define([
    'jquery',
    '/api/config',
    '/customize/application_config.js',
    '/bower_components/chainpad-crypto/crypto.js',
    '/common/toolbar.js',
    '/bower_components/nthen/index.js',
    '/common/sframe-common.js',
    '/common/hyperscript.js',
    '/customize/messages.js',
    '/common/common-interface.js',
    '/common/common-ui-elements.js',
    '/common/common-util.js',
    '/common/common-hash.js',
    '/common/common-signing-keys.js',
    '/support/ui.js',

    '/lib/datepicker/flatpickr.js',
    '/bower_components/tweetnacl/nacl-fast.min.js',

    'css!/lib/datepicker/flatpickr.min.css',
    'css!/bower_components/bootstrap/dist/css/bootstrap.min.css',
    'css!/bower_components/components-font-awesome/css/font-awesome.min.css',
    'less!/admin/app-admin.less',
], function (
    $,
    ApiConfig,
    AppConfig,
    Crypto,
    Toolbar,
    nThen,
    SFCommon,
    h,
    Messages,
    UI,
    UIElements,
    Util,
    Hash,
    Keys,
    Support,
    Flatpickr
    )
{
    var APP = {
        'instanceStatus': {}
    };

    var Nacl = window.nacl;
    var common;
    var sFrameChan;

    var categories = {
        'general': [ // Msg.admin_cat_general
            'cp-admin-flush-cache',
            'cp-admin-update-limit',
            'cp-admin-archive',
            'cp-admin-unarchive',
            'cp-admin-registration',
            'cp-admin-email'
        ],
        'quota': [ // Msg.admin_cat_quota
            'cp-admin-defaultlimit',
            'cp-admin-setlimit',
            'cp-admin-getquota',
            'cp-admin-getlimits',
        ],
        'stats': [ // Msg.admin_cat_stats
            'cp-admin-refresh-stats',
            'cp-admin-active-sessions',
            'cp-admin-active-pads',
            'cp-admin-open-files',
            'cp-admin-registered',
            'cp-admin-disk-usage',
        ],
        'support': [ // Msg.admin_cat_support
            'cp-admin-support-list',
            'cp-admin-support-init',
            'cp-admin-support-priv',
        ],
        'broadcast': [ // Msg.admin_cat_broadcast
            'cp-admin-maintenance',
            'cp-admin-survey',
            'cp-admin-broadcast',
        ],
        'performance': [ // Msg.admin_cat_performance
            'cp-admin-refresh-performance',
            'cp-admin-performance-profiling',
        ],
        'network': [ // Msg.admin_cat_network
            'cp-admin-update-available',
            'cp-admin-checkup',
            'cp-admin-block-daily-check',
            'cp-admin-provide-aggregate-statistics',
            'cp-admin-list-my-instance',
            'cp-admin-consent-to-contact',
            'cp-admin-remove-donate-button',
        ],
    };

    var create = {};

    var keyToCamlCase = function (key) {
        return key.replace(/-([a-z])/g, function (g) { return g[1].toUpperCase(); });
    };

    var makeBlock = function (key, addButton) { // Title, Hint, maybeButton
        // Convert to camlCase for translation keys
        var safeKey = keyToCamlCase(key);
        var $div = $('<div>', {'class': 'cp-admin-' + key + ' cp-sidebarlayout-element'});
        $('<label>').text(Messages['admin_'+safeKey+'Title'] || key).appendTo($div);
        $('<span>', {'class': 'cp-sidebarlayout-description'})
            .text(Messages['admin_'+safeKey+'Hint'] || 'Coming soon...').appendTo($div);
        if (addButton) {
            $('<button>', {
                'class': 'btn btn-primary'
            }).text(Messages['admin_'+safeKey+'Button'] || safeKey).appendTo($div);
        }
        return $div;
    };
    create['update-limit'] = function () {
        var key = 'update-limit';
        var $div = makeBlock(key, true); // Msg.admin_updateLimitHint, .admin_updateLimitTitle, .admin_updateLimitButton
        $div.find('button').click(function () {
            sFrameChan.query('Q_UPDATE_LIMIT', null, function (e, res) {
                if (e || (res && res.error)) { return void console.error(e || res.error); }
                UI.alert(Messages.admin_updateLimitDone || 'done');
            });
        });
        return $div;
    };
    create['flush-cache'] = function () {
        var key = 'flush-cache';
        var $div = makeBlock(key, true); // Msg.admin_flushCacheHint, .admin_flushCacheTitle, .admin_flushCacheButton
        var called = false;
        $div.find('button').click(function () {
            if (called) { return; }
            called = true;
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'FLUSH_CACHE',
            }, function (e, data) {
                called = false;
                UI.alert(data ? Messages.admin_flushCacheDone || 'done' : 'error' + e);
            });
        });
        return $div;
    };

    var archiveForm = function (archive, $div, $button) {
        var label = h('label', { for: 'cp-admin-archive' }, Messages.admin_archiveInput);
        var input = h('input#cp-admin-archive', {
            type: 'text'
        });

        var label2 = h('label.cp-admin-pw', {
            for: 'cp-admin-archive-pw'
        }, Messages.admin_archiveInput2);
        var input2 = UI.passwordInput({
            id: 'cp-admin-archive-pw',
            placeholder: Messages.login_password
        });
        var $pw = $(input2);
        $pw.addClass('cp-admin-pw');
        var $pwInput = $pw.find('input');


        $button.before(h('div.cp-admin-setlimit-form', [
            label,
            input,
            label2,
            input2
        ]));

        $div.addClass('cp-admin-nopassword');

        var parsed;
        var $input = $(input).on('keypress change paste', function () {
            setTimeout(function () {
                $input.removeClass('cp-admin-inval');
                var val = $input.val().trim();
                if (!val) {
                    $div.toggleClass('cp-admin-nopassword', true);
                    return;
                }

                parsed = Hash.isValidHref(val);
                $pwInput.val('');

                if (!parsed || !parsed.hashData) {
                    $div.toggleClass('cp-admin-nopassword', true);
                    return void $input.addClass('cp-admin-inval');
                }

                var pw = parsed.hashData.version !== 3 && parsed.hashData.password;
                $div.toggleClass('cp-admin-nopassword', !pw);
            });
        });
        $pw.on('keypress change', function () {
            setTimeout(function () {
                $pw.toggleClass('cp-admin-inval', !$pwInput.val());
            });
        });

        var clicked = false;
        $button.click(function () {
            if (!parsed || !parsed.hashData) {
                UI.warn(Messages.admin_archiveInval);
                return;
            }
            var pw = parsed.hashData.password ? $pwInput.val() : undefined;
            var channel;
            if (parsed.hashData.version === 3) {
                channel = parsed.hashData.channel;
            } else {
                var secret = Hash.getSecrets(parsed.type, parsed.hash, pw);
                channel = secret && secret.channel;
            }

            if (!channel) {
                UI.warn(Messages.admin_archiveInval);
                return;
            }

            if (clicked) { return; }
            clicked = true;

            nThen(function (waitFor) {
                if (!archive) { return; }
                common.getFileSize(channel, waitFor(function (err, size) {
                    if (!err && size === 0) {
                        clicked = false;
                        waitFor.abort();
                        return void UI.warn(Messages.admin_archiveInval);
                    }
                }), true);
            }).nThen(function () {
                sFrameChan.query('Q_ADMIN_RPC', {
                    cmd: archive ? 'ARCHIVE_DOCUMENT' : 'RESTORE_ARCHIVED_DOCUMENT',
                    data: channel
                }, function (err, obj) {
                    var e = err || (obj && obj.error);
                    clicked = false;
                    if (e) {
                        UI.warn(Messages.error);
                        console.error(e);
                        return;
                    }
                    UI.log(archive ? Messages.archivedFromServer : Messages.restoredFromServer);
                    $input.val('');
                    $pwInput.val('');
                });
            });
        });
    };

