caremyway-client/src/components/Auth/Login.jsx

import React, { Component } from "react";
import { connect } from "react-redux";
import { Link, Redirect } from "react-router-dom";
import { Button, Container, Form, Header, Message } from "semantic-ui-react";

import {
  clearAuthRequestError,
  clearAuthRequestSuccess,
  setFormEmail,
  setFormPassword
} from "../../actions/auth/reducer.actions";
import { sendLoginRequest } from "../../actions/auth/saga.actions";
import Error from "../Shared/Error";

class Login extends Component {
  componentWillMount() {
    this.props.dispatch(clearAuthRequestError());
    this.props.dispatch(clearAuthRequestSuccess());
  }

  changeEmail = event => {
    this.props.dispatch(setFormEmail(event.target.value));
  };

  changePassword = event => {
    this.props.dispatch(setFormPassword(event.target.value));
  };

  onSubmitLogin = event => {
    event.preventDefault();
    const { dispatch, email, password } = this.props;
    dispatch(sendLoginRequest({ email, password }));
  };

  render() {
    const {
      isSendingAuthRequest,
      authRequestError,
      authRequestSuccess,
      email,
      password,
      userToken
    } = this.props;
    if (userToken) return <Redirect to={"/user/profile"} />;
    return (
      <LoginView
        isSendingAuthRequest={isSendingAuthRequest}
        authRequestError={authRequestError}
        authRequestSuccess={authRequestSuccess}
        email={email}
        password={password}
        changeEmail={this.changeEmail}
        changePassword={this.changePassword}
        onSubmitLogin={this.onSubmitLogin}
      />
    );
  }
}

function mapStateToProps(state) {
  return { ...state.auth };
}

const LoginView = ({
  isSendingAuthRequest,
  authRequestError,
  authRequestSuccess,
  email,
  password,
  changeEmail,
  changePassword,
  onSubmitLogin
}) => (
  <Container>
    <Header>Login</Header>
    <Form
      loading={isSendingAuthRequest}
      onSubmit={onSubmitLogin}
      error={!!authRequestError}
      success={!!authRequestSuccess}
    >
      <Form.Field>
        <label>Email</label>
        <input
          placeholder="bob@gmail.com"
          type="email"
          value={email}
          onChange={changeEmail}
        />
      </Form.Field>
      <Form.Field>
        <label>Password</label>
        <input
          placeholder="••••••••"
          type="password"
          value={password}
          onChange={changePassword}
        />
      </Form.Field>
      <Error header="Login failed!" error={authRequestError} />
      <Message success>
        <Message.Header>Login successful!</Message.Header>
        <p>Redirecting you now...</p>
      </Message>
      <Button.Group>
        <Button type="submit" primary>Login</Button>
        <Button as={Link} to="/auth/forgot-password" secondary>
          Forgot Password
        </Button>
      </Button.Group>
    </Form>
  </Container>
);

export default connect(mapStateToProps)(Login);