'use strict';

/* global angular */
/* global $ */
/* global async */
/* global ERROR */
/* global RSTATES */
/* global moment */

angular.module('Application').controller('AppStoreController', ['$scope', '$translate', '$location', '$timeout', '$routeParams', 'Client', function ($scope, $translate, $location, $timeout, $routeParams, Client) {
    Client.onReady(function () { if (!Client.getUserInfo().isAtLeastAdmin) $location.path('/'); });

    $scope.HOST_PORT_MIN = 1;
    $scope.HOST_PORT_MAX = 65535;

    $scope.ready = false;
    $scope.apps = [];
    $scope.popularApps = [];
    $scope.config = Client.getConfig();
    $scope.user = Client.getUserInfo();
    $scope.users = [];
    $scope.groups = [];
    $scope.domains = [];
    $scope.category = '';
    $scope.cachedCategory = ''; // used to cache the selected category while searching
    $scope.searchString = '';
    $scope.validSubscription = false;
    $scope.subscription = {};
    $scope.memory = null; // { memory, swap }

    $scope.showView = function (view) {
        $('#appInstallModal').off('hidden.bs.modal');

        // wait for dialog to be fully closed to avoid modal behavior breakage when moving to a different view already
        $('.modal').on('hidden.bs.modal', function () {
            $scope.appInstall.reset();
            $('.modal').off('hidden.bs.modal');
            $location.path(view).search({});
        });

        $('.modal').modal('hide');
    };

    // If new categories added make sure the translation below exists
    $scope.categories = [
        { id: 'analytics', icon: 'fa fa-chart-line', label: 'Analytics'},
        { id: 'automation', icon: 'fa fa-robot', label: 'Automation'},
        { id: 'blog', icon: 'fa fa-font', label: 'Blog'},
        { id: 'chat', icon: 'fa fa-comments', label: 'Chat'},
        { id: 'crm', icon: 'fab fa-connectdevelop', label: 'CRM'},
        { id: 'document', icon: 'fa fa-file-word', label: 'Documents'},
        { id: 'email', icon: 'fa fa-envelope', label: 'Email'},
        { id: 'federated', icon: 'fa fa-project-diagram', label: 'Federated'},
        { id: 'finance', icon: 'fa fa-hand-holding-usd', label: 'Finance'},
        { id: 'forum', icon: 'fa fa-users', label: 'Forum'},
        { id: 'fun', icon: 'fa fa-gamepad', label: 'Fun'},
        { id: 'gallery', icon: 'fa fa-images', label: 'Gallery'},
        { id: 'game', icon: 'fa fa-gamepad', label: 'Games'},
        { id: 'git', icon: 'fa fa-code-branch', label: 'Code Hosting'},
        { id: 'hosting', icon: 'fa fa-server', label: 'Web Hosting'},
        { id: 'learning', icon: 'fas fa-graduation-cap', label: 'Learning'},
        { id: 'media', icon: 'fas fa-photo-video', label: 'Media'},
        { id: 'no-code', icon: 'fas fa-code', label: 'No-code'},
        { id: 'notes', icon: 'fa fa-sticky-note', label: 'Notes'},
        { id: 'project', icon: 'fas fa-project-diagram', label: 'Project Management'},
        { id: 'sync', icon: 'fa fa-sync-alt', label: 'File Sync'},
        { id: 'voip', icon: 'fa fa-headset', label: 'VoIP'},
        { id: 'vpn', icon: 'fa fa-user-secret', label: 'VPN'},
        { id: 'wiki', icon: 'fab fa-wikipedia-w', label: 'Wiki'},
    ];

    // Translation IDs are generated as "appstore.category.<categoryId>"
    $translate($scope.categories.map(function (c) { return 'appstore.category.' + c.id; })).then(function (tr) {
        Object.keys(tr).forEach(function (key) {
            if (key === tr[key]) return; // missing translation use default label

            var category = $scope.categories.find(function (c) { return key.endsWith(c.id); });
            if (category) category.label = tr[key];
        });
    });

