/*
 * Copyright 2017-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */

import * as React from 'react';

import { I18n, ConsoleLogger as Logger } from '@aws-amplify/core';
import Auth from '@aws-amplify/auth';

import AuthPiece from './AuthPiece';
import AmplifyTheme from '../Amplify-UI/Amplify-UI-Theme';

import {
    FormSection,
    SectionHeader,
    SectionBody,
    SectionFooter,
    Input,
    InputLabel,
    Button,
    FormField,
    Link,
    SectionFooterPrimaryContent,
    SectionFooterSecondaryContent,
} from '../Amplify-UI/Amplify-UI-Components-React';

const logger = new Logger('ForgotPassword');

export default class ForgotPassword extends AuthPiece {
    constructor(props) {
        super(props);

        this.send = this.send.bind(this);
        this.submit = this.submit.bind(this);

        this._validAuthStates = ['forgotPassword'];
        this.state = { delivery: null };
    }

    send() {
        const { authData={} } = this.props;
        const username = this.inputs.username || authData.username;
        if (!Auth || typeof Auth.forgotPassword !== 'function') {
            throw new Error('No Auth module found, please ensure @aws-amplify/auth is imported');
        }
        Auth.forgotPassword(username)
            .then(data => {
                logger.debug(data)
                this.setState({ delivery: data.CodeDeliveryDetails });
            })
            .catch(err => this.error(err));
    }

    submit() {
        const { authData={} } = this.props;
        const { code, password } = this.inputs;
        const username = this.inputs.username || authData.username;
        
        if (!Auth || typeof Auth.forgotPasswordSubmit !== 'function') {
            throw new Error('No Auth module found, please ensure @aws-amplify/auth is imported');
        }
        Auth.forgotPasswordSubmit(username, code, password)
            .then(data => {
                logger.debug(data);
                this.changeState('signIn');
                this.setState({ delivery: null });
            })
            .catch(err => this.error(err));
    }

    sendView() {
        const theme = this.props.theme || AmplifyTheme;
        return (
            <div>
                <FormField theme={theme}>
                    <InputLabel theme={theme}>{I18n.get('Username')} *</InputLabel>
                    <Input
                        autoFocus
                        placeholder={I18n.get('Enter your username')}
                        theme={theme}
                        key="username"
                        name="username"
                        onChange={this.handleInputChange}
                    />
                </FormField>
            </div>
        );
    }

    submitView() {
        const theme = this.props.theme || AmplifyTheme;
        return (
            <div>
                <Input
                    placeholder={I18n.get('Code')}
                    theme={theme}
                    key="code"
                    name="code"
                    autoComplete="off"
                    onChange={this.handleInputChange}
                />
                <Input
                    placeholder={I18n.get('New Password')}
                    theme={theme}
                    type="password"
                    key="password"
                    name="password"
                    onChange={this.handleInputChange}
                />
            </div>
        );
    }

    showComponent(theme) {
        const { authState, hide, authData={} } = this.props;
        if (hide && hide.includes(ForgotPassword)) { return null; }

        return (
            <FormSection theme={theme}>
                <SectionHeader theme={theme}>{I18n.get('Reset your password')}</SectionHeader>
                <SectionBody theme={theme}>
                    { this.state.delivery || authData.username ? this.submitView() : this.sendView() }
                </SectionBody>
                <SectionFooter theme={theme}>
                    <SectionFooterPrimaryContent theme={theme}>
                        { this.state.delivery || authData.username ? 
                            <Button theme={theme} onClick={this.submit}>{I18n.get('Submit')}</Button> :
                            <Button theme={theme} onClick={this.send}>{I18n.get('Send Code')}</Button>
                        }
                    </SectionFooterPrimaryContent>
                    <SectionFooterSecondaryContent theme={theme}>
                        { this.state.delivery || authData.username ?
                            <Link theme={theme} onClick={this.send}>{I18n.get('Resend Code')}</Link> :
                            <Link theme={theme} onClick={() => this.changeState('signIn')}>
                                {I18n.get('Back to Sign In')}
                            </Link>
                        }
                    </SectionFooterSecondaryContent>
                </SectionFooter>
            </FormSection>
        );
    }
}