constructor(platform: Platform, device: Device, appProvider: CoreAppProvider, fileProvider: CoreFileProvider,
            initDelegate: CoreInitDelegate, langProvider: CoreLangProvider, sitesProvider: CoreSitesProvider,
            localNotificationsProvider: CoreLocalNotificationsProvider, pushNotificationsProvider: AddonPushNotificationsProvider) {

        const currentSite = sitesProvider.getCurrentSite();

        this.appName = appProvider.isDesktop() ? CoreConfigConstants.desktopappname : CoreConfigConstants.appname;
        this.versionName = CoreConfigConstants.versionname;
        this.versionCode = CoreConfigConstants.versioncode;
        this.compilationTime = CoreConfigConstants.compilationtime;
        this.lastCommit = CoreConfigConstants.lastcommit;

        // Calculate the privacy policy to use.
        this.privacyPolicy = (currentSite && (currentSite.getStoredConfig('tool_mobile_apppolicy') ||
                currentSite.getStoredConfig('sitepolicy'))) || CoreConfigConstants.privacypolicy;

        this.navigator = window.navigator;
        if (window.location && window.location.href) {
            const url = window.location.href;
            this.locationHref = url.substr(0, url.indexOf('#'));
        }

        this.appReady = initDelegate.isReady() ? 'core.yes' : 'core.no';
        this.deviceType = platform.is('tablet') ? 'core.tablet' : 'core.phone';

        if (platform.is('android')) {
            this.deviceOs = 'core.android';
        } else if (platform.is('ios')) {
            this.deviceOs = 'core.ios';
        } else if (platform.is('windows')) {
            this.deviceOs = 'core.windowsphone';
        } else {
            const matches = navigator.userAgent.match(/\(([^\)]*)\)/);
            if (matches && matches.length > 1) {
                this.deviceOs = matches[1];
            } else {
                this.deviceOs = 'core.unknown';
            }
        }

        langProvider.getCurrentLanguage().then((lang) => {
            this.currentLanguage = lang;
        });

        this.networkStatus = appProvider.isOnline() ? 'core.online' : 'core.offline';
        this.wifiConnection = appProvider.isWifi() ? 'core.yes' : 'core.no';
        this.deviceWebWorkers = !!window['Worker'] && !!window['URL'] ? 'core.yes' : 'core.no';
        this.device = device;

        if (fileProvider.isAvailable()) {
            fileProvider.getBasePath().then((basepath) => {
                this.fileSystemRoot = basepath;
                this.fsClickable = fileProvider.usesHTMLAPI();
            });
        }

        this.localNotifAvailable = localNotificationsProvider.isAvailable() ? 'core.yes' : 'core.no';
        this.pushId = pushNotificationsProvider.getPushId();
    }

    constructor(mainMenuDelegate: CoreMainMenuDelegate, calendarHandler: AddonCalendarMainMenuHandler,
            initDelegate: CoreInitDelegate, calendarProvider: AddonCalendarProvider, loginHelper: CoreLoginHelperProvider,
            localNotificationsProvider: CoreLocalNotificationsProvider, updateManager: CoreUpdateManagerProvider) {
        mainMenuDelegate.registerHandler(calendarHandler);

        initDelegate.ready().then(() => {
            calendarProvider.scheduleAllSitesEventsNotifications();
        });

        localNotificationsProvider.registerClick(AddonCalendarProvider.COMPONENT, (data) => {
            if (data.eventid) {
                initDelegate.ready().then(() => {
                    calendarProvider.isDisabled(data.siteId).then((disabled) => {
                        if (disabled) {
                            // The calendar is disabled in the site, don't open it.
                            return;
                        }

                        loginHelper.redirect('AddonCalendarListPage', {eventId: data.eventid}, data.siteId);
                    });
                });
            }
        });

        // Allow migrating the table from the old app to the new schema.
        // In the old app some calculated properties were stored when it shouldn't. Filter only the fields we want.
        updateManager.registerSiteTableMigration({
            name: 'calendar_events',
            newName: AddonCalendarProvider.EVENTS_TABLE,
            filterFields: ['id', 'name', 'description', 'format', 'eventtype', 'courseid', 'timestart', 'timeduration',
                    'categoryid', 'groupid', 'userid', 'instance', 'modulename', 'timemodified', 'repeatid', 'visible', 'uuid',
                    'sequence', 'subscriptionid']
        });

        // Migrate the component name.
        updateManager.registerLocalNotifComponentMigration('mmaCalendarComponent', AddonCalendarProvider.COMPONENT);
    }

    constructor(initDelegate: CoreInitDelegate, remoteThemesProvider: AddonRemoteThemesProvider, eventsProvider: CoreEventsProvider,
            sitesProvider: CoreSitesProvider, loggerProvider: CoreLoggerProvider) {

        const logger = loggerProvider.getInstance('AddonRemoteThemesModule');

