/* eslint react/prop-types: 0 */
/*global $STM_csrf, $STM_Config */
import React from 'react';
import {connect} from 'react-redux';
import Progress from 'react-foundation-components/lib/global/progress-bar';
import { Link } from 'react-router';
import classNames from 'classnames';
import {api} from '@steemit/steem-js';

import * as userActions from 'app/redux/UserReducer';
import {validate_account_name} from 'app/utils/ChainValidation';
import runTests from 'app/utils/BrowserTests';
import {PARAM_VIEW_MODE} from 'shared/constants';
import {makeParams} from 'app/utils/Links';


class PickAccount extends React.Component {
    static propTypes = {
        loginUser: React.PropTypes.func.isRequired,
        serverBusy: React.PropTypes.bool
    };


    constructor(props) {
        super(props);
        this.state = {
            name: '',
            password: '',
            password_valid: '',
            name_error: '',
            server_error: '',
            loading: false,
            cryptographyFailure: false,
            showRules: false,
            subheader_hidden: true
        };
        this.onSubmit = this.onSubmit.bind(this);
        this.onNameChange = this.onNameChange.bind(this);
        this.onPasswordChange = this.onPasswordChange.bind(this);
    }

    componentDidMount() {
        const cryptoTestResult = runTests();
        if (cryptoTestResult !== undefined) {
            console.error('CreateAccount - cryptoTestResult: ', cryptoTestResult);
            this.setState({cryptographyFailure: true}); // TODO: do not use setState in componentDidMount
        }
    }

    onSubmit(e) {
        e.preventDefault();
        this.setState({server_error: '', loading: true});
        const {name} = this.state;
        if (!name) return;
        const params = {account: name};
        if(this.props.viewMode) {
            params[PARAM_VIEW_MODE] = this.props.viewMode;
        }
        window.location = "/enter_email" + makeParams(params);
    }

    onPasswordChange(password, password_valid) {
        this.setState({password, password_valid});
    }

    onNameChange(e) {
        const name = e.target.value.trim().toLowerCase();
        this.validateAccountName(name);
        this.setState({name});
    }

    validateAccountName(name) {
        let name_error = '';
        let promise;
        if (name.length > 0) {
            name_error = validate_account_name(name);
            if (!name_error) {
                this.setState({name_error: ''});
                promise = api.getAccountsAsync([name]).then(res => {
                    return res && res.length > 0 ? 'Account name is not available' : '';
                });
            }
        }
        if (promise) {
            promise
                .then(name_error => this.setState({name_error}))
                .catch(() => this.setState({
                    name_error: "Account name can't be verified right now due to server failure. Please try again later."
                }));
        } else {
            this.setState({name_error});
        }
    }

    render() {
        if (!process.env.BROWSER) { // don't render this page on the server
            return <div className="row">
                <div className="column">
                    <p className="text-center">LOADING..</p>
                </div>
            </div>;
        }

        const {
            name, name_error, server_error, loading, cryptographyFailure
        } = this.state;

        const {loggedIn, logout, offchainUser, serverBusy} = this.props;
        const submit_btn_disabled = loading || !name || name_error;
        const submit_btn_class = classNames('button action', {disabled: submit_btn_disabled});
        const account_status = offchainUser ? offchainUser.get('account_status') : null;

        if (serverBusy || $STM_Config.disable_signups) {
            return <div className="row">
                <div className="column">
                    <div className="callout alert">
                        <p>The creation of new accounts is temporarily disabled.</p>
                    </div>
                </div>
            </div>;
        }
        if (cryptographyFailure) {
            return <div className="row">
                <div className="column">
                    <div className="callout alert">
                        <h4>Browser Out of Date</h4>
                        <p>We will be unable to create your Steem account with this browser.</p>
                        <p>The latest versions of <a href="https://www.google.com/chrome/">Chrome</a> and <a href="https://www.mozilla.org/en-US/firefox/new/">Firefox</a>
                            are well-tested and known to work well with steemit.com.</p>
                    </div>
                </div>
            </div>;
        }