    $scope.categoryButtonLabel = function (category) {
        var categoryLabel = $translate.instant('appstore.categoryLabel');

        if (category === '') return $translate.instant('appstore.category.all');
        if (category === 'new') return $translate.instant('appstore.category.newApps');

        var tmp = $scope.categories.find(function (c) { return c.id === category; });
        if (tmp) return tmp.label;

        return categoryLabel;
    };

    $scope.isProxyApp = function (app) {
        if (!app) return false;

        return app.id === 'io.cloudron.builtin.appproxy';
    };

    $scope.userManagementFilterOptions = [
        { id: '', icon: '', label: $translate.instant('appstore.ssofilter.all') },
        { id: 'sso', icon: 'fas fa-user', label: $translate.instant('apps.auth.sso') },
        { id: 'nosso', icon: 'far fa-user', label: $translate.instant('apps.auth.nosso') },
        { id: 'email', icon: 'fas fa-envelope', label: $translate.instant('apps.auth.email') },
    ];
    $scope.userManagementFilterOption = $scope.userManagementFilterOptions[0];

    $scope.userManagementFilterOptionIsActive = function (option) {
        return option.id === $scope.userManagementFilterOption.id;
    };

    $scope.applyUserMangamentFilter = function (option) {
        $scope.userManagementFilterOption = option;
    };

    $scope.appInstall = {
        busy: false,
        state: 'appInfo',
        error: {},
        app: {},
        needsOverwrite: false,
        subdomain: '',
        domain: null, // object and not the string
        secondaryDomains: {},
        ports: {},
        portsEnabled: {},
        mediaLinks: [],
        keyFile: null,
        keyFileName: '',
        accessRestrictionOption: '',
        accessRestriction: { users: [], groups: [] },
        customAuth: false,
        optionalSso: false,
        subscriptionErrorMesssage: '',
        upstreamUri: '',

        isAccessRestrictionValid: function () {
            var tmp = $scope.appInstall.accessRestriction;
            return !!(tmp.users.length || tmp.groups.length);
        },

        reset: function () {
            $scope.appInstall.app = {};
            $scope.appInstall.error = {};
            $scope.appInstall.needsOverwrite = false;
            $scope.appInstall.subdomain = '';
            $scope.appInstall.domain = null;
            $scope.appInstall.secondaryDomains = {};
            $scope.appInstall.ports = {};
            $scope.appInstall.state = 'appInfo';
            $scope.appInstall.mediaLinks = [];
            $scope.appInstall.keyFile = null;
            $scope.appInstall.keyFileName = '';
            $scope.appInstall.accessRestrictionOption = '';
            $scope.appInstall.accessRestriction = { users: [], groups: [] };
            $scope.appInstall.optionalSso = false;
            $scope.appInstall.customAuth = false;
            $scope.appInstall.subscriptionErrorMesssage = '';
            $scope.appInstall.upstreamUri = '';

            $('#collapseInstallForm').collapse('hide');
            $('#collapseResourceConstraint').collapse('hide');
            $('#collapseSubscriptionRequired').collapse('hide');
            $('#collapseMediaLinksCarousel').collapse('show');

            if ($scope.appInstallForm) {
                $scope.appInstallForm.$setPristine();
                $scope.appInstallForm.$setUntouched();
            }
        },

        showForm: function (force) {
            var app = $scope.appInstall.app;
            var DEFAULT_MEMORY_LIMIT = 1024 * 1024 * 256;

            var needed = app.manifest.memoryLimit || DEFAULT_MEMORY_LIMIT; // RAM
            var used = Client.getInstalledApps().reduce(function (prev, cur) {
                if (cur.runState === RSTATES.STOPPED) return prev;

                return prev + (cur.memoryLimit || cur.manifest.memoryLimit || DEFAULT_MEMORY_LIMIT);
            }, 0);
            var totalMemory = $scope.memory.memory * 2;
            var available = (totalMemory || 0) - used;

            var enoughResourcesAvailable = (available - needed) >= 0;

            if (enoughResourcesAvailable || force) {
                $scope.appInstall.state = 'installForm';
                $('#collapseMediaLinksCarousel').collapse('hide');
                $('#collapseResourceConstraint').collapse('hide');
                $('#collapseInstallForm').collapse('show');
                $('#appInstallLocationInput').focus();
            } else {
                $scope.appInstall.state = 'resourceConstraint';
                $('#collapseMediaLinksCarousel').collapse('hide');
                $('#collapseResourceConstraint').collapse('show');
            }
        },

        show: function (app) { // this is an appstore app object!
            $scope.appInstall.reset();