    create['archive'] = function () {
        var key = 'archive';
        var $div = makeBlock(key, true); // Msg.admin_archiveHint, .admin_archiveTitle, .admin_archiveButton
        var $button = $div.find('button');
        archiveForm(true, $div, $button);
        return $div;
    };
    create['unarchive'] = function () {
        var key = 'unarchive';
        var $div = makeBlock(key, true); // Msg.admin_unarchiveHint, .admin_unarchiveTitle, .admin_unarchiveButton
        var $button = $div.find('button');
        archiveForm(false, $div, $button);
        return $div;
    };

    create['registration'] = function () {
        var key = 'registration';
        var $div = makeBlock(key); // Msg.admin_registrationHint, .admin_registrationTitle, .admin_registrationButton

        var state = APP.instanceStatus.restrictRegistration;
        var $cbox = $(UI.createCheckbox('cp-settings-' + key,
            Messages.admin_registrationTitle,
            state, { label: { class: 'noTitle' } }));
        var spinner = UI.makeSpinner($cbox);
        var $checkbox = $cbox.find('input').on('change', function() {
            spinner.spin();
            var val = $checkbox.is(':checked') || false;
            $checkbox.attr('disabled', 'disabled');
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['RESTRICT_REGISTRATION', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    spinner.done();
                    state = APP.instanceStatus.restrictRegistration;
                    $checkbox[0].checked = state;
                    $checkbox.removeAttr('disabled');
                });
            });
        });
        $cbox.appendTo($div);

        return $div;
    };

    var makeAdminCheckbox = function (data) {
        return function () {
            var state = data.getState();
            var key = data.key;
            var $div = makeBlock(key);

            var labelKey = 'admin_' + keyToCamlCase(key) + 'Label';
            var titleKey = 'admin_' + keyToCamlCase(key) + 'Title';
            var $cbox = $(UI.createCheckbox('cp-admin-' + key,
                Messages[labelKey] || Messages[titleKey],
                state, { label: { class: 'noTitle' } }));
            var spinner = UI.makeSpinner($cbox);
            var $checkbox = $cbox.find('input').on('change', function() {
                spinner.spin();
                var val = $checkbox.is(':checked') || false;
                $checkbox.attr('disabled', 'disabled');
                data.query(val, function (state) {
                    spinner.done();
                    $checkbox[0].checked = state;
                    $checkbox.removeAttr('disabled');
                });
            });
            $cbox.appendTo($div);
            return $div;
        };
    };

    // Msg.admin_registrationHint, .admin_registrationTitle, .admin_registrationButton
    create['registration'] = makeAdminCheckbox({
        key: 'registration',
        getState: function () {
            return APP.instanceStatus.restrictRegistration;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['RESTRICT_REGISTRATION', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.restrictRegistration);
                });
            });
        },
    });

    create['email'] = function () {
        var key = 'email';
        var $div = makeBlock(key, true); // Msg.admin_emailHint, Msg.admin_emailTitle, Msg.admin_emailButton
        var $button = $div.find('button');

        var input = h('input', {
            type: 'email',
            value: ApiConfig.adminEmail || ''
        });
        var $input = $(input);
        var innerDiv = h('div.cp-admin-setlimit-form', input);
        var spinner = UI.makeSpinner($(innerDiv));

        $button.click(function () {
            if (!$input.val()) { return; }
            spinner.spin();
            $button.attr('disabled', 'disabled');
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['SET_ADMIN_EMAIL', [$input.val()]]
            }, function (e, response) {
                $button.removeAttr('disabled');
                if (e || response.error) {
                    UI.warn(Messages.error);
                    $input.val('');
                    console.error(e, response);
                    spinner.hide();
                    return;
                }
                spinner.done();
                UI.log(Messages.saved);
            });
        });

        $button.before(innerDiv);

        return $div;
    };

    var getPrettySize = UIElements.prettySize;

    create['defaultlimit'] = function () {
        var key = 'defaultlimit';
        var $div = makeBlock(key); // Msg.admin_defaultlimitHint, .admin_defaultlimitTitle
        var _limit = APP.instanceStatus.defaultStorageLimit;
        var _limitMB = Util.bytesToMegabytes(_limit);
        var limit = getPrettySize(_limit);
        var newLimit = h('input', {type: 'number', min: 0, value: _limitMB});
        var set = h('button.btn.btn-primary', Messages.admin_setlimitButton);
        $div.append(h('div', [
            h('span.cp-admin-defaultlimit-value', Messages._getKey('admin_limit', [limit])),
            h('div.cp-admin-setlimit-form', [
                h('label', Messages.admin_defaultLimitMB),
                newLimit,
                h('nav', [set])
            ])
        ]));

        UI.confirmButton(set, {
            classes: 'btn-primary',
            multiple: true,
            validate: function () {
                var l = parseInt($(newLimit).val());
                if (isNaN(l)) { return false; }
                return true;
            }
        }, function () {
            var lMB = parseInt($(newLimit).val()); // Megabytes
            var l = lMB * 1024 * 1024; // Bytes
            var data = [l];
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['UPDATE_DEFAULT_STORAGE', data]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    return void console.error(e, response);
                }
                var limit = getPrettySize(l);
                $div.find('.cp-admin-defaultlimit-value').text(Messages._getKey('admin_limit', [limit]));
            });
        });
        return $div;
    };
    create['getlimits'] = function () {
        var key = 'getlimits';
        var $div = makeBlock(key); // Msg.admin_getlimitsHint, .admin_getlimitsTitle
        APP.refreshLimits = function () {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'GET_LIMITS',
            }, function (e, data) {
                if (e) { return; }
                if (!Array.isArray(data) || !data[0]) { return; }

                $div.find('.cp-admin-all-limits').remove();

                var obj = data[0];
                if (obj && (obj.message || obj.location)) {
                    delete obj.message;
                    delete obj.location;
                }
                var list = Object.keys(obj).sort(function (a, b) {
                    return obj[a].limit > obj[b].limit;
                });

                var compact = list.length > 10;

                var content = list.map(function (key) {
                    var user = obj[key];
                    var limit = getPrettySize(user.limit);
                    var title = Messages._getKey('admin_limit', [limit]) + ', ' +
                                Messages._getKey('admin_limitPlan', [user.plan]) + ', ' +
                                Messages._getKey('admin_limitNote', [user.note]);

                    var keyEl = h('code.cp-limit-key', key);
                    $(keyEl).click(function () {
                        $('.cp-admin-setlimit-form').find('.cp-setlimit-key').val(key);
                        $('.cp-admin-setlimit-form').find('.cp-setlimit-quota').val(Math.floor(user.limit / 1024 / 1024));
                        $('.cp-admin-setlimit-form').find('.cp-setlimit-note').val(user.note);
                    });
                    if (compact) {
                        return h('tr.cp-admin-limit', {
                            title: title
                        }, [
                            h('td', keyEl),
                            h('td.limit', Messages._getKey('admin_limit', [limit])),
                            h('td.plan', Messages._getKey('admin_limitPlan', [user.plan])),
                            h('td.note', Messages._getKey('admin_limitNote', [user.note]))
                        ]);
                    }
                    return h('li.cp-admin-limit', [
                        keyEl,
                        h('ul.cp-limit-data', [
                            h('li.limit', Messages._getKey('admin_limit', [limit])),
                            h('li.plan', Messages._getKey('admin_limitPlan', [user.plan])),
                            h('li.note', Messages._getKey('admin_limitNote', [user.note]))
                        ])
                    ]);
                });
                if (compact) { return $div.append(h('table.cp-admin-all-limits', content)); }
                $div.append(h('ul.cp-admin-all-limits', content));
            });
        };
        APP.refreshLimits();
        return $div;
    };

    create['setlimit'] = function () {
        var key = 'setlimit';
        var $div = makeBlock(key); // Msg.admin_setlimitHint, .admin_setlimitTitle

