TopicProgress.proto

message TopicProgressDatabase {
  // Map from topic ID to TopicProgress.
  map<string, TopicProgress> topic_progress = 1;
}

message TopicProgress {
  // Map from story ID to StoryProgress.
  map<string, StoryProgress> story_progress = 1;
}

message StoryProgress {
  // Map from exploration ID to ChapterPlayState.
  map<string, ChapterPlayState> chapter_progress = 1;
}