Persist last scene

backend/app/models/frame.py

@@ -122,7 +122,7 @@ def new_frame(name: str, frame_host: str, server_host: str, device: Optional[str
         rotate=0,
         background_color="#ffffff",
         device=device or "web_only",
-        log_to_file=None, # save the SSD by default
+        log_to_file=None, # spare the SD card from load
     )
     db.session.add(frame)
     db.session.commit()

e2e/generated/scenes.nim

@@ -1,7 +1,7 @@
 # This file is autogenerated
 
 import frameos/types
-import tables
+import tables, options
 import scenes/scene_color as scene_color
 import scenes/scene_gradient as scene_gradient
 import scenes/scene_ifElse as scene_ifElse
@@ -11,7 +11,7 @@ import scenes/scene_qr as scene_qr
 import scenes/scene_split as scene_split
 import scenes/scene_text as scene_text
 
-let defaultSceneId* = "color".SceneId
+let defaultSceneId* = some("color".SceneId)
 
 const sceneOptions* = [
   ("color".SceneId, "Test Color"),

e2e/state/.gitignore

@@ -0,0 +1,2 @@
+# This changes too unpredictably in CI
+scene.json

frameos/src/frameos/runner.nim

@@ -31,6 +31,7 @@ var
   lastPublicStates {.guard: lastPublicStatesLock.} = %*{}
   lastPublicSceneId {.guard: lastPublicStatesLock.} = "".SceneId
   lastPersistedStates = %*{}
+  lastPersistedSceneId: Option[SceneId] = none(SceneId)
 
 proc setLastImage(image: Image) =
   withLock lastImageLock:
@@ -91,13 +92,25 @@ proc updateLastPersistedState*(self: FrameScene) =
   if hasChanges:
     writeFile(&"{SCENE_STATE_JSON_FOLDER}/scene-{sanitizePathString(self.id.string)}.json", $persistedState)
   self.lastPersistedStateUpdate = epochTime()
+  if lastPersistedSceneId.isNone() or lastPersistedSceneId.get() != self.id:
+    writeFile(&"{SCENE_STATE_JSON_FOLDER}/scene.json", $(%*{"sceneId": self.id.string}))
+    lastPersistedSceneId = some(self.id)
 
 proc loadPersistedState*(sceneId: SceneId): JsonNode =
   try:
     return parseJson(readFile(&"{SCENE_STATE_JSON_FOLDER}/scene-{sanitizePathString(sceneId.string)}.json"))
   except IOError:
     return %*{}
 
+proc loadLastScene*(): Option[SceneId] =
+  try:
+    let json = parseJson(readFile(&"{SCENE_STATE_JSON_FOLDER}/scene.json"))
+    if json.hasKey("sceneId"):
+      result = some(SceneId(json["sceneId"].getStr()))
+      lastPersistedSceneId = result
+  except IOError:
+    return none(SceneId)
+
 proc renderSceneImage*(self: RunnerThread, exportedScene: ExportedScene, scene: FrameScene): Image =
   let sceneTimer = epochTime()
   let requiredWidth = self.frameConfig.renderWidth()
@@ -301,12 +314,23 @@ proc startMessageLoop*(self: RunnerThread): Future[void] {.async.} =
         if waitTime < 200:
           waitTime += 5
 
+proc getFirstSceneId*(): SceneId =
+  if defaultSceneId.isSome():
+    return defaultSceneId.get()
+  let lastSceneId = loadLastScene()
+  if lastSceneId.isSome():
+    return lastSceneId.get()
+  if len(exportedScenes) > 0:
+    for key in keys(exportedScenes):
+      return key
+  return "".SceneId
+
 proc createRunnerThread*(args: (FrameConfig, Logger)) =
   {.cast(gcsafe).}:
     var runnerThread = RunnerThread(
       frameConfig: args[0],
       scenes: initTable[SceneId, FrameScene](),
-      currentSceneId: defaultSceneId,
+      currentSceneId: getFirstSceneId(),
       lastRenderAt: 0,
       sleepFuture: none(Future[void]),
       isRendering: false,

frameos/src/scenes/scenes.nim

@@ -1,16 +1,16 @@
 import default as defaultScene
 import frameos/types
-import tables
+import tables, options
 
