fix bugs, implement placing orders

src/ez_lan_manager/components/ShoppingCartAndOrders.py

@@ -1,19 +1,24 @@
-from typing import Optional
+from asyncio import sleep, create_task
 
 import rio
-from rio import Component, Column, Text, TextStyle, Button, Row, ScrollContainer, Spacer
+from rio import Component, Column, Text, TextStyle, Button, Row, ScrollContainer, Spacer, Popup, PopupOpenOrCloseEvent
 
 from src.ez_lan_manager.components.CateringCartItem import CateringCartItem
 from src.ez_lan_manager.components.CateringOrderItem import CateringOrderItem
 from src.ez_lan_manager.services.AccountingService import AccountingService
-from src.ez_lan_manager.services.CateringService import CateringService
-from src.ez_lan_manager.types.CateringOrder import CateringOrder
+from src.ez_lan_manager.services.CateringService import CateringService, CateringError, CateringErrorType
+from src.ez_lan_manager.types.CateringOrder import CateringOrder, CateringMenuItemsWithAmount
 from src.ez_lan_manager.types.SessionStorage import SessionStorage
 
+POPUP_CLOSE_TIMEOUT_SECONDS = 3
 
 class ShoppingCartAndOrders(Component):
     show_cart: bool = True
     orders: list[CateringOrder] = []
+    order_button_loading: bool = False
+    popup_message: str = ""
+    popup_is_shown: bool = False
+    popup_is_error: bool = True
 
     async def switch(self) -> None:
         self.show_cart = not self.show_cart
@@ -40,15 +45,53 @@ class ShoppingCartAndOrders(Component):
         if not user_id:
             return
         cart = catering_service.get_cart(user_id)
-        cart.append(await catering_service.get_menu_item_by_id(article_id))
+        item_to_add = await catering_service.get_menu_item_by_id(article_id)
+        cart.append(item_to_add)
         catering_service.save_cart(user_id, cart)
         await self.force_refresh()
 
+    async def show_popup(self, text: str, is_error: bool) -> None:
+        self.popup_is_error = is_error
+        self.popup_message = text
+        self.popup_is_shown = True
+        await self.force_refresh()
+        await sleep(POPUP_CLOSE_TIMEOUT_SECONDS)
+        self.popup_is_shown = False
+        await self.force_refresh()
+
+    async def on_order_pressed(self) -> None:
+        self.order_button_loading = True
+        await self.force_refresh()
+
+        user_id = self.session[SessionStorage].user_id
+        cart = self.session[CateringService].get_cart(user_id)
+        if len(cart) < 1:
+            _ = create_task(self.show_popup("Warenkorb leer", True))
+        else:
+            items_with_amounts: CateringMenuItemsWithAmount = {}
+            for item in cart:
+                try:
+                    items_with_amounts[item] += 1
+                except KeyError:
+                    items_with_amounts[item] = 1
+            try:
+                await self.session[CateringService].place_order(items_with_amounts, user_id)
+            except CateringError as catering_error:
+                if catering_error.error_type == CateringErrorType.INCLUDES_DISABLED_ITEM:
+                    _ = create_task(self.show_popup("Warenkorb enthält gesperrte Artikel", True))
+                elif catering_error.error_type == CateringErrorType.INSUFFICIENT_FUNDS:
+                    _ = create_task(self.show_popup("Guthaben nicht ausreichend", True))
+                else:
+                    _ = create_task(self.show_popup("Unbekannter Fehler", True))
+        self.session[CateringService].save_cart(self.session[SessionStorage].user_id, [])
+        self.order_button_loading = False
+        _ = create_task(self.show_popup("Bestellung erfolgreich aufgegeben!", False))
+
     def build(self) -> rio.Component:
         user_id = self.session[SessionStorage].user_id
         catering_service = self.session[CateringService]
+        cart = catering_service.get_cart(user_id)
         if self.show_cart:
-            cart = catering_service.get_cart(user_id)
             cart_container = ScrollContainer(
                 content=Column(
                     *[CateringCartItem(
@@ -66,6 +109,13 @@ class ShoppingCartAndOrders(Component):
             )
             return Column(
                     cart_container,
+                    Popup(
+                        anchor=cart_container,
+                        content=Text(self.popup_message, style=TextStyle(fill=self.session.theme.danger_color if self.popup_is_error else self.session.theme.success_color), wrap=True, margin=2, justify="center", min_width=20),
+                        is_open=self.popup_is_shown,
+                        position="center",
+                        color=self.session.theme.primary_color
+                    ),
                     Row(
                         Text(
                             text=f"Preis: {AccountingService.make_euro_string_from_int(sum(cart_item.price for cart_item in cart))}",
@@ -98,7 +148,9 @@ class ShoppingCartAndOrders(Component):
                             margin_left=0,
                             shape="rectangle",
                             style="major",
-                            color="primary"
+                            color="primary",
+                            on_press=self.on_order_pressed,
+                            is_loading=self.order_button_loading
                         )
                     )
             )