            // make a copy to work with in case the app object gets updated while polling
            angular.copy(app, $scope.appInstall.app);

            $scope.appInstall.mediaLinks = $scope.appInstall.app.manifest.mediaLinks || [];
            $scope.appInstall.domain = $scope.domains.find(function (d) { return $scope.config.adminDomain === d.domain; }); // pre-select the adminDomain

            $scope.appInstall.secondaryDomains = {};
            var httpPorts = $scope.appInstall.app.manifest.httpPorts || {};
            for (var env2 in httpPorts) {
                $scope.appInstall.secondaryDomains[env2] = {
                    subdomain: httpPorts[env2].defaultValue || '',
                    domain: $scope.appInstall.domain
                };
            }

            $scope.appInstall.portInfo = angular.extend({}, $scope.appInstall.app.manifest.tcpPorts, $scope.appInstall.app.manifest.udpPorts);   // Portbinding map only for information
            $scope.appInstall.ports = {};                            // This holds the env:port pair
            $scope.appInstall.portsEnabled = {};                     // This holds the enabled/disabled flag

            var manifest = app.manifest;
            $scope.appInstall.optionalSso = !!manifest.optionalSso;
            $scope.appInstall.customAuth = !(manifest.addons['ldap'] || manifest.addons['oidc'] || manifest.addons['proxyAuth']);

            $scope.appInstall.accessRestrictionOption = $scope.groups.length ? '' : 'any'; // make the user select an ACL conciously if groups are used
            $scope.appInstall.accessRestriction = { users: [], groups: [] };

            // set default ports
            var allPorts = angular.extend({}, $scope.appInstall.app.manifest.tcpPorts, $scope.appInstall.app.manifest.udpPorts);
            for (var env in allPorts) {
                $scope.appInstall.ports[env] = allPorts[env].defaultValue || 0;
                $scope.appInstall.portsEnabled[env] = true;
            }

            $('#appInstallModal').modal('show');
        },

        submit: function () {
            $scope.appInstall.busy = true;
            $scope.appInstall.error.other = null;
            $scope.appInstall.error.location = null;
            $scope.appInstall.error.port = null;

            var secondaryDomains = {};
            for (var env2 in $scope.appInstall.secondaryDomains) {
                secondaryDomains[env2] = {
                    subdomain: $scope.appInstall.secondaryDomains[env2].subdomain,
                    domain: $scope.appInstall.secondaryDomains[env2].domain.domain
                };
            }

            // only use enabled ports from ports
            var finalPorts = {};
            for (var env in $scope.appInstall.ports) {
                if ($scope.appInstall.portsEnabled[env]) {
                    finalPorts[env] = $scope.appInstall.ports[env];
                }
            }

            var finalAccessRestriction = null;
            if ($scope.appInstall.accessRestrictionOption === 'groups') {
                finalAccessRestriction = { users: [], groups: [] };
                finalAccessRestriction.users = $scope.appInstall.accessRestriction.users.map(function (u) { return u.id; });
                finalAccessRestriction.groups = $scope.appInstall.accessRestriction.groups.map(function (g) { return g.id; });
            }

            var data = {
                overwriteDns: $scope.appInstall.needsOverwrite,
                subdomain: $scope.appInstall.subdomain || '',
                domain: $scope.appInstall.domain.domain,
                secondaryDomains: secondaryDomains,
                ports: finalPorts,
                accessRestriction: finalAccessRestriction,
                sso: !$scope.appInstall.optionalSso ? undefined : ($scope.appInstall.accessRestrictionOption !== 'nosso'),
            };

            if ($scope.appInstall.upstreamUri) {
                data.upstreamUri = $scope.appInstall.upstreamUri;
                data.upstreamUri = data.upstreamUri.replace(/\/$/, '');
            }

            var domains = [];
            domains.push({ subdomain: data.subdomain, domain: data.domain, type: 'primary' });
            var canInstall = true;

            async.eachSeries(domains, function (domain, callback) {
                if (data.overwriteDns) return callback();