-let defaultSceneId* = "default".SceneId
+let defaultSceneId* = some("default".SceneId)
 
 const sceneOptions* = [
   ("753d9439-8470-4834-8c5d-73264875c5b1".SceneId, "Default Scene"),
 ]
 
 proc getExportedScenes*(): Table[SceneId, ExportedScene] =
   result = initTable[SceneId, ExportedScene]()
-  result[defaultSceneId] = defaultScene.exportedScene
+  result["default".SceneId] = defaultScene.exportedScene
 
 # TODO Scene options:
 # - start at boot / start when requested

frontend/src/scenes/frame/panels/Scenes/SceneDropDown.tsx

@@ -26,7 +26,7 @@ export function SceneDropDown({ sceneId, context }: SceneDropDownProps) {
   const { frameId } = useValues(frameLogic)
   const { editScene, editSceneJSON } = useActions(panelsLogic)
   const { scenes } = useValues(scenesLogic({ frameId }))
-  const { toggleSettings, renameScene, duplicateScene, deleteScene, setAsDefault } = useActions(
+  const { toggleSettings, renameScene, duplicateScene, deleteScene, setAsDefault, removeDefault } = useActions(
     scenesLogic({ frameId })
   )
   const { saveAsTemplate, saveAsZip } = useActions(templatesLogic({ frameId }))
@@ -79,15 +79,18 @@ export function SceneDropDown({ sceneId, context }: SceneDropDownProps) {
           onClick: () => renameScene(scene.id),
           icon: <PencilSquareIcon className="w-5 h-5" />,
         },
-        ...(!scene.default
-          ? [
-              {
-                label: 'Set as default',
-                onClick: () => setAsDefault(scene.id),
-                icon: <FlagIcon className="w-5 h-5" />,
-              },
-            ]
-          : []),
+
+        scene.default
+          ? {
+              label: 'Remove "start on boot"',
+              onClick: () => removeDefault(),
+              icon: <FlagIcon className="w-5 h-5" />,
+            }
+          : {
+              label: 'Set to start on boot',
+              onClick: () => setAsDefault(scene.id),
+              icon: <FlagIcon className="w-5 h-5" />,
+            },
         {
           label: 'Delete scene',
           confirm: 'Are you sure you want to delete this scene?',

frontend/src/scenes/frame/panels/Scenes/Scenes.tsx

@@ -91,7 +91,7 @@ export function Scenes() {
                   </span>
                   {scene.default ? (
                     <Tag className="ml-2" color="primary">
-                      default
+                      start on boot
                     </Tag>
                   ) : null}
                   {scene?.settings?.refreshInterval && Number.isFinite(scene.settings.refreshInterval) ? (

frontend/src/scenes/frame/panels/Scenes/scenesLogic.tsx

@@ -26,6 +26,7 @@ export const scenesLogic = kea<scenesLogicType>([
   actions({
     toggleSettings: (sceneId: string) => ({ sceneId }),
     setAsDefault: (sceneId: string) => ({ sceneId }),
+    removeDefault: true,
     deleteScene: (sceneId: string) => ({ sceneId }),
     renameScene: (sceneId: string) => ({ sceneId }),
     duplicateScene: (sceneId: string) => ({ sceneId }),
@@ -87,6 +88,17 @@ export const scenesLogic = kea<scenesLogicType>([
         ),
       })
     },
+    removeDefault: () => {
+      frameLogic({ frameId: props.frameId }).actions.setFrameFormValues({
+        scenes: values.scenes.map((scene) => {
+          if ('default' in scene) {
+            const { default: _, ...rest } = scene
+            return rest
+          }
+          return scene
+        }),
+      })
+    },
     duplicateScene: ({ sceneId }) => {
       const scene = values.scenes.find((s) => s.id === sceneId)
       if (!scene) {