        var user = h('input.cp-setlimit-key');
        var $key = $(user);
        var limit = h('input.cp-setlimit-quota', {type: 'number', min: 0, value: 0});
        var note = h('input.cp-setlimit-note');
        var remove = h('button.btn.btn-danger', Messages.fc_remove);
        var set = h('button.btn.btn-primary', Messages.admin_setlimitButton);
        var form = h('div.cp-admin-setlimit-form', [
            h('label', Messages.admin_limitUser),
            user,
            h('label', Messages.admin_limitMB),
            limit,
            h('label', Messages.admin_limitSetNote),
            note,
            h('nav', [set, remove])
        ]);

        var getValues = function () {
            var key = $key.val();
            var _limit = parseInt($(limit).val());
            var _note = $(note).val();
            if (key.length !== 44) {
                try {
                    var u = Keys.parseUser(key);
                    if (!u.domain || !u.user || !u.pubkey) {
                        return void UI.warn(Messages.admin_invalKey);
                    }
                } catch (e) {
                    return void UI.warn(Messages.admin_invalKey);
                }
            }
            if (isNaN(_limit) || _limit < 0) {
                return void UI.warn(Messages.admin_invalLimit);
            }
            return {
                key: key,
                data: {
                    limit: _limit * 1024 * 1024,
                    note: _note,
                    plan: 'custom'
                }
            };
        };

        UI.confirmButton(remove, {
            classes: 'btn-danger',
            multiple: true,
            validate: function () {
                var obj = getValues();
                if (!obj || !obj.key) { return false; }
                return true;
            }
        }, function () {
            var obj = getValues();
            var data = [obj.key];
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['RM_QUOTA', data]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                    return;
                }
                APP.refreshLimits();
                $key.val('');
            });
        });

        $(set).click(function () {
            var obj = getValues();
            if (!obj || !obj.key) { return; }
            var data = [obj.key, obj.data];
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['SET_QUOTA', data]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                    return;
                }
                APP.refreshLimits();
                $key.val('');
            });
        });

        $div.append(form);
        return $div;
    };

    create['getquota'] = function () {
        var key = 'getquota';
        var $div = makeBlock(key, true); // Msg.admin_getquotaHint, .admin_getquotaTitle, .admin_getquotaButton

        var input = h('input#cp-admin-getquota', {
            type: 'text'
        });
        var $input = $(input);

        var $button = $div.find('button');
        $button.before(h('div.cp-admin-setlimit-form', [
            input,
        ]));

        $button.click(function () {
            var val = $input.val();
            if (!val || !val.trim()) { return; }
            var key = Keys.canonicalize(val);
            if (!key) { return; }
            $input.val('');
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'GET_USER_TOTAL_SIZE',
                data: key
            }, function (e, obj) {
                if (e || (obj && obj.error)) {
                    console.error(e || obj.error);
                    return void UI.warn(Messages.error);
                }
                var size = Array.isArray(obj) && obj[0];
                if (typeof(size) !== "number") { return; }
                UI.alert(getPrettySize(size));
            });
        });

        return $div;
    };

    var onRefreshStats = Util.mkEvent();

    create['refresh-stats'] = function () {
        var key = 'refresh-stats';
        var $div = $('<div>', {'class': 'cp-admin-' + key + ' cp-sidebarlayout-element'});
        var $btn = $(h('button.btn.btn-primary', Messages.oo_refresh));
        $btn.click(function () {
            onRefreshStats.fire();
        });
        $div.append($btn);
        return $div;
    };

    create['active-sessions'] = function () {
        var key = 'active-sessions';
        var $div = makeBlock(key); // Msg.admin_activeSessionsHint, .admin_activeSessionsTitle
        var onRefresh = function () {
            $div.find('pre').remove();
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ACTIVE_SESSIONS',
            }, function (e, data) {
                var total = data[0];
                var ips = data[1];
                $div.find('pre').remove();
                $div.append(h('pre', total + ' (' + ips + ')'));
            });
        };
        onRefresh();
        onRefreshStats.reg(onRefresh);
        return $div;
    };
    create['active-pads'] = function () {
        var key = 'active-pads';
        var $div = makeBlock(key); // Msg.admin_activePadsHint, .admin_activePadsTitle
        var onRefresh = function () {
            $div.find('pre').remove();
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ACTIVE_PADS',
            }, function (e, data) {
                console.log(e, data);
                $div.find('pre').remove();
                $div.append(h('pre', String(data)));
            });
        };
        onRefresh();
        onRefreshStats.reg(onRefresh);
        return $div;
    };
    create['open-files'] = function () {
        var key = 'open-files';
        var $div = makeBlock(key); // Msg.admin_openFilesHint, .admin_openFilesTitle
        var onRefresh = function () {
            $div.find('pre').remove();
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'GET_FILE_DESCRIPTOR_COUNT',
            }, function (e, data) {
                if (e || (data && data.error)) {
                    console.error(e, data);
                    $div.append(h('pre', {
                        style: 'text-decoration: underline',
                    }, String(e || data.error)));
                    return;
                }
                console.log(e, data);
                $div.find('pre').remove();
                $div.append(h('pre', String(data)));
            });
        };
        onRefresh();
        onRefreshStats.reg(onRefresh);
        return $div;
    };
    create['registered'] = function () {
        var key = 'registered';
        var $div = makeBlock(key); // Msg.admin_registeredHint, .admin_registeredTitle
        var onRefresh = function () {
            $div.find('pre').remove();
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'REGISTERED_USERS',
            }, function (e, data) {
                console.log(e, data);
                $div.find('pre').remove();
                $div.append(h('pre', String(data)));
            });
        };
        onRefresh();
        onRefreshStats.reg(onRefresh);
        return $div;
    };
    create['disk-usage'] = function () {
        var key = 'disk-usage';
        var $div = makeBlock(key, true); // Msg.admin_diskUsageHint, .admin_diskUsageTitle, .admin_diskUsageButton
        var called = false;
        $div.find('button').click(function () {
            $div.find('button').hide();
            if (called) { return; }
            called = true;
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'DISK_USAGE',
            }, function (e, data) {
                console.log(e, data);
                if (e) { return void console.error(e); }
                var obj = data[0];
                Object.keys(obj).forEach(function (key) {
                    var val = obj[key];
                    var unit = Util.magnitudeOfBytes(val);
                    if (unit === 'GB') {
                        obj[key] = Util.bytesToGigabytes(val) + ' GB';
                    } else if (unit === 'MB') {
                        obj[key] = Util.bytesToMegabytes(val) + ' MB';
                    } else {
                        obj[key] = Util.bytesToKilobytes(val) + ' KB';
                    }
                });
                $div.append(h('ul', Object.keys(obj).map(function (k) {
                    return h('li', [
                        h('strong', k === 'total' ? k : '/' + k),
                        ' : ',
                        obj[k]
                    ]);
                })));
            });
        });
        return $div;
    };

    var supportKey = ApiConfig.supportMailbox;
    var checkAdminKey = function (priv) {
        if (!supportKey) { return; }
        return Hash.checkBoxKeyPair(priv, supportKey);
    };

    create['support-list'] = function () {
        if (!supportKey || !APP.privateKey || !checkAdminKey(APP.privateKey)) { return; }
        var $container = makeBlock('support-list'); // Msg.admin_supportListHint, .admin_supportListTitle
        var $div = $(h('div.cp-support-container')).appendTo($container);

