Method appendFile

web/input/input-state-container.react.js:785–890

(
    threadInfo: ThreadInfo,
    file: File,
    selectTime: number,
  )

  }

  async appendFile(
    threadInfo: ThreadInfo,
    file: File,
    selectTime: number,
  ): Promise<{
    steps: $ReadOnlyArray<MediaMissionStep>,
    result:
      | MediaMissionFailure
      | { success: true, pendingUpload: PendingMultimediaUpload },
  }> {
    const steps: MediaMissionStep[] = [
      {
        step: 'web_selection',
        filename: file.name,
        size: file.size,
        mime: file.type,
        selectTime,
      },
    ];

    let response;
    const validationStart = Date.now();
    try {
      response = await validateFile(file);
    } catch (e) {
      return {
        steps,
        result: {
          success: false,
          reason: 'processing_exception',
          time: Date.now() - validationStart,
          exceptionMessage: getMessageForException(e),
        },
      };
    }
    const { steps: validationSteps, result } = response;
    steps.push(...validationSteps);
    if (!result.success) {
      return { steps, result };
    }
    const { uri, file: fixedFile, mediaType, dimensions } = result;

    const supportsEncryptedMultimedia =
      threadSpecs[threadInfo.type].protocol().supportsEncryptedMultimedia;

    let encryptionResult;
    if (supportsEncryptedMultimedia) {
      let encryptionResponse;
      const encryptionStart = Date.now();
      try {
        encryptionResponse = await encryptFile(fixedFile);
      } catch (e) {
        return {
          steps,
          result: {
            success: false,
            reason: 'encryption_exception',
            time: Date.now() - encryptionStart,