Edit of links and database versioning

backend/app/api/links.py

@@ -1,7 +1,7 @@
 from fastapi import APIRouter, Header, HTTPException, status
 from pydantic import BaseModel
 
-from backend.app.services.link_service import create_link, list_public_links
+from backend.app.services.link_service import create_link, list_public_links, update_link
 from backend.app.services.plugin_manager import plugin_manager
 from backend.app.services.token_service import validate_token
 
@@ -15,6 +15,12 @@ class LinkCreate(BaseModel):
     timestamp: str | None = None
 
 
+class LinkUpdate(BaseModel):
+    title: str
+    url: str
+    comment: str = ''
+
+
 @router.post('/links', status_code=status.HTTP_201_CREATED)
 def create_link_endpoint(payload: LinkCreate, authorization: str | None = Header(default=None)):
     if not authorization or not authorization.startswith('Bearer '):
@@ -29,6 +35,24 @@ def create_link_endpoint(payload: LinkCreate, authorization: str | None = Header
     return record
 
 
+@router.put('/links/{link_id}')
+def update_link_endpoint(
+    link_id: str,
+    payload: LinkUpdate,
+    authorization: str | None = Header(default=None),
+):
+    if not authorization or not authorization.startswith('Bearer '):
+        raise HTTPException(status_code=401, detail='Missing or invalid Authorization header')
+    info = validate_token(authorization.replace('Bearer ', '', 1))
+    if info is None:
+        raise HTTPException(status_code=401, detail='Token expired or invalid')
+
+    record = update_link(link_id, info['user_id'], payload.title, payload.url, payload.comment)
+    if record is None:
+        raise HTTPException(status_code=404, detail='Link not found or not owned by user')
+    return record
+
+
 @router.get('/links')
 def list_links():
     return list_public_links()

backend/app/api/public.py

@@ -1,8 +1,11 @@
-from fastapi import APIRouter
+from fastapi import APIRouter, Depends
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
 
 from backend.app.services.link_service import list_public_links, list_public_users
+from backend.app.services.token_service import validate_token
 
 router = APIRouter()
+optional_bearer = HTTPBearer(auto_error=False)
 
 
 @router.get('/users')
@@ -12,7 +15,15 @@ def public_users():
 
 @router.get('/feed')
 @router.get('/feed/{username}')
-def public_feed(username: str | None = None):
+def public_feed(
+    username: str | None = None,
+    credentials: HTTPAuthorizationCredentials | None = Depends(optional_bearer),
+):
+    current_user_id = None
+    if credentials:
+        token_data = validate_token(credentials.credentials)
+        if token_data:
+            current_user_id = token_data['user_id']
     items = list_public_links(username)
     return [
         {
@@ -25,6 +36,8 @@ def public_feed(username: str | None = None):
                 'avatar_url': item['avatar_url'],
                 'bio': item['bio'],
             },
+            'is_owner': item['user_id'] == current_user_id,
+            'can_edit': item['user_id'] == current_user_id,
             'created_at': item['created_at'],
         }
         for item in items