Add index page to parsers to display meta links

app.py

@@ -1,3 +1,5 @@
+import os
+
 from flask import Flask, abort
 
 import parsers
@@ -7,11 +9,19 @@ app = Flask(__name__)
 
 parsers.define_parsers()
 
+VIRTUAL_HOST=os.getenv('VIRTUAL_HOST')
 
-@app.route('/mensa/<parser_name>/<mensa_name>')
-def mensa(parser_name, mensa_name):
+@app.route('/mensa/<parser_name>.json')
+def index(parser_name):
     try:
-        return utils.get_parser(parser_name).parse(mensa_name)
+        return utils.get_parser(parser_name).get_canteen_index(f'https://{VIRTUAL_HOST}/meta')
     except KeyError:
         abort(404)
 
+
+@app.route('/mensa/<parser_name>/feed/<canteen_name>')
+def mensa(parser_name, canteen_name):
+    try:
+        return utils.get_parser(parser_name).parse(canteen_name)
+    except KeyError:
+        abort(404)

parsers/tuebingen.py

@@ -4,7 +4,7 @@ from urllib.request import urlopen, Request
 
 from pyopenmensa.feed import LazyBuilder
 
-from utils import Parser
+from utils import Parser, Canteen
 
 allergens = {
     'Gl-a': 'Weizen',
@@ -90,4 +90,4 @@ def define_parsers():
 
     parser = Parser(canteen_json['name'], handler=parse_url, shared_prefix=canteen_json['base_url'])
     for canteen in canteen_json['canteens']:
-        parser.define(canteen['id'], canteen['suffix'])
+        parser.define(Canteen(canteen['id'], canteen['suffix'], canteen['name'], canteen['street'], canteen['city']))

utils.py

@@ -1,8 +1,26 @@
 parser_list = {}
 
 
+class Canteen:
+    canteen_id: str
+    suffix: str
+    name: str
+    street: str
+    city: str
+
+    def __init__(self, canteen_id, suffix, name, street, city):
+        self.canteen_id = canteen_id
+        self.suffix = suffix
+        self.name = name
+        self.street = street
+        self.city = city
+
+    def address(self):
+        return f'{self.street}, {self.city}'
+
+
 class Parser:
-    sources = {}
+    canteens: dict[str, Canteen] = {}
 
     def __init__(self, name, handler, shared_prefix: str):
         self.name = name
@@ -10,11 +28,18 @@ class Parser:
         self.shared_prefix = shared_prefix
         parser_list[name] = self
 
-    def define(self, name: str, suffix: str):
-        self.sources[name] = suffix
+    def define(self, canteen: Canteen):
+        self.canteens[canteen.canteen_id] = canteen
 
-    def parse(self, source: str):
-        return self.handler(self.shared_prefix + self.sources[source])
+    def parse(self, canteen: str):
+        return self.handler(self.shared_prefix + self.canteens[canteen].suffix)
+
+    def get_canteen_index(self, prefix: str):
+        index: dict[str, str] = {}
+        canteen: Canteen
+        for canteen in self.canteens.values():
+            index[canteen.canteen_id] = f'{prefix}/{canteen.canteen_id}.xml'
+        return index
 
 
 def get_parser(parser_name: str) -> Parser: