Initial commit

app/services/favorite_service.py

@@ -0,0 +1,79 @@
+"""Favorites / wishlist service."""
+
+from __future__ import annotations
+
+from datetime import datetime, timezone
+
+from app.core.exceptions import ConflictException, NotFoundException
+from app.core.supabase import get_supabase_admin
+
+
+class FavoriteService:
+    def __init__(self):
+        self.db = get_supabase_admin()
+
+    def add_favorite(self, user_id: str, listing_id: str) -> dict:
+        # Check listing exists
+        listing = self.db.table("listings").select("id").eq("id", listing_id).execute()
+        if not listing.data:
+            raise NotFoundException("Listing not found")
+
+        # Check if already favorited
+        existing = (
+            self.db.table("favorites")
+            .select("id")
+            .eq("user_id", user_id)
+            .eq("listing_id", listing_id)
+            .execute()
+        )
+        if existing.data:
+            raise ConflictException("Listing already in favorites")
+
+        now = datetime.now(timezone.utc).isoformat()
+        result = (
+            self.db.table("favorites")
+            .insert({"user_id": user_id, "listing_id": listing_id, "created_at": now})
+            .execute()
+        )
+        if not result.data:
+            raise Exception("Failed to add favorite")
+        return result.data[0]
+
+    def remove_favorite(self, user_id: str, listing_id: str) -> dict:
+        result = (
+            self.db.table("favorites")
+            .delete()
+            .eq("user_id", user_id)
+            .eq("listing_id", listing_id)
+            .execute()
+        )
+        if not result.data:
+            raise NotFoundException("Favorite not found")
+        return {"message": "Removed from favorites"}
+
+    def list_favorites(self, user_id: str) -> dict:
+        result = (
+            self.db.table("favorites")
+            .select(
+                "*, listings("
+                "id, title, description, price, images, location, status, "
+                "agency_id, category_id, listing_type, condition, negotiable, "
+                "views_count, created_at, updated_at"
+                ")",
+                count="exact",
+            )
+            .eq("user_id", user_id)
+            .order("created_at", desc=True)
+            .execute()
+        )
+        return {"favorites": result.data, "total": result.count or 0}
+
+    def is_favorited(self, user_id: str, listing_id: str) -> bool:
+        result = (
+            self.db.table("favorites")
+            .select("id")
+            .eq("user_id", user_id)
+            .eq("listing_id", listing_id)
+            .execute()
+        )
+        return len(result.data) > 0