day3.did

type Content = variant {
  Text: text;
  Image: blob;
  Video: blob;
};

type Message = record {
  content: Content;
  creator: principal;
  vote: int;
};

type Result = variant {
  Ok;
  Err: text;
};

type ResultMessage = variant {
  Ok: Message;
  Err: text;
};

service : {
  writeMessage: (Content) -> (nat);
  getMessage: (nat) -> (ResultMessage) query;
  updateMessage: (nat, Content) -> (Result);
  deleteMessage: (nat) -> (Result);
  upVote: (nat) -> (Result);
  downVote: (nat) -> (Result);
  getAllMessages: () -> (vec Message) query;
  getAllMessagesRanked: () -> (vec Message) query;
};