dart';
 
 class Greeter extends StatefulWidget {
-  final Future<Trip> trip;
-  final bool standalone;
+  final Trip trip;
 
   Greeter({
-    required this.standalone,
-    required this.trip
+    required this.trip,
   });
 
   @override
@@ -16,43 +17,91 @@ class Greeter extends StatefulWidget {
 }
 
 
-
 class _GreeterState extends State<Greeter> {
-  Widget greeterBuild (BuildContext context, AsyncSnapshot<Trip> snapshot) {
+  
+  Widget greeterBuilder (BuildContext context, Widget? child) {
     ThemeData theme = Theme.of(context);
-    String cityName = "";
-    if (snapshot.hasData) {
-      cityName = snapshot.data?.cityName ?? '...';
-    } else if (snapshot.hasError) {
-      cityName = "error";
-    } else { // still awaiting the cityname
-      cityName = "...";
-    }
+    TextStyle greeterStyle = TextStyle(color: theme.primaryColor, fontWeight: FontWeight.bold, fontSize: 24);
 
-    Widget topGreeter = Text(
-      'Welcome to $cityName!',
-      style: TextStyle(color: theme.primaryColor, fontWeight: FontWeight.bold, fontSize: 24),
-    );
+    Widget topGreeter;
 
-    if (widget.standalone) {
-      return Center(
-        child: Padding(
-          padding: EdgeInsets.only(top: 24.0),
-          child: topGreeter,
-        ),
+    if (widget.trip.uuid != 'pending') {
+      topGreeter = FutureBuilder(
+        future: widget.trip.cityName,
+        builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
+          if (snapshot.hasData) {
+            return AutoSizeText(
+              maxLines: 1,
+              'Welcome to ${snapshot.data}!',
+              style: greeterStyle
+            );
+          } else if (snapshot.hasError) {
+            log('Error while fetching city name');
+            return AutoSizeText(
+              maxLines: 1,
+              'Welcome to your trip!',
+              style: greeterStyle
+            );
+          } else {
+            return AutoSizeText(
+              maxLines: 1,
+              'Welcome to ...',
+              style: greeterStyle
+            );
+          }
+        }
       );
     } else {
-      return Center(
-        child: Column(
-          children: [
-            Padding(padding: EdgeInsets.only(top: 24.0)),
-            topGreeter,
-            bottomGreeter,
-            Padding(padding: EdgeInsets.only(bottom: 24.0)),
-          ],
-        )
+      // still awaiting the trip
+      // We can hopefully infer the city name from the cityName future
+      // Show a linear loader at the bottom and an info message above
+      topGreeter = Column(
+        mainAxisAlignment: MainAxisAlignment.end,
+        children: [
+          FutureBuilder(
+            future: widget.trip.cityName,
+            builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
+              if (snapshot.hasData) {
+                return AutoSizeText(
+                  maxLines: 1,
+                  'Generating your trip to ${snapshot.data}...',
+                  style: greeterStyle
+                );
+              } else if (snapshot.hasError) {
+                // the exact error is shown in the central part of the trip overview. No need to show it here
+                return AutoSizeText(
+                  maxLines: 1,
+                  'Error while loading trip.',
+                  style: greeterStyle
+                  );
+              }
+              return AutoSizeText(
+                  maxLines: 1,
+                  'Generating your trip...',
+                  style: greeterStyle
+                  );
+            }
+          ),
+          Padding(
+            padding: EdgeInsets.all(5),
+            child: const LinearProgressIndicator()
+          )
+        ]
       );
     }
+
+    return Center(
+      child: Column(
+        children: [
+          // Padding(padding: EdgeInsets.only(top: 20)),
+          topGreeter,
+          Padding(
+            padding: EdgeInsets.all(20),
+            child: bottomGreeter
+          ),
+        ],
+      )
+    );
   }
 
   Widget bottomGreeter = const Text(
@@ -65,9 +114,9 @@ class _GreeterState extends State<Greeter> {
 
   @override
   Widget build(BuildContext context) {
-    return FutureBuilder(
-      future: widget.trip,
-      builder: greeterBuild,
+    return ListenableBuilder(
+      listenable: widget.trip,
+      builder: greeterBuilder,
     );
   }
 }

frontend/lib/modules/landmark_card.dart

@@ -1,4 +1,5 @@
 import 'package:anyway/structs/landmark.dart';
+import 'package:cached_network_image/cached_network_image.dart';
 import 'package:flutter/material.dart';
 
 
@@ -31,9 +32,10 @@ class _LandmarkCardState extends State<LandmarkCard> {
               height: double.infinity,
               // force a fixed width
               width: 160,
-              child: Image.network(
-                widget.landmark.imageURL ?? '',
-                errorBuilder: (context, error, stackTrace) => Icon(Icons.question_mark_outlined),
+              child: CachedNetworkImage(
+                imageUrl: widget.landmark.imageURL ?? '',
+                placeholder: (context, url) => CircularProgressIndicator(),
+                errorWidget: (context, error, stackTrace) => Icon(Icons.question_mark_outlined),
                 // TODO: make this a switch statement to load a placeholder if null
                 // cover the whole container meaning the image will be cropped
                 fit: BoxFit.cover,

frontend/lib/modules/landmarks_overview.dart

@@ -1,17 +1,16 @@
-import 'dart:collection';
+import 'dart:developer';
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 import 'package:anyway/modules/landmark_card.dart';
 import 'package:anyway/structs/landmark.dart';
-
 import 'package:anyway/structs/trip.dart';
-import 'package:flutter/material.dart';
-import 'package:shared_preferences/shared_preferences.dart';
 
 
 
 
 class LandmarksOverview extends StatefulWidget {
-  final Future<Trip>? trip;
+  final Trip? trip;
   const LandmarksOverview({super.key, this.trip});
 
   @override
@@ -19,22 +18,37 @@ class LandmarksOverview extends StatefulWidget {
 }
 
 class _LandmarksOverviewState extends State<LandmarksOverview> {
-  // final Future<List<Landmark>> _landmarks = fetchLandmarks();
 
   @override
   Widget build(BuildContext context) {
-    final Future<LinkedList<Landmark>> _landmarks = getLandmarks(widget.trip);
-    return DefaultTextStyle(
-      style: Theme.of(context).textTheme.displayMedium!,
-      textAlign: TextAlign.center,
-      child: FutureBuilder<LinkedList<Landmark>>(
-        future: _landmarks,
-        builder: (BuildContext context, AsyncSnapshot<LinkedList<Landmark>> snapshot) {
-          List<Widget> children;
-          if (snapshot.hasData) {
-            children = [landmarksWithSteps(snapshot.data!), saveButton()];
-          } else if (snapshot.hasError) {
-            children = <Widget>[
+    return ListenableBuilder(
+      listenable: widget.trip!,
+      builder: (BuildContext context, Widget? child) {
+        Trip trip = widget.trip!;
+        log("Trip ${trip.uuid} ${trip.landmarks.length} landmarks");
+        
+        List<Widget> children;
+        
+        if (trip.uuid != 'pending' && trip.uuid != 'error') {
+          log("Trip ${trip.uuid} ${trip.landmarks.length} landmarks");
+          if (trip.landmarks.length <= 1) {
+            children = [
+              const Text("No landmarks in this trip"),
+            ];
+          } else {
+            children = [
+              landmarksWithSteps(),
+              saveButton(),
+            ];
+          }
+        } else if(trip.uuid == 'pending') {
+          // the trip is still being fetched from the api
+          children = [Center(child: CircularProgressIndicator())];
+        } else {
+            // trip.uuid == 'error'
+            // show the error raised by the api
+            // String error = 
+            children = [
               const Icon(
                 Icons.error_outline,
                 color: Colors.red,
@@ -42,20 +56,15 @@ class _LandmarksOverviewState extends State<LandmarksOverview> {
               ),
               Padding(
                 padding: const EdgeInsets.only(top: 16),
-                child: Text('Error: ${snapshot.error}', style: TextStyle(fontSize: 12)),
+                child: Text('Error: ${trip.errorDescription}'),
               ),
             ];
-          } else {
-            children = [Center(child: CircularProgressIndicator())];
-          }
-          return Center(
-            child: Column(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: children,
-            ),
-          );
-        },
-      ),
+        }
+
+        return Column(
+          children: children,
+        );
+      },
     );
   }
   Widget saveButton() => ElevatedButton(
@@ -67,55 +76,56 @@ class _LandmarksOverviewState extends State<LandmarksOverview> {
     child: const Text('Save'),
   );
 
