set config via feature flags (#6590)

In cloud environment, allow all the config values to be set by the
feature flag endpoint and be updated dynamically (on 30s poll). Retain
origianl behavior for OSS. On cloud, config changes shouldn't be changed
via redeploy and the promoted image should match the staging image.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6590-set-config-via-feature-flags-2a26d73d3650819f8084eb2695c51f22)
by [Unito](https://www.unito.io)

---------

Co-authored-by: DrJKL <DrJKL0424@gmail.com>

src/platform/remoteConfig/remoteConfig.ts

@@ -21,6 +21,15 @@ import type { RemoteConfig } from './types'
  */
 export const remoteConfig = ref<RemoteConfig>({})
 
+export function configValueOrDefault<K extends keyof RemoteConfig>(
+  remoteConfig: RemoteConfig,
+  key: K,
+  defaultValue: NonNullable<RemoteConfig[K]>
+): NonNullable<RemoteConfig[K]> {
+  const configValue = remoteConfig[key]
+  return configValue || defaultValue
+}
+
 /**
  * Loads remote configuration from the backend /api/features endpoint
  * and updates the reactive remoteConfig ref

src/platform/remoteConfig/types.ts

@@ -8,6 +8,17 @@ type ServerHealthAlert = {
   badge?: string
 }
 
+type FirebaseRuntimeConfig = {
+  apiKey: string
+  authDomain: string
+  databaseURL?: string
+  projectId: string
+  storageBucket: string
+  messagingSenderId: string
+  appId: string
+  measurementId?: string
+}
+
 /**
  * Remote configuration type
  * Configuration fetched from the server at runtime
@@ -16,4 +27,8 @@ export type RemoteConfig = {
   mixpanel_token?: string
   subscription_required?: boolean
   server_health_alert?: ServerHealthAlert
+  max_upload_size?: number
+  comfy_api_base_url?: string
+  comfy_platform_base_url?: string
+  firebase_config?: FirebaseRuntimeConfig
 }