import React from 'react';
import { SessionIconButton, SessionIconSize, SessionIconType } from './icon';
import { Avatar } from '../Avatar';
import { SessionButton, SessionButtonColor, SessionButtonType } from './SessionButton';
import { MediaGallery } from '../conversation/media-gallery/MediaGallery';
import _ from 'lodash';


interface Props {
    id: string;
    name: string;
    memberCount: number;
    description: string;
    avatarPath: string;

    onGoBack: () => void;
    onInviteFriends: () => void;
    onLeaveGroup: () => void;
}

export class SessionChannelSettings extends React.Component<Props, any> {

    public constructor(props: Props) {
        super(props);

        this.state = {
            documents: Array<any>(),
            media: Array<any>(),
            onItemClick: undefined,
        };
    }

    public componentWillMount() {
        this.getMediaGalleryProps().then(({ documents, media, onItemClick }) => {
            this.setState({
                documents,
                media,
                onItemClick,
            });
        }).ignore();
    }

    public async getMediaGalleryProps() {
        // We fetch more documents than media as they don’t require to be loaded
        // into memory right away. Revisit this once we have infinite scrolling:
        const DEFAULT_MEDIA_FETCH_COUNT = 50;
        const DEFAULT_DOCUMENTS_FETCH_COUNT = 150;
        const conversationId = this.props.id;
        const rawMedia = await window.Signal.Data.getMessagesWithVisualMediaAttachments(
            conversationId,
            {
            limit: DEFAULT_MEDIA_FETCH_COUNT,
            MessageCollection: window.Whisper.MessageCollection,
            }
        );
        const rawDocuments = await window.Signal.Data.getMessagesWithFileAttachments(
            conversationId,
            {
            limit: DEFAULT_DOCUMENTS_FETCH_COUNT,
            MessageCollection: window.Whisper.MessageCollection,
            }
        );

        // First we upgrade these messages to ensure that they have thumbnails
        const max = rawMedia.length;
        for (let i = 0; i < max; i += 1) {
            const message = rawMedia[i];
            const { schemaVersion } = message;

            if (schemaVersion < message.VERSION_NEEDED_FOR_DISPLAY) {
            // Yep, we really do want to wait for each of these
            // eslint-disable-next-line no-await-in-loop
                rawMedia[i] = await window.Signal.Migrations.upgradeMessageSchema(message);
            // eslint-disable-next-line no-await-in-loop
            await window.Signal.Data.saveMessage(rawMedia[i], {
                Message: window.Whisper.Message,
            });
            }
        }

        // tslint:disable-next-line: underscore-consistent-invocation
        const media = _.flatten(
            rawMedia.map((message: { attachments: any }) => {
            const { attachments } = message;

            return (attachments || [])
                .filter(
                    (attachment: { thumbnail: any; pending: any; error: any }) =>
                    attachment.thumbnail &&
                    !attachment.pending &&
                    !attachment.error
                )
                .map((attachment: { path?: any; contentType?: any; thumbnail?: any }, index: any) => {
                const { thumbnail } = attachment;

                return {
                    objectURL: window.Signal.Migrations.getAbsoluteAttachmentPath(attachment.path),
                    thumbnailObjectUrl: thumbnail
                    ? window.Signal.Migrations.getAbsoluteAttachmentPath(thumbnail.path)
                    : null,
                    contentType: attachment.contentType,
                    index,
                    attachment,
                    message,
                };

                });
            })
        );

        // Unlike visual media, only one non-image attachment is supported
        const documents = rawDocuments.map((message: { attachments: Array<any> }) => {
            const attachments = message.attachments || [];
            const attachment = attachments[0];

            return {
            contentType: attachment.contentType,
            index: 0,
            attachment,
            message,
            };
        });

        const saveAttachment = async ({ attachment, message }: any = {}) => {
            const timestamp = message.received_at;
            window.Signal.Types.Attachment.save({
            attachment,
            document,
            getAbsolutePath: window.Signal.Migrations.getAbsoluteAttachmentPath,
            timestamp,
            });
        };

        const onItemClick = async ({ message, attachment, type } : any) => {
            switch (type) {
                case 'documents':
                case 'media': {
                    saveAttachment({ message, attachment }).ignore();
                    break;
                }

            /*case 'media': {
                const selectedIndex = media.findIndex(
                mediaMessage => mediaMessage.attachment.path === attachment.path
                );
                this.lightboxGalleryView = new Whisper.ReactWrapperView({
                className: 'lightbox-wrapper',
                Component: Signal.Components.LightboxGallery,
                props: {
                    media,
                    onSave: saveAttachment,
                    selectedIndex,
                },
                onClose: () => Signal.Backbone.Views.Lightbox.hide(),
                });
                Signal.Backbone.Views.Lightbox.show(this.lightboxGalleryView.el);
                break;
            }*/

            default:
                throw new TypeError(`Unknown attachment type: '${type}'`);
            }
        };

        return {
            documents,
            media,
            onItemClick,
        };
        }


    public render() {
        const { memberCount, name, onLeaveGroup } = this.props;
        const { documents, media, onItemClick } = this.state;

        return (
        <div className="group-settings">
            {this.renderHeader()}
            <h2>{name}</h2>
            {memberCount && <div className="text-subtle">{window.i18n('members', memberCount)}</div>}
            <input className="description" placeholder={window.i18n('description')} />

            <div className="group-settings-item" >{window.i18n('notifications')}</div>
            <div className="group-settings-item" >{window.i18n('disappearingMessages')}</div>
            <MediaGallery documents={documents} media={media} onItemClick={onItemClick} />
            <SessionButton text={window.i18n('leaveGroup')} buttonColor={SessionButtonColor.Danger} buttonType={SessionButtonType.SquareOutline} onClick={onLeaveGroup}/>
        </div>);
    }


    private renderHeader() {
        const { id, onGoBack, onInviteFriends, avatarPath } = this.props;

        return (
            <div className="group-settings-header">
                <SessionIconButton iconType={SessionIconType.Chevron} iconSize={SessionIconSize.Medium} iconRotation={90} onClick={onGoBack} />
                <Avatar avatarPath={avatarPath} phoneNumber={id} conversationType="group" size={80} />
                <SessionIconButton iconType={SessionIconType.AddUser} iconSize={SessionIconSize.Medium} onClick={onInviteFriends} />
            </div>
        );
    }
}