Move caption and altText state into video reducer

src/view/com/composer/Composer.tsx

@@ -184,9 +184,6 @@ export const ComposePost = ({
     initQuote,
   )
 
-  const [videoAltText, setVideoAltText] = useState('')
-  const [captions, setCaptions] = useState<{lang: string; file: File}[]>([])
-
   // TODO: Move more state here.
   const [composerState, dispatch] = useReducer(
     composerReducer,
@@ -437,8 +434,8 @@ export const ComposePost = ({
               videoState.status === 'done'
                 ? {
                     blobRef: videoState.pendingPublish.blobRef,
-                    altText: videoAltText,
-                    captions: captions,
+                    altText: videoState.altText,
+                    captions: videoState.captions,
                     aspectRatio: {
                       width: videoState.asset.width,
                       height: videoState.asset.height,
@@ -522,7 +519,6 @@ export const ComposePost = ({
     [
       _,
       agent,
-      captions,
       composerState,
       extLink,
       images,
@@ -541,10 +537,11 @@ export const ComposePost = ({
       setExtLink,
       setLangPrefs,
       threadgateAllowUISettings,
-      videoAltText,
       videoState.asset,
       videoState.pendingPublish,
       videoState.status,
+      videoState.altText,
+      videoState.captions,
     ],
   )
 
@@ -811,10 +808,28 @@ export const ComposePost = ({
                     />
                   ) : null)}
                 <SubtitleDialogBtn
-                  defaultAltText={videoAltText}
-                  saveAltText={setVideoAltText}
-                  captions={captions}
-                  setCaptions={setCaptions}
+                  defaultAltText={videoState.altText}
+                  saveAltText={altText =>
+                    dispatch({
+                      type: 'embed_update_video',
+                      videoAction: {
+                        type: 'update_alt_text',
+                        altText,
+                        signal: videoState.abortController.signal,
+                      },
+                    })
+                  }
+                  captions={videoState.captions}
+                  setCaptions={updater => {
+                    dispatch({
+                      type: 'embed_update_video',
+                      videoAction: {
+                        type: 'update_captions',
+                        updater,
+                        signal: videoState.abortController.signal,
+                      },
+                    })
+                  }}
                 />
               </Animated.View>
             )}

src/view/com/composer/state/video.ts

@@ -4,8 +4,6 @@ import {JobStatus} from '@atproto/api/dist/client/types/app/bsky/video/defs'
 import {I18n} from '@lingui/core'
 import {msg} from '@lingui/macro'
 
-import {createVideoAgent} from '#/lib/media/video/util'
-import {uploadVideo} from '#/lib/media/video/upload'
 import {AbortError} from '#/lib/async/cancelable'
 import {compressVideo} from '#/lib/media/video/compress'
 import {
@@ -14,8 +12,12 @@ import {
   VideoTooLargeError,
 } from '#/lib/media/video/errors'
 import {CompressedVideo} from '#/lib/media/video/types'
+import {uploadVideo} from '#/lib/media/video/upload'
+import {createVideoAgent} from '#/lib/media/video/util'
 import {logger} from '#/logger'
 
+type CaptionsTrack = {lang: string; file: File}
+
 export type VideoAction =
   | {
       type: 'compressing_to_uploading'
@@ -40,6 +42,16 @@ export type VideoAction =
       height: number
       signal: AbortSignal
     }
+  | {
+      type: 'update_alt_text'
+      altText: string
+      signal: AbortSignal
+    }
+  | {
+      type: 'update_captions'
+      updater: (prev: CaptionsTrack[]) => CaptionsTrack[]
+      signal: AbortSignal
+    }
   | {
       type: 'update_job_status'
       jobStatus: AppBskyVideoDefs.JobStatus
@@ -57,6 +69,8 @@ export const NO_VIDEO = Object.freeze({
   video: undefined,
   jobId: undefined,
   pendingPublish: undefined,
+  altText: '',
+  captions: [],
 })
 
 export type NoVideoState = typeof NO_VIDEO
@@ -70,6 +84,8 @@ type ErrorState = {
   jobId: string | null
   error: string
   pendingPublish?: undefined
+  altText: string
+  captions: CaptionsTrack[]
 }
 