        var catContainer = h('div.cp-dropdown-container');
        var col1 = h('div.cp-support-column', h('h1', [
            h('span', Messages.admin_support_premium),
            h('span.cp-support-count'),
            h('button.btn.cp-support-column-button', Messages.admin_support_collapse)
        ]));
        var col2 = h('div.cp-support-column', h('h1', [
            h('span', Messages.admin_support_normal),
            h('span.cp-support-count'),
            h('button.btn.cp-support-column-button', Messages.admin_support_collapse)
        ]));
        var col3 = h('div.cp-support-column', h('h1', [
            h('span', Messages.admin_support_answered),
            h('span.cp-support-count'),
            h('button.btn.cp-support-column-button', Messages.admin_support_collapse)
        ]));
        var col4 = h('div.cp-support-column', h('h1', [
            h('span', Messages.admin_support_closed),
            h('span.cp-support-count'),
            h('button.btn.cp-support-column-button', Messages.admin_support_collapse)
        ]));
        var $col1 = $(col1), $col2 = $(col2), $col3 = $(col3), $col4 = $(col4);
        $div.append([
            //catContainer
            col1,
            col2,
            col3,
            col4
        ]);
        $div.find('.cp-support-column-button').click(function () {
            var $col = $(this).closest('.cp-support-column');
            $col.toggleClass('cp-support-column-collapsed');
            if ($col.hasClass('cp-support-column-collapsed')) {
                $(this).text(Messages.admin_support_open);
                $(this).toggleClass('btn-primary');
            } else {
                $(this).text(Messages.admin_support_collapse);
                $(this).toggleClass('btn-primary');
            }
        });
        var category = 'all';
        var $drop = APP.support.makeCategoryDropdown(catContainer, function (key) {
            category = key;
            if (key === 'all') {
                $div.find('.cp-support-list-ticket').show();
                return;
            }
            $div.find('.cp-support-list-ticket').hide();
            $div.find('.cp-support-list-ticket[data-cat="'+key+'"]').show();
        }, true);
        $drop.setValue('all');

        var metadataMgr = common.getMetadataMgr();
        var privateData = metadataMgr.getPrivateData();
        var cat = privateData.category || '';
        var linkedId = cat.indexOf('-') !== -1 && cat.slice(8);

        var hashesById = {};

        var getTicketData = function (id) {
            var t = hashesById[id];
            if (!Array.isArray(t) || !t.length) { return; }
            var ed = Util.find(t[0], ['content', 'msg', 'content', 'sender', 'edPublic']);
            // If one of their ticket was sent as a premium user, mark them as premium
            var premium = t.some(function (msg) {
                var _ed = Util.find(msg, ['content', 'msg', 'content', 'sender', 'edPublic']);
                if (ed !== _ed) { return; }
                return Util.find(msg, ['content', 'msg', 'content', 'sender', 'plan']);
            });
            var lastMsg = t[t.length - 1];
            var lastMsgEd = Util.find(lastMsg, ['content', 'msg', 'content', 'sender', 'edPublic']);
            return {
                lastMsg: lastMsg,
                time: Util.find(lastMsg, ['content', 'msg', 'content', 'time']),
                lastMsgEd: lastMsgEd,
                lastAdmin: lastMsgEd !== ed && ApiConfig.adminKeys.indexOf(lastMsgEd) !== -1,
                premium: premium,
                authorEd: ed,
                closed: Util.find(lastMsg, ['content', 'msg', 'type']) === 'CLOSE'
            };
        };

        var addClickHandler = function ($ticket) {
            $ticket.on('click', function () {
                $ticket.toggleClass('cp-support-open', true);
                $ticket.off('click');
            });
        };
        var makeOpenButton = function ($ticket) {
            var button = h('button.btn.btn-primary.cp-support-expand', Messages.admin_support_open);
            var collapse = h('button.btn.cp-support-collapse', Messages.admin_support_collapse);
            $(button).click(function () {
                $ticket.toggleClass('cp-support-open', true);
            });
            addClickHandler($ticket);
            $(collapse).click(function (e) {
                $ticket.toggleClass('cp-support-open', false);
                e.stopPropagation();
                setTimeout(function () {
                    addClickHandler($ticket);
                });
            });
            $ticket.find('.cp-support-title-buttons').prepend([button, collapse]);
            $ticket.append(h('div.cp-support-collapsed'));
        };
        var updateTicketDetails = function ($ticket, isPremium) {
            var $first = $ticket.find('.cp-support-message-from').first();
            var user = $first.find('span').first().html();
            var time = $first.find('.cp-support-message-time').text();
            var last = $ticket.find('.cp-support-message-from').last().find('.cp-support-message-time').text();
            var $c = $ticket.find('.cp-support-collapsed');
            var txtClass = isPremium ? ".cp-support-ispremium" : "";
            $c.html('').append([
                UI.setHTML(h('span'+ txtClass), user),
                h('span', [
                    h('b', Messages.admin_support_first),
                    h('span', time)
                ]),
                h('span', [
                    h('b', Messages.admin_support_last),
                    h('span', last)
                ])
            ]);

        };

        var sort = function (id1, id2) {
            var t1 = getTicketData(id1);
            var t2 = getTicketData(id2);
            if (!t1) { return 1; }
            if (!t2) { return -1; }
            /*
            // If one is answered and not the other, put the unanswered first
            if (t1.lastAdmin && !t2.lastAdmin) { return 1; }
            if (!t1.lastAdmin && t2.lastAdmin) { return -1; }
            */
            // Otherwise, sort them by time
            return t1.time - t2.time;
        };

        var _reorder = function () {
            var orderAnswered = Object.keys(hashesById).filter(function (id) {
                var d = getTicketData(id);
                return d && d.lastAdmin && !d.closed;
            }).sort(sort);
            var orderPremium = Object.keys(hashesById).filter(function (id) {
                var d = getTicketData(id);
                return d && d.premium && !d.lastAdmin && !d.closed;
            }).sort(sort);
            var orderNormal = Object.keys(hashesById).filter(function (id) {
                var d = getTicketData(id);
                return d && !d.premium && !d.lastAdmin && !d.closed;
            }).sort(sort);
            var orderClosed = Object.keys(hashesById).filter(function (id) {
                var d = getTicketData(id);
                return d && d.closed;
            }).sort(sort);
            var cols = [$col1, $col2, $col3, $col4];
            [orderPremium, orderNormal, orderAnswered, orderClosed].forEach(function (list, j) {
                list.forEach(function (id, i) {
                    var $t = $div.find('[data-id="'+id+'"]');
                    var d = getTicketData(id);
                    $t.css('order', i).appendTo(cols[j]);
                    updateTicketDetails($t, d.premium);
                });
                if (!list.length) {
                    cols[j].hide();
                } else {
                    cols[j].show();
                    cols[j].find('.cp-support-count').text(list.length);
                }
            });
        };
        var reorder = Util.throttle(_reorder, 150);

        var to = Util.throttle(function () {
            var $ticket = $div.find('.cp-support-list-ticket[data-id="'+linkedId+'"]');
            $ticket.addClass('cp-support-open');
            $ticket[0].scrollIntoView();
            linkedId = undefined;
        }, 200);

        // Register to the "support" mailbox
        common.mailbox.subscribe(['supportadmin'], {
            onMessage: function (data) {
                /*
                    Get ID of the ticket
                    If we already have a div for this ID
                        Push the message to the end of the ticket
                    If it's a new ticket ID
                        Make a new div for this ID
                */
                var msg = data.content.msg;
                var hash = data.content.hash;
                var content = msg.content;
                var id = content.id;
                var $ticket = $div.find('.cp-support-list-ticket[data-id="'+id+'"]');

                hashesById[id] = hashesById[id] || [];
                if (hashesById[id].indexOf(hash) === -1) {
                    hashesById[id].push(data);
                }

                if (msg.type === 'CLOSE') {
                    // A ticket has been closed by the admins...
                    if (!$ticket.length) { return; }
                    $ticket.addClass('cp-support-list-closed');
                    $ticket.append(APP.support.makeCloseMessage(content, hash));
                    reorder();
                    return;
                }
                if (msg.type !== 'TICKET') { return; }
                $ticket.removeClass('cp-support-list-closed');

