/* @flow */

import { Share } from 'react-native';

import { MiddlewareRegistry } from '../base/redux';

import { endShareRoom } from './actions';
import { BEGIN_SHARE_ROOM } from './actionTypes';

/**
 * Middleware that captures room URL sharing actions and starts the sharing
 * process.
 *
 * @param {Store} store - Redux store.
 * @returns {Function}
 */
MiddlewareRegistry.register(store => next => action => {
    switch (action.type) {
    case BEGIN_SHARE_ROOM:
        _shareRoom(action.roomURL, store.dispatch);
        break;
    }

    return next(action);
});

/**
 * Open the native sheet for sharing a specific conference/room URL.
 *
 * @param {string} roomURL - The URL of the conference/room to be shared.
 * @param {Dispatch} dispatch - The Redux dispatch function.
 * @private
 * @returns {void}
 */
function _shareRoom(roomURL: string, dispatch: Function) {
    // TODO The following display/human-readable strings were submitted for
    // review before i18n was introduces in react/. However, I reviewed it
    // afterwards. Translate the display/human-readable strings.
    const message = `Click the following link to join the meeting: ${roomURL}`;
    const title = 'Jitsi Meet Conference';
    const onFulfilled
        = (shared: boolean) => dispatch(endShareRoom(roomURL, shared));

    Share.share(
        /* content */ {
            message,
            title
        },
        /* options */ {
            dialogTitle: title, // Android
            subject: title // iOS
        })
        .then(
            /* onFulfilled */ value => {
                onFulfilled(value.action === Share.sharedAction);
            },
            /* onRejected */ reason => {
                console.error(
                    `Failed to share conference/room URL ${roomURL}:`,
                    reason);
                onFulfilled(false);
            });
}