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import React from 'react'
import { ActivityIndicator, Text, TouchableOpacity, View, Modal, WebView } from 'react-native'
import cheerio from 'cheerio'
import qs from 'qs'
import randomize from 'randomatic'
import Base64 from 'base-64'
import Meteor, { createContainer } from 'react-native-meteor'
import providerConfigs from '../provider-configs'
const styles = {
buttonContainer: { flexDirection: 'row', justifyContent: 'space-around' },
button: { flex: -1 },
buttonLogin: { backgroundColor: '#bbb'},
buttonLogout: { backgroundColor: '#bbb'},
buttonLoginText: { textAlign: 'center', paddingVertical: 12, paddingHorizontal: 40 },
buttonLogoutText: { textAlign: 'center', paddingVertical: 12, paddingHorizontal: 40 },
text: { textAlign: 'center', marginBottom: 15 },
view: { flex: 1, alignSelf: 'stretch', justifyContent: 'center' }
}
class Login extends React.Component {
static propTypes = {
provider: React.PropTypes.string.isRequired,
callbackUrl: React.PropTypes.string.isRequired,
meteorServerDomain: React.PropTypes.string.isRequired,
meteorServerProtocol: React.PropTypes.string.isRequired,
clientId: React.PropTypes.string.isRequired,
scope: React.PropTypes.string,
url: React.PropTypes.string,
extraRequestParams: React.PropTypes.string,
styles: React.PropTypes.object
}
static defaultProps = {
styles: {},
classNames: {}
}
state = {
stage: 'initial',
targetUrl: ''
}
constructor (props) {
super(props)
this.providerConfig = providerConfigs[this.props.provider] || {}
const propStyles = this.props.styles || {}
this.styles = {
buttonContainer: Object.assign({}, styles.buttonContainer, propStyles.buttonContainer),
buttonLogin: Object.assign({}, styles.button, styles.buttonLogin, this.providerConfig.styles.buttonLogin, propStyles.buttonLogin),
buttonLogout: Object.assign({}, styles.button, styles.buttonLogout, this.providerConfig.styles.buttonLogout, propStyles.buttonLogout),
buttonLoginText: Object.assign({}, styles.buttonLoginText, this.providerConfig.styles.buttonLoginText, propStyles.buttonLoginText),
buttonLogoutText: Object.assign({}, styles.buttonLogoutText, this.providerConfig.styles.buttonLogoutText, propStyles.buttonLogoutText),
text: Object.assign({}, styles.text, propStyles.text),
view: Object.assign({}, styles.view, propStyles.view),
}
}
login = () => {
const url = this.props.url || this.providerConfig.url
const randomToken = randomize('*', 10)
const state = stateParam('popup', randomToken, this.props.callbackUrl)
const queryString = qs.stringify(Object.assign({
client_id: this.props.clientId,
redirect_uri: this.props.callbackUrl,
scope: this.props.scope || this.providerConfig.scope,
state
}, this.providerConfig.extraRequestParams, this.props.extraRequestParams))
this.setState({
targetUrl: `${url}?${queryString}`,
stage: 'webView'
})
}
navigation = ({ url }) => {
const regex = new RegExp(`^${this.props.callbackUrl}\[\?#](.*)$`)
const parsedUrl = regex.exec(url)
if (parsedUrl) {
this.setState({ targetUrl : null })
setTimeout(() => {
this.setState({ stage: 'confirmation' })
const meteorUri = `${this.props.meteorServerProtocol}://${this.props.meteorServerDomain}/_oauth/${this.props.provider.toLowerCase()}?${parsedUrl[1]}`
fetch(meteorUri)
.then((res) => res.text())
.then((text) => {
let $ = cheerio.load(text)
const config = JSON.parse($('#config').text())
Meteor._login({ oauth: {
credentialToken: config.credentialToken,
credentialSecret: config.credentialSecret
}}, (err, res) => {
if (err) console.error('Error', err)
this.setState({ stage: 'initial' })
})
})
.catch((err) => {
console.error('Error', err)
this.setState({ stage: 'initial' })
})
}, 500)
}
}
renderStage = (stage, user) => {
if (user) {
return (<View style={this.styles.view}>
<Text style={this.styles.text}>Logged in as {user.profile.name}.</Text>
<View style={this.styles.buttonContainer}>
<TouchableOpacity onPress={() => Meteor.logout()} style={this.styles.buttonLogout}>
<Text style={this.styles.buttonLogoutText}>Logout</Text>
</TouchableOpacity>
</View>
</View>)
}
return {
initial: (
<View style={this.styles.buttonContainer}>
<TouchableOpacity onPress={this.login} style={this.styles.buttonLogin}>
<Text style={this.styles.buttonLoginText}>Login with {this.props.provider}</Text>
</TouchableOpacity>
</View>),
webView: (
<Modal
animationType='fade'
onRequestClose={() => this.setState({ stage: 'initial' })}
visible={!!this.state.targetUrl}
>
<WebView
source={{uri: this.state.targetUrl}}
onNavigationStateChange={this.navigation}
/>
</Modal>
),
confirmation: (<ActivityIndicator animating size='large' />)
}[stage]
}
render () {
return (
<View style={this.styles.view}>
{this.renderStage(this.state.stage, this.props.user)}
</View>
)
}
}
function stateParam (loginStyle, credentialToken, redirectUrl) {
var state = {
loginStyle: loginStyle,
credentialToken: credentialToken
}
if (loginStyle === 'redirect') state.redirectUrl = redirectUrl || null
return Base64.encode(JSON.stringify(state))
}
export default createContainer((params) => {
return {
user: Meteor.user()
}
}, Login)