use fastlane to deploy android app

frontend/android/.gitignore

@@ -12,3 +12,6 @@ GeneratedPluginRegistrant.java
 key.properties
 **/*.keystore
 **/*.jks
+
+# Fastlane google cloud access
+google-key.json

frontend/android/Gemfile

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem "fastlane"

frontend/android/Gemfile.lock

@@ -0,0 +1,220 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    CFPropertyList (3.0.7)
+      base64
+      nkf
+      rexml
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
+    artifactory (3.0.17)
+    atomos (0.1.3)
+    aws-eventstream (1.3.0)
+    aws-partitions (1.970.0)
+    aws-sdk-core (3.202.2)
+      aws-eventstream (~> 1, >= 1.3.0)
+      aws-partitions (~> 1, >= 1.651.0)
+      aws-sigv4 (~> 1.9)
+      jmespath (~> 1, >= 1.6.1)
+    aws-sdk-kms (1.88.0)
+      aws-sdk-core (~> 3, >= 3.201.0)
+      aws-sigv4 (~> 1.5)
+    aws-sdk-s3 (1.159.0)
+      aws-sdk-core (~> 3, >= 3.201.0)
+      aws-sdk-kms (~> 1)
+      aws-sigv4 (~> 1.5)
+    aws-sigv4 (1.9.1)
+      aws-eventstream (~> 1, >= 1.0.2)
+    babosa (1.0.4)
+    base64 (0.2.0)
+    claide (1.1.0)
+    colored (1.2)
+    colored2 (3.1.2)
+    commander (4.6.0)
+      highline (~> 2.0.0)
+    declarative (0.0.20)
+    digest-crc (0.6.5)
+      rake (>= 12.0.0, < 14.0.0)
+    domain_name (0.6.20240107)
+    dotenv (2.8.1)
+    emoji_regex (3.2.3)
+    excon (0.111.0)
+    faraday (1.10.3)
+      faraday-em_http (~> 1.0)
+      faraday-em_synchrony (~> 1.0)
+      faraday-excon (~> 1.1)
+      faraday-httpclient (~> 1.0)
+      faraday-multipart (~> 1.0)
+      faraday-net_http (~> 1.0)
+      faraday-net_http_persistent (~> 1.0)
+      faraday-patron (~> 1.0)
+      faraday-rack (~> 1.0)
+      faraday-retry (~> 1.0)
+      ruby2_keywords (>= 0.0.4)
+    faraday-cookie_jar (0.0.7)
+      faraday (>= 0.8.0)
+      http-cookie (~> 1.0.0)
+    faraday-em_http (1.0.0)
+    faraday-em_synchrony (1.0.0)
+    faraday-excon (1.1.0)
+    faraday-httpclient (1.0.1)
+    faraday-multipart (1.0.4)
+      multipart-post (~> 2)
+    faraday-net_http (1.0.2)
+    faraday-net_http_persistent (1.2.0)
+    faraday-patron (1.0.0)
+    faraday-rack (1.0.0)
+    faraday-retry (1.0.3)
+    faraday_middleware (1.2.0)
+      faraday (~> 1.0)
+    fastimage (2.3.1)
+    fastlane (2.222.0)
+      CFPropertyList (>= 2.3, < 4.0.0)
+      addressable (>= 2.8, < 3.0.0)
+      artifactory (~> 3.0)
+      aws-sdk-s3 (~> 1.0)
+      babosa (>= 1.0.3, < 2.0.0)
+      bundler (>= 1.12.0, < 3.0.0)
+      colored (~> 1.2)
+      commander (~> 4.6)
+      dotenv (>= 2.1.1, < 3.0.0)
+      emoji_regex (>= 0.1, < 4.0)
+      excon (>= 0.71.0, < 1.0.0)
+      faraday (~> 1.0)
+      faraday-cookie_jar (~> 0.0.6)
+      faraday_middleware (~> 1.0)
+      fastimage (>= 2.1.0, < 3.0.0)
+      gh_inspector (>= 1.1.2, < 2.0.0)
+      google-apis-androidpublisher_v3 (~> 0.3)
+      google-apis-playcustomapp_v1 (~> 0.1)
+      google-cloud-env (>= 1.6.0, < 2.0.0)
+      google-cloud-storage (~> 1.31)
+      highline (~> 2.0)
+      http-cookie (~> 1.0.5)
+      json (< 3.0.0)
+      jwt (>= 2.1.0, < 3)
+      mini_magick (>= 4.9.4, < 5.0.0)
+      multipart-post (>= 2.0.0, < 3.0.0)
+      naturally (~> 2.2)
+      optparse (>= 0.1.1, < 1.0.0)
+      plist (>= 3.1.0, < 4.0.0)