-}
-
-Widget landmarksWithSteps(LinkedList<Landmark> landmarks) {
-  List<Widget> children = [];
-  int lkey = 0;
-  for (Landmark landmark in landmarks) {
-    children.add(
-      Dismissible(
-        key: ValueKey<int>(lkey),
-        child: LandmarkCard(landmark),
-        // onDismissed: (direction) {
-        //   // Remove the item from the data source.
-        //   setState(() {
-        //     landmarks.remove(landmark);
-        //   });
-        //   // Then show a snackbar.
-        //   ScaffoldMessenger.of(context)
-        //       .showSnackBar(SnackBar(content: Text("${landmark.name} dismissed")));
-        // },
-        background: Container(color: Colors.red),
-        secondaryBackground: Container(
-          color: Colors.red,
-          child: Icon(
-            Icons.delete,
-            color: Colors.white,
-          ),
-          padding: EdgeInsets.all(15),
-          alignment: Alignment.centerRight,
-        ),
-      )
+  Widget landmarksWithSteps() {
+    return ListenableBuilder(
+      listenable: widget.trip!,
+      builder: (BuildContext context, Widget? child) {
+        List<Widget> children = [];
+        for (Landmark landmark in widget.trip!.landmarks) {
+          children.add(
+            Dismissible(
+              key: ValueKey<int>(landmark.hashCode),
+              child: LandmarkCard(landmark),
+              dismissThresholds: {DismissDirection.endToStart: 0.6},
+              onDismissed: (direction) {
+                // Remove the item from the data source.
+                  log(landmark.name);
+                setState(() {
+                  widget.trip!.removeLandmark(landmark);
+                });
+                // Then show a snackbar.
+                ScaffoldMessenger.of(context)
+                    .showSnackBar(SnackBar(content: Text("We won't show ${landmark.name} again")));
+              },
+              background: Container(color: Colors.red),
+              secondaryBackground: Container(
+                color: Colors.red,
+                child: Icon(
+                  Icons.delete,
+                  color: Colors.white,
+                ),
+                padding: EdgeInsets.all(15),
+                alignment: Alignment.centerRight,
+              ),
+            )
+          );
+          if (landmark.next != null) {
+            Widget step = stepBetweenLandmarks(landmark, landmark.next!);
+            children.add(step);
+          }
+        }
+        return Column(
+          children: children  
+        );
+      },
     );
-    lkey++;
-    if (landmark.next != null) {
-      Widget step = stepBetweenLandmarks(landmark, landmark.next!);
-      children.add(step);
-    }
   }
-
-  return Column(
-    children: children
-  );
 }
 
 
-Widget stepBetweenLandmarks(Landmark before, Landmark after) {
-  // This is a simple widget that draws a line between landmark-cards
-  // It's a vertical dotted line
-  // Next to the line is the icon for the mode of transport (walking for now) and the estimated time
-  // There is also a button to open the navigation instructions as a new intent
+Widget stepBetweenLandmarks(Landmark current, Landmark next) {
+  int timeRounded = 5 * (current.tripTime?.inMinutes ?? 0) ~/ 5;
+  // ~/ is integer division (rounding)
   return Container(
     margin: EdgeInsets.all(10),
     padding: EdgeInsets.all(10),
@@ -134,7 +144,7 @@ Widget stepBetweenLandmarks(Landmark before, Landmark after) {
         Column(
           children: [
             Icon(Icons.directions_walk),
-            Text("5 min", style: TextStyle(fontSize: 10)),
+            Text("~$timeRounded min", style: TextStyle(fontSize: 10)),
           ],
         ),
         Spacer(),
@@ -142,15 +152,17 @@ Widget stepBetweenLandmarks(Landmark before, Landmark after) {
           onPressed: () {
             // Open navigation instructions
           },
-          child: Text("Navigate"),
-        ),
+          child: Row(
+            children: [
+              Icon(Icons.directions),
+              Text("Directions"),
+            ],
+          ),
+        )
       ],
     ),
   );
 }
 
-Future<LinkedList<Landmark>> getLandmarks (Future<Trip>? trip) async {
-  Trip tripf = await trip!;
-  return tripf.landmarks;
-}
+
 

frontend/lib/modules/map.dart

@@ -1,13 +1,16 @@
 import 'dart:collection';
+import 'dart:developer';
 
+import 'package:flutter/material.dart';
 import 'package:anyway/structs/landmark.dart';
 import 'package:anyway/structs/trip.dart';
-import 'package:flutter/material.dart';
 import 'package:google_maps_flutter/google_maps_flutter.dart';
+import 'package:widget_to_marker/widget_to_marker.dart';
+
 
 class MapWidget extends StatefulWidget {
 
-  final Future<Trip>? trip;
+  final Trip? trip;
 
   MapWidget({
     this.trip
@@ -19,58 +22,130 @@ class MapWidget extends StatefulWidget {
 
 class _MapWidgetState extends State<MapWidget> {
   late GoogleMapController mapController;
-  // coordinates of Paris
+
   CameraPosition _cameraPosition = CameraPosition(
     target: LatLng(48.8566, 2.3522),
     zoom: 11.0,
   );
-  Set<Marker> markers = <Marker>{};
+  Set<Marker> mapMarkers = <Marker>{};
   
 
   void _onMapCreated(GoogleMapController controller) async {
     mapController = controller;
-    Trip? trip = await widget.trip;
-    List<double>? newLocation = trip?.landmarks.first.location;
+    List<double>? newLocation = widget.trip?.landmarks.firstOrNull?.location;
     if (newLocation != null) {
       CameraUpdate update = CameraUpdate.newLatLng(LatLng(newLocation[0], newLocation[1]));
       controller.moveCamera(update);
     }
-    drawLandmarks();
+    setMapMarkers();
   }
 
-
   void _onCameraIdle() {
     // print(mapController.getLatLng(ScreenCoordinate(x: 0, y: 0)));
   }
 
 
-  void drawLandmarks() async {
-    // (re)draws landmarks on the map
-    Trip? trip = await widget.trip;
-    LinkedList<Landmark>? landmarks = trip?.landmarks;
-    if (landmarks != null){
-      setState(() {
-        for (Landmark landmark in landmarks) {
-          markers.add(Marker(
-            markerId: MarkerId(landmark.name),
-            position: LatLng(landmark.location[0], landmark.location[1]),
-            infoWindow: InfoWindow(title: landmark.name, snippet: landmark.type.name),
-          ));
-        }
-      });
+  void setMapMarkers() async {
+    List<Landmark> landmarks = widget.trip?.landmarks.toList() ?? [];
+    Set<Marker> newMarkers = <Marker>{};
+    for (int i = 0; i < landmarks.length; i++) {
+      Landmark landmark = landmarks[i];
+      List<double> location = landmark.location;
+      Marker marker = Marker(
+        markerId: MarkerId(landmark.uuid),
+        position: LatLng(location[0], location[1]),
+        icon: await CustomMarker(landmark: landmark, position: i).toBitmapDescriptor(
+          logicalSize: const Size(150, 150),
+          imageSize: const Size(150, 150)
+        ),
+      );
+      newMarkers.add(marker);
     }
+    setState(() {
+      mapMarkers = newMarkers;
+    });
   }
 
