Golang 微服务教程（六）

// shippy-ui/src/App.js
import React, { Component } from 'react';
import './App.css';
import CreateConsignment from './CreateConsignment';
import Authenticate from './Authenticate';

class App extends Component {

  state = {
    err: null,
    authenticated: false,
  }

  onAuth = (token) => {
    this.setState({
      authenticated: true,
    });
  }

  renderLogin = () => {
    return (
      <Authenticate onAuth={this.onAuth} />
    );
  }

  renderAuthenticated = () => {
    return (
      <CreateConsignment />
    );
  }

  getToken = () => {
    return localStorage.getItem('token') || false;
  }

  isAuthenticated = () => {
    return this.state.authenticated || this.getToken() || false;
  }

  render() {
    const authenticated = this.isAuthenticated();
    return (
      <div className="App">
        <div className="App-header">
          <h2>Shippy</h2>
        </div>
        <div className='App-intro container'>
          {(authenticated ? this.renderAuthenticated() : this.renderLogin())}
        </div>
      </div>
    );
  }
}

export default App;

// shippy-ui/src/Authenticate.js
import React from 'react';

class Authenticate extends React.Component {

  constructor(props) {
    super(props);
  }

  state = {
    authenticated: false,
    email: '',
    password: '',
    err: '',
  }

  login = () => {
    fetch(`http://localhost:8080/rpc`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        request: {
          email: this.state.email,
          password: this.state.password,
        },
        // 注意
        // 作者的把 Auth 认证作为了独立的项目
        // Auth 其实和 go.micro.srv.user 是一样的
        // 这里作者和译者的代码略有不同
        service: 'shippy.auth',
        method: 'Auth.Auth',
      }),
    })
    .then(res => res.json())
    .then(res => {
      this.props.onAuth(res.token);
      this.setState({
        token: res.token,
        authenticated: true,
      });
    })
    .catch(err => this.setState({ err, authenticated: false, }));
  }

  signup = () => {
    fetch(`http://localhost:8080/rpc`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        request: {
          email: this.state.email,
          password: this.state.password,
          name: this.state.name,
        },
        method: 'Auth.Create',
        service: 'shippy.auth',
      }),
    })
    .then((res) => res.json())
    .then((res) => {
      this.props.onAuth(res.token.token);
      this.setState({
        token: res.token.token,
        authenticated: true,
      });
      localStorage.setItem('token', res.token.token);
    })
    .catch(err => this.setState({ err, authenticated: false, }));
  }

  setEmail = e => {
    this.setState({
      email: e.target.value,
    });
  }

  setPassword = e => {
    this.setState({
      password: e.target.value,
    });
  }

  setName = e => {
    this.setState({
      name: e.target.value,
    });
  }

  render() {
    return (
      <div className='Authenticate'>
        <div className='Login'>
          <div className='form-group'>
            <input
              type="email"
              onChange={this.setEmail}
              placeholder='E-Mail'
              className='form-control' />
          </div>
          <div className='form-group'>
            <input
              type="password"
              onChange={this.setPassword}
              placeholder='Password'
              className='form-control' />
          </div>
          <button className='btn btn-primary' onClick={this.login}>Login</button>
          <br /><br />
        </div>
        <div className='Sign-up'>
          <div className='form-group'>
            <input
              type='input'
              onChange={this.setName}
              placeholder='Name'
              className='form-control' />
          </div>
          <div className='form-group'>
            <input
              type='email'
              onChange={this.setEmail}
              placeholder='E-Mail'
              className='form-control' />
          </div>
          <div className='form-group'>
            <input
              type='password'
              onChange={this.setPassword}
              placeholder='Password'
              className='form-control' />
          </div>
          <button className='btn btn-primary' onClick={this.signup}>Sign-up</button>
        </div>
      </div>
    );
  }
}

export default Authenticate;

// shippy-ui/src/CreateConsignment.js
import React from 'react';
import _ from 'lodash';

class CreateConsignment extends React.Component {

  constructor(props) {
    super(props);
  }

  state = {
    created: false,
    description: '',
    weight: 0,
    containers: [],
    consignments: [],
  }

  componentWillMount() {
    fetch(`http://localhost:8080/rpc`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        service: 'shippy.consignment',
        method: 'ConsignmentService.Get',
        request: {},
      })
    })
    .then(req => req.json())
    .then((res) => {
      this.setState({
        consignments: res.consignments,
      });
    });
  }

  create = () => {
    const consignment = this.state;
    fetch(`http://localhost:8080/rpc`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        service: 'shippy.consignment',
        method: 'ConsignmentService.Create',
        request: _.omit(consignment, 'created', 'consignments'),
      }),
    })
    .then((res) => res.json())
    .then((res) => {
      this.setState({
        created: res.created,
        consignments: [...this.state.consignments, consignment],
      });
    });
  }

  addContainer = e => {
    this.setState({
      containers: [...this.state.containers, e.target.value],
    });
  }

  setDescription = e => {
    this.setState({
      description: e.target.value,
    });
  }

  setWeight = e => {
    this.setState({
      weight: Number(e.target.value),
    });
  }

  render() {
    const { consignments, } = this.state;
    return (
      <div className='consignment-screen'>
        <div className='consignment-form container'>
          <br />
          <div className='form-group'>
            <textarea onChange={this.setDescription} className='form-control' placeholder='Description'></textarea>
          </div>
          <div className='form-group'>
            <input onChange={this.setWeight} type='number' placeholder='Weight' className='form-control' />
          </div>
          <div className='form-control'>
            Add containers...
          </div>
          <br />
          <button onClick={this.create} className='btn btn-primary'>Create</button>
          <br />
          <hr />
        </div>
        {(consignments && consignments.length > 0
          ? <div className='consignment-list'>
              <h2>Consignments</h2>
              {consignments.map((item) => (
                <div>
                  <p>Vessel id: {item.vessel_id}</p>
                  <p>Consignment id: {item.id}</p>
                  <p>Description: {item.description}</p>
                  <p>Weight: {item.weight}</p>
                  <hr />
                </div>
              ))}
            </div>
          : false)}
      </div>
    );
  }
}

export default CreateConsignment;