// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import React from 'react';
import {Modal, Button} from 'react-bootstrap';
import {FormattedMessage, injectIntl, IntlShape} from 'react-intl';

import {PermissionType} from 'types/trustedOrigin';

import {ModalMessage} from 'types/modals';

import urlUtil from 'common/utils/url';
import {t} from 'common/utils/util';
import {MODAL_INFO} from 'common/communication';
import {PERMISSION_DESCRIPTION} from 'common/permissions';
import IntlProvider from 'renderer/intl_provider';

type Props = {
    handleDeny: React.MouseEventHandler<HTMLButtonElement>;
    handleGrant: React.MouseEventHandler<HTMLButtonElement>;
    getPermissionInfo: () => void;
    openExternalLink: (protocol: string, url: string) => void;
    intl: IntlShape;
};

type State = {
    url?: string;
    permission?: PermissionType;
}

class PermissionModal extends React.PureComponent<Props, State> {
    constructor(props: Props) {
        super(props);
        this.state = {};
    }

    componentDidMount() {
        window.addEventListener('message', this.handlePermissionInfoMessage);

        this.props.getPermissionInfo();
    }

    componentWillUnmount() {
        window.removeEventListener('message', this.handlePermissionInfoMessage);
    }

    handlePermissionInfoMessage = (event: {data: ModalMessage<{url: string; permission: PermissionType}>}) => {
        switch (event.data.type) {
        case MODAL_INFO: {
            const {url, permission} = event.data.data;
            this.setState({url, permission});
            break;
        }
        default:
            break;
        }
    }

    getModalTitle() {
        const permission = this.props.intl.formatMessage({id: `common.permissions.${PERMISSION_DESCRIPTION[this.state.permission!]}`});
        return this.props.intl.formatMessage({id: 'renderer.modals.permission.permissionModal.title', defaultMessage: '{permission} Required'}, {permission});
    }

    getModalBody() {
        const {url, permission} = this.state;
        const originDisplay = url ? urlUtil.getHost(url) : this.props.intl.formatMessage({id: 'renderer.modals.permission.permissionModal.unknownOrigin', defaultMessage: 'unknown origin'});
        const originLink = url ? originDisplay : '';

        const click = (e: React.MouseEvent<HTMLAnchorElement>) => {
            e.preventDefault();
            let parseUrl;
            try {
                parseUrl = urlUtil.parseURL(originLink);
                this.props.openExternalLink(parseUrl!.protocol, originLink);
            } catch (err) {
                console.error(`invalid url ${originLink} supplied to externallink: ${err}`);
            }
        };

        return (
            <div>
                <p>
                    <FormattedMessage
                        id='renderer.modals.permission.permissionModal.body'
                        defaultMessage={'A site that\'s not included in your Mattermost server configuration requires access for {permission}.'}
                        values={{
                            permission: this.props.intl.formatMessage({id: `common.permissions.${PERMISSION_DESCRIPTION[permission!]}`}),
                        }}
                    />
                    {}
                </p>
                <p>
                    <FormattedMessage
                        id='renderer.modals.permission.permissionModal.requestOriginatedFrom'
                        defaultMessage='This request originated from '
                    />
                    <a onClick={click}>{originDisplay}</a>
                </p>
            </div>
        );
    }

    render() {
        return (
            <IntlProvider>
                <Modal
                    bsClass='modal'
                    className='permission-modal'
                    show={Boolean(this.state.url && this.state.permission)}
                    id='requestPermissionModal'
                    enforceFocus={true}
                    onHide={() => {}}
                >
                    <Modal.Header>
                        <Modal.Title>{this.getModalTitle()}</Modal.Title>
                    </Modal.Header>
                    <Modal.Body>
                        {this.getModalBody()}
                    </Modal.Body>
                    <Modal.Footer className={'remove-border'}>
                        <div>
                            <Button onClick={this.props.handleDeny}>
                                <FormattedMessage
                                    id='label.cancel'
                                    defaultMessage='Cancel'
                                />
                            </Button>
                            <Button
                                variant='primary'
                                onClick={this.props.handleGrant}
                            >
                                <FormattedMessage
                                    id='label.accept'
                                    defaultMessage='Accept'
                                />
                            </Button>
                        </div>
                    </Modal.Footer>
                </Modal>
            </IntlProvider>
        );
    }
}

t('common.permissions.canBasicAuth');

export default injectIntl(PermissionModal);