-
   @override
   Widget build(BuildContext context) {
+    widget.trip?.addListener(setMapMarkers);
     return GoogleMap(
       onMapCreated: _onMapCreated,
       initialCameraPosition: _cameraPosition,
       onCameraIdle: _onCameraIdle,
       // onLongPress: ,
-      markers: markers,
+      markers: mapMarkers,
       cloudMapId: '41c21ac9b81dbfd8',
     );
   }
 }
+
+
+class CustomMarker extends StatelessWidget {
+  final Landmark landmark;
+  final int position;
+
+  CustomMarker({
+    super.key,
+    required this.landmark,
+    required this.position
+    });
+
+  @override
+  Widget build(BuildContext context) {
+    // This returns an outlined circle, with an icon corresponding to the landmark type
+    // As a small dot, the number of the landmark is displayed in the top right
+    Icon icon;
+    if (landmark.type == sightseeing) {
+      icon = Icon(Icons.church, color: Colors.black, size: 50);
+    } else if (landmark.type == nature) {
+      icon = Icon(Icons.park, color: Colors.black, size: 50);
+    } else if (landmark.type == shopping) {
+      icon = Icon(Icons.shopping_cart, color: Colors.black, size: 50);
+    } else if (landmark.type == start || landmark.type == finish) {
+      icon = Icon(Icons.flag, color: Colors.black, size: 50);
+    } else {
+      icon = Icon(Icons.location_on, color: Colors.black, size: 50);
+    }
+
+    Widget? positionIndicator;
+    if (landmark.type != start && landmark.type != finish) {
+      positionIndicator = Positioned(
+        top: 0,
+        right: 0,
+        child: Container(
+          padding: EdgeInsets.all(5),
+          decoration: BoxDecoration(
+            color: Theme.of(context).primaryColor,
+            shape: BoxShape.circle,
+          ),
+          child: Text('$position', style: TextStyle(color: Colors.white, fontSize: 20)),
+        ),
+      );
+    }
+
+    return RepaintBoundary(
+      child: Stack(
+        children: [
+          Container(
+            // these are not the final sizes, since the final size is set in the toBitmapDescriptor method
+            // they are useful nevertheless to ensure the scale of the components are correct
+            width: 75,
+            height: 75,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topLeft,
+                end: Alignment.bottomRight,
+                colors: [Colors.red, Colors.yellow]
+              ),
+              shape: BoxShape.circle,
+              border: Border.all(color: Colors.black, width: 5),
+            ),
+            child: icon,
+          ),
+          positionIndicator ?? Container(),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/modules/trips_overview.dart

@@ -25,12 +25,23 @@ class _TripsOverviewState extends State<TripsOverview> {
       children = List<Widget>.generate(snapshot.data!.length, (index) {
         Trip trip = snapshot.data![index];
         return ListTile(
-          title: Text("Trip to ${trip.cityName}"),
+          title: FutureBuilder(
+            future: trip.cityName,
+            builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
+              if (snapshot.hasData) {
+                return Text("Trip to ${snapshot.data}");
+              } else if (snapshot.hasError) {
+                return Text("Error: ${snapshot.error}");
+              } else {
+                return const Text("Trip to ...");
+              }
+            },
+          ),
           leading: Icon(Icons.pin_drop),
           onTap: () {
             Navigator.of(context).push(
               MaterialPageRoute(
-                builder: (context) => BasePage(mainScreen: "map", trip: Future.value(trip))
+                builder: (context) => BasePage(mainScreen: "map", trip: trip)
               )
             );
           },

frontend/lib/pages/new_trip.dart

@@ -1,5 +1,13 @@
-
+import 'package:anyway/structs/landmark.dart';
 import 'package:flutter/material.dart';
+import 'package:geocoding/geocoding.dart';
+
+import 'package:anyway/layout.dart';
+import 'package:anyway/utils/fetch_trip.dart';
+import 'package:anyway/structs/preferences.dart';
+import "package:anyway/structs/trip.dart";
+
+
 
 class NewTripPage extends StatefulWidget {
   const NewTripPage({Key? key}) : super(key: key);
@@ -9,22 +17,77 @@ class NewTripPage extends StatefulWidget {
 }
 
 class _NewTripPageState extends State<NewTripPage> {
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+  final TextEditingController latController = TextEditingController();
+  final TextEditingController lonController = TextEditingController();
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text('New Trip'),
       ),
-      body: Center(
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'Create a new trip',
-            ),
-          ],
-        ),
-      ),
+      body: Form(
+        key: _formKey,
+        child: Padding(
+          padding: const EdgeInsets.all(15.0),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            
+            children: <Widget>[
+              TextFormField(
+                decoration: const InputDecoration(hintText: 'Lat'),
+                controller: latController,
+                validator: (String? value) {
+                  if (value == null || value.isEmpty || double.tryParse(value) == null){
+                    return 'Please enter a floating point number';
+                  }
+                  return null;
+                },
+              ),
+              TextFormField(
+                decoration: const InputDecoration(hintText: 'Lon'),
+                controller: lonController,
+
+                validator: (String? value) {
+                  if (value == null || value.isEmpty || double.tryParse(value) == null){
+                    return 'Please enter a floating point number';
+                  }
+                  return null;
+                },
+              ),
+              Divider(height: 15, color: Colors.transparent),
+              ElevatedButton(
+                child: const Text('Create trip'),
+                onPressed: () {
+                  if (_formKey.currentState!.validate()) {
+                    List<double> startPoint = [
+                      double.parse(latController.text),
+                      double.parse(lonController.text)
+                    ];
+                    Future<UserPreferences> preferences = loadUserPreferences();
+                    Trip trip = Trip();
+                    trip.landmarks.add(
+                      Landmark(
+                        location: startPoint,
+                        name: "Start",
+                        type: start,
+                        uuid: "pending"
+                      )
+                    );
+                    fetchTrip(trip, preferences);
+                    Navigator.of(context).push(
+                      MaterialPageRoute(
+                        builder: (context) => BasePage(mainScreen: "map", trip: trip)
+                      )
+                    );
+                  }
+                },
+              ),
+            ],
+          ),
+        )
+      )
     );
   }
-}
+}

frontend/lib/pages/overview.dart

@@ -10,10 +10,10 @@ import 'package:anyway/modules/greeter.dart';
 
 
 class NavigationOverview extends StatefulWidget {
-  final Future<Trip> trip;
+  final Trip trip;
 
   NavigationOverview({
-    required this.trip
+    required this.trip,
   });
 
   @override
@@ -27,53 +27,56 @@ class _NavigationOverviewState extends State<NavigationOverview> {
   @override
   Widget build(BuildContext context) {
     return SlidingUpPanel(
-        renderPanelSheet: false,
         panel: _floatingPanel(),
-        collapsed: _floatingCollapsed(),
-        body: MapWidget(trip: widget.trip)
+        // collapsed: _floatingCollapsed(),
+        body: MapWidget(trip: widget.trip),
+        // renderPanelSheet: false,
+        // backdropEnabled: true,
+        maxHeight: MediaQuery.of(context).size.height * 0.8,
+        padding: EdgeInsets.all(10),
+        // panelSnapping: false,
+        borderRadius: BorderRadius.only(topLeft: Radius.circular(25), topRight: Radius.circular(25)),
+        boxShadow: [
+          BoxShadow(
+            blurRadius: 20.0,
+            color: Colors.black,
+          )
+        ],
     );
   }
 
   Widget _floatingCollapsed(){
-    final ThemeData theme = Theme.of(context);
-    return Container(
-      decoration: BoxDecoration(
-        color: theme.canvasColor,
-        borderRadius: BorderRadius.only(topLeft: Radius.circular(24.0), topRight: Radius.circular(24.0)),
-        boxShadow: []
-      ),
-      
-      child: Greeter(standalone: true, trip: widget.trip)
+    return Greeter(
+      trip: widget.trip
     );
   }
 
   Widget _floatingPanel(){
-    final ThemeData theme = Theme.of(context);
-    return Container(
-      decoration: BoxDecoration(
-        color: Colors.white,
-        borderRadius: BorderRadius.all(Radius.circular(24.0)),
-        boxShadow: [
-          BoxShadow(
-            blurRadius: 20.0,
-            color: theme.shadowColor,
-          ),
-        ]
-      ),
-      child: Center(
-        child: Padding(
-        padding: EdgeInsets.all(8.0),
-        child: SingleChildScrollView(
-          child: Column(
-            children: <Widget>[
-              Greeter(standalone: false, trip: widget.trip),
-              LandmarksOverview(trip: widget.trip),
-            ],
-          ),
+    return Column(
+      children: [
+        Padding(
+          padding: const EdgeInsets.all(15),
+          child: 
+            Center(
+              child: Container(
+                width: 40,
+                height: 5,
+                decoration: BoxDecoration(
+                  color: Colors.grey[300],
+                  borderRadius: BorderRadius.all(Radius.circular(12.0)),
+                ),
+              ),
+            ),
         ),
-      ),
-    ),
+        Expanded(
+          child: ListView(
+            children: [
+              Greeter(trip: widget.trip),
+              LandmarksOverview(trip: widget.trip)
+            ]
+          )
+        )
+      ],
     );
   }
-
 }

frontend/lib/pages/profile.dart

@@ -1,7 +1,9 @@
+import 'package:anyway/constants.dart';
 import 'package:anyway/structs/preferences.dart';
 import 'package:flutter/material.dart';
 
 
+bool debugMode = false;
 
 class ProfilePage extends StatefulWidget {
   @override
@@ -9,6 +11,56 @@ class ProfilePage extends StatefulWidget {
 }
 
 class _ProfilePageState extends State<ProfilePage> {
+  Future<UserPreferences> _prefs = loadUserPreferences();
+
+
+  Widget debugButton() {
+    return Padding(
+      padding: EdgeInsets.only(top: 20),
+      child: Row(
+        children: [
+          Text('Debug mode'),
+          Switch(
+            value: debugMode,
+            onChanged: (bool? newValue) {
+              setState(() {
+                debugMode = newValue!;
+                showDialog(
+                  context: context,
+                  builder: (BuildContext context) {
+                    return AlertDialog(
+                      title: Text('Debug mode - custom API'),
+                      content: TextField(
+                        decoration: InputDecoration(
+                          hintText: 'http://localhost:8000'
+                        ),
+                      onChanged: (value) {
+                        setState(() {
+                          API_URL_BASE = value;
+                        });
+                      },
+                    ),
+                    actions: [
+                      TextButton(
+                        child: Text('OK'),
+                        onPressed: () {
+                          Navigator.of(context).pop();
+                        },
+                      ),
+                    ],
+                    );
+                  }
+                );
+              });
+            }
+          )
+        ],
+      )
+    );
+  }
+
+
+
   @override
   Widget build(BuildContext context) {
     return ListView(
@@ -24,66 +76,82 @@ class _ProfilePageState extends State<ProfilePage> {
           child: Text('Curious traveler', style: TextStyle(fontSize: 24))
         ),
 
-        Padding(padding: EdgeInsets.all(10)),
-        Divider(indent: 25, endIndent: 25),
-        Padding(padding: EdgeInsets.all(10)),
+        Divider(indent: 25, endIndent: 25, height: 50),
 
-        Padding(
-          padding: EdgeInsets.only(left: 10, right: 10, top: 0, bottom: 10),
-          child: Text('Please rate your personal preferences so that we can taylor your experience.', style: TextStyle(fontSize: 18))
+        Center(
+          child: Padding(
+           padding: EdgeInsets.only(left: 10, right: 10, top: 0, bottom: 10),
+            child: Text('For a tailored experience, please rate your discovery preferences.', style: TextStyle(fontSize: 18))
+          ),
         ),
 
-        // Now the sliders
-        ImportanceSliders()
+        FutureBuilder(future: _prefs, builder: futureSliders),
+        debugButton()
       ]
     );
   }
+
+  Widget futureSliders(BuildContext context, AsyncSnapshot<UserPreferences> snapshot) {
+    if (snapshot.connectionState == ConnectionState.done) {
+      UserPreferences prefs = snapshot.data!;
+
+      return Column(
+        children: [
+          PreferenceSliders(prefs: [prefs.maxTime, prefs.maxDetour]),
+          Divider(indent: 25, endIndent: 25, height: 50),
+          PreferenceSliders(prefs: [prefs.sightseeing, prefs.shopping, prefs.nature])
+        ]
+      );
+    } else {
+      return CircularProgressIndicator();
+    }
+  }
 }
 
 
+class PreferenceSliders extends StatefulWidget {
+  final List<SinglePreference> prefs;
 
-class ImportanceSliders extends StatefulWidget {
+  PreferenceSliders({required this.prefs});
 
   @override
-  State<ImportanceSliders> createState() => _ImportanceSlidersState();
+  State<PreferenceSliders> createState() => _PreferenceSlidersState();
 }
 
 
-class _ImportanceSlidersState extends State<ImportanceSliders> {
-
-  UserPreferences _prefs = UserPreferences();
-
-  List<Card> _createSliders() {
-    List<Card> sliders = [];
-    for (SinglePreference pref in _prefs.preferences) {
-      sliders.add(Card(
-        child: ListTile(
-          leading: pref.icon,
-          title: Text(pref.name),
-          subtitle: Slider(
-            value: pref.value.toDouble(),
-            min: 0,
-            max: 10,
-            divisions: 10,
-            label: pref.value.toString(),
-            onChanged: (double newValue) {
-              setState(() {
-                pref.value = newValue.toInt();
-                _prefs.save();
-              });
-            },
-          )
-        ),
-        margin: const EdgeInsets.only(left: 10, right: 10, top: 10, bottom: 0),
-        shadowColor: Colors.grey,
-      ));
-    }
-    return sliders;
-  }
+class _PreferenceSlidersState extends State<PreferenceSliders> {
 
   @override
   Widget build(BuildContext context) {
+    List<Card> sliders = [];
+      for (SinglePreference pref in widget.prefs) {
+      sliders.add(
+        Card(
+          child: ListTile(
+            leading: pref.icon,
+            title: Text(pref.name),
+            subtitle: Slider(
+              value: pref.value.toDouble(),
+              min: pref.minVal.toDouble(),
+              max: pref.maxVal.toDouble(),
+              divisions: pref.maxVal - pref.minVal,
+              label: pref.value.toString(),
+              onChanged: (double newValue) {
+                setState(() {
+                  pref.value = newValue.toInt();
+                  pref.save();
+                });
+              },
+            )
+          ),
+          margin: const EdgeInsets.only(left: 10, right: 10, top: 10, bottom: 0),
+          shadowColor: Colors.grey,
+        )
+      );
+    }
 
-    return Column(children: _createSliders());
+    return Column(
+      children: sliders);
   }
 }
+

frontend/lib/structs/landmark.dart

@@ -3,6 +3,15 @@ import 'dart:convert';
 
 import 'package:shared_preferences/shared_preferences.dart';
 
