play with dex

Play with the dex

Please refer the client/transactions-api to see how to play with the dex chain. You can:

• issue the token

  await api.tx.tokenModule.issue(symbol, amount).signAndSend(account);

  You can also subscribe result and confirm status is finalized:

  api.tx.tokenModule.issue(symbol, amount).signAndSend(account, (result) => {
      if (result.status.isFinalized) {
          const record = result.findRecord("tokenModule", "Issued");
          const event = record.toJSON().event.data;
          console.log(event); // Issued(AccountId, Hash, Balance)
      }
  });

• transfer the token

  await api.tx.tokenModule.transfer(tokenHash, toAccountId, amount).signAndSend(account);

  You can also subscribe result and confirm status is finalized:

  api.tx.tokenModule.transfer(tokenHash, toAccountId, amount).signAndSend(account, (result) => {
      if (result.status.isFinalized) {
          const record = result.findRecord("tokenModule", "Transferd");
          const event = record.toJSON().event.data;
          console.log(event); // Transferd(AccountId, AccountId, Hash, Balance)
      }
  });

• create the trade pair

  await api.tx.tradeModule.createTradePair(baseTokenHash, quoteTokenHash).signAndSend(account);

  You can also subscribe result and confirm status is finalized:

  api.tx.tradeModule.createTradePair(baseTokenHash, quoteTokenHash).signAndSend(account, (result) => {
      if (result.status.isFinalized) {
          const record = result.findRecord("tokenModule", "TradePairCreated");
          const event = record.toJSON().event.data;
          console.log(event); // TradePairCreated(AccountId, Hash, TradePair)
      }
  });

• create the limit order

  await api.tx.tradeModule.createLimitOrder(baseTokenHash, quoteTokenHash, type, price * 10 ** 8, amount).signAndSend(account); // type: [buy: 0, sell: 1], if order is buy, amount = price * want_to_buy_amount

  You can also subscribe result and confirm status is finalized:

  api.tx.tradeModule.createLimitOrder(baseTokenHash, quoteTokenHash, type, price * 10 ** 8, amount).signAndSend(account, (result) => {
      if (result.status.isFinalized) {
          const record = result.findRecord("tokenModule", "OrderCreated"); // OrderCreated (accountId, baseTokenHash, quoteTokenHash, orderHash, LimitOrder)
          const record2 = result.findRecord("tradeModule", "TradeCreated"); // TradeCreated (accountId, baseTokenHash, quoteTokenHash, tradeHash, Trade)
  
          const event = record.toJSON().event.data;
          console.log(event);
          const event2 = record.toJSON().event.data; // if matched will received tradeCreated event
      }
  });

• cancel the limit order

  await api.tx.tradeModule.cancelLimitOrder(orderHash).signAndSend(account);

  You can also subscribe result and confirm status is finalized:

  api.tx.tradeModule.cancelLimitOrder(orderHash).signAndSend(account, (result) => {
      if (result.status.isFinalized) {
          const record = result.findRecord("tokenModule", "OrderCanceled");
          const event = record.toJSON().event.data;
          console.log(event); // OrderCanceled(accountId, orderHash)
      }
  });

Also, you can play with it by polkadotjs wallet frontend with:

git clone https://github.com/polkadot-js/apps
cd apps
yarn
yarn start

Then open the link http://localhost:3000/#/?rpc=ws://127.0.0.1:9944