                if (!$ticket.length) {
                    $ticket = APP.support.makeTicket($div, content, function (hideButton) {
                        // the ticket will still be displayed until the worker confirms its deletion
                        // so make it unclickable in the meantime
                        hideButton.setAttribute('disabled', true);
                        var error = false;
                        nThen(function (w) {
                            hashesById[id].forEach(function (d) {
                                common.mailbox.dismiss(d, w(function (err) {
                                    if (err) {
                                        error = true;
                                        console.error(err);
                                    }
                                }));
                            });
                        }).nThen(function () {
                            if (!error) {
                                $ticket.remove();
                                delete hashesById[id];
                                reorder();
                                return;
                            }
                            // if deletion failed then reactivate the button and warn
                            hideButton.removeAttribute('disabled');
                            // and show a generic error message
                            UI.alert(Messages.error);
                        });
                    });
                    makeOpenButton($ticket);
                    if (category !== 'all' && $ticket.attr('data-cat') !== category) {
                        $ticket.hide();
                    }
                }
                $ticket.append(APP.support.makeMessage(content, hash));
                reorder();

                if (linkedId) { to(); }
            }
        });
        return $container;
    };

    create['support-priv'] = function () {
        if (!supportKey || !APP.privateKey || !checkAdminKey(APP.privateKey)) { return; }

        var $div = makeBlock('support-priv', true); // Msg.admin_supportPrivHint, .admin_supportPrivTitle, .admin_supportPrivButton
        var $button = $div.find('button').click(function () {
            $button.remove();
            var $selectable = $(UI.dialog.selectable(APP.privateKey)).css({ 'max-width': '28em' });
            $div.append($selectable);
        });
        return $div;
    };
    create['support-init'] = function () {
        var $div = makeBlock('support-init'); // Msg.admin_supportInitHint, .admin_supportInitTitle
        if (!supportKey) {
            (function () {
                $div.append(h('p', Messages.admin_supportInitHelp));
                var button = h('button.btn.btn-primary', Messages.admin_supportInitGenerate);
                var $button = $(button).appendTo($div);
                $div.append($button);
                var spinner = UI.makeSpinner($div);
                $button.click(function () {
                    spinner.spin();
                    $button.attr('disabled', 'disabled');
                    var keyPair = Nacl.box.keyPair();
                    var pub = Nacl.util.encodeBase64(keyPair.publicKey);
                    var priv = Nacl.util.encodeBase64(keyPair.secretKey);
                    // Store the private key first. It won't be used until the decree is accepted.
                    sFrameChan.query("Q_ADMIN_MAILBOX", priv, function (err, obj) {
                        if (err || (obj && obj.error)) {
                            console.error(err || obj.error);
                            UI.warn(Messages.error);
                            spinner.hide();
                            return;
                        }
                        // Then send the decree
                        sFrameChan.query('Q_ADMIN_RPC', {
                            cmd: 'ADMIN_DECREE',
                            data: ['SET_SUPPORT_MAILBOX', [pub]]
                        }, function (e, response) {
                            $button.removeAttr('disabled');
                            if (e || response.error) {
                                UI.warn(Messages.error);
                                console.error(e, response);
                                spinner.hide();
                                return;
                            }
                            spinner.done();
                            UI.log(Messages.saved);
                            supportKey = pub;
                            APP.privateKey = priv;
                            $('.cp-admin-support-init').hide();
                            APP.$rightside.append(create['support-list']());
                            APP.$rightside.append(create['support-priv']());
                        });
                    });
                });
            })();
            return $div;
        }
        if (!APP.privateKey || !checkAdminKey(APP.privateKey)) {
            $div.append(h('p', Messages.admin_supportInitPrivate));

            var error = h('div.cp-admin-support-error');
            var input = h('input.cp-admin-add-private-key');
            var button = h('button.btn.btn-primary', Messages.admin_supportAddKey);

            if (APP.privateKey && !checkAdminKey(APP.privateKey)) {
                $(error).text(Messages.admin_supportAddError);
            }

            $div.append(h('div', [
                error,
                input,
                button
            ]));

            $(button).click(function () {
                var key = $(input).val();
                if (!checkAdminKey(key)) {
                    $(input).val('');
                    return void $(error).text(Messages.admin_supportAddError);
                }
                sFrameChan.query("Q_ADMIN_MAILBOX", key, function () {
                    APP.privateKey = key;
                    $('.cp-admin-support-init').hide();
                    APP.$rightside.append(create['support-list']());
                    APP.$rightside.append(create['support-priv']());
                });
            });
            return $div;
        }
        return;
    };

    var getApi = function (cb) {
        return function () {
            require(['/api/broadcast?'+ (+new Date())], function (Broadcast) {
                cb(Broadcast);
                setTimeout(function () {
                    try {
                        var ctx = require.s.contexts._;
                        var defined = ctx.defined;
                        Object.keys(defined).forEach(function (href) {
                            if (/^\/api\/broadcast\?[0-9]{13}/.test(href)) {
                                delete defined[href];
                                return;
                            }
                        });
                    } catch (e) {}
                });
            });
        };
    };

    // Update the lastBroadcastHash in /api/broadcast if we can do it.
    // To do so, find the last "BROADCAST_CUSTOM" in the current history and use the previous
    // message's hash.
    // If the last BROADCAST_CUSTOM has been deleted by an admin, we can use the most recent
    // message's hash.
    var checkLastBroadcastHash = function () {
        var deleted = [];

        require(['/api/broadcast?'+ (+new Date())], function (BCast) {
            var hash = BCast.lastBroadcastHash || '1'; // Truthy value if no lastKnownHash
            common.mailbox.getNotificationsHistory('broadcast', null, hash, function (e, msgs) {
                if (e) { return void console.error(e); }

                // No history, nothing to change
                if (!Array.isArray(msgs)) { return; }
                if (!msgs.length) { return; }

                var lastHash;
                var next = false;

                // Start from the most recent messages until you find a CUSTOM message and
                // check if it has been deleted
                msgs.reverse().some(function (data) {
                    var c = data.content;

                    // This is the hash we want to keep
                    if (next) {
                        if (!c || !c.hash) { return; }
                        lastHash = c.hash;
                        next = false;
                        return true;
                    }

                    // initialize with the most recent hash
                    if (!lastHash && c && c.hash) { lastHash = c.hash; }

                    var msg = c && c.msg;
                    if (!msg) { return; }

                    // Remember all deleted messages
                    if (msg.type === "BROADCAST_DELETE") {
                        deleted.push(Util.find(msg, ['content', 'uid']));
                    }

                    // Only check custom messages
                    if (msg.type !== "BROADCAST_CUSTOM") { return; }

                    // If the most recent CUSTOM message has been deleted, it means we don't
                    // need to keep any message and we can continue with lastHash as the most
                    // recent broadcast message.
                    if (deleted.indexOf(msg.uid) !== -1) { return true; }

                    // We just found the oldest message we want to keep, move one iteration
                    // further into the loop to get the next message's hash.
                    // If this is the end of the loop, don't bump lastBroadcastHash at all.
                    next = true;
                });

                // If we don't have to bump our lastBroadcastHash, abort
                if (next) { return; }

                // Otherwise, bump to lastHash
                console.warn('Updating last broadcast hash to', lastHash);
                sFrameChan.query('Q_ADMIN_RPC', {
                    cmd: 'ADMIN_DECREE',
                    data: ['SET_LAST_BROADCAST_HASH', [lastHash]]
                }, function (e, response) {
                    if (e || response.error) {
                        UI.warn(Messages.error);
                        console.error(e, response);
                        return;
                    }
                    console.log('lastBroadcastHash updated');
                });
            });
        });

    };

    create['broadcast'] = function () {
        var key = 'broadcast';
        var $div = makeBlock(key); // Msg.admin_broadcastHint, admin_broadcastTitle

        var form = h('div.cp-admin-broadcast-form');
        var $form = $(form).appendTo($div);

        var refresh = getApi(function (Broadcast) {
            var button = h('button.btn.btn-primary', Messages.admin_broadcastButton);
            var $button = $(button);
            var removeButton = h('button.btn.btn-danger', Messages.admin_broadcastCancel);
            var active = h('div.cp-broadcast-active', h('p', Messages.admin_broadcastActive));
            var $active = $(active);
            var activeUid;
            var deleted = [];

