react-static/examples/firebase-auth/src/components/SignInForm.js

A progressive static site generator for React

import React, { Component } from 'react'
import { withRouter } from 'react-static'

import { auth } from '../firebase'

const updateByPropertyName = (propertyName, value) => () => ({
  [propertyName]: value,
})

const INITIAL_STATE = {
  email: '',
  password: '',
  error: null,
}

class SignInForm extends Component {
  constructor (props) {
    super(props)

    this.state = { ...INITIAL_STATE }
  }

  onSubmit = event => {
    const { email, password } = this.state
    const { history } = this.props

    auth.doSignInWithEmailAndPassword(email, password)
      .then(() => {
        this.setState(() => ({ ...INITIAL_STATE }))
        history.push('/dashboard')
      })
      .catch(error => {
        this.setState(updateByPropertyName('error', error))
      })

    event.preventDefault()
  }

  render () {
    const { email, password, error } = this.state
    const isInvalid = password === '' || email === ''

    return (
      <form onSubmit={this.onSubmit}>
        <input
          value={email}
          onChange={event => this.setState(updateByPropertyName('email', event.target.value))}
          type="text"
          placeholder="Email Address"
        />
        <input
          value={password}
          onChange={event => this.setState(updateByPropertyName('password', event.target.value))}
          type="password"
          placeholder="password"
        />
        <button disabled={isInvalid} type="submit">
        Sign In
        </button>
        { error && <p>{error.message}</p> }
      </form>
    )
  }
}

export default withRouter(SignInForm)