v1.0

backend/app/services/recipes.py

@@ -1,4 +1,14 @@
-DUMMY_RECIPES = [
+import random
+import re
+from html import unescape
+from html.parser import HTMLParser
+from urllib.parse import urljoin
+from urllib.request import Request, urlopen
+
+
+CHEFKOCH_TODAY_URL = "https://www.chefkoch.de/rezepte/was-koche-ich-heute/"
+
+FALLBACK_RECIPES = [
     {
         "title": "Cremige Pasta mit Tomaten",
         "url": "https://www.chefkoch.de/",
@@ -50,6 +60,90 @@ DUMMY_RECIPES = [
 ]
 
 
+class ChefkochTodayParser(HTMLParser):
+    def __init__(self):
+        super().__init__()
+        self.recipes = []
+        self._current_link = None
+        self._current_text = []
+        self._current_image_url = ""
+
+    def handle_starttag(self, tag, attrs):
+        attrs = dict(attrs)
+        if tag == "a":
+            href = attrs.get("href", "")
+            if re.search(r"/rezepte/\d+/.+\.html", href):
+                self._current_link = urljoin(CHEFKOCH_TODAY_URL, href)
+                self._current_text = []
+                self._current_image_url = ""
+        elif tag == "img" and self._current_link:
+            self._current_image_url = attrs.get("src") or attrs.get("data-src") or ""
+
+    def handle_data(self, data):
+        if self._current_link:
+            self._current_text.append(data)
+
+    def handle_endtag(self, tag):
+        if tag != "a" or not self._current_link:
+            return
+
+        title, meta = parse_recipe_text(" ".join(self._current_text))
+        if title and not any(recipe["url"] == self._current_link for recipe in self.recipes):
+            self.recipes.append(
+                {
+                    "title": title,
+                    "url": self._current_link,
+                    "image_url": self._current_image_url,
+                    "meta": meta,
+                }
+            )
+
+        self._current_link = None
+        self._current_text = []
+        self._current_image_url = ""
+
+
+def parse_recipe_text(text):
+    text = unescape(re.sub(r"\s+", " ", text)).strip()
+    text = text.replace("rating_star", "").strip()
+
+    rating_match = re.match(r"(?P<rating>\d+[,.]\d)\s*/?\s*5?\s*\((?P<count>\d+)\)\s*(?P<title>.+)", text)
+    if rating_match:
+        rating = rating_match.group("rating")
+        count = rating_match.group("count")
+        title = clean_recipe_title(rating_match.group("title"))
+        return title, f"{rating}/5 ({count})"
+
+    return clean_recipe_title(text), ""
+
+
+def clean_recipe_title(title):
+    title = re.sub(r"\s+von\s+essen\s*&\s*trinken.*$", "", title, flags=re.IGNORECASE)
+    title = re.sub(r"[^\w\sÄÖÜäöüß.,&'’:/()\-]", "", title)
+    return re.sub(r"\s+", " ", title).strip()
+
+
+def fetch_chefkoch_today_recipes():
+    cache_buster = random.randint(100000, 999999)
+    request = Request(
+        f"{CHEFKOCH_TODAY_URL}?rf={cache_buster}",
+        headers={
+            "User-Agent": "Mozilla/5.0 (compatible; RezeptFinder/1.0)",
+            "Cache-Control": "no-cache",
+        },
+    )
+    with urlopen(request, timeout=8) as response:
+        html = response.read().decode("utf-8", errors="replace")
+
+    parser = ChefkochTodayParser()
+    parser.feed(html)
+    return parser.recipes[:8]
+
+
 def get_recipes():
-    # Später ersetzen durch Chefkoch-Vorschau-Importer.
-    return DUMMY_RECIPES
+    try:
+        recipes = fetch_chefkoch_today_recipes()
+    except Exception:
+        return FALLBACK_RECIPES
+
+    return recipes or FALLBACK_RECIPES