feat: Enhance idea retrieval to include the latest generation and support user-specific ideas not tied to a project, while also improving asset storage uniqueness and adjusting generation cancellation timeout.

repos/assets_repo.py

@@ -1,6 +1,7 @@
 from typing import List, Optional
 import logging
 from bson import ObjectId
+from uuid import uuid4
 from motor.motor_asyncio import AsyncIOMotorClient
 
 from models.Asset import Asset
@@ -19,7 +20,8 @@ class AssetsRepo:
              # Main data
              if asset.data:
                 ts = int(asset.created_at.timestamp())
-                object_name = f"{asset.type.value}/{ts}_{asset.name}"
+                uid = uuid4().hex[:8]
+                object_name = f"{asset.type.value}/{ts}_{uid}_{asset.name}"
                 
                 uploaded = await self.s3.upload_file(object_name, asset.data)
                 if uploaded:
@@ -32,7 +34,8 @@ class AssetsRepo:
              # Thumbnail
              if asset.thumbnail:
                 ts = int(asset.created_at.timestamp())
-                thumb_name = f"{asset.type.value}/thumbs/{ts}_{asset.name}_thumb.jpg"
+                uid = uuid4().hex[:8]
+                thumb_name = f"{asset.type.value}/thumbs/{ts}_{uid}_{asset.name}_thumb.jpg"
                 
                 uploaded_thumb = await self.s3.upload_file(thumb_name, asset.thumbnail)
                 if uploaded_thumb:
@@ -134,7 +137,8 @@ class AssetsRepo:
         if self.s3:
             if asset.data:
                  ts = int(asset.created_at.timestamp())
-                 object_name = f"{asset.type.value}/{ts}_{asset.name}"
+                 uid = uuid4().hex[:8]
+                 object_name = f"{asset.type.value}/{ts}_{uid}_{asset.name}"
                  if await self.s3.upload_file(object_name, asset.data):
                       asset.minio_object_name = object_name
                       asset.minio_bucket = self.s3.bucket_name
@@ -142,7 +146,8 @@ class AssetsRepo:
             
             if asset.thumbnail:
                  ts = int(asset.created_at.timestamp())
-                 thumb_name = f"{asset.type.value}/thumbs/{ts}_{asset.name}_thumb.jpg"
+                 uid = uuid4().hex[:8]
+                 thumb_name = f"{asset.type.value}/thumbs/{ts}_{uid}_{asset.name}_thumb.jpg"
                  if await self.s3.upload_file(thumb_name, asset.thumbnail):
                       asset.minio_thumbnail_object_name = thumb_name
                       asset.thumbnail = None
@@ -216,7 +221,8 @@ class AssetsRepo:
                 created_at = doc.get("created_at")
                 ts = int(created_at.timestamp()) if created_at else 0
                 
-                object_name = f"{type_}/{ts}_{asset_id}_{name}"
+                uid = uuid4().hex[:8]
+                object_name = f"{type_}/{ts}_{uid}_{asset_id}_{name}"
                 if await self.s3.upload_file(object_name, data):
                     await self.collection.update_one(
                         {"_id": asset_id},
@@ -243,7 +249,8 @@ class AssetsRepo:
                 created_at = doc.get("created_at")
                 ts = int(created_at.timestamp()) if created_at else 0
                 
-                thumb_name = f"{type_}/thumbs/{ts}_{asset_id}_{name}_thumb.jpg"
+                uid = uuid4().hex[:8]
+                thumb_name = f"{type_}/thumbs/{ts}_{uid}_{asset_id}_{name}_thumb.jpg"
                 if await self.s3.upload_file(thumb_name, thumb):
                     await self.collection.update_one(
                         {"_id": asset_id},

repos/generation_repo.py

@@ -98,7 +98,7 @@ class GenerationRepo:
             generations.append(Generation(**generation))
         return generations
 
-    async def cancel_stale_generations(self, timeout_minutes: int = 60) -> int:
+    async def cancel_stale_generations(self, timeout_minutes: int = 5) -> int:
         cutoff_time = datetime.now(UTC) - timedelta(minutes=timeout_minutes)
         res = await self.collection.update_many(
             {

repos/idea_repo.py

@@ -20,14 +20,43 @@ class IdeaRepo:
             return Idea(**res)
         return None
 
-    async def get_ideas(self, project_id: str, limit: int = 20, offset: int = 0) -> List[Idea]:
-        filter = {"project_id": project_id, "is_deleted": False}
-        res = await self.collection.find(filter).sort("updated_at", -1).skip(offset).limit(limit).to_list(None)
-        ideas = []
-        for doc in res:
-            doc["id"] = str(doc.pop("_id"))
-            ideas.append(Idea(**doc))
-        return ideas
+    async def get_ideas(self, project_id: Optional[str], user_id: str, limit: int = 20, offset: int = 0) -> List[dict]:
+        if project_id:
+            match_stage = {"project_id": project_id, "is_deleted": False}
+        else:
+            match_stage = {"created_by": user_id, "project_id": None, "is_deleted": False}
+            
+        pipeline = [
+            {"$match": match_stage},
+            {"$sort": {"updated_at": -1}},
+            {"$skip": offset},
+            {"$limit": limit},
+            # Add string id field for lookup
+            {"$addFields": {"str_id": {"$toString": "$_id"}}},
+            # Lookup generations
+            {
+                "$lookup": {
+                    "from": "generations",
+                    "let": {"idea_id": "$str_id"},
+                    "pipeline": [
+                        {"$match": {"$expr": {"$eq": ["$idea_id", "$$idea_id"]}}},
+                        {"$sort": {"created_at": -1}},  # Ensure we get the latest
+                        {"$limit": 1}
+                    ],
+                    "as": "generations"
+                }
+            },
+            # Unwind generations array (preserve ideas without generations)
+            {"$unwind": {"path": "$generations", "preserveNullAndEmptyArrays": True}},
+            # Rename for clarity
+            {"$addFields": {
+                "last_generation": "$generations",
+                "id": "$str_id"
+            }},
+            {"$project": {"generations": 0, "str_id": 0, "_id": 0}}
+        ]
+        
+        return await self.collection.aggregate(pipeline).to_list(None)
 
     async def delete_idea(self, idea_id: str) -> bool:
         if not ObjectId.is_valid(idea_id):