protocol.txt

T?: T | undefined
Timestamp: Number // UTC, ms since 1970
Id: Number // Integer IDs (not globally unique)
Username: String // /[a-z0-9]+/
Word: String /[a-z]+/
Clue: {id: Id, ts: Timestamp, active: Boolean, question: String, guesses: [Guess]}
Guess: {ts: Timestamp, status: GuessStatus, username: Username, word: String?} // Deleted id -- necessary?
GuessStatus: "active" | "withdrawn" | "defused" | "challenged" // withdrawn-then-defused -> defused
UserData: {username: Username, wordmaster: Boolean}
Message: {id: Id, ts: Timestamp, username: Username, text: String}
Game:
{ clues: [Clue],
  users: [UserData],
  you: UserData,
  active: Boolean,
  gameId: Id,
  word: {prefix: Word, fullWord: Word?, not: {Word}}
}
Request:
  {type: "snapshot"}
| {type: "say", text: String}
| {type: "reveal"} // wordmaster only
| {type: "not", word: Word}
| {type: "clue", clue: String, guess: Word}
| {type: "contact", clueId: Id, word: Word}
| {type: "withdraw", clueId: Id}
| {type: "challenge", clueId: Id}
| {type: "begin", word: Word}
| {type: "wordmaster"} // Become wordmaster
| {type: "choosewm"}
Response: // Every response includes ts: Timestamp
  {type: "error", error: String} // todo: maybe add refresh: Boolean?
| {type: "snapshot", snapshot: Snapshot} // Full snapshot.
| {type: "game", game: Game} // Just the game state.
| {type: "message", message: Message} // A single message.
Snapshot: {messages: [Message], game: Game}