Polish upload drafts, restore availability and offline API docs

pigway_frame_flow/api/app.py

@@ -243,7 +243,7 @@ def create_app(settings=None, start_worker=True):
         dependencies=[Depends(require("devices:read"))],
     )
     def devices():
-        return [d.device() for d in registry.drivers.values()]
+        return [device(id) for id in registry.drivers]
 
     @app.get(
         "/api/v1/devices/{device_id}",
@@ -252,7 +252,16 @@ def create_app(settings=None, start_worker=True):
         dependencies=[Depends(require("devices:read"))],
     )
     def device(device_id: str, refresh: bool = False):
-        return registry.get(device_id).device(refresh)
+        d = registry.get(device_id).device(refresh)
+        state = db.one("SELECT * FROM device_state WHERE device_id=?", (device_id,))
+        possible = bool(
+            state
+            and (
+                state["previous_image_id"] is not None
+                or state["base_image_id"] is not None
+            )
+        ) and not service.blocked(device_id)
+        return d.model_copy(update={"can_restore": possible})
 
     @app.get(
         "/api/v1/devices/{device_id}/images",
@@ -432,6 +441,7 @@ def create_app(settings=None, start_worker=True):
         asset = assets.put(
             await run_in_threadpool(convert, data, fit, profile),
             settings.sanitize(name),
+            kind="cache",
         )
         return asset
 
@@ -445,7 +455,8 @@ def create_app(settings=None, start_worker=True):
         return [
             assets.info(r["id"])
             for r in db.all(
-                "SELECT id FROM assets ORDER BY created_at DESC LIMIT ?", (limit,)
+                "SELECT id FROM assets WHERE kind!='cache' ORDER BY created_at DESC LIMIT ?",
+                (limit,),
             )
         ]