display backend-driven upload failure messages (#11329)

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

@@ -388,7 +388,11 @@ export async function processVideo(
       telemetry.processingFailed(e)
       dispatch({
         type: 'to_error',
-        error: getProcessingErrorMessage(status?.error, i18n),
+        error: getProcessingErrorMessage(
+          status?.failureCode,
+          status?.error,
+          i18n,
+        ),
         signal,
       })
       return // Exit async loop
@@ -421,7 +425,40 @@ export async function processVideo(
   }
 }
 
-function getProcessingErrorMessage(error: string | undefined, i18n: I18n) {
+function getProcessingErrorMessage(
+  failureCode: string | undefined,
+  error: string | undefined,
+  i18n: I18n,
+) {
+  const validationError = getValidationErrorMessage(error, i18n)
+  if (failureCode === 'validation_failure') {
+    return (
+      validationError ?? i18n._(msg`The selected video could not be processed.`)
+    )
+  }
+  // Support workers deployed before failureCode was added.
+  if (!failureCode && validationError) {
+    return validationError
+  }
+
+  switch (failureCode) {
+    case 'encoding_failure':
+      return i18n._(msg`The selected video could not be encoded.`)
+    case 'pds_upload_failure':
+      return i18n._(
+        msg`The video could not be uploaded to your PDS. Please try again.`,
+      )
+    case 'pds_upload_unsupported_blob_size':
+      return i18n._(
+        msg`Your PDS does not support videos this large. Please try again with a smaller file.`,
+      )
+    case 'generic_failure':
+    default:
+      return i18n._(msg`Video failed to process`)
+  }
+}
+
+function getValidationErrorMessage(error: string | undefined, i18n: I18n) {
   switch (error) {
     case 'video_too_long':
       return i18n._(msg`The selected video is too long.`)
@@ -429,8 +466,10 @@ function getProcessingErrorMessage(error: string | undefined, i18n: I18n) {
       return i18n._(msg`The selected video has an unsupported aspect ratio.`)
     case 'unsupported_codec':
       return i18n._(msg`The selected video uses an unsupported format.`)
-    default:
-      return i18n._(msg`Video failed to process`)
+    case 'encoded_video_too_large':
+      return i18n._(
+        msg`The processed video is too large. Please try again with a smaller file.`,
+      )
   }
 }