                Client.checkDNSRecords(domain.domain, domain.subdomain, function (error, result) {
                    if (error) return callback(error);

                    var message;
                    if (result.error) {
                        if (result.error.reason === ERROR.ACCESS_DENIED) {
                            message = 'DNS credentials for ' + domain.domain + ' are invalid. Update it in Domains & Certs view';
                            if (domain.type === 'primary') {
                                $scope.appInstall.error.location = message;
                            } else {
                                $scope.appInstall.error.secondaryDomain = message;
                            }
                        } else {
                            if (domain.type === 'primary') {
                                $scope.appInstall.error.location = result.error.message;
                            } else {
                                $scope.appInstall.error.secondaryDomain = message;
                            }
                        }
                        canInstall = false;
                    } else if (result.needsOverwrite) {
                        message = 'DNS Record already exists. Confirm that the domain is not in use for services external to Cloudron';
                        if (data.type === 'primary') {
                            $scope.appInstall.error.location = message;
                        } else {
                            $scope.appInstall.error.secondaryDomain = message;
                        }
                        $scope.appInstall.needsOverwrite = true;
                        canInstall = false;
                    }

                    callback();
                });
            }, function (error) {
                if (error) {
                    $scope.appInstall.busy = false;
                    return Client.error(error);
                }

                if (!canInstall) {
                    $scope.appInstall.busy = false;
                    $scope.appInstallForm.location.$setPristine();
                    $('#appInstallLocationInput').focus();
                    return;
                }

                Client.installApp($scope.appInstall.app.id, $scope.appInstall.app.manifest, data, function (error, newAppId) {
                    if (error) {
                        var errorMessage = error.message.toLowerCase();

                        if (error.statusCode === 402) {
                            $scope.appInstall.state = 'subscriptionRequired';
                            $scope.appInstall.subscriptionErrorMesssage = error.message;
                            $('#collapseMediaLinksCarousel').collapse('hide');
                            $('#collapseResourceConstraint').collapse('hide');
                            $('#collapseInstallForm').collapse('hide');
                            $('#collapseSubscriptionRequired').collapse('show');
                        } else if (error.statusCode === 409) {
                            if (errorMessage.indexOf('port') !== -1) {
                                $scope.appInstall.error.port = error.message;
                            } else if (errorMessage.indexOf('location') !== -1) {
                                if (errorMessage.indexOf('primary') !== -1) {
                                    $scope.appInstall.error.location = error.message;
                                    $scope.appInstallForm.location.$setPristine();
                                    $('#appInstallLocationInput').focus();
                                } else {
                                    $scope.appInstall.error.secondaryDomain = error.message;
                                }
                            } else {
                                $scope.appInstall.error.other = error.message;
                            }
                        } else if (error.statusCode === 400) {
                            $scope.appInstall.error.other = error.message;
                        } else {
                            $scope.appInstall.error.other = error.message;
                        }

                        $scope.appInstall.busy = false;
                        return;
                    }

                    $scope.appInstall.busy = false;

                    // stash new app id for later
                    $scope.appInstall.app.id = newAppId;

                    // we track the postinstall confirmation for the current user's browser
                    // TODO later we might want to have a notification db to track the state across admins and browsers
                    if ($scope.appInstall.app.manifest.postInstallMessage) {
                        localStorage['confirmPostInstall_' + $scope.appInstall.app.id] = true;
                    }

                    $scope.showView('/apps');
                });
            });
        }
    };

    $scope.appNotFound = {
        appId: '',
        version: ''
    };

    $scope.appstoreLogin = {
        busy: false,
        error: {},
        email: '',
        password: '',
        totpToken: '',
        setupType: 'login',
        termsAccepted: false,
        setupToken: '',

        submit: function () {
            $scope.appstoreLogin.error = {};
            $scope.appstoreLogin.busy = true;

            var func = $scope.appstoreLogin.setupToken ? Client.registerCloudronWithSetupToken.bind(null, $scope.appstoreLogin.setupToken) : Client.registerCloudron.bind(null, $scope.appstoreLogin.email, $scope.appstoreLogin.password, $scope.appstoreLogin.totpToken, $scope.appstoreLogin.setupType === 'register');
            func(function (error) {
                if (error) {
                    $scope.appstoreLogin.busy = false;