        if (loggedIn) {
            return <div className="row">
                <div className="column">
                    <div className="callout alert">
                        <p>You need to <a href="#" onClick={logout}>Logout</a> before you can create an additional account.</p>
                        <p>Please note that Steemit can only register one account per verified user.</p>
                    </div>
                </div>
            </div>;
        }

        if (account_status === 'waiting') {
            return <div className="row">
                <div className="column">
                    <br />
                    <div className="callout alert">
                        <p>Your sign up request is being processed and you will receive an email from us when it is ready.</p>
                        <p>Signup requests can take up to 7 days to be processed, but usually complete in a day or two.</p>
                    </div>
                </div>
            </div>;
        }

        if (account_status === 'approved') {
            return <div className="row">
                <div className="column">
                    <br />
                    <div className="callout success">
                        <p>Congratulations! Your sign up request has been approved.</p>
                        <p><Link to="/create_account">Let's get your account created!</Link></p>
                    </div>
                </div>
            </div>;
        }

        // const existingUserAccount = offchainUser.get('account');
        // if (existingUserAccount) {
        //     return <div className="row">
        //         <div className="column">
        //             <div className="callout alert">
        //                 <p>Our records indicate that you already have steem account: <strong>{existingUserAccount}</strong></p>
        //                 <p>In order to prevent abuse Steemit can only register one account per verified user.</p>
        //                 <p>You can either <a href="/login.html">login</a> to your existing account
        //                     or <a href="mailto:support@steemit.com">send us email</a> if you need a new account.</p>
        //             </div>
        //         </div>
        //     </div>;
        // }

        let next_step = null;
        if (server_error) {
            if (server_error === 'Email address is not confirmed') {
                next_step = <div className="callout alert">
                    <a href="/enter_email">Please verify your email address</a>
                </div>;
            } else if (server_error === 'Phone number is not confirmed') {
                next_step = <div className="callout alert">
                    <a href="/enter_mobile">Please verify your phone number</a>
                </div>;
            } else {
                next_step = <div className="callout alert">
                    <h5>Couldn't create account. The server returned the following error:</h5>
                    <p>{server_error}</p>
                </div>;
            }
        }

        return (
            <div>
                <div className="CreateAccount row">
                    <div className="column" style={{maxWidth: '36rem', margin: '0 auto'}}>
                        <br />
                        <Progress tabIndex="0" value={10} max={100} />
                        <br />
                        <h4 className="CreateAccount__title">Welcome to Steemit</h4>
                        <div>
                             <p>Your account name is how you will be known on steemit.com.<br />
                                 {/*Your account name <strong>can never be changed</strong>, so please choose carefully.*/}</p>
                        </div>
                        <form onSubmit={this.onSubmit} autoComplete="off" noValidate method="post">
                            <div className={name_error ? 'error' : ''}>
                                <label>ACCOUNT NAME</label>
                                <input type="text" name="name" autoComplete="off" onChange={this.onNameChange} value={name} placeholder={"Name..."} />
                                <p>{name_error}</p>
                            </div>
                            <input disabled={submit_btn_disabled} type="submit" className={submit_btn_class} value="Continue" />
                        </form>
                        <br />
                        <p className="secondary whistle-hidden">Got an account? <Link to="/login.html">Login</Link></p>
                    </div>
                </div>
            </div>
        );
    }
}

module.exports = {
    path: 'pick_account',
    component: connect(
        state => {
            return {
                viewMode: state.app.get('viewMode'),
                loggedIn: !!state.user.get('current'),
                offchainUser: state.offchain.get('user'),
                serverBusy: state.offchain.get('serverBusy')
            }
        },
        dispatch => ({
            loginUser: (username, password) => dispatch(userActions.usernamePasswordLogin({username, password, saveLogin: true})),
            logout: e => {
                if (e) e.preventDefault();
                dispatch(userActions.logout())
            }
        })
    )(PickAccount)
};
