from __future__ import annotations

# P0 transitional router module.
# Route functions remain behavior-compatible while ui_server.py becomes
# an application assembly layer. Runtime dependencies are injected once
# during registration to avoid circular imports.

def _inject(context):
    globals().update(context)

async def get_synced_favorites(request: Request):
    supplied_uid = str(request.query_params.get("user_id") or "").strip()
    uid, auth_user = await resolve_request_user(request, supplied_uid)
    if not valid_user_id(uid):
        raise HTTPException(400, "invalid user_id")
    return {
        "favorites": _read_server_favorites(uid),
        "sync_enabled": bool(auth_user),
        "storage_mode": _favorites_storage_mode(),
        "user_id": uid,
    }


async def put_synced_favorites(body: FavoritesSyncRequest, request: Request):
    uid, auth_user = await resolve_request_user(request, body.user_id)
    if not valid_user_id(uid):
        raise HTTPException(400, "invalid user_id")
    if AUTH_ENABLED and not auth_user:
        raise HTTPException(401, "Authentication required")
    items = _write_server_favorites(uid, body.favorites)
    return {
        "favorites": items,
        "sync_enabled": bool(auth_user),
        "storage_mode": _favorites_storage_mode(),
        "count": len(items),
    }


async def get_synced_workspace(request: Request):
    supplied_uid=str(request.query_params.get("user_id") or "").strip()
    uid,auth_user=await resolve_request_user(request,supplied_uid)
    if AUTH_ENABLED and not auth_user: raise HTTPException(401,"Authentication required")
    data=_read_server_workspace(uid)
    return {**data,"sync_enabled":bool(auth_user),"storage_mode":_favorites_storage_mode(),"user_id":uid}


async def put_synced_workspace(body: WorkspaceSyncRequest, request: Request):
    uid,auth_user=await resolve_request_user(request,body.user_id)
    if AUTH_ENABLED and not auth_user: raise HTTPException(401,"Authentication required")
    data=_write_server_workspace(uid,body.sessions,body.settings)
    return {**data,"sync_enabled":bool(auth_user),"storage_mode":_favorites_storage_mode(),"user_id":uid}


def register_user_state_routes(app, context):
    _inject(context)
    app.add_api_route("/api/sidebar/favorites", get_synced_favorites, methods=["GET"])
    app.add_api_route("/api/sidebar/favorites", put_synced_favorites, methods=["PUT"])
    app.add_api_route("/api/sidebar/workspace", get_synced_workspace, methods=["GET"])
    app.add_api_route("/api/sidebar/workspace", put_synced_workspace, methods=["PUT"])