            // Render active message (if there is one)
            var hash = Broadcast.lastBroadcastHash || '1'; // Truthy value if no lastKnownHash
            common.mailbox.getNotificationsHistory('broadcast', null, hash, function (e, msgs) {
                if (e) { return void console.error(e); }
                if (!Array.isArray(msgs)) { return; }
                if (!msgs.length) {
                    $active.hide();
                }
                msgs.reverse().some(function (data) {
                    var c = data.content;
                    var msg = c && c.msg;
                    if (!msg) { return; }
                    if (msg.type === "BROADCAST_DELETE") {
                        deleted.push(Util.find(msg, ['content', 'uid']));
                    }
                    if (msg.type !== "BROADCAST_CUSTOM") { return; }
                    if (deleted.indexOf(msg.uid) !== -1) { return true; }

                    // We found an active custom message, show it
                    var el = common.mailbox.createElement(data);
                    var table = h('table.cp-broadcast-delete');
                    var $table = $(table);
                    var uid = Util.find(data, ['content', 'msg', 'uid']);
                    var time = Util.find(data, ['content', 'msg', 'content', 'time']);
                    var tr = h('tr', { 'data-uid': uid }, [
                        h('td', 'ID: '+uid),
                        h('td', new Date(time || 0).toLocaleString()),
                        h('td', el),
                        h('td.delete', removeButton),
                    ]);
                    $table.append(tr);
                    $active.append(table);
                    activeUid = uid;

                    return true;
                });
                if (!activeUid) { $active.hide(); }
            });

            // Custom message
            var container = h('div.cp-broadcast-container');
            var $container = $(container);
            var languages = Messages._languages;
            var keys = Object.keys(languages).sort();

            // Always keep the textarea ordered by language code
            var reorder = function () {
                $container.find('.cp-broadcast-lang').each(function (i, el) {
                    var $el = $(el);
                    var l = $el.attr('data-lang');
                    $el.css('order', keys.indexOf(l));
                });
            };

            // Remove a textarea
            var removeLang = function (l) {
                $container.find('.cp-broadcast-lang[data-lang="'+l+'"]').remove();

                var hasDefault = $container.find('.cp-broadcast-lang .cp-checkmark input:checked').length;
                if (!hasDefault) {
                    $container.find('.cp-broadcast-lang').first().find('.cp-checkmark input').prop('checked', 'checked');
                }
            };

            var getData = function () { return false; };
            var onPreview = function (l) {
                var data = getData();
                if (data === false) { return void UI.warn(Messages.error); }

                var msg = {
                    uid: Util.uid(),
                    type: 'BROADCAST_CUSTOM',
                    content: data
                };
                common.mailbox.onMessage({
                    lang: l,
                    type: 'broadcast',
                    content: {
                        msg: msg,
                        hash: 'LOCAL|' + JSON.stringify(msg).slice(0,58)
                    }
                }, function () {
                    UI.log(Messages.saved);
                });
            };

            // Add a textarea
            var addLang = function (l) {
                if ($container.find('.cp-broadcast-lang[data-lang="'+l+'"]').length) { return; }
                var preview = h('button.btn.btn-secondary', Messages.broadcast_preview);
                $(preview).click(function () {
                    onPreview(l);
                });
                var bcastDefault = Messages.broadcast_defaultLanguage;
                var first = !$container.find('.cp-broadcast-lang').length;
                var radio = UI.createRadio('broadcastDefault', null, bcastDefault, first, {
                    'data-lang': l,
                    label: {class: 'noTitle'}
                });
                $container.append(h('div.cp-broadcast-lang', { 'data-lang': l }, [
                    h('h4', languages[l]),
                    h('label', Messages.kanban_body),
                    h('textarea'),
                    radio,
                    preview
                ]));
                reorder();
            };

            // Checkboxes to select translations
            var boxes = keys.map(function (l) {
                var $cbox = $(UI.createCheckbox('cp-broadcast-custom-lang-'+l,
                    languages[l], false, { label: { class: 'noTitle' } }));
                var $check = $cbox.find('input').on('change', function () {
                    var c = $check.is(':checked');
                    if (c) { return void addLang(l); }
                    removeLang(l);
                });
                if (l === 'en') {
                    setTimeout(function () {
                        $check.click();
                    });
                }
                return $cbox[0];
            });

            // Extract form data
            getData = function () {
                var map = {};
                var defaultLanguage;
                var error = false;
                $container.find('.cp-broadcast-lang').each(function (i, el) {
                    var $el = $(el);
                    var l = $el.attr('data-lang');
                    if (!l) { error = true; return; }
                    var text = $el.find('textarea').val();
                    if (!text.trim()) { error = true; return; }
                    if ($el.find('.cp-checkmark input').is(':checked')) {
                        defaultLanguage = l;
                    }
                    map[l] = text;
                });
                if (!Object.keys(map).length) {
                    console.error('You must select at least one language');
                    return false;
                }
                if (error) {
                    console.error('One of the selected languages has no data');
                    return false;
                }
                return {
                    defaultLanguage: defaultLanguage,
                    content: map
                };
            };

            var send = function (data) {
                $button.prop('disabled', 'disabled');
                //data.time = +new Date(); // FIXME not used anymore?
                common.mailbox.sendTo('BROADCAST_CUSTOM', data, {}, function (err) {
                    if (err) {
                        $button.prop('disabled', '');
                        console.error(err);
                        return UI.warn(Messages.error);
                    }
                    UI.log(Messages.saved);
                    refresh();

                    checkLastBroadcastHash();
                });
            };

            $button.click(function () {
                var data = getData();
                if (data === false) { return void UI.warn(Messages.error); }
                send(data);
            });

            UI.confirmButton(removeButton, {
                classes: 'btn-danger',
            }, function () {
                if (!activeUid) { return; }
                common.mailbox.sendTo('BROADCAST_DELETE', {
                    uid: activeUid
                }, {}, function (err) {
                    if (err) { return UI.warn(Messages.error); }
                    UI.log(Messages.saved);
                    refresh();
                    checkLastBroadcastHash();
                });
            });

            // Make the form
            $form.empty().append([
                active,
                h('label', Messages.broadcast_translations),
                h('div.cp-broadcast-languages', boxes),
                container,
                h('div.cp-broadcast-form-submit', [
                    h('br'),
                    button
                ])
            ]);
        });
        refresh();

        return $div;
    };

    create['maintenance'] = function () {
        var key = 'maintenance';
        var $div = makeBlock(key); // Msg.admin_maintenanceHint, admin_maintenanceTitle

        var form = h('div.cp-admin-broadcast-form');
        var $form = $(form).appendTo($div);

        var refresh = getApi(function (Broadcast) {
            var button = h('button.btn.btn-primary', Messages.admin_maintenanceButton);
            var $button = $(button);
            var removeButton = h('button.btn.btn-danger', Messages.admin_maintenanceCancel);
            var active;

            if (Broadcast && Broadcast.maintenance) {
                var m = Broadcast.maintenance;
                if (m.start && m.end && m.end >= (+new Date())) {
                    active = h('div.cp-broadcast-active', [
                        UI.setHTML(h('p'), Messages._getKey('broadcast_maintenance', [
                            new Date(m.start).toLocaleString(),
                            new Date(m.end).toLocaleString(),
                        ])),
                        removeButton
                    ]);
                }
            }

            // Start and end date pickers
            var start = h('input');
            var end = h('input');
            var $start = $(start);
            var $end = $(end);
            var is24h = false;
            var dateFormat = "Y-m-d H:i";
            try {
                is24h = !new Intl.DateTimeFormat(navigator.language, { hour: 'numeric' }).format(0).match(/AM/);
            } catch (e) {}
            if (!is24h) { dateFormat = "Y-m-d h:i K"; }

            var endPickr = Flatpickr(end, {
                enableTime: true,
                time_24hr: is24h,
                dateFormat: dateFormat,
                minDate: new Date()
            });
            Flatpickr(start, {
                enableTime: true,
                time_24hr: is24h,
                minDate: new Date(),
                dateFormat: dateFormat,
                onChange: function () {
                    endPickr.set('minDate', new Date($start.val()));
                }
            });

