Future calculateCumulativeStatus()

in app_dart/lib/src/service/build_status_provider.dart [58:102]
31 lines of code
13 McCabe index (conditional complexity)

  Future<BuildStatus?> calculateCumulativeStatus(RepositorySlug slug) async {
    final List<CommitStatus> statuses = await retrieveCommitStatus(
      limit: numberOfCommitsToReferenceForTreeStatus,
      slug: slug,
    ).toList();
    if (statuses.isEmpty) {
      return BuildStatus.failure();
    }

    final Map<String, bool> tasksInProgress = _findTasksRelevantToLatestStatus(statuses);
    if (tasksInProgress.isEmpty) {
      return BuildStatus.failure();
    }

    final List<String> failedTasks = <String>[];
    for (CommitStatus status in statuses) {
      for (Stage stage in status.stages) {
        for (Task task in stage.tasks) {
          /// If a task [isRelevantToLatestStatus] but has not run yet, we look
          /// for a previous run of the task from the previous commit.
          final bool isRelevantToLatestStatus = tasksInProgress.containsKey(task.name);

          /// Tasks that are not relevant to the latest status will have a
          /// null value in the map.
          final bool taskInProgress = tasksInProgress[task.name] ?? true;

          if (isRelevantToLatestStatus && taskInProgress) {
            if (task.isFlaky! || _isSuccessful(task)) {
              /// This task no longer needs to be checked to see if it causing
              /// the build status to fail.
              tasksInProgress[task.name!] = false;
            } else if (_isFailed(task) || _isRerunning(task)) {
              failedTasks.add(task.name!);

              /// This task no longer needs to be checked to see if its causing
              /// the build status to fail since its been
              /// added to the failedTasks list.
              tasksInProgress[task.name!] = false;
            }
          }
        }
      }
    }
    return failedTasks.isNotEmpty ? BuildStatus.failure(failedTasks) : BuildStatus.success();
  }