基于区块链柚子(EOS)钱包前端插件 scatter开发

基于区块链柚子(EOS)钱包前端插件 scatter

安装和使用

npm i scatterjs-core scatterjs-plugin-eosjs eosjs -D

//main.js
import ScatterJS from "scatterjs-core";
import ScatterEOS from "scatterjs-plugin-eosjs";
import Eos from "eosjs";
ScatterJS.plugins(new ScatterEOS());

网络链

// EOS公链(正式环境)
let main = {
  protocol: "https",
  blockchain: "eos",
  host: "nodes.get-scatter.com",
  port: 443,
  chainId: "aca376f206b8fc25a6ed44dbdc66547c36c6c33e3a119ffbeaef943642f0e906",
};

// 测试链 (就是用来测试的)
let jungle2 = {
  protocol: "http",
  blockchain: "eos",
  host: "jungle2.cryptolions.io",
  port: 80,
  chainId: "e70aaab8997e1dfce58fbfac80cbbb8fecec7b99cf982a9444273cbc64c41473",
};

调试和配置

翻墙下载 scatter 插件安装.

1. 打开 scatter ---setting--network---新建 把 jungle2 的信息填到对应的位置,(取名随便取,jungle2) --保存
2. 生成秘钥对,一键生成私钥和公钥
3. 新建测试账号,需要填入刚才的公钥,账号名是 z-a,1-5 长度 12 位组合
4. 充值,账号建立成功之后莫有钱, 可以先充值 100 块.测试的时候省着点用
5. 测试链上的账号建好之后,打开 scatter---身份---新建,选择刚才建立的 network => jungle2,然后选择对应的账号. 点导入---保存

这样 scatter 插件配置完毕.可以愉快的开发了.

创建 scatter

ScatterJS.scatter.connect("app").then((connected) => {
  if (!connected) return false;
  let scatter = ScatterJS.scatter; //这里就是
  window.ScatterJS = null;
  window.scatter = null;
  //通过两种方式拿到eos 对象
  // this.eos = Eos({ httpEndpoint: '', signatureProvider: ScatterJS.scatter.eosHook(jungle2) });
  this.eos = scatter.eos(jungle2, Eos, { expireInSeconds: 60 });
  //如果授权成功,则可以拿到用户相关信息
  if (scatter.identity) {
    this.account = scatter.identity.accounts.find(
      (x) => x.blockchain === "eos"
    );
  }
});

授权和取消授权

//授权
const requiredFields = { accounts: [jungle2] };

scatter
  .getIdentity(requiredFields)
  .then(() => {
    //分别拿到用户信息 和 eos 对象
    this.account = scatter.identity.accounts.find(
      (x) => x.blockchain === "eos"
    );
    this.eos = scatter.eos(jungle2, Eos, { expireInSeconds: 60 }, "https");
  })
  .catch((res) => {});

//退出
scatter.forgetIdentity().then((id) => {
  this.account = null;
  this.eos = null;
});

转账交易部分

//取币种相关信息
let config = {
  account: "xxx", //账号名称
  code: "eosio.token", //合约名称
  symbol: "ETH", //币种
};
eos.getCurrencyBalance(config).then((e) => {
  console.log(e);
});

//取用户相关信息
eos.getAccount({ account_name: "xxx" }).then((res) => {
  // console.log(res)
  let totoal = res.core_liquid_balance; //余额
  let cpu = res.cpu_limit; //CPU
  let net = res.net_limit; //NET
});

//发起转账
// eos.transfer('发送方帐号', '接收方帐号', '0.3000 DEV','memo', options, callback)

eos
  .transfer(account.name, user, `${coin} EOS`, memo, transactionOptions)
  .then((trx) => {
    // That's it!
    console.log(`Transaction ID: ${trx.transaction_id}`);
    //有transaction_id 就代表转账成功了
  })
  .catch((res) => {});

//还可以使用对象
eos.transfer({
  from: "发送方帐号",
  to: "接收方帐号",
  quantity: "0.1000 DEV",
  memo: "备注",
  callback,
});

交互部分

// 获取Table行数据
eosjs.getTableRows({"scope":'合约名字', "code":'合约名字', "table":"game", "json": true},callback)

//执行合约上的函数

eos.contract("合约名字").then(actions => {       //actions随便起的变量名
    actions.test('hello', {                     //test是方法名, 'hello'是该actions合约test方法的参数
        authorization: [{actor:'lilei'}]           //lilei是建立该合约的用户
    }).then(result => {
        console.log(result);
    });

当然 EOS 的 API 非常多,但是对于前端而言,以上足够开发一个线上赌博游戏了.

至于说发代币啊,部署合约, 抵押,竞拍 ,出售 ,购买,新建帐号 这些都用不着, 可以转给后端.

[完]?