                    if (error.statusCode === 409) {
                        $scope.appstoreLogin.error.email = 'An account with this email already exists';
                        $scope.appstoreLogin.password = '';
                        $scope.appstoreSignupForm.email.$setPristine();
                        $scope.appstoreSignupForm.password.$setPristine();
                        $('#inputAppstoreLoginEmail').focus();
                    } else if (error.statusCode === 412) {
                        if (error.message.indexOf('TOTP token missing') !== -1) {
                            $scope.appstoreLogin.error.totpToken = 'A 2FA token is required';
                            setTimeout(function () { $('#inputAppstoreLoginTotpToken').focus(); }, 0);
                        } else if (error.message.indexOf('TOTP token invalid') !== -1) {
                            $scope.appstoreLogin.error.totpToken = 'Wrong 2FA token';
                            $scope.appstoreLogin.totpToken = '';
                            setTimeout(function () { $('#inputAppstoreLoginTotpToken').focus(); }, 0);
                        } else {
                            $scope.appstoreLogin.error.loginPassword = 'Wrong email or password';
                            $scope.appstoreLogin.password = '';
                            $('#inputAppstoreLoginPassword').focus();
                            $scope.appstoreLoginForm.password.$setPristine();
                        }
                    } else if (error.statusCode === 424) {
                        if (error.message === 'wrong user') {
                            $scope.appstoreLogin.error.generic = 'Wrong cloudron.io account';
                            $scope.appstoreLogin.email = '';
                            $scope.appstoreLogin.password = '';
                            $scope.appstoreLoginForm.email.$setPristine();
                            $scope.appstoreLoginForm.password.$setPristine();
                            $scope.appstoreSignupForm.email.$setPristine();
                            $scope.appstoreSignupForm.password.$setPristine();
                            $('#inputAppstoreLoginEmail').focus();
                        } else {
                            console.error(error);
                            $scope.appstoreLogin.error.generic = error.message;
                        }
                    } else if (error.statusCode === 402) {
                        $scope.appstoreLogin.error.setupToken = 'Invalid or expired setup token';
                        $scope.appstoreLogin.setupToken = '';
                        $scope.appstoreSetupTokenForm.setupToken.$setPristine();
                        $('#inputAppstoreSetupToken').focus();
                    } else {
                        console.error(error);
                        $scope.appstoreLogin.error.generic = error.message || 'Please retry later';
                    }

                    return;
                }

                // do a full re-init of the view now that we have a subscription
                init();
            });
        }
    };

    // TODO does not support testing apps in search
    $scope.search = function () {
        if (!$scope.searchString) return $scope.showCategory($scope.cachedCategory);

        $scope.category = '';

        Client.getAppstoreAppsFast(function (error, apps) {
            if (error) return $timeout($scope.search, 1000);

            var token = $scope.searchString.toUpperCase();

            $scope.popularApps = [];
            $scope.apps = apps.filter(function (app) {
                // on searches we give highe priority if title or tagline matches
                app.priority = 0;

                if (app.manifest.title.toUpperCase().indexOf(token) !== -1) {
                    app.priority = 2;
                    return true;
                }
                if (app.manifest.tagline.toUpperCase().indexOf(token) !== -1) {
                    app.priority = 1;
                    return true;
                }
                if (app.manifest.id.toUpperCase().indexOf(token) !== -1) return true;
                if (app.manifest.description.toUpperCase().indexOf(token) !== -1) return true;
                if (app.manifest.tags.join().toUpperCase().indexOf(token) !== -1) return true;
                return false;
            });
        });
    };

    function filterForNewApps(apps) {
        var minApps = apps.length < 12 ? apps.length : 12; // prevent endless loop
        var tmp = [];
        var i = 0;

        do {
            var offset = moment().subtract(i++, 'days');
            tmp = apps.filter(function (app) { return moment(app.publishedAt).isAfter(offset); });
        } while(tmp.length < minApps);

        return tmp;
    }

    function filterForRecentlyUpdatedApps(apps) {
        var minApps = apps.length < 12 ? apps.length : 12; // prevent endless loop
        var tmp = [];
        var i = 0;

        do {
            var offset = moment().subtract(i++, 'days');
            tmp = apps.filter(function (app) { return moment(app.creationDate).isAfter(offset); }); // creationDate here is from appstore's appversions table
        } while(tmp.length < minApps);

        return tmp;
    }

    $scope.showCategory = function (category) {
        $scope.category = category;

        $scope.cachedCategory = $scope.category;

        Client.getAppstoreAppsFast(function (error, apps) {
            if (error) return $timeout($scope.showCategory.bind(null, category), 1000);

            if (!$scope.category) {
                $scope.apps = apps.slice(0).filter(function (app) { return !app.featured; }).sort(function (a1, a2) { return a1.manifest.title.localeCompare(a2.manifest.title); });
                $scope.popularApps = apps.slice(0).filter(function (app) { return app.featured; }).sort(function (a1, a2) { return a2.ranking - a1.ranking; });
            } else if ($scope.category === 'new') {
                $scope.apps = filterForNewApps(apps);
            } else if ($scope.category === 'recent') {
                $scope.apps = filterForRecentlyUpdatedApps(apps);
            } else {
                $scope.apps = apps.filter(function (app) {
                    return app.manifest.tags.some(function (tag) { return $scope.category.toUpperCase() === tag.toUpperCase(); }); // reverse sort;
                }).sort(function (a1, a2) { return a2.ranking - a1.ranking; });
            }

            // ensure we scroll to top
            document.getElementById('ng-view').scrollTop = 0;
        });
    };

    $scope.openSubscriptionSetup = function () {
        Client.getSubscription(function (error, subscription) {
            if (error) return console.error('Unable to get subscription.', error);

            Client.openSubscriptionSetup(subscription);
        });
    };

    $scope.showAppNotFound = function (appId, version) {
        $scope.appNotFound.appId = appId;
        $scope.appNotFound.version = version || 'latest';

        $('#appNotFoundModal').modal('show');
    };

    $scope.gotoApp = function (app) {
        $location.path('/appstore/' + app.manifest.id, false).search({ version : app.manifest.version });
    };

    $scope.openAppProxy = function () {
        $location.path('/appstore/io.cloudron.builtin.appproxy', false).search({});
    };

    $scope.applinksAdd = {
        error: {},
        busy: false,
        upstreamUri: '',
        label: '',
        tags: '',
        accessRestrictionOption: 'any',
        accessRestriction: { users: [], groups: [] },

        isAccessRestrictionValid: function () {
            return !!($scope.applinksAdd.accessRestriction.users.length || $scope.applinksAdd.accessRestriction.groups.length);
        },

        show: function () {
            $scope.applinksAdd.error = {};
            $scope.applinksAdd.busy = false;
            $scope.applinksAdd.upstreamUri = '';
            $scope.applinksAdd.label = '';
            $scope.applinksAdd.tags = '';

            $scope.applinksAddForm.$setUntouched();
            $scope.applinksAddForm.$setPristine();

            $('#applinksAddModal').modal('show');

            return false; // prevent propagation and default
        },

        submit: function () {
            if (!$scope.applinksAdd.upstreamUri) return;

            $scope.applinksAdd.busy = true;
            $scope.applinksAdd.error = {};

            var accessRestriction = null;
            if ($scope.applinksAdd.accessRestrictionOption === 'groups') {
                accessRestriction = { users: [], groups: [] };
                accessRestriction.users = $scope.applinksAdd.accessRestriction.users.map(function (u) { return u.id; });
                accessRestriction.groups = $scope.applinksAdd.accessRestriction.groups.map(function (g) { return g.id; });
            }

            var data = {
                upstreamUri: $scope.applinksAdd.upstreamUri,
                label: $scope.applinksAdd.label,
                accessRestriction: accessRestriction,
                tags: $scope.applinksAdd.tags.split(' ').map(function (t) { return t.trim(); }).filter(function (t) { return !!t; })
            };

            Client.addApplink(data, function (error) {
                $scope.applinksAdd.busy = false;

                if (error && error.statusCode === 400 && error.message.includes('upstreamUri')) {
                    $scope.applinksAdd.error.upstreamUri = error.message;
                    $scope.applinksAddForm.$setUntouched();
                    $scope.applinksAddForm.$setPristine();
                    return;
                }
                if (error) return console.error('Failed to add applink', error);

