feat: generate source-only watch thumbnails after photo uploads

pigway_frame_flow/display/service.py

@@ -205,7 +205,12 @@ class DisplayService:
             result.pop("preview_url", None)
             row = self.db.one("SELECT result FROM operations WHERE id=?", (id,))
             previous = json.loads(row["result"]) if row and row["result"] else {}
-            for key in ("photo_attempts", "upload_intent", "sync_observations"):
+            for key in (
+                "photo_attempts",
+                "upload_intent",
+                "sync_observations",
+                "wrist_thumbnail",
+            ):
                 if key in previous:
                     result = {**result, key: previous[key]}
         self.db.execute(
@@ -265,7 +270,13 @@ class DisplayService:
             )
 
     def content_asset(
-        self, content, device_id=None, operation_id=None, *, staging=False
+        self,
+        content,
+        device_id=None,
+        operation_id=None,
+        *,
+        staging=False,
+        source_image=None,
     ):
         if isinstance(content, AutoCollageContent):
             from pigway_frame_flow.extensions.auto_collage import prepare
@@ -419,6 +430,8 @@ class DisplayService:
                     ):
                         raise
                     continue
+                if source_image is not None:
+                    source_image["data"] = data
                 attempt["status"] = "PREPARED"
                 if operation_id:
                     self.db.execute(
@@ -625,15 +638,26 @@ class DisplayService:
 
             from pigway_frame_flow.models import Content
 
+            source_image: dict[str, bytes] = {}
             asset = self.content_asset(
-                TypeAdapter(Content).validate_python(payload), device_id, id
+                TypeAdapter(Content).validate_python(payload),
+                device_id,
+                id,
+                source_image=source_image,
             )
             self.assets.record_origin(asset["asset_id"], op)
             if action == "local-upload":
                 asset = self.assets.promote(asset["asset_id"])
-            self.update(
-                id, "COMPLETED", dict(asset_id=asset["asset_id"], url=asset["url"])
-            )
+            result = dict(asset_id=asset["asset_id"], url=asset["url"])
+            if action == "local-upload":
+                from pigway_frame_flow.display.wrist_thumbnail import publish
+
+                thumbnail = publish(
+                    self, device_id, asset["asset_id"], source_image.get("data")
+                )
+                if thumbnail:
+                    result["wrist_thumbnail"] = thumbnail
+            self.update(id, "COMPLETED", result)
             self.db.history(op, "COMPLETED")
             return
         device = driver.device(refresh=True)
@@ -757,6 +781,7 @@ class DisplayService:
         content = request.content
         self.update(id, "RENDERING")
         asset = None
+        source_image = {}
         if isinstance(content, ImageContent) and (
             content.image_id or content.image_name
         ):
@@ -769,7 +794,9 @@ class DisplayService:
                     )
                 image_id = matches[0].image_id
         else:
-            asset = self.content_asset(content, device_id, id, staging=True)
+            asset = self.content_asset(
+                content, device_id, id, staging=True, source_image=source_image
+            )
             self.assets.record_origin(asset["asset_id"], op)
             image_id = None
         self.db.execute(
@@ -803,6 +830,14 @@ class DisplayService:
         else:
             driver.display(image_id)
         result = {"image_id": image_id}
+        if asset:
+            from pigway_frame_flow.display.wrist_thumbnail import publish
+
+            thumbnail = publish(
+                self, device_id, asset["asset_id"], source_image.get("data")
+            )
+            if thumbnail:
+                result["wrist_thumbnail"] = thumbnail
         if asset:
             result["rendered_asset_id"] = asset["asset_id"]
             source = self.db.one(