            // Extract form data
            var getData = function () {
                var start = +new Date($start.val());
                var end = +new Date($end.val());
                if (isNaN(start) || isNaN(end)) {
                    console.error('Invalid dates');
                    return false;
                }
                return {
                    start: start,
                    end: end
                };
            };

            var send = function (data) {
                $button.prop('disabled', 'disabled');
                sFrameChan.query('Q_ADMIN_RPC', {
                    cmd: 'ADMIN_DECREE',
                    data: ['SET_MAINTENANCE', [data]]
                }, function (e, response) {
                    if (e || response.error) {
                        UI.warn(Messages.error);
                        console.error(e, response);
                        $button.prop('disabled', '');
                        return;
                    }
                    // Maintenance applied, send notification
                    common.mailbox.sendTo('BROADCAST_MAINTENANCE', {}, {}, function () {
                        refresh();
                        checkLastBroadcastHash();
                    });
                });

            };
            $button.click(function () {
                var data = getData();
                if (data === false) { return void UI.warn(Messages.error); }
                send(data);
            });
            UI.confirmButton(removeButton, {
                classes: 'btn-danger',
            }, function () {
                send("");
            });

            $form.empty().append([
                active,
                h('label', Messages.broadcast_start),
                start,
                h('label', Messages.broadcast_end),
                end,
                h('br'),
                h('div.cp-broadcast-form-submit', [
                    button
                ])
            ]);
        });
        refresh();

        common.makeUniversal('broadcast', {
            onEvent: function (obj) {
                var cmd = obj.ev;
                if (cmd !== "MAINTENANCE") { return; }
                refresh();
            }
        });

        return $div;
    };
    create['survey'] = function () {
        var key = 'survey';
        var $div = makeBlock(key); // Msg.admin_surveyHint, admin_surveyTitle

        var form = h('div.cp-admin-broadcast-form');
        var $form = $(form).appendTo($div);

        var refresh = getApi(function (Broadcast) {
            var button = h('button.btn.btn-primary', Messages.admin_surveyButton);
            var $button = $(button);
            var removeButton = h('button.btn.btn-danger', Messages.admin_surveyCancel);
            var active;

            if (Broadcast && Broadcast.surveyURL) {
                var a = h('a', {href: Broadcast.surveyURL}, Messages.admin_surveyActive);
                $(a).click(function (e) {
                    e.preventDefault();
                    common.openUnsafeURL(Broadcast.surveyURL);
                });
                active = h('div.cp-broadcast-active', [
                    h('p', a),
                    removeButton
                ]);
            }

            // Survey form
            var label = h('label', Messages.broadcast_surveyURL);
            var input = h('input');
            var $input = $(input);

            // Extract form data
            var getData = function () {
                var url = $input.val();
                if (!Util.isValidURL(url)) {
                    console.error('Invalid URL');
                    return false;
                }
                return url;
            };

            var send = function (data) {
                $button.prop('disabled', 'disabled');
                sFrameChan.query('Q_ADMIN_RPC', {
                    cmd: 'ADMIN_DECREE',
                    data: ['SET_SURVEY_URL', [data]]
                }, function (e, response) {
                    if (e || response.error) {
                        $button.prop('disabled', '');
                        UI.warn(Messages.error);
                        console.error(e, response);
                        return;
                    }
                    // Maintenance applied, send notification
                    common.mailbox.sendTo('BROADCAST_SURVEY', {
                        url: data
                    }, {}, function () {
                        refresh();
                        checkLastBroadcastHash();
                    });
                });

            };
            $button.click(function () {
                var data = getData();
                if (data === false) { return void UI.warn(Messages.error); }
                send(data);
            });
            UI.confirmButton(removeButton, {
                classes: 'btn-danger',
            }, function () {
                send("");
            });

            $form.empty().append([
                active,
                label,
                input,
                h('br'),
                h('div.cp-broadcast-form-submit', [
                    button
                ])
            ]);
        });
        refresh();

        common.makeUniversal('broadcast', {
            onEvent: function (obj) {
                var cmd = obj.ev;
                if (cmd !== "SURVEY") { return; }
                refresh();
            }
        });

        return $div;
    };

    var onRefreshPerformance = Util.mkEvent();

    create['refresh-performance'] = function () {
        var key = 'refresh-performance';
        var btn = h('button.btn.btn-primary', Messages.oo_refresh);
        var div = h('div.cp-admin-' + key + '.cp-sidebarlayout-element', btn);
        $(btn).click(function () {
            onRefreshPerformance.fire();
        });
        return $(div);
    };

    create['performance-profiling'] = function () {
        var $div = makeBlock('performance-profiling'); // Msg.admin_performanceProfilingHint, .admin_performanceProfilingTitle

        var onRefresh = function () {
            var body = h('tbody');

            var table = h('table#cp-performance-table', [
                h('thead', [
                    h('th', Messages.admin_performanceKeyHeading),
                    h('th', Messages.admin_performanceTimeHeading),
                    h('th', Messages.admin_performancePercentHeading),
                ]),
                body,
            ]);
            var appendRow = function (key, time, percent) {
                console.log("[%s] %ss running time (%s%)", key, time, percent);
                body.appendChild(h('tr', [ key, time, percent ].map(function (x) {
                    return h('td', x);
                })));
            };
            var process = function (_o) {
                var o = _o[0];
                var sorted = Object.keys(o).sort(function (a, b) {
                  if (o[b] - o[a] <= 0) { return -1; }
                  return 1;
                });
                var total = 0;
                sorted.forEach(function (k) { total += o[k]; });
                sorted.forEach(function (k) {
                    var percent = Math.floor((o[k] / total) * 1000) / 10;
                    appendRow(k, o[k], percent);
                });
            };

            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'GET_WORKER_PROFILES',
            }, function (e, data) {
                if (e || data.error) {
                    UI.warn(Messages.error);
                    return void console.error(e, data);
                }
                //console.info(data);
                $div.find("table").remove();
                process(data);
                $div.append(table);
            });
        };

        onRefresh();
        onRefreshPerformance.reg(onRefresh);

        return $div;
    };

    Messages.admin_cat_network = 'Network'; // XXX

    Messages.admin_updateAvailableTitle = 'New versions'; // XXX
    Messages.admin_updateAvailableHint = "A new version of CryptPad is available."; // XXX
    Messages.admin_updateAvailableButton = 'See release notes'; // XXX

    create['update-available'] = function () {
        if (!APP.instanceStatus.updateAvailable) { return; }
        var $div = makeBlock('update-available', true);

        var updateURL = 'https://github.com/xwiki-labs/cryptpad/releases/latest';
        if (typeof(APP.instanceStatus.updateAvailable) === 'string') {
            updateURL = APP.instanceStatus.updateAvailable;
        }

        $div.find('button').click(function () {
            common.openURL(updateURL);
        });

        return $div;
    };

    Messages.admin_checkupTitle = 'Diagnose configuration errors'; // XXX
    Messages.admin_checkupHint = "CryptPad includes a page which automatically diagnoses common configuration issues and suggests how to correct them."; // XXX
    Messages.admin_checkupButton = 'Run diagnostics'; // XXX

    create['checkup'] = function () {
        var $div = makeBlock('checkup', true);
        $div.find('button').click(function () {
            common.openURL('/checkup/');
        });
        return $div;
    };

    Messages.admin_consentToContactTitle = 'Consent to contact'; // XXX
    Messages.admin_consentToContactHint = "Server telemetry includes the admin contact email so that the developers can notify you of vulnerabilities in the softare. This will never be shared, sold, or used for marketing purposes. Consent to contact if you'd like to be informed of critical issues in your server."; // XXX
    Messages.admin_consentToContactLabel = 'I consent'; // XXX

    create['consent-to-contact'] = makeAdminCheckbox({
        key: 'consent-to-contact',
        getState: function () {
            return APP.instanceStatus.consentToContact;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['CONSENT_TO_CONTACT', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.consentToContact);
                });
            });
        },
    });