+      rubyzip (>= 2.0.0, < 3.0.0)
+      security (= 0.1.5)
+      simctl (~> 1.6.3)
+      terminal-notifier (>= 2.0.0, < 3.0.0)
+      terminal-table (~> 3)
+      tty-screen (>= 0.6.3, < 1.0.0)
+      tty-spinner (>= 0.8.0, < 1.0.0)
+      word_wrap (~> 1.0.0)
+      xcodeproj (>= 1.13.0, < 2.0.0)
+      xcpretty (~> 0.3.0)
+      xcpretty-travis-formatter (>= 0.0.3, < 2.0.0)
+    gh_inspector (1.1.3)
+    google-apis-androidpublisher_v3 (0.54.0)
+      google-apis-core (>= 0.11.0, < 2.a)
+    google-apis-core (0.11.3)
+      addressable (~> 2.5, >= 2.5.1)
+      googleauth (>= 0.16.2, < 2.a)
+      httpclient (>= 2.8.1, < 3.a)
+      mini_mime (~> 1.0)
+      representable (~> 3.0)
+      retriable (>= 2.0, < 4.a)
+      rexml
+    google-apis-iamcredentials_v1 (0.17.0)
+      google-apis-core (>= 0.11.0, < 2.a)
+    google-apis-playcustomapp_v1 (0.13.0)
+      google-apis-core (>= 0.11.0, < 2.a)
+    google-apis-storage_v1 (0.31.0)
+      google-apis-core (>= 0.11.0, < 2.a)
+    google-cloud-core (1.7.1)
+      google-cloud-env (>= 1.0, < 3.a)
+      google-cloud-errors (~> 1.0)
+    google-cloud-env (1.6.0)
+      faraday (>= 0.17.3, < 3.0)
+    google-cloud-errors (1.4.0)
+    google-cloud-storage (1.47.0)
+      addressable (~> 2.8)
+      digest-crc (~> 0.4)
+      google-apis-iamcredentials_v1 (~> 0.1)
+      google-apis-storage_v1 (~> 0.31.0)
+      google-cloud-core (~> 1.6)
+      googleauth (>= 0.16.2, < 2.a)
+      mini_mime (~> 1.0)
+    googleauth (1.8.1)
+      faraday (>= 0.17.3, < 3.a)
+      jwt (>= 1.4, < 3.0)
+      multi_json (~> 1.11)
+      os (>= 0.9, < 2.0)
+      signet (>= 0.16, < 2.a)
+    highline (2.0.3)
+    http-cookie (1.0.7)
+      domain_name (~> 0.5)
+    httpclient (2.8.3)
+    jmespath (1.6.2)
+    json (2.7.2)
+    jwt (2.8.2)
+      base64
+    mini_magick (4.13.2)
+    mini_mime (1.1.5)
+    multi_json (1.15.0)
+    multipart-post (2.4.1)
+    nanaimo (0.3.0)
+    naturally (2.2.1)
+    nkf (0.2.0)
+    optparse (0.5.0)
+    os (1.1.4)
+    plist (3.7.1)
+    public_suffix (6.0.1)
+    rake (13.2.1)
+    representable (3.2.0)
+      declarative (< 0.1.0)
+      trailblazer-option (>= 0.1.1, < 0.2.0)
+      uber (< 0.2.0)
+    retriable (3.1.2)
+    rexml (3.3.6)
+      strscan
+    rouge (2.0.7)
+    ruby2_keywords (0.0.5)
+    rubyzip (2.3.2)
+    security (0.1.5)
+    signet (0.19.0)
+      addressable (~> 2.8)
+      faraday (>= 0.17.5, < 3.a)
+      jwt (>= 1.5, < 3.0)
+      multi_json (~> 1.10)
+    simctl (1.6.10)
+      CFPropertyList
+      naturally
+    strscan (3.1.0)
+    terminal-notifier (2.0.0)
+    terminal-table (3.0.2)
+      unicode-display_width (>= 1.1.1, < 3)
+    trailblazer-option (0.1.2)
+    tty-cursor (0.7.1)
+    tty-screen (0.8.2)
+    tty-spinner (0.9.3)
+      tty-cursor (~> 0.7)
+    uber (0.1.0)
+    unicode-display_width (2.5.0)
+    word_wrap (1.0.0)
+    xcodeproj (1.25.0)
+      CFPropertyList (>= 2.3.3, < 4.0)
+      atomos (~> 0.1.3)
+      claide (>= 1.0.2, < 2.0)
+      colored2 (~> 3.1)
+      nanaimo (~> 0.3.0)
+      rexml (>= 3.3.2, < 4.0)
+    xcpretty (0.3.0)
+      rouge (~> 2.0.7)
+    xcpretty-travis-formatter (1.0.1)
+      xcpretty (~> 0.2, >= 0.0.7)
+
+PLATFORMS
+  ruby
+  x86_64-linux
+
+DEPENDENCIES
+  fastlane
+
+BUNDLED WITH
+   2.5.18

