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-uptime',
            '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',
            'cp-admin-enable-disk-measurements',
            'cp-admin-bytes-written',
        ],
        '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',
            'cp-admin-instance-purpose',
        ],
    };

    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;
    };

    Messages.admin_archiveReason = "// XXX REASON"; // XXX

    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 input3 = h('input', {
            id: 'cp-admin-archive-reason',
            placeholder: Messages.admin_archiveReason,
        });
        var label3 = h('label', {
            for: 'cp-admin-archive-reason',
        }, Messages.admin_archiveReason);

        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,
            label3,
            input3,
        ]));

        $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 () {
                var $reason = $(input3);
                sFrameChan.query('Q_ADMIN_RPC', {
                    cmd: archive ? 'ARCHIVE_DOCUMENT' : 'RESTORE_ARCHIVED_DOCUMENT',
                    data: {
                        id: channel,
                        reason: $reason.val(), // XXX
                    },
                }, 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('');
                    $reason.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 $note = $(note);

        var getValues = function () {
            var key = $key.val();
            var _limit = parseInt($(limit).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);
            }
            var _note = ($note.val() || "").trim();
            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('');
                $note.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;
    };

    Messages.admin_uptimeTitle = 'Launch time';
    Messages.admin_uptimeHint = 'Date and time at which the server was launched';

    create['uptime'] = function () {
        var key = 'uptime';
        var $div = makeBlock(key); // Msg.admin_activeSessionsHint, .admin_activeSessionsTitle
        var pre = h('pre');

        var set = function () {
            var uptime = APP.instanceStatus.launchTime;
            if (typeof(uptime) !== 'number') { return; }
            pre.innerText = new Date(uptime);
        };

        set();

        $div.append(pre);
        onRefreshStats.reg(function () {
            set();
        });
        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']) ||
                       Util.find(msg, ['content', 'msg', 'content', 'sender', 'quota', '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 = UIElements.is24h();
            var dateFormat = "Y-m-d H:i";
            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', 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 createBody = function () {
                 return h('div#profiling-chart.cp-charts.cp-bar-table', [
                    h('span.cp-charts-row.heading', [
                        h('span', Messages.admin_performanceKeyHeading),
                        h('span', Messages.admin_performanceTimeHeading),
                        h('span', Messages.admin_performancePercentHeading),
                        //h('span', ''), //Messages.admin_performancePercentHeading),
                    ]),
                ]);
            };

            var body = createBody();
            var appendRow = function (key, time, percent, scaled) {
                //console.log("[%s] %ss running time (%s%)", key, time, percent);
                body.appendChild(h('span.cp-charts-row', [
                    h('span', key),
                    h('span', time),
                    //h('span', percent),
                    h('span.cp-bar-container', [
                        h('span.cp-bar.profiling-percentage', {
                            style: 'width: ' + scaled + '%',
                        }, ' ' ),
                        h('span.profiling-label', percent + '%'),
                    ]),
                ]));
            };
            var process = function (_o) {
                $('#profiling-chart').remove();
                body = createBody();
                var o = _o[0];
                var sorted = Object.keys(o).sort(function (a, b) {
                  if (o[b] - o[a] <= 0) { return -1; }
                  return 1;
                });

                var values = sorted.map(function (k) { return o[k]; });
                var total = 0;
                values.forEach(function (value) { total += value; });
                var max = Math.max.apply(null, values);

                sorted.forEach(function (k) {
                    var percent = Math.floor((o[k] / total) * 1000) / 10;
                    appendRow(k, o[k], percent, (o[k] / max) * 100);
                });
                $div.append(h('div.width-constrained', body));
            };

            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);
                }
                process(data);
            });
        };

        onRefresh();
        onRefreshPerformance.reg(onRefresh);

        return $div;
    };

    Messages.admin_enableDiskMeasurementsTitle = "Measure disk performance"; // XXX
    Messages.admin_enableDiskMeasurementsHint = "If enabled, a JSON endpoint will be exposed under /api/profiling which keeps a running measurement of disk I/O within a configurable window. This setting can impact server performance and may reveal data you'd rather keep hidden. It is recommended that you leave it disabled unless you know what you are doing."; // XXX

    create['enable-disk-measurements'] = makeAdminCheckbox({
        key: 'enable-disk-measurements',
        getState: function () {
            return APP.instