feat: Implement project management with new models, repositories, and API endpoints, and enhance character management with project association and DTOs.

repos/project_repo.py

@@ -0,0 +1,62 @@
+from typing import List, Optional
+from bson import ObjectId
+from motor.motor_asyncio import AsyncIOMotorClient
+from models.Project import Project
+
+class ProjectRepo:
+    def __init__(self, client: AsyncIOMotorClient, db_name="bot_db"):
+        self.collection = client[db_name]["projects"]
+
+    async def create_project(self, project: Project) -> str:
+        res = await self.collection.insert_one(project.model_dump())
+        return str(res.inserted_id)
+
+    async def get_project(self, project_id: str) -> Optional[Project]:
+        if not ObjectId.is_valid(project_id):
+            return None
+        res = await self.collection.find_one({"_id": ObjectId(project_id)})
+        if res:
+            res["id"] = str(res.pop("_id"))
+            return Project(**res)
+        return None
+
+    async def get_projects_by_user(self, user_id: str) -> List[Project]:
+        # Find projects where user is owner OR in members
+        filter = {
+            "$or": [
+                {"owner_id": user_id},
+                {"members": user_id}
+            ],
+            "is_deleted": False
+        }
+        cursor = self.collection.find(filter).sort("created_at", -1)
+        projects = []
+        async for doc in cursor:
+            doc["id"] = str(doc.pop("_id"))
+            projects.append(Project(**doc))
+        return projects
+
+    async def add_member(self, project_id: str, user_id: str) -> bool:
+        res = await self.collection.update_one(
+            {"_id": ObjectId(project_id)},
+            {"$addToSet": {"members": user_id}}
+        )
+        return res.modified_count > 0
+
+    async def remove_member(self, project_id: str, user_id: str) -> bool:
+        res = await self.collection.update_one(
+            {"_id": ObjectId(project_id)},
+            {"$pull": {"members": user_id}}
+        )
+        return res.modified_count > 0
+
+    async def update_project(self, project_id: str, updates: dict) -> bool:
+        res = await self.collection.update_one(
+            {"_id": ObjectId(project_id)},
+            {"$set": updates}
+        )
+        return res.modified_count > 0
+    
+    async def delete_project(self, project_id: str) -> bool:
+        res = await self.collection.update_one({"_id": ObjectId(project_id)}, {"$set": {"is_deleted": True}})
+        return res.modified_count > 0