    Messages.admin_listMyInstanceTitle = 'List my instance in public directories'; // XXX
    Messages.admin_listMyInstanceHint = 'If your instance is suitable for public use you may consent to be listed in web directories.'; // XXX
    Messages.admin_listMyInstanceLabel = 'List this instance'; // XXX

    create['list-my-instance'] = makeAdminCheckbox({ // XXX uncheck if server telemetry is disabled?
        key: 'list-my-instance',
        getState: function () {
            return APP.instanceStatus.listMyInstance;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['LIST_MY_INSTANCE', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.listMyInstance);
                });
            });
        },
    });

    Messages.admin_provideAggregateStatisticsTitle = 'Provide aggregated statistics'; // XXX
    Messages.admin_provideAggregateStatisticsHint = 'You may opt-in to providing additional usage metrics to the developers, such as the approximate number of registered and daily users.'; // XXX
    Messages.admin_provideAggregateStatisticsLabel = 'Provide aggregated data'; // XXX

    create['provide-aggregate-statistics'] = makeAdminCheckbox({ // XXX uncheck if server telemetry is disabled?
        key: 'provide-aggregate-statistics',
        getState: function () {
            return APP.instanceStatus.provideAggregateStatistics;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['PROVIDE_AGGREGATE_STATISTICS', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.provideAggregateStatistics);
                });
            });
        },
    });

    Messages.admin_removeDonateButtonTitle = "Crowdfunding participation"; // XXX
    Messages.admin_removeDonateButtonHint = "CryptPad's development is partially funded by public grants and donations. Advertizing our crowdfunding efforts on your instance help the developers to continue improving the platform for everybody, but you may disable these notices if you find them inappropriate."; // XXX
    Messages.admin_removeDonateButtonLabel = 'Do not advertize crowdfunding campaigns'; // XXX

    create['remove-donate-button'] = makeAdminCheckbox({
        key: 'remove-donate-button',
        getState: function () {
            return APP.instanceStatus.removeDonateButton;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['REMOVE_DONATE_BUTTON', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.removeDonateButton);
                });
            });
        },
    });

    Messages.admin_blockDailyCheckTitle = 'Opt-out of server telemetry'; // XXX
    Messages.admin_blockDailyCheckHint = "CryptPad instances send a message to the developers' server when launched and once per day thereafter. This lets them keep track of how many servers are running which versions of the software. You can opt-out of this measurement below."; // XXX
    Messages.admin_blockDailyCheckLabel = 'Disable server telemetry'; // XXX

    /*  // XXX
     *  By default, CryptPad contacts one of our servers once a day.
     *  This check-in will also send some very basic information about your instance including its
     *  version and the adminEmail so we can reach you if we are aware of a serious problem.
     *  We will never sell it or send you marketing mail.
     *
     *  If you want to block this check-in and remain set 'blockDailyCheck' to true.
     */

    create['block-daily-check'] = makeAdminCheckbox({
        key: 'block-daily-check',
        getState: function () {
            return APP.instanceStatus.blockDailyCheck;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['BLOCK_DAILY_CHECK', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.blockDailyCheck);
                });
            });
        },
    });

    var hideCategories = function () {
        APP.$rightside.find('> div').hide();
    };
    var showCategories = function (cat) {
        hideCategories();
        cat.forEach(function (c) {
            APP.$rightside.find('.'+c).show();
        });
    };

    var SIDEBAR_ICONS = {
        general: 'fa fa-user-o',
        stats: 'fa fa-line-chart',
        quota: 'fa fa-hdd-o',
        support: 'fa fa-life-ring',
        broadcast: 'fa fa-bullhorn',
        performance: 'fa fa-heartbeat',
        network: 'fa fa-sitemap', // or fa-university ?
    };

    var createLeftside = function () {
        var $categories = $('<div>', {'class': 'cp-sidebarlayout-categories'})
                            .appendTo(APP.$leftside);
        var metadataMgr = common.getMetadataMgr();
        var privateData = metadataMgr.getPrivateData();
        var active = privateData.category || 'general';
        if (active.indexOf('-') !== -1) {
            active = active.split('-')[0];
        }
        if (!categories[active]) { active = 'general'; }
        common.setHash(active);
        Object.keys(categories).forEach(function (key) {
            var $category = $('<div>', {'class': 'cp-sidebarlayout-category'}).appendTo($categories);
            var iconClass = SIDEBAR_ICONS[key];
            if (iconClass) {
                $category.append($('<span>', {'class': iconClass}));
            }

            if (key === active) {
                $category.addClass('cp-leftside-active');
            }

            $category.click(function () {
                if (!Array.isArray(categories[key]) && categories[key].onClick) {
                    categories[key].onClick();
                    return;
                }
                active = key;
                common.setHash(key);
                $categories.find('.cp-leftside-active').removeClass('cp-leftside-active');
                $category.addClass('cp-leftside-active');
                showCategories(categories[key]);
            });

            $category.append(Messages['admin_cat_'+key] || key);
        });
        showCategories(categories[active]);
    };

    var createToolbar = function () {
        var displayed = ['useradmin', 'newpad', 'limit', 'pageTitle', 'notifications'];
        var configTb = {
            displayed: displayed,
            sfCommon: common,
            $container: APP.$toolbar,
            pageTitle: Messages.adminPage || 'Admin',
            metadataMgr: common.getMetadataMgr(),
        };
        APP.toolbar = Toolbar.create(configTb);
        APP.toolbar.$rightside.hide();
    };

    var updateStatus = APP.updateStatus = function (cb) {
        sFrameChan.query('Q_ADMIN_RPC', {
            cmd: 'INSTANCE_STATUS',
        }, function (e, data) {
            if (e) { console.error(e); return void cb(e); }
            if (!Array.isArray(data)) { return void cb('EINVAL'); }
            APP.instanceStatus = data[0];
            console.log("Status", APP.instanceStatus);
            cb();
        });
    };

    nThen(function (waitFor) {
        $(waitFor(UI.addLoadingScreen));
        SFCommon.create(waitFor(function (c) { APP.common = common = c; }));
    }).nThen(function (waitFor) {
        APP.$container = $('#cp-sidebarlayout-container');
        APP.$toolbar = $('#cp-toolbar');
        APP.$leftside = $('<div>', {id: 'cp-sidebarlayout-leftside'}).appendTo(APP.$container);
        APP.$rightside = $('<div>', {id: 'cp-sidebarlayout-rightside'}).appendTo(APP.$container);
        sFrameChan = common.getSframeChannel();
        sFrameChan.onReady(waitFor());
    }).nThen(function (waitFor) {
        updateStatus(waitFor());
    }).nThen(function (/*waitFor*/) {
        createToolbar();
        var metadataMgr = common.getMetadataMgr();
        var privateData = metadataMgr.getPrivateData();
        common.setTabTitle(Messages.adminPage || 'Administration');

        if (!common.isAdmin()) {
            return void UI.errorLoadingScreen(Messages.admin_authError || '403 Forbidden');
        }

        APP.privateKey = privateData.supportPrivateKey;
        APP.origin = privateData.origin;
        APP.readOnly = privateData.readOnly;
        APP.support = Support.create(common, true);


        // Content
        var $rightside = APP.$rightside;
        var addItem = function (cssClass) {
            var item = cssClass.slice(9); // remove 'cp-settings-'
            if (typeof (create[item]) === "function") {
                $rightside.append(create[item]());
            }
        };
        for (var cat in categories) {
            if (!Array.isArray(categories[cat])) { continue; }
            categories[cat].forEach(addItem);
        }

        createLeftside();

        UI.removeLoadingScreen();

    });
});