import React from 'react';
import { connect } from 'react-redux';
import tt from 'counterpart';
import { PrivateKey } from '@steemit/steem-js/lib/auth/ecc';
import { api } from '@steemit/steem-js';

import * as userActions from 'app/redux/UserReducer';
import * as transactionActions from 'app/redux/TransactionReducer';
import GeneratedPasswordInput from 'app/components/elements/GeneratedPasswordInput';
import LoadingIndicator from 'app/components/elements/LoadingIndicator';
import Callout from 'app/components/elements/Callout';

function passwordToOwnerPubKey(account_name, password) {
    let pub_key;
    try {
        pub_key = PrivateKey.fromWif(password);
    } catch (e) {
        pub_key = PrivateKey.fromSeed(account_name + 'owner' + password);
    }
    return pub_key.toPublicKey().toString();
}

class RecoverAccountStep2 extends React.Component {
    static propTypes = {
        account_to_recover: React.PropTypes.string,
        recoverAccount: React.PropTypes.func.isRequired,
    };

    constructor(props) {
        super(props);
        this.state = {
            name_error: '',
            oldPassword: '',
            newPassword: '',
            valid: false,
            error: '',
            progress_status: '',
            success: false,
        };
        this.onPasswordChange = this.onPasswordChange.bind(this);
        this.oldPasswordChange = this.oldPasswordChange.bind(this);
        this.onSubmit = this.onSubmit.bind(this);
        this.onRecoverFailed = this.onRecoverFailed.bind(this);
        this.onRecoverSuccess = this.onRecoverSuccess.bind(this);
    }

    oldPasswordChange(e) {
        const oldPassword = e.target.value.trim();
        this.setState({ oldPassword });
    }

    onPasswordChange(newPassword, valid) {
        this.setState({ newPassword, valid });
    }

    onRecoverFailed(error) {
        this.setState({
            error: error.msg || error.toString(),
            progress_status: '',
        });
    }

    onRecoverSuccess() {
        this.setState({ success: true, progress_status: '' });
    }

    checkOldOwner(name, oldOwner) {
        return api.getOwnerHistoryAsync(name).then(history => {
            const res = history.filter(a => {
                const owner = a.previous_owner_authority.key_auths[0][0];
                return owner === oldOwner;
            });
            return res.length > 0;
        });
    }

    requestAccountRecovery(name, oldPassword, newPassword) {
        const old_owner_key = passwordToOwnerPubKey(name, oldPassword);
        const new_owner_key = passwordToOwnerPubKey(name, newPassword);
        const new_owner_authority = {
            weight_threshold: 1,
            account_auths: [],
            key_auths: [[new_owner_key, 1]],
        };
        fetch('/api/v1/request_account_recovery', {
            method: 'post',
            mode: 'no-cors',
            credentials: 'same-origin',
            headers: {
                Accept: 'application/json',
                'Content-type': 'application/json',
            },
            body: JSON.stringify({
                csrf: $STM_csrf,
                name,
                old_owner_key,
                new_owner_key,
                new_owner_authority,
            }),
        })
            .then(r => r.json())
            .then(res => {
                if (res.error) {
                    console.error(
                        'request_account_recovery server error (1)',
                        res.error
                    );
                    this.setState({
                        error: res.error || tt('g.unknown'),
                        progress_status: '',
                    });
                } else {
                    this.setState({
                        error: '',
                        progress_status:
                            tt('recoveraccountstep1_jsx.recovering_account') +
                            '..',
                    });
                    this.props.recoverAccount(
                        name,
                        oldPassword,
                        newPassword,
                        this.onRecoverFailed,
                        this.onRecoverSuccess
                    );
                }
            })
            .catch(error => {
                console.error(
                    'request_account_recovery server error (2)',
                    error
                );
                this.setState({
                    error: error.message ? error.message : error,
                    progress_status: '',
                });
            });
    }

