define(['connectionManager', 'globalize', 'userSettings', 'apphost'], function (connectionManager, globalize, userSettings, appHost) {
    'use strict';

    // TODO: Replace with date-fns
    // https://stackoverflow.com/questions/6117814/get-week-of-year-in-javascript-like-in-php
    function getWeek(date) {
        var d = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
        var dayNum = d.getUTCDay() || 7;
        d.setUTCDate(d.getUTCDate() + 4 - dayNum);
        var yearStart = new Date(Date.UTC(d.getUTCFullYear(), 0, 1));
        return Math.ceil((((d - yearStart) / 86400000) + 1) / 7);
    }

    function showMessage(text, userSettingsKey, appHostFeature) {
        if (appHost.supports(appHostFeature)) {
            return Promise.resolve();
        }

        var now = new Date();

        // TODO: Use date-fns
        userSettingsKey += now.getFullYear() + '-w' + getWeek(now);

        if (userSettings.get(userSettingsKey, false) === '1') {
            return Promise.resolve();
        }

        return new Promise(function (resolve, reject) {
            userSettings.set(userSettingsKey, '1', false);

            require(['alert'], function (alert) {
                return alert(text).then(resolve, resolve);
            });
        });
    }

    function showBlurayMessage() {
        return showMessage(globalize.translate('UnsupportedPlayback'), 'blurayexpirementalinfo', 'nativeblurayplayback');
    }

    function showDvdMessage() {
        return showMessage(globalize.translate('UnsupportedPlayback'), 'dvdexpirementalinfo', 'nativedvdplayback');
    }

    function showIsoMessage() {
        return showMessage(globalize.translate('UnsupportedPlayback'), 'isoexpirementalinfo', 'nativeisoplayback');
    }

    function ExpirementalPlaybackWarnings() {
        this.name = 'Experimental playback warnings';
        this.type = 'preplayintercept';
        this.id = 'expirementalplaybackwarnings';
    }

    ExpirementalPlaybackWarnings.prototype.intercept = function (options) {
        var item = options.item;
        if (!item) {
            return Promise.resolve();
        }

        if (item.VideoType === 'Iso') {
            return showIsoMessage();
        }

        if (item.VideoType === 'BluRay') {
            return showBlurayMessage();
        }

        if (item.VideoType === 'Dvd') {
            return showDvdMessage();
        }

        return Promise.resolve();
    };

    return ExpirementalPlaybackWarnings;
});