Add receipt printing

requirements.txt

@@ -64,3 +64,4 @@ watchfiles==1.2.0
 wcwidth==0.7.0
 websockets==16.0
 yarl==1.24.2
+requests==2.34.2

src/elm/__init__.py

@@ -8,7 +8,7 @@ from from_root import from_root
 from rio import App, Theme, Color, Font, Icon, Session
 
 from elm.components.RootComponent import RootComponent
-from elm.services import ConfigurationService, DatabaseService, UserService, LocalData, LocalDataService, MailingService, AccountingService, PreloadService
+from elm.services import ConfigurationService, DatabaseService, UserService, LocalData, LocalDataService, MailingService, AccountingService, PreloadService, ReceiptPrintingService
 from elm.types import UserSession
 
 logger = logging.getLogger("ELM")
@@ -79,7 +79,7 @@ app = App(
     theme=theme,
     assets_dir=Path(__file__).parent / "assets",
     build=RootComponent,
-    default_attachments=[LocalData(), configuration_service, database_service, UserService(), LocalDataService(), mailing_service, AccountingService(configuration_service, mailing_service), PreloadService()],
+    default_attachments=[LocalData(), configuration_service, database_service, UserService(), LocalDataService(), mailing_service, AccountingService(configuration_service, mailing_service), PreloadService(), ReceiptPrintingService(configuration_service.get_receipt_printing_configuration(), configuration_service.DEV_MODE_ACTIVE)],
     on_app_start=on_app_start,
     on_session_start=on_session_start,
     icon=from_root("src/elm/assets/img/favicon.png"),

src/elm/components/CateringCart.py

@@ -4,7 +4,7 @@ from functools import partial
 from rio import Component, Rectangle, Column, Text, Spacer, List, Row, IconButton
 
 from elm.components import ElmButton
-from elm.services import AccountingService
+from elm.services import AccountingService, ReceiptPrintingService
 from elm.types import User, UserSession
 from elm.types.CateringTypes import CateringOrderedItem, CateringOrder
 
@@ -79,6 +79,8 @@ class CateringCart(Component):
         self.order_button_loading = False
         self.status_text = "Bestellt!"
         self.status_is_error = False
+
+        self.session.create_task(self.session[ReceiptPrintingService].print_order(user, new_order))
         return None
 
 

src/elm/services/ReceiptPrintingService.py

@@ -0,0 +1,60 @@
+import logging
+from datetime import timezone
+from zoneinfo import ZoneInfo
+
+import requests
+from bson import ObjectId
+
+from elm.types import Seat
+from elm.types.CateringTypes import CateringOrder
+from elm.types.ConfigurationTypes import ReceiptPrintingConfiguration
+from elm.types.User import User
+
+logger = logging.getLogger(__name__.split(".")[-1])
+logging.getLogger("urllib3").setLevel(logging.FATAL)  # Disable logging for urllib3
+
+class ReceiptPrintingService:
+    def __init__(self, config: ReceiptPrintingConfiguration, dev_mode_enabled: bool) -> None:
+        self._config = config
+        self._dev_mode_enabled = dev_mode_enabled
+        self._url = f"http://{self._config.host}:{self._config.port}/{self._config.order_print_endpoint}"
+
+    async def print_order(self, user: User, order: CateringOrder) -> None:
+        seat = await Seat.find_one({"user.$id": ObjectId(user.id)})
+        if seat is None:
+            seat_id = " - "
+        else:
+            seat_id = str(seat.seat_id)
+
+
+        menu_items_payload = []
+        for item in order.items:
+            menu_items_payload.append({
+                "menu_item_name": item.name,
+                "mods": [f"{'MIT' if mod.selected else 'OHNE'} {mod.label}" for mod in item.selected_modifiers],
+                "amount": 1
+            })
+
+        payload = {
+            "order_id": str(order.id)[-5:],
+            "order_date": order.created_at.replace(tzinfo=timezone.utc).astimezone(ZoneInfo("Europe/Berlin")).strftime('%Y-%m-%dT%H:%M:%S.%f')[:-3] + 'Z',
+            "customer_name": user.user_name,
+            "seat_id": seat_id,
+            "items": menu_items_payload
+        }
+
+        logger.info(f"Sending print order to {self._url}: {payload}")
+        try:
+            response = requests.post(
+                self._url,
+                json=payload,
+                headers={"x-password": self._config.password},
+                timeout=2.0
+            )
+            if response.status_code != 200:
+                logger.error(f"Received an error with code {response.status_code}: {response.text}")
+        except Exception as e:
+            if self._dev_mode_enabled:
+                logger.info("An error occurred trying to print a receipt: %s", e)
+                return
+            logger.error("An error occurred trying to print a receipt: %s", e)

src/elm/services/__init__.py

@@ -5,3 +5,4 @@ from .LocalDataService import LocalData, LocalDataService
 from .MailingService import MailingService
 from .AccountingService import AccountingService
 from .PreloadService import PreloadService
+from .ReceiptPrintingService import ReceiptPrintingService