 type CompressingState = {
@@ -80,6 +96,8 @@ type CompressingState = {
   video?: undefined
   jobId?: undefined
   pendingPublish?: undefined
+  altText: string
+  captions: CaptionsTrack[]
 }
 
 type UploadingState = {
@@ -90,6 +108,8 @@ type UploadingState = {
   video: CompressedVideo
   jobId?: undefined
   pendingPublish?: undefined
+  altText: string
+  captions: CaptionsTrack[]
 }
 
 type ProcessingState = {
@@ -101,6 +121,8 @@ type ProcessingState = {
   jobId: string
   jobStatus: AppBskyVideoDefs.JobStatus | null
   pendingPublish?: undefined
+  altText: string
+  captions: CaptionsTrack[]
 }
 
 type DoneState = {
@@ -111,6 +133,8 @@ type DoneState = {
   video: CompressedVideo
   jobId?: undefined
   pendingPublish: {blobRef: BlobRef; mutableProcessed: boolean}
+  altText: string
+  captions: CaptionsTrack[]
 }
 
 export type VideoState =
@@ -129,6 +153,8 @@ export function createVideoState(
     progress: 0,
     abortController,
     asset,
+    altText: '',
+    captions: [],
   }
 }
 
@@ -149,6 +175,8 @@ export function videoReducer(
       asset: state.asset ?? null,
       video: state.video ?? null,
       jobId: state.jobId ?? null,
+      altText: state.altText,
+      captions: state.captions,
     }
   } else if (action.type === 'update_progress') {
     if (state.status === 'compressing' || state.status === 'uploading') {
@@ -164,6 +192,16 @@ export function videoReducer(
         asset: {...state.asset, width: action.width, height: action.height},
       }
     }
+  } else if (action.type === 'update_alt_text') {
+    return {
+      ...state,
+      altText: action.altText,
+    }
+  } else if (action.type === 'update_captions') {
+    return {
+      ...state,
+      captions: action.updater(state.captions),
+    }
   } else if (action.type === 'compressing_to_uploading') {
     if (state.status === 'compressing') {
       return {
@@ -172,6 +210,8 @@ export function videoReducer(
         abortController: state.abortController,
         asset: state.asset,
         video: action.video,
+        altText: state.altText,
+        captions: state.captions,
       }
     }
     return state
@@ -185,6 +225,8 @@ export function videoReducer(
         video: state.video,
         jobId: action.jobId,
         jobStatus: null,
+        altText: state.altText,
+        captions: state.captions,
       }
     }
   } else if (action.type === 'update_job_status') {
@@ -210,6 +252,8 @@ export function videoReducer(
           blobRef: action.blobRef,
           mutableProcessed: false,
         },
+        altText: state.altText,
+        captions: state.captions,
       }
     }
   }

src/view/com/composer/videos/SubtitleDialog.tsx

@@ -22,13 +22,13 @@ import {SubtitleFilePicker} from './SubtitleFilePicker'
 
 const MAX_NUM_CAPTIONS = 1
 
+type CaptionsTrack = {lang: string; file: File}
+
 interface Props {
   defaultAltText: string
-  captions: {lang: string; file: File}[]
+  captions: CaptionsTrack[]
   saveAltText: (altText: string) => void
-  setCaptions: React.Dispatch<
-    React.SetStateAction<{lang: string; file: File}[]>
-  >
+  setCaptions: (updater: (prev: CaptionsTrack[]) => CaptionsTrack[]) => void
 }
 
 export function SubtitleDialogBtn(props: Props) {
@@ -198,9 +198,7 @@ function SubtitleFileRow({
   language: string
   file: File
   otherLanguages: {code2: string; code3: string; name: string}[]
-  setCaptions: React.Dispatch<
-    React.SetStateAction<{lang: string; file: File}[]>
-  >
+  setCaptions: (updater: (prev: CaptionsTrack[]) => CaptionsTrack[]) => void
   style: StyleProp<ViewStyle>
 }) {
   const {_} = useLingui()