tentatively add list command

bot/commands/list/list.py

@@ -0,0 +1,190 @@
+import os
+from pathlib import Path
+from telegram.ext import ConversationHandler, CommandHandler, MessageHandler, filters, CallbackQueryHandler
+from telegram import InlineKeyboardButton, InlineKeyboardMarkup
+
+from .models import ListModel, set_db
+
+MEDIA_DIR = Path(os.getenv("MEDIA_DIR"))
+DB_DIR = MEDIA_DIR / "lists_db"
+DB_DIR.mkdir(parents=True, exist_ok=True)
+
+
+NAME, NEW, ACTION, ITEMADD, ITEMREMOVE = range(5)
+
+
+class ListHandler:
+    """Create and edit lists"""
+
+    def __init__(self, entry_string, models):
+        self.models = models
+
+        self.handler = ConversationHandler(
+            entry_points=[CommandHandler(entry_string, self.entry_point)],
+            states={
+                NAME: [
+                    CallbackQueryHandler(self.choose_list, pattern="^list-"),
+                    CallbackQueryHandler(self.new_list, pattern="^new$"),
+                    ],
+                NEW : [MessageHandler(filters.TEXT, callback=self.new_listname)],
+                ACTION: [
+                    CallbackQueryHandler(self.list_add, pattern="^add$"),
+                    CallbackQueryHandler(self.list_remove, pattern="^remove$"),
+                    CallbackQueryHandler(self.list_clear, pattern="^clear$"),
+                    CallbackQueryHandler(self.list_delete, pattern="^delete$"),
+                    CallbackQueryHandler(self.list_print, pattern="^print$"),
+                    CallbackQueryHandler(self.list_menu, pattern="^overview$"),
+                    ],
+                ITEMADD : [MessageHandler(filters.TEXT, callback=self.list_add_item)],
+                ITEMREMOVE : [CallbackQueryHandler(self.list_remove_index)]
+            },
+            fallbacks=[CommandHandler('list', self.entry_point)],
+        )
+
+
+    async def entry_point(self, update, context) -> None:
+        set_db(DB_DIR / f"{update.message.chat_id}.db")
+        lists = ListModel.select()
+        keyboard = [[InlineKeyboardButton(k.name, callback_data=f"list-{k.name}")] for k in lists] + \
+            [[InlineKeyboardButton("New list", callback_data="new")]]
+
+        reply_markup = InlineKeyboardMarkup(keyboard)
+        await update.message.reply_text(text="Here are the existing lists. You can also create a new one:", reply_markup=reply_markup)
+        return NAME
+
+
+    async def choose_list(self, update, context) -> None:
+        query = update.callback_query
+        data = query.data
+        name = data.replace("list-","")
+        await query.answer()
+        self.current_name = name
+
+        keyboard = [
+            [InlineKeyboardButton("Add item", callback_data="add")],
+            [InlineKeyboardButton("Remove item", callback_data="remove")],
+            [InlineKeyboardButton("Clear list", callback_data="clear")],
+            [InlineKeyboardButton("Print list", callback_data="print")],
+            [InlineKeyboardButton("Delete list", callback_data="delete")],
+        ]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+
+        await query.edit_message_text("Very well. For " + name + " the following actions are available:", reply_markup=reply_markup)
+        return ACTION
+
+
+    async def list_menu(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+
+        keyboard = [
+            [InlineKeyboardButton("Add item", callback_data="add")],
+            [InlineKeyboardButton("Remove item", callback_data="remove")],
+            [InlineKeyboardButton("Clear list", callback_data="clear")],
+            [InlineKeyboardButton("Print list", callback_data="print")],
+            [InlineKeyboardButton("Delete list", callback_data="delete")],
+        ]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+
+        await query.edit_message_text("Very well. For " + self.current_name + " the following actions are available:", reply_markup=reply_markup)
+        return ACTION
+
+
+    async def new_list(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        await query.edit_message_text("What's the name of the new list?")
+        return NEW
+        
+
+    async def new_listname(self, update, context) -> None:
+        name = update.message.text
+        try:
+            ListModel.create(name = name)
+            keyboard = [[InlineKeyboardButton("Add an item", callback_data="add"), InlineKeyboardButton("To the menu!", callback_data="overview")]]
+            reply_markup = InlineKeyboardMarkup(keyboard)
+            self.current_name = name
+            await update.message.reply_text("Thanks. List " + name + " was successfully created.", reply_markup=reply_markup)
+            return ACTION
+        except Exception as e:
+            await update.message.reply_text("Oh no! Encountered exception: {}".format(e))
+            return ConversationHandler.END
+
+    
+    async def list_add(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        await query.edit_message_text("What would you like to add?")
+        return ITEMADD
+
+
+    async def list_remove(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        sl = ListModel.get(name = self.current_name)
+
+        keyboard = [[InlineKeyboardButton(k, callback_data=i)] for i,k in enumerate(sl)]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+
+        await query.edit_message_text("Which item would you like to remove?", reply_markup = reply_markup)
+        return ITEMREMOVE
+
+
+    async def list_clear(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        ListModel.get(name = self.current_name).content_list = []
+        keyboard = [[InlineKeyboardButton("Add an item", callback_data="add"), InlineKeyboardButton("Back to the menu", callback_data="overview")]]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+        await query.edit_message_text("List " + self.current_name + " cleared", reply_markup=reply_markup)
+        return ACTION
+
+
+    async def list_delete(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        ListModel.get(name = self.current_name).delete_instance()
+        await query.edit_message_text("List " + self.current_name + " deleted")
+        return ConversationHandler.END
+
+
+    async def list_print(self, update, context) -> None:
+        query = update.callback_query
+        await query.answer()
+        it = ListModel.get(name = self.current_name).content_list
+        if it:
+            content = "\n* ".join(it)
+        else:
+            content = "List empty"
+        
+        keyboard = [[InlineKeyboardButton("Add an item", callback_data="add"), InlineKeyboardButton("Back to the menu", callback_data="overview")]]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+        await query.edit_message_text("Content of " + self.current_name + ":\n" + content, reply_markup=reply_markup)
+        return ACTION
+
+
+    async def list_add_item(self, update, context) -> None:
+        item = update.message.text
+        ListModel.get(name = self.current_name).content_list = ListModel.get(name = self.current_name).content_list + [item]
+        # TODO test me!
+        keyboard = [[InlineKeyboardButton("Add some more", callback_data="add"), InlineKeyboardButton("Back to the menu", callback_data="overview")]]
+        reply_markup = InlineKeyboardMarkup(keyboard)
+        await update.message.reply_text("Added " + item, reply_markup=reply_markup)
+        return ACTION
+
+
+    async def list_remove_index(self, update, context) -> None:
+        query = update.callback_query
+        ind = int(query.data)
+        await query.answer()
+
+        list_object = ListModel.get(name = self.current_name)
+        old = list_object.content_list
+        name = old.pop(ind)
+        self.db_utils.list_update(self.current_name, replace=old)
+
+        keyboard = [[InlineKeyboardButton("Remove another", callback_data="remove"), InlineKeyboardButton("Back to the menu", callback_data="overview")]]
+        reply_markup = InlineKeyboardMarkup(keyboard)      
+
+        await query.edit_message_text("Removed " + name, reply_markup=reply_markup)
+        return ACTION