!7

concept PostedLine {
  S globalID = aGlobalIDUnlessLoading();
  S channelID;
  S text;
  bool isImage;
  S context; // not null if post successful
  long posted; // timestamp - not 0 if post successful
}

cmodule GPostedLines > DynCRUD<PostedLine> {
  // API
  
  // returns ID of entry
  S postingLine(S channelID, S text) {
    ret nu PostedLine(+channelID, +text).globalID;
  }
  
  S postingImage(S channelID, S imageURL) {
    ret nu PostedLine(+channelID, text := imageURL, isImage := true).globalID;
  }
  
  void donePosting(S postID, S context) {
    cset(conceptWhere PostedLine(globalID := postID),
      posted := now(),
      +context);
  }
}