        // Preload the current site styles.
        initDelegate.registerProcess({
            name: 'AddonRemoteThemesPreloadCurrent',
            priority: CoreInitDelegate.MAX_RECOMMENDED_PRIORITY + 250,
            blocking: true,
            load: remoteThemesProvider.preloadCurrentSite.bind(remoteThemesProvider)
        });

        // Preload the styles of the rest of sites.
        initDelegate.registerProcess({
            name: 'AddonRemoteThemesPreload',
            blocking: true,
            load: remoteThemesProvider.preloadSites.bind(remoteThemesProvider)
        });

        let addingSite;

        // When a new site is added to the app, add its styles.
        eventsProvider.on(CoreEventsProvider.SITE_ADDED, (data) => {
            addingSite = data.siteId;

            remoteThemesProvider.addSite(data.siteId).catch((error) => {
                logger.error('Error adding site', error);
            }).then(() => {
                if (addingSite == data.siteId) {
                    addingSite = false;
                }

                // User has logged in, remove tmp styles and enable loaded styles.
                if (data.siteId == sitesProvider.getCurrentSiteId()) {
                    remoteThemesProvider.unloadTmpStyles();
                    remoteThemesProvider.enable(data.siteId);
                }
            });
        });

        // Update styles when current site is updated.
        eventsProvider.on(CoreEventsProvider.SITE_UPDATED, (data) => {
            if (data.siteId === sitesProvider.getCurrentSiteId()) {
                remoteThemesProvider.load(data.siteId).catch((error) => {
                    logger.error('Error loading site after site update', error);
                });
            }
        });

        // Enable styles of current site on login.
        eventsProvider.on(CoreEventsProvider.LOGIN, (data) => {
            remoteThemesProvider.unloadTmpStyles();
            remoteThemesProvider.enable(data.siteId);
        });

        // Disable added styles on logout.
        eventsProvider.on(CoreEventsProvider.LOGOUT, (data) => {
            remoteThemesProvider.clear();
        });

        // Remove site styles when a site is deleted.
        eventsProvider.on(CoreEventsProvider.SITE_DELETED, (site) => {
            remoteThemesProvider.removeSite(site.id);
        });

        // Load temporary styles when site config is checked in login.
        eventsProvider.on(CoreEventsProvider.LOGIN_SITE_CHECKED, (data) => {
            remoteThemesProvider.loadTmpStyles(data.config.mobilecssurl).catch((error) => {
                logger.error('Error loading tmp styles', error);
            });
        });

        // Unload temporary styles when site config is "unchecked" in login.
        eventsProvider.on(CoreEventsProvider.LOGIN_SITE_UNCHECKED, (data) => {
            if (data.siteId && data.siteId === addingSite) {
                // The tmp styles are from a site that is being added permanently.
                // Wait for the final site styles to be loaded before removing the tmp styles so there is no blink effect.
            } else {
                // The tmp styles are from a site that wasn't added in the end. Just remove them.
                remoteThemesProvider.unloadTmpStyles();
            }
        });
    }

        localNotificationsProvider.registerClick(AddonCalendarProvider.COMPONENT, (data) => {
            if (data.eventid) {
                initDelegate.ready().then(() => {
                    calendarProvider.isDisabled(data.siteId).then((disabled) => {
                        if (disabled) {
                            // The calendar is disabled in the site, don't open it.
                            return;
                        }

                        loginHelper.redirect('AddonCalendarListPage', {eventId: data.eventid}, data.siteId);
                    });
                });
            }
        });

    /**
     * View loaded.
     */
    ionViewDidLoad(): void {
        // Wait for the app to be ready.
        this.initDelegate.ready().then(() => {
            // Check if there was a pending redirect.
            const redirectData = this.appProvider.getRedirect();
            if (redirectData.siteId && redirectData.page) {
                // Unset redirect data.
                this.appProvider.storeRedirect('', '', '');

                // Only accept the redirect if it was stored less than 20 seconds ago.
                if (Date.now() - redirectData.timemodified < 20000) {
                    if (redirectData.siteId != CoreConstants.NO_SITE_ID) {
                        // The redirect is pointing to a site, load it.
                        return this.sitesProvider.loadSite(redirectData.siteId, redirectData.page, redirectData.params)
                                .then((loggedIn) => {

                            if (loggedIn) {
                                return this.loginHelper.goToSiteInitialPage(this.navCtrl, redirectData.page, redirectData.params,
                                        { animate: false });
                            }
                        }).catch(() => {
                            // Site doesn't exist.
                            return this.loadPage();
                        });
                    } else {
                        // No site to load, just open the state.
                        return this.navCtrl.setRoot(redirectData.page, redirectData.params, { animate: false });
                    }
                }
            }

            return this.loadPage();
        }).then(() => {
            // If we hide the splash screen now, the init view is still seen for an instant. Wait a bit to make sure it isn't seen.
            setTimeout(() => {
                this.splashScreen.hide();
            }, 100);
        });
    }