+const LandmarkType sightseeing = LandmarkType(name: 'sightseeing');
+const LandmarkType nature = LandmarkType(name: 'nature');
+const LandmarkType shopping = LandmarkType(name: 'shopping');
+// const LandmarkType museum = LandmarkType(name: 'Museum');
+// const LandmarkType restaurant = LandmarkType(name: 'Restaurant');
+const LandmarkType start = LandmarkType(name: 'start');
+const LandmarkType finish = LandmarkType(name: 'finish');
+
+
 final class Landmark extends LinkedListEntry<Landmark>{
   // A linked node of a list of Landmarks
   final String uuid;
@@ -47,7 +56,7 @@ final class Landmark extends LinkedListEntry<Landmark>{
         'location': List<dynamic> location,
         'type': String type,
       }) {
-      // refine the parsing on a few
+      // refine the parsing on a few fields
       List<double> locationFixed = List<double>.from(location);
       // parse the rest separately, they could be missing
       LandmarkType typeFixed = LandmarkType(name: type);
@@ -55,11 +64,12 @@ final class Landmark extends LinkedListEntry<Landmark>{
       final imageURL = json['image_url'] as String?;
       final description = json['description'] as String?;
       var duration = Duration(minutes: json['duration'] ?? 0) as Duration?;
-      if (duration == const Duration()) {duration = null;};
+      // if (duration == const Duration()) {duration = null;};
       final visited = json['visited'] as bool?;
+      var tripTime = Duration(minutes: json['time_to_reach_next'] ?? 0) as Duration?;
       
       return Landmark(
-        uuid: uuid, name: name, location: locationFixed, type: typeFixed, isSecondary: isSecondary, imageURL: imageURL, description: description, duration: duration, visited: visited);
+        uuid: uuid, name: name, location: locationFixed, type: typeFixed, isSecondary: isSecondary, imageURL: imageURL, description: description, duration: duration, visited: visited, tripTime: tripTime);
     } else {
       throw FormatException('Invalid JSON: $json');
     }
@@ -81,7 +91,8 @@ final class Landmark extends LinkedListEntry<Landmark>{
     'image_url': imageURL,
     'description': description,
     'duration': duration?.inMinutes,
-    'visited': visited
+    'visited': visited,
+    'trip_time': tripTime?.inMinutes,
   };
 }
 
@@ -96,6 +107,14 @@ class LandmarkType {
     // required this.description,
     // required this.icon,
   });
+  @override
+  bool operator ==(Object other) {
+    if (other is LandmarkType) {
+      return name == other.name;
+    } else {
+      return false;
+    }
+  }
 }
 
 

frontend/lib/structs/linked_landmarks.dart

@@ -1,46 +0,0 @@
-// import "package:anyway/structs/landmark.dart";
-
-// class Linked<Landmark> {
-//   Landmark? head;
-  
-//   Linked();
-
-//   // class methods
-//   bool get isEmpty => head == null;
-
-//   // Add a new node to the end of the list
-//   void add(Landmark value) {
-//     if (isEmpty) {
-//       // If the list is empty, set the new node as the head
-//       head = value;
-//     } else {
-//       Landmark? current = head;
-//       while (current!.next != null) {
-//         // Traverse the list to find the last node
-//         current = current.next;
-//       }
-//       current.next = value; // Set the new node as the next node of the last node
-//     }
-//   }
-
-//   // Remove the first node with the given value
-//   void remove(Landmark value) {
-//     if (isEmpty) return;
-
-//     // If the value is in the head node, update the head to the next node
-//     if (head! == value) {
-//       head = head.next;
-//       return;
-//     }
-
-//     var current = head;
-//     while (current!.next != null) {
-//       if (current.next! == value) {
-//         // If the value is found in the next node, skip the next node
-//         current.next = current.next.next;
-//         return;
-//       }
-//       current = current.next;
-//     }
-//   }
-// }

frontend/lib/structs/preferences.dart

@@ -3,80 +3,100 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 
 class SinglePreference {
+  String slug;
   String name;
   String description;
   int value;
+  int minVal;
+  int maxVal;
   Icon icon;
-  String key;
 
   SinglePreference({
+    required this.slug,
     required this.name,
     required this.description,
     required this.value,
     required this.icon,
-    required this.key,
+    this.minVal = 0,
+    this.maxVal = 5,
   });
-}
-
-
-class UserPreferences {
-  List<SinglePreference> preferences = [
-    SinglePreference(
-      name: "Sightseeing",
-      description: "How much do you like sightseeing?",
-      value: 0,
-      icon: Icon(Icons.church),
-      key: "sightseeing",
-    ),
-    SinglePreference(
-      name: "Shopping",
-      description: "How much do you like shopping?",
-      value: 0,
-      icon: Icon(Icons.shopping_bag),
-      key: "shopping",
-    ),
-    SinglePreference(
-      name: "Foods & Drinks",
-      description: "How much do you like eating?",
-      value: 0,
-      icon: Icon(Icons.restaurant),
-      key: "eating",
-    ),
-    SinglePreference(
-      name: "Nightlife",
-      description: "How much do you like nightlife?",
-      value: 0,
-      icon: Icon(Icons.wine_bar),
-      key: "nightlife",
-    ),
-    SinglePreference(
-      name: "Nature",
-      description: "How much do you like nature?",
-      value: 0,
-      icon: Icon(Icons.landscape),
-      key: "nature",
-    ),
-    SinglePreference(
-      name: "Culture",
-      description: "How much do you like culture?",
-      value: 0,
-      icon: Icon(Icons.palette),
-      key: "culture",
-    ),
-  ];
-
 
   void save() async {
     SharedPreferences sharedPrefs = await SharedPreferences.getInstance();
-    for (SinglePreference pref in preferences) {
-      sharedPrefs.setInt(pref.key, pref.value);
-    }
+      sharedPrefs.setInt('pref_$slug', value);
   }
 
   void load() async {
     SharedPreferences sharedPrefs = await SharedPreferences.getInstance();
-    for (SinglePreference pref in preferences) {
-      pref.value = sharedPrefs.getInt(pref.key) ?? 0;
+      value = sharedPrefs.getInt('pref_$slug') ?? minVal;
+  }
+}
+
+
+class UserPreferences {
+  SinglePreference sightseeing = SinglePreference(
+    name: "Sightseeing",
+    slug: "sightseeing",
+    description: "How much do you like sightseeing?",
+    value: 0,
+    icon: Icon(Icons.church),
+  );
+  SinglePreference shopping = SinglePreference(
+    name: "Shopping",
+    slug: "shopping",
+    description: "How much do you like shopping?",
+    value: 0,
+    icon: Icon(Icons.shopping_bag),
+  );
+  SinglePreference nature = SinglePreference(
+    name: "Nature",
+    slug: "nature",
+    description: "How much do you like nature?",
+    value: 0,
+    icon: Icon(Icons.landscape),
+  );
+
+  SinglePreference maxTime = SinglePreference(
+    name: "Trip duration",
+    slug: "duration",
+    description: "How long do you want your trip to be?",
+    value: 30,
+    minVal: 30,
+    maxVal: 720,
+    icon: Icon(Icons.timer),
+  );
+  SinglePreference maxDetour = SinglePreference(
+    name: "Trip detours",
+    slug: "detours",
+    description: "Are you okay with roaming even if makes the trip longer?",
+    value: 0,
+    maxVal: 30,
+    icon: Icon(Icons.loupe_sharp),
+  );
+
+
+
+  Future<void> load() async {
+    for (SinglePreference pref in [sightseeing, shopping, nature, maxTime, maxDetour]) {
+      pref.load();
     }
   }
+
+  Map<String, dynamic> toJson() {
+      // This is "opinionated" JSON, corresponding to the backend's expectations
+      return {
+        "sightseeing": {"type": "sightseeing", "score": sightseeing.value},
+        "shopping": {"type": "shopping", "score": shopping.value},
+        "nature": {"type": "nature", "score": nature.value},
+        "max_time_minute": maxTime.value,
+        "detour_tolerance_minute": maxDetour.value
+      };
+    }
+}
+
+
+Future<UserPreferences> loadUserPreferences() async {
+  UserPreferences prefs = UserPreferences();
+  await prefs.load();
+  return prefs;
 }