    onSubmit(e) {
        e.preventDefault();
        const { oldPassword, newPassword } = this.state;
        const name = this.props.account_to_recover;
        const oldOwner = passwordToOwnerPubKey(name, oldPassword);
        this.setState({
            progress_status:
                tt('recoveraccountstep1_jsx.checking_account_owner') + '..',
        });
        this.checkOldOwner(name, oldOwner).then(res => {
            if (res) {
                this.setState({
                    progress_status:
                        tt('recoveraccountstep1_jsx.sending_recovery_request') +
                        '..',
                });
                this.requestAccountRecovery(name, oldPassword, newPassword);
            } else {
                this.setState({
                    error: tt(
                        'recoveraccountstep1_jsx.cant_confirm_account_ownership'
                    ),
                    progress_status: '',
                });
            }
        });
    }

    render() {
        if (!process.env.BROWSER) {
            // don't render this page on the server
            return (
                <div className="row">
                    <div className="column">{tt('g.loading')}..</div>
                </div>
            );
        }
        const { account_to_recover } = this.props;
        if (!account_to_recover) {
            return (
                <Callout type="error">
                    <span>
                        {tt(
                            'recoveraccountstep1_jsx.account_recovery_request_not_confirmed'
                        )}
                    </span>
                </Callout>
            );
        }
        const {
            oldPassword,
            valid,
            error,
            progress_status,
            name_error,
            success,
        } = this.state;
        const submit_btn_class =
            'button action' + (!valid || !oldPassword ? ' disabled' : '');

        let submit = null;
        if (progress_status) {
            submit = (
                <span>
                    <LoadingIndicator type="circle" inline /> {progress_status}
                </span>
            );
        } else {
            if (success) {
                // submit = <h4>Congratulations! Your account has been recovered. Please login using your new password.</h4>;
                window.location = `/login.html#account=${
                    account_to_recover
                }&msg=accountrecovered`;
            } else {
                submit = (
                    <input
                        disabled={!valid}
                        type="submit"
                        className={submit_btn_class}
                        value="Submit"
                    />
                );
            }
        }
        const disable_password_input = success || progress_status !== '';

        return (
            <div className="RestoreAccount SignUp">
                <div className="row">
                    <div className="column large-6">
                        <h2>{tt('recoveraccountstep1_jsx.recover_account')}</h2>
                        <form
                            onSubmit={this.onSubmit}
                            autoComplete="off"
                            noValidate
                        >
                            <div className={name_error ? 'error' : ''}>
                                <label>
                                    {tt('g.account_name')}
                                    <input
                                        type="text"
                                        disabled="true"
                                        autoComplete="off"
                                        value={account_to_recover}
                                    />
                                </label>
                                <p className="help-text">{name_error}</p>
                            </div>
                            <br />
                            <div>
                                <label>
                                    {tt('postfull_jsx.recent_password')}
                                    <input
                                        type="password"
                                        disabled={disable_password_input}
                                        autoComplete="off"
                                        value={oldPassword}
                                        onChange={this.oldPasswordChange}
                                    />
                                </label>
                            </div>
                            <br />
                            <GeneratedPasswordInput
                                onChange={this.onPasswordChange}
                                disabled={disable_password_input}
                                showPasswordString={oldPassword.length > 0}
                            />
                            <div className="error">{error}</div>
                            <br />
                            {submit}
                        </form>
                    </div>
                </div>
            </div>
        );
    }
}

module.exports = {
    path: 'recover_account_step_2',
    component: connect(
        state => {
            return {
                account_to_recover: state.offchain.get('recover_account'),
            };
        },
        dispatch => ({
            recoverAccount: (
                account_to_recover,
                old_password,
                new_password,
                onError,
                onSuccess
            ) => {
                dispatch(
                    transactionActions.recoverAccount({
                        account_to_recover,
                        old_password,
                        new_password,
                        onError,
                        onSuccess,
                    })
                );
                dispatch(userActions.logout());
            },
        })
    )(RecoverAccountStep2),
};