                $scope.showView('/apps');
            });
        }
    };

    function hashChangeListener() {
        // event listener is called from DOM not angular, need to use $apply
        $scope.$apply(function () {
            var appId = $location.path().slice('/appstore/'.length);
            var version = $location.search().version;

            if (appId) {
                Client.getAppstoreAppByIdAndVersion(appId, version || 'latest', function (error, result) {
                    if (error) {
                        $scope.showAppNotFound(appId, version);
                        console.error(error);
                        return;
                    }

                    $scope.appInstall.show(result);
                });
            } else {
                $scope.appInstall.reset();
            }
        });
    }

    function fetchUsers() {
        Client.getAllUsers(function (error, users) {
            if (error) {
                console.error(error);
                return $timeout(fetchUsers, 5000);
            }

            $scope.users = users;
        });
    }

    function fetchGroups() {
        Client.getGroups(function (error, groups) {
            if (error) {
                console.error(error);
                return $timeout(fetchGroups, 5000);
            }

            $scope.groups = groups;
        });
    }

    function fetchMemory() {
        Client.memory(function (error, memory) {
            if (error) {
                console.error(error);
                return $timeout(fetchMemory, 5000);
            }

            $scope.memory = memory;
        });
    }

    function getSubscription(callback) {
        var validSubscription = false;

        Client.getSubscription(function (error, subscription) {
            if (error) {
                if (error.statusCode === 412) { // not registered yet
                    validSubscription = false;
                } else if (error.statusCode === 402) { // invalid token, license error
                    validSubscription = false;
                } else { // 424/external error?
                    return callback(error);
                }
            } else {
                validSubscription = true;
                $scope.subscription = subscription;
            }

            // clear busy state when a login/signup was performed
            $scope.appstoreLogin.busy = false;

            // also update the root controller status
            if ($scope.$parent) $scope.$parent.updateSubscriptionStatus();

            callback(null, validSubscription);
        });
    }

    function init() {
        Client.getAppstoreAppsFast(function (error) {
            if (error && error.statusCode === 402) {
                $scope.validSubscription = false;
                $scope.ready = true;
                return;
            } else if (error) {
                console.error('Failed to get apps. Will retry.', error);
                $timeout(init, 1000);
                return;
            }

            $scope.showCategory('');

            getSubscription(function (error, validSubscription) {
                if (error) console.error('Failed to get subscription.', error);

                // autofocus login
                if (!validSubscription) setTimeout(function () { $('[name=appstoreLoginForm]').find('[autofocus]:first').focus(); }, 1000);

                $scope.validSubscription = validSubscription;
                $scope.ready = true;

                // refresh everything in background
                Client.getAppstoreApps(function (error) { if (error) console.error('Failed to fetch apps.', error); });
                Client.refreshConfig(); // refresh domain, user, group limit etc
                fetchUsers();
                fetchGroups();
                fetchMemory();

                // domains is required since we populate the dropdown with domains[0]
                Client.getDomains(function (error, result) {
                    if (error) return console.error('Error getting domains.', error);

                    $scope.domains = result;

                    // show install app dialog immediately if an app id was passed in the query
                    // hashChangeListener calls $apply, so make sure we don't double digest here
                    setTimeout(hashChangeListener, 1);

                    setTimeout(function () { $('#appstoreSearch').focus(); }, 1);
                });
            });
        });
    }

    Client.onReady(init);

    $('#appInstallModal').on('hidden.bs.modal', function () {
        // clear the appid and version in the search bar when dialog is cancelled
        $scope.$apply(function () {
            $location.path('/appstore', false).search({ }); // 'false' means do not reload
        });
    });

    window.addEventListener('hashchange', hashChangeListener);

    $scope.$on('$destroy', function handler() {
        window.removeEventListener('hashchange', hashChangeListener);
    });

    // setup all the dialog focus handling
    ['appInstallModal'].forEach(function (id) {
        $('#' + id).on('shown.bs.modal', function () {
            $(this).find('[autofocus]:first').focus();
        });
    });

    $('.modal-backdrop').remove();
}]);