frontend/lib/structs/route.dart

@@ -1,14 +0,0 @@
-import "package:anyway/structs/landmark.dart";
-
-
-class Route {
-  final String name;
-  final Duration duration;
-  final List<Landmark> landmarks;
-
-  Route({
-    required this.name,
-    required this.duration,
-    required this.landmarks
-  });
-}

frontend/lib/structs/trip.dart

@@ -5,31 +5,71 @@ import 'dart:collection';
 import 'dart:convert';
 
 import 'package:anyway/structs/landmark.dart';
+import 'package:flutter/foundation.dart';
+import 'package:geocoding/geocoding.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
-class Trip {
-  final String uuid;
-  final String cityName;
-  // TODO: cityName should be inferred from coordinates of the Landmarks
-  final LinkedList<Landmark> landmarks;
+class Trip with ChangeNotifier {
+  String uuid;
+  int totalTime;
+  LinkedList<Landmark> landmarks;
   // could be empty as well
+  String? errorDescription;
+
+  Future<String> get cityName async {
+    List<double>? location = landmarks.firstOrNull?.location; 
+    if (GeocodingPlatform.instance == null) {
+      return '$location';
+    } else if (location == null) {
+      return 'Unknown';
+    } else{
+      List<Placemark> placemarks = await placemarkFromCoordinates(location[0], location[1]);
+      return placemarks.first.locality ?? 'Unknown';
+    }
+  }
 
 
   Trip({
-    required this.uuid,
-    required this.cityName,
-    required this.landmarks,
-  });
-
+    this.uuid = 'pending',
+    this.totalTime = 0,
+    LinkedList<Landmark>? landmarks
+    // a trip can be created with no landmarks, but the list should be initialized anyway
+  }) : landmarks = landmarks ?? LinkedList<Landmark>();
+  
 
   factory Trip.fromJson(Map<String, dynamic> json) {
-    return Trip(
+    Trip trip = Trip(
       uuid: json['uuid'],
-      cityName: json['city_name'],
-      landmarks: LinkedList()
+      totalTime: json['total_time'],
     );
+
+    return trip;
   }
 
+  void loadFromJson(Map<String, dynamic> json) {
+    uuid = json['uuid'];
+    totalTime = json['total_time'];
+    notifyListeners();
+  }
+  void addLandmark(Landmark landmark) {
+    landmarks.add(landmark);
+    notifyListeners();
+  }
+
+  void updateUUID(String newUUID) {
+    uuid = newUUID;
+    notifyListeners();
+  }
+
+  void removeLandmark(Landmark landmark) {
+    landmarks.remove(landmark);
+    notifyListeners();
+  }
+  
+  void updateError(String error) {
+    errorDescription = error;
+    notifyListeners();
+  }
 
   factory Trip.fromPrefs(SharedPreferences prefs, String uuid) {
     String? content = prefs.getString('trip_$uuid');
@@ -43,8 +83,8 @@ class Trip {
 
   Map<String, dynamic> toJson() => {
     'uuid': uuid,
-    'city_name': cityName,
-    'entry_uuid': landmarks.first?.uuid ?? ''
+    'total_time': totalTime,
+    'first_landmark_uuid': landmarks.first.uuid
   };
 
 

frontend/lib/utils/fetch_landmarks.dart

@@ -1,54 +0,0 @@
-import "package:anyway/structs/landmark.dart";
-import "package:anyway/structs/linked_landmarks.dart";
-import 'package:dio/dio.dart';
-
-final dio = Dio();
-
-// Future<List<Landmark>> fetchLandmarks() async {
-//   // final response = await http
-//   //     .get(Uri.parse('https://nav.kluster.moll.re/v1/destination/1'));
-
-//   // if (response.statusCode == 200) {
-//     // If the server did return a 200 OK response,
-//     // then parse the JSON.
-//     List<Landmark> landmarks = [
-//       // 48°51′29.6″N 2°17′40.2″E
-//       Landmark(
-//         name: "Eiffel Tower",
-//         location: [48.51296, 2.17402],
-//         type: LandmarkType(name: "Tower"),
-//         imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Tour_Eiffel_Wikimedia_Commons.jpg/1037px-Tour_Eiffel_Wikimedia_Commons.jpg"
-//         ),
-//       Landmark(
-//         name: "Notre Dame Cathedral",
-//         location: [48.8530, 2.3498],
-//         type: LandmarkType(name: "Monument"),
-//         imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Notre-Dame_de_Paris%2C_4_October_2017.jpg/440px-Notre-Dame_de_Paris%2C_4_October_2017.jpg"
-//         ),
-//       Landmark(
-//         name: "Louvre palace",
-//         location: [48.8606, 2.3376],
-//         type: LandmarkType(name: "Museum"),
-//         imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Louvre_Museum_Wikimedia_Commons.jpg/540px-Louvre_Museum_Wikimedia_Commons.jpg"
-//         ),
-//       Landmark(
-//         name: "Pont-des-arts",
-//         location: [48.5130, 2.2015],
-//         type: LandmarkType(name: "Bridge"),
-//         imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Pont_des_Arts%2C_6e_Arrondissement%2C_Paris_%28HDR%29_20140320_1.jpg/560px-Pont_des_Arts%2C_6e_Arrondissement%2C_Paris_%28HDR%29_20140320_1.jpg"),
-//       Landmark(
-//         name: "Panthéon",
-//         location: [48.5046, 2.2046],
-//         type: LandmarkType(name: "Monument"),
-//         imageURL: "https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Pantheon_of_Paris_007.JPG/1280px-Pantheon_of_Paris_007.JPG"
-//         ),
-//     ];
-//     // sleep 10 seconds
-//     await Future.delayed(Duration(seconds: 5));
-//     return landmarks;
-//   // } else {
-//   //   // If the server did not return a 200 OK response,
-//   //   // then throw an exception.
-//   //   throw Exception('Failed to load destination');
-//   // }
-// }

frontend/lib/utils/fetch_trip.dart

@@ -0,0 +1,93 @@
+import "dart:convert";
+import "dart:developer";
+import 'package:dio/dio.dart';
+
+import 'package:anyway/constants.dart';
+import "package:anyway/structs/landmark.dart";
+import "package:anyway/structs/trip.dart";
+import "package:anyway/structs/preferences.dart";
+
+
+Dio dio = Dio(
+    BaseOptions(
+      baseUrl: API_URL_BASE,
+      connectTimeout: const Duration(seconds: 5),
+      receiveTimeout: const Duration(seconds: 120),
+      // also accept 500 errors, since we cannot rule out that the server is at fault. We still want to gracefully handle these errors
+      validateStatus: (status) => status! <= 500,
+      receiveDataWhenStatusError: true,
+      // api is notoriously slow
+      // headers: {
+      //   HttpHeaders.userAgentHeader: 'dio',
+      //   'api': '1.0.0',
+      // },
+      contentType: Headers.jsonContentType,
+      responseType: ResponseType.json,
+        
+  ),
+);
+
+fetchTrip(
+  Trip trip,
+  Future<UserPreferences> preferences,
+) async {
+  UserPreferences prefs = await preferences;
+  Map<String, dynamic> data = {
+    "preferences": prefs.toJson(),
+    "start": trip.landmarks!.first.location,
+  };
+  String dataString = jsonEncode(data);
+  log(dataString);
+
+  final response = await dio.post(
+    "/trip/new",
+    data: data
+  );
+
+  // handle errors
+  if (response.statusCode != 200) {
+    trip.updateUUID("error");
+    if (response.data["detail"] != null) {
+      trip.updateError(response.data["detail"]);
+      log(response.data["detail"]);
+      // throw Exception(response.data["detail"]);
+    }
+  } else {
+    Map<String, dynamic> json = response.data;
+
+    // only fill in the trip "meta" data for now
+    trip.loadFromJson(json);
+
+    // now fill the trip with landmarks
+    // we are going to recreate ALL the landmarks from the information given by the api
+    trip.landmarks.remove(trip.landmarks.first);
+    String? nextUUID = json["first_landmark_uuid"];
+    while (nextUUID != null) {
+      var (landmark, newUUID) = await fetchLandmark(nextUUID);
+      trip.addLandmark(landmark);
+      nextUUID = newUUID;
+    }
+
+  log(response.data.toString());
+  }
+}
+
+
+
+Future<(Landmark, String?)> fetchLandmark(String uuid) async {
+  final response = await dio.get(
+    "/landmark/$uuid"
+  );
+
+  // handle errors
+  if (response.statusCode != 200) {
+    throw Exception('Failed to load landmark');
+  }
+  if (response.data["detail"] != null) {
+    throw Exception(response.data["detail"]);
+  }
+  log(response.data.toString());
+  Map<String, dynamic> json = response.data;
+  String? nextUUID = json["next_uuid"];
+  return (Landmark.fromJson(json), nextUUID);
+}

