Add multi-provider event discovery and improve sync UI

backend/app/providers/bandsintown.py

@@ -0,0 +1,85 @@
+from datetime import datetime
+from urllib.parse import quote
+
+import requests
+
+from app.config import settings
+from app.models import RegionScope, WatchType
+
+
+class BandsintownProvider:
+    base_url = "https://rest.bandsintown.com"
+    source_name = "bandsintown"
+
+    def is_configured(self) -> bool:
+        return bool(settings.bandsintown_app_id)
+
+    def search_events(
+        self,
+        term: str,
+        watch_type: WatchType,
+        region_scope: RegionScope,
+    ) -> list[dict]:
+        if not self.is_configured():
+            return []
+
+        if watch_type != WatchType.artist:
+            return []
+
+        artist_name = quote(term, safe="")
+        url = f"{self.base_url}/artists/{artist_name}/events"
+        response = requests.get(
+            url,
+            params={"app_id": settings.bandsintown_app_id, "date": "upcoming"},
+            timeout=30,
+        )
+
+        if response.status_code == 404:
+            return []
+
+        response.raise_for_status()
+        payload = response.json()
+        if not isinstance(payload, list):
+            return []
+
+        results: list[dict] = []
+        for item in payload:
+            venue = item.get("venue") or {}
+            city = venue.get("city")
+            country = venue.get("country")
+
+            if region_scope == RegionScope.hamburg and (city or "").casefold() != "hamburg":
+                continue
+            if region_scope == RegionScope.germany and (country or "").casefold() != "germany":
+                continue
+
+            datetime_value = item.get("datetime")
+            event_date = None
+            if datetime_value:
+                try:
+                    event_date = datetime.fromisoformat(
+                        datetime_value.replace("Z", "+00:00")
+                    ).replace(tzinfo=None)
+                except ValueError:
+                    event_date = None
+
+            offers = item.get("offers") or []
+            ticket_url = next((offer.get("url") for offer in offers if offer.get("url")), None)
+
+            results.append(
+                {
+                    "external_id": str(item.get("id")),
+                    "title": item.get("title") or f"{term} live",
+                    "matched_term": term,
+                    "venue_name": venue.get("name"),
+                    "city": city,
+                    "country_code": "DE" if country == "Germany" else country,
+                    "event_date": event_date,
+                    "ticket_url": ticket_url or item.get("url"),
+                    "image_url": item.get("artist", {}).get("thumb_url"),
+                    "raw_payload": item,
+                }
+            )
+
+        return results
+