frontend/android/README.md

@@ -2,13 +2,12 @@
 
 ### Keystore setup
 ```bash
-keytool -genkey -v -keystore release.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias release
+keytool -genkey -v -keystore release.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias upload
 ```
-- This is required to store local credentials securely (not used for now).
-- But necesseary in order to restrict the particular api key to a particular app (through the sha1 of the associated keystore).
+- This is required to store local credentials securely and more importantly to sign the app for google play store distribution.
 
 
-### Building and secret credentials
+### Using secret credentials during build
 Following the guide under [https://developers.google.com/maps/flutter-package/config#android_1](https://developers.google.com/maps/flutter-package/config#android_1).
 - Add the following to `android/build.gradle`:
     ```gradle
@@ -36,13 +35,39 @@ Following the guide under [https://developers.google.com/maps/flutter-package/co
         android:value="${MAPS_API_KEY}" />
     ```
 
+### Signing the app
+Compared to the flutter template application, a few changes have to be made:
+- Added to `android/app/build.gradle`:
+    ```gradle
+        signingConfigs {
+            release {
+                keyAlias = secretProperties['keyAlias']
+                keyPassword = secretProperties['keyPassword']
+                storeFile = secretProperties['storeFile'] ? file(secretProperties['storeFile']) : null
+                storePassword = secretProperties['storePassword']
+            }
+        }
+    ```
+- Changed the `buildTypes` to use the `release` signing config:
+    ```gradle
+        buildTypes {
+            release {
+                signingConfig signingConfigs.release
+            }
+        }
+    ```
+    This makes use of the `secretProperties` defined previously:
+    ```gradle
+        secretPropertiesFile.withReader('UTF-8') { reader ->
+            secretProperties.load(reader)
+        }
+    ```
+
 
 ### Using the credentials in CI
-- Add the base64 encoded credentials to the repository secrets (e.g. `ANDROID_SECRETS`).
+- Add the secret files to the repository secrets (e.g. `ANDROID_SECRETS_PROPERTIES`).
+
+- temporarily write them back to files during the CI execution:
     ```bash
-    base64 -i android/secrets.properties
+    echo {{ secrets.ANDROID_SECRETS }} >> android/secrets.properties
     ```
-- Use the following in the CI script:
-    ```bash
-    echo {{ secrets.ANDROID_SECRETS }} | base64 -d > android/secrets.properties
-    ```

frontend/android/app/build.gradle

@@ -76,11 +76,18 @@ android {
 
     }
 
+    signingConfigs {
+        release {
+            keyAlias = secretProperties['keyAlias']
+            keyPassword = secretProperties['keyPassword']
+            storeFile = secretProperties['storeFile'] ? file(secretProperties['storeFile']) : null
+            storePassword = secretProperties['storePassword']
+        }
+    }
+
     buildTypes {
         release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
+            signingConfig = signingConfigs.release
         }
     }
 }

frontend/android/fastlane/Appfile

@@ -0,0 +1,2 @@
+json_key_file("google-key.json") # Path to the json secret file - Follow https://docs.fastlane.tools/actions/supply/#setup to get one
+package_name("com.anydev.anyway") # e.g. com.krausefx.app

frontend/android/fastlane/Fastfile

@@ -0,0 +1,45 @@
+# This file contains the fastlane.tools configuration
+# You can find the documentation at https://docs.fastlane.tools
+#
+# For a list of all available actions, check out
+#
+#     https://docs.fastlane.tools/actions
+#
+# For a list of all available plugins, check out
+#
+#     https://docs.fastlane.tools/plugins/available-plugins
+#
+
+# Uncomment the line if you want fastlane to automatically update itself
+# update_fastlane
+
+default_platform(:android)
+
+platform :android do
+  desc "Runs all the tests"
+  lane :test do
+    gradle(task: "test")
+  end
+
+  desc "Submit a new build to the closed testing lane"
+  lane :closed_testing do
+    gradle(
+      task: "bundle",
+      # flavor: "staging",
+      )
+
+    upload_to_play_store(
+      track: 'alpha',
+      skip_upload_apk: true,
+      skip_upload_changelogs: true,
+
+      )
+  
+  end
+
+  desc "Deploy a new version to the Google Play"
+  lane :deploy do
+    gradle(task: "clean assembleRelease")
+    upload_to_play_store
+  end
+end

frontend/android/fastlane/README.md

@@ -0,0 +1,48 @@
+fastlane documentation
+----
+
+# Installation
+
+Make sure you have the latest version of the Xcode command line tools installed:
+
+```sh
+xcode-select --install
+```
+
+For _fastlane_ installation instructions, see [Installing _fastlane_](https://docs.fastlane.tools/#installing-fastlane)
+
+# Available Actions
+
+## Android
+
+### android test
+
+```sh
+[bundle exec] fastlane android test
+```
+
+Runs all the tests
+
+### android closed_testing
+
+```sh
+[bundle exec] fastlane android closed_testing
+```
+
+Submit a new build to the closed testing lane
+
+### android deploy
+
+```sh
+[bundle exec] fastlane android deploy
+```
+
+Deploy a new version to the Google Play
+
+----
+
+This README.md is auto-generated and will be re-generated every time [_fastlane_](https://fastlane.tools) is run.
+
+More information about _fastlane_ can be found on [fastlane.tools](https://fastlane.tools).
+
+The documentation of _fastlane_ can be found on [docs.fastlane.tools](https://docs.fastlane.tools).

frontend/android/fastlane/metadata/android/en-US/full_description.txt

@@ -0,0 +1,7 @@
+AnyWay - plan city trips your way
+
+AnyWay is a mobile application that helps users plan city trips. The app allows users to specify their preferences and constraints, and then generates a personalized itinerary for them. The planning follows some guiding principles:
+- **Personalization**:The user's preferences should be reflected in the choice of destinations.
+- **Efficiency**:The itinerary should be optimized for the user's constraints.
+- **Flexibility**: We aknowledge that tourism is a dynamic activity, and that users may want to change their plans on the go.
+- **Discoverability**: Tourism is an inherently exploratory activity. Once a rough itinerary is generated, detours and spontaneous decisions should be encouraged.

frontend/android/fastlane/metadata/android/en-US/short_description.txt

@@ -0,0 +1 @@
+AnyWay - plan city trips your way!

frontend/android/fastlane/metadata/android/en-US/title.txt

@@ -0,0 +1 @@
+AnyWay

frontend/android/fastlane/report.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
+  <testsuite name="fastlane.lanes">
+    
+    
+    
+      
+      <testcase classname="fastlane.lanes" name="0: default_platform" time="0.000594355">
+        
+      </testcase>
+    
+      
+      <testcase classname="fastlane.lanes" name="1: bundle" time="11.355126485">
+        
+      </testcase>
+    
+      
+      <testcase classname="fastlane.lanes" name="2: upload_to_play_store" time="63.414149183">
+        
+      </testcase>
+    
+  </testsuite>
+</testsuites>