frontend/lib/utils/load_trips.dart

@@ -17,7 +17,7 @@ Future<List<Trip>> loadTrips() async {
   }
 
   if (trips.isEmpty) {
-    Trip t1 = Trip(uuid: '1', cityName: 'Paris', landmarks: LinkedList<Landmark>());
+    Trip t1 = Trip(uuid: '1', landmarks: LinkedList<Landmark>());
     t1.landmarks.add(
       Landmark(
         uuid: '1',
@@ -66,7 +66,7 @@ Future<List<Trip>> loadTrips() async {
     trips.add(t1);
 
 
-    Trip t2 = Trip(uuid: '2', cityName: 'Vienna', landmarks: LinkedList<Landmark>());
+    Trip t2 = Trip(uuid: '2', landmarks: LinkedList<Landmark>());
 
     t2.landmarks.add(
       Landmark(

frontend/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,8 +5,12 @@
 import FlutterMacOS
 import Foundation
 
+import path_provider_foundation
 import shared_preferences_foundation
+import sqflite
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
+  SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
 }

frontend/pubspec.lock

@@ -9,6 +9,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.11.0"
+  auto_size_text:
+    dependency: "direct main"
+    description:
+      name: auto_size_text
+      sha256: "3f5261cd3fb5f2a9ab4e2fc3fba84fd9fcaac8821f20a1d4e71f557521b22599"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -17,6 +25,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
+  cached_network_image:
+    dependency: "direct main"
+    description:
+      name: cached_network_image
+      sha256: "4a5d8d2c728b0f3d0245f69f921d7be90cae4c2fd5288f773088672c0893f819"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.0"
+  cached_network_image_platform_interface:
+    dependency: transitive
+    description:
+      name: cached_network_image_platform_interface
+      sha256: ff0c949e323d2a1b52be73acce5b4a7b04063e61414c8ca542dbba47281630a7
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
+  cached_network_image_web:
+    dependency: transitive
+    description:
+      name: cached_network_image_web
+      sha256: "6322dde7a5ad92202e64df659241104a43db20ed594c41ca18de1014598d7996"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   characters:
     dependency: transitive
     description:
@@ -41,6 +73,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.18.0"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
   csslib:
     dependency: transitive
     description:
@@ -97,11 +137,27 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.0"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: "25517a4deb0c03aa0f32fd12db525856438902d9c16536311e76cdc57b31d7d1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   flutter:
     dependency: "direct main"
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_cache_manager:
+    dependency: transitive
+    description:
+      name: flutter_cache_manager
+      sha256: a77f77806a790eb9ba0118a5a3a936e81c4fea2b61533033b2b0c3d50bbde5ea
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.0"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -114,10 +170,10 @@ packages:
     dependency: transitive
     description:
       name: flutter_plugin_android_lifecycle
-      sha256: "8cf40eebf5dec866a6d1956ad7b4f7016e6c0cc69847ab946833b7d43743809f"
+      sha256: "9d98bd47ef9d34e803d438f17fd32b116d31009f534a6fa5ce3a1167f189a6de"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.19"
+    version: "2.0.21"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -128,54 +184,86 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  geocoding:
+    dependency: "direct main"
+    description:
+      name: geocoding
+      sha256: d580c801cba9386b4fac5047c4c785a4e19554f46be42f4f5e5b7deacd088a66
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  geocoding_android:
+    dependency: transitive
+    description:
+      name: geocoding_android
+      sha256: "1b13eca79b11c497c434678fed109c2be020b158cec7512c848c102bc7232603"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.3.1"
+  geocoding_ios:
+    dependency: transitive
+    description:
+      name: geocoding_ios
+      sha256: "94ddba60387501bd1c11e18dca7c5a9e8c645d6e3da9c38b9762434941870c24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
+  geocoding_platform_interface:
+    dependency: transitive
+    description:
+      name: geocoding_platform_interface
+      sha256: "8c2c8226e5c276594c2e18bfe88b19110ed770aeb7c1ab50ede570be8b92229b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
   google_maps:
     dependency: transitive
     description:
       name: google_maps
-      sha256: "47eef3836b49bb030d5cb3afc60b8451408bf34cf753e571b645d6529eb4251a"
+      sha256: "463b38e5a92a05cde41220a11fd5eef3847031fef3e8cf295ac76ec453246907"
       url: "https://pub.dev"
     source: hosted
-    version: "7.1.0"
+    version: "8.0.0"
   google_maps_flutter:
     dependency: "direct main"
     description:
       name: google_maps_flutter
-      sha256: c1972cbad779bc5346c49045f26ae45550a0958b1cbca5b524dd3c8954995d28
+      sha256: acf0ec482d86b2ac55ade80597ce7f797a47971f5210ebfd030f0d58130e0a94
       url: "https://pub.dev"
     source: hosted
-    version: "2.6.1"
+    version: "2.7.0"
   google_maps_flutter_android:
     dependency: transitive
     description:
       name: google_maps_flutter_android
-      sha256: "0bcadb80eba39afda77dede89a6caafd3b68f2786b90491eceea4a01c3db181c"
+      sha256: "5d444f4135559488d7ea325eae710ae3284e6951b1b61729a0ac026456fe1548"
       url: "https://pub.dev"
     source: hosted
-    version: "2.8.0"
+    version: "2.12.1"
   google_maps_flutter_ios:
     dependency: transitive
     description:
       name: google_maps_flutter_ios
-      sha256: e5132d17f051600d90d79d9f574b177c24231da702453a036db2490f9ced4646
+      sha256: a6e3c6ecdda6c985053f944be13a0645ebb919da2ef0f5bc579c5e1670a5b2a8
       url: "https://pub.dev"
     source: hosted
-    version: "2.6.0"
+    version: "2.10.0"
   google_maps_flutter_platform_interface:
     dependency: transitive
     description:
       name: google_maps_flutter_platform_interface
-      sha256: "167af879da4d004cd58771f1469b91dcc3b9b0a2c5334cc6bf71fd41d4b35403"
+      sha256: bd60ca330e3c7763b95b477054adec338a522d982af73ecc520b232474063ac5
       url: "https://pub.dev"
     source: hosted
-    version: "2.6.0"
+    version: "2.8.0"
   google_maps_flutter_web:
     dependency: transitive
     description:
       name: google_maps_flutter_web
-      sha256: "0c0d5c723d94b295cf86dd1c45ff91d2ac1fff7c05ddca4f01bef9fa0a014690"
+      sha256: "8d5d0f58bfc4afac0bbe3d399f2018fcea691e3ea3d35254b7aae56df5827659"
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.7"
+    version: "0.5.9+1"
   html:
     dependency: transitive
     description:
@@ -188,10 +276,10 @@ packages:
     dependency: "direct main"
     description:
       name: http
-      sha256: "761a297c042deedc1ffbb156d6e2af13886bb305c2a343a4d972504cd67dd938"
+      sha256: b9c29a161230ee03d3ccf545097fccd9b87a5264228c5d348202e0f0c28f9010
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.1"
+    version: "1.2.2"
   http_parser:
     dependency: transitive
     description:
@@ -200,22 +288,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.0.2"
-  js:
-    dependency: transitive
-    description:
-      name: js
-      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.6.7"
-  js_wrapping:
-    dependency: transitive
-    description:
-      name: js_wrapping
-      sha256: e385980f7c76a8c1c9a560dfb623b890975841542471eade630b2871d243851c
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.7.4"
   leak_tracker:
     dependency: transitive
     description:
@@ -272,6 +344,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.12.0"
+  nested:
+    dependency: transitive
+    description:
+      name: nested
+      sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  octo_image:
+    dependency: transitive
+    description:
+      name: octo_image
+      sha256: "34faa6639a78c7e3cbe79be6f9f96535867e879748ade7d17c9b1ae7536293bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
   path:
     dependency: transitive
     description:
@@ -280,6 +368,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.0"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: fec0d61223fba3154d87759e3cc27fe2c8dc498f6386c6d6fc80d1afdd1bf378
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "490539678396d4c3c0b06efdaab75ae60675c3e0c66f72bc04c2e2c1e0e2abeb"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.9"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: f234384a3fdd67f989b4d54a5d73ca2a6c422fa55ae694381ae0f4375cd1ea16
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.0"
   path_provider_linux:
     dependency: transitive
     description:
@@ -300,18 +412,18 @@ packages:
     dependency: transitive
     description:
       name: path_provider_windows
-      sha256: "8bc9f22eee8690981c22aa7fc602f5c85b497a6fb2ceb35ee5a5e5ed85ad8170"
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.1"
+    version: "2.3.0"
   platform:
     dependency: transitive
     description:
       name: platform
-      sha256: "12220bb4b65720483f8fa9450b4332347737cf8213dd2840d8b2c823e47243ec"
+      sha256: "9b71283fc13df574056616011fb138fd3b793ea47cc509c189a6c3fa5f8a1a65"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.4"
+    version: "3.1.5"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -320,6 +432,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.8"
+  provider:
+    dependency: "direct main"
+    description:
+      name: provider
+      sha256: c8a055ee5ce3fd98d6fc872478b03823ffdb448699c6ebdbbc71d59b596fd48c
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.2"
+  rxdart:
+    dependency: transitive
+    description:
+      name: rxdart
+      sha256: "5c3004a4a8dbb94bd4bf5412a4def4acdaa12e12f269737a5751369e12d1a962"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.28.0"
   sanitize_html:
     dependency: transitive
     description:
@@ -332,58 +460,58 @@ packages:
     dependency: "direct main"
     description:
       name: shared_preferences
-      sha256: d3bbe5553a986e83980916ded2f0b435ef2e1893dfaa29d5a7a790d0eca12180
+      sha256: c3f888ba2d659f3e75f4686112cc1e71f46177f74452d40d8307edc332296ead
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.3"
+    version: "2.3.0"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
-      sha256: "1ee8bf911094a1b592de7ab29add6f826a7331fb854273d55918693d5364a1f2"
+      sha256: "041be4d9d2dc6079cf342bc8b761b03787e3b71192d658220a56cac9c04a0294"
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.2"
+    version: "2.3.0"
   shared_preferences_foundation:
     dependency: transitive
     description:
       name: shared_preferences_foundation
-      sha256: "0a8a893bf4fd1152f93fec03a415d11c27c74454d96e2318a7ac38dd18683ab7"
+      sha256: "671e7a931f55a08aa45be2a13fe7247f2a41237897df434b30d2012388191833"
       url: "https://pub.dev"
     source: hosted
-    version: "2.4.0"
+    version: "2.5.0"
   shared_preferences_linux:
     dependency: transitive
     description:
       name: shared_preferences_linux
-      sha256: "9f2cbcf46d4270ea8be39fa156d86379077c8a5228d9dfdb1164ae0bb93f1faa"
+      sha256: "2ba0510d3017f91655b7543e9ee46d48619de2a2af38e5c790423f7007c7ccc1"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.2"
+    version: "2.4.0"
   shared_preferences_platform_interface:
     dependency: transitive
     description:
       name: shared_preferences_platform_interface
-      sha256: "22e2ecac9419b4246d7c22bfbbda589e3acf5c0351137d87dd2939d984d37c3b"
+      sha256: "57cbf196c486bc2cf1f02b85784932c6094376284b3ad5779d1b1c6c6a816b80"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.2"
+    version: "2.4.1"
   shared_preferences_web:
     dependency: transitive
     description:
       name: shared_preferences_web
-      sha256: "9aee1089b36bd2aafe06582b7d7817fd317ef05fc30e6ba14bff247d0933042a"
+      sha256: "3a293170d4d9403c3254ee05b84e62e8a9b3c5808ebd17de6a33fe9ea6457936"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   shared_preferences_windows:
     dependency: transitive
     description:
       name: shared_preferences_windows
-      sha256: "841ad54f3c8381c480d0c9b508b89a34036f512482c407e6df7a9c4aa2ef8f59"
+      sha256: "398084b47b7f92110683cac45c6dc4aae853db47e470e5ddcd52cab7f7196ab2"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.2"
+    version: "2.4.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -405,6 +533,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.10.0"
+  sprintf:
+    dependency: transitive
+    description:
+      name: sprintf
+      sha256: "1fc9ffe69d4df602376b52949af107d8f5703b77cda567c4d7d86a0693120f23"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.0"
+  sqflite:
+    dependency: transitive
+    description:
+      name: sqflite
+      sha256: a43e5a27235518c03ca238e7b4732cf35eabe863a369ceba6cbefa537a66f16d
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.3+1"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      sha256: "3da423ce7baf868be70e2c0976c28a1bb2f73644268b7ffa7d2e08eab71f16a4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.4"
   stack_trace:
     dependency: transitive
     description:
@@ -437,6 +589,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.2.0"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      sha256: "539ef412b170d65ecdafd780f924e5be3f60032a1128df156adad6c5b373d558"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0+1"
   term_glyph:
     dependency: transitive
     description:
@@ -461,6 +621,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.2"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "83d37c7ad7aaf9aa8e275490669535c8080377cfa7a7004c24dfac53afffaa90"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.4.2"
   vector_math:
     dependency: transitive
     description:
@@ -485,14 +653,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.5.1"
-  win32:
-    dependency: transitive
+  widget_to_marker:
+    dependency: "direct main"
     description:
-      name: win32
-      sha256: a79dbe579cb51ecd6d30b17e0cae4e0ea15e2c0e66f69ad4198f22a6789e94f4
+      name: widget_to_marker
+      sha256: badc36f23c76f3ca9d43d7780058096be774adf0f661bdb6eb6f6b893f648ab9
       url: "https://pub.dev"
     source: hosted
-    version: "5.5.1"
+    version: "1.0.6"
   xdg_directories:
     dependency: transitive
     description:
@@ -503,4 +671,4 @@ packages:
     version: "1.0.4"
 sdks:
   dart: ">=3.4.0 <4.0.0"
-  flutter: ">=3.19.0"
+  flutter: ">=3.22.0"

frontend/pubspec.yaml

@@ -36,10 +36,15 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.6
   sliding_up_panel: ^2.0.0+1
-  google_maps_flutter: ^2.6.1
   http: ^1.2.1
   shared_preferences: ^2.2.3
   dio: ^5.5.0+1
+  google_maps_flutter: ^2.7.0
+  cached_network_image: ^3.4.0
+  geocoding: ^3.0.0
+  widget_to_marker: ^1.0.6
+  provider: ^6.1.2
+  auto_size_text: ^3.0.0
 
 dev_dependencies:
   flutter_test: