如何处理链上事件

$> ls actions
  example.ts     # where we write Web3 actions code
  tsconfig.json
  package.json

{
    ...
    "compilerOptions": {
	...
+        "resolveJsonModule": true,
+        "esModuleInterop": true
    },
   ...
}

mv example.ts ticTacToeActions.ts

// ticTacToeActions.ts

export type Game = {
  players: { [address: string]: number };
  board: number[][];
};

export const createNewGame = (): Game => {
  return {
    players: {},
    board: [
      [0, 0, 0],
      [0, 0, 0],
      [0, 0, 0],
    ],
  };
};

// ticTacToeActions.ts continued
export const newGameAction: ActionFn = async (context: Context, event: Event) => {
  let txEvent = event as TransactionEvent;

  let iface = new ethers.utils.Interface(TicTacToe.abi);

  const result = iface.decodeEventLog('GameCreated', txEvent.logs[0].data, txEvent.logs[0].topics);

  const { gameId, playerNumber, player } = result;

  console.log('Game Created Event:', {
    gameId: gameId.toString(),
    playerNumber,
    player,
  });

  const game: Game = createNewGame();
  await context.storage.putJson(gameId.toString(), game);
};

account_id: ''
actions:
  YOUR_USERNAME/YOUR_PROJECT_SLUG:
    runtime: v1
    sources: actions
    specs:
      newGame:
        description: Respond to newGame event
        function: ticTacToeActions:newGameAction
        trigger:
          type: transaction
          transaction:
            status:
              - mined
            filters:
              - network: 3
                eventEmitted:
                  contract:
                    address: TTT_CONTRACT_ADDRESS
                  name: GameCreated
project_slug: ''

tenderly actions deploy

// playerJoinAction.ts

export const playerJoinedAction: ActionFn = async (context: Context, event: Event) => {
  let txEvent = event as TransactionEvent;
  let iface = new ethers.utils.Interface(TicTacToe.abi);
  const result = iface.decodeEventLog(
    'PlayerJoinedGame',
    txEvent.logs[0].data,
    txEvent.logs[0].topics,
  );

  const gameId = result.gameId.toString();
  const playerAddress = result.player.toLowerCase() as string;
  const playerNumber = result.playerNumber;

  console.log('Player joined event:', {
    gameId,
    playerAddress,
    playerNumber,
  });

  const game: Game = (await context.storage.getJson(gameId)) as Game;
  game.players[playerAddress] = playerNumber;

  await context.storage.putJson(result.gameId.toString(), game);
};

playerJoined:
  description: Respond to player joining game
  function: ticTacToeActions:playerJoinedAction
  trigger:
    type: transaction
    transaction:
      status:
        - mined
      filters:
        - network: 3
          eventEmitted:
            contract:
              address: TTT_CONTRACT_ADDRESS
            name: PlayerJoinedGame

tenderly action deploy

// ticTacToeActions.ts
//...
export const playerMadeMoveAction: ActionFn = async (context: Context, event: Event) => {
  let txEvent = event as TransactionEvent;
  let iface = new ethers.utils.Interface(TicTacToe.abi);
  const result = iface.decodeEventLog(
    'PlayerMadeMove',
    txEvent.logs[0].data,
    txEvent.logs[0].topics,
  );

  const gameId = result.gameId.toString();
  const game = (await context.storage.getJson(gameId)) as Game;
  const player = result.player.toLowerCase() as string;
  const { boardRow, boardCol } = result;

  console.log("Player's move event log:", {
    gameId,
    player,
    boardRow: boardRow.toString(),
    boardCol: boardCol.toString(),
  });

  console.log(
    `Move: gameId ${gameId}, game ${JSON.stringify(
      game,
    )}, boradRow ${boardRow}, boardCol ${boardCol}, player ${player}`,
  );

  game.board[boardRow][boardCol] = game.players[player];
  console.log('MV', JSON.stringify(game));
  await context.storage.putJson(gameId, game);

  processNewGameState(game);
};

const processNewGameState = (game: Game) => {
  let board = '\n';
  game.board.forEach(row => {
    row.forEach(field => {
      if (field == 1) {
        board += '❎ ';
        return;
      }

      if (field == 2) {
        board += '🅾️ ';
        return;
      }

      board += '💜 ';
    });

    board += '\n';
  });

  console.log(board);
};

playerMadeMove:
  description: Respond to player making a move event
  function: ticTacToeActions:playerMadeMoveAction
  trigger:
    type: transaction
    transaction:
      status:
        - mined
      filters:
        - network: 3
          eventEmitted:
            contract:
              address: TTT_CONTRACT_ADDRESS
            name: PlayerMadeMove

export const gameOverAction: ActionFn = async (context: Context, event: Event) => {
	let txEvent = event as TransactionEvent;
	let iface = new ethers.utils.Interface(TicTacToe.abi);

	const gameOverTopic = iface.getEventTopic("GameOver");
	const gameOverLog = txEvent.logs.find(log => log.topics.find(topic => topic == gameOverTopic) !== undefined);

	if (gameOverLog == undefined) {
		// impossible
		throw Error("GameOver log not found in event's logs");
	}

	const result = iface.decodeEventLog("GameOver", gameOverLog.data, gameOverLog.topics);

	console.log(result);

	const gameId = result.gameId.toString();
	const winner = result.winner as number;

	const winnerMessage = getWinnerMessage(winner);
	if (winnerMessage !== false) {
		console.info(`🎉 Winner of the game ${gameId} is ${winnerMessage}`);
	} else {
		console.error("🤔 weird winner code");
	}
}

gameOver:
  description: Respond to game over
  function: ticTacToeActions:gameOverAction
  trigger:
    type: transaction
    transaction:
      status:
        - mined
      filters:
        - network: 3
          eventEmitted:
            contract:
              address: TTT_CONTRACT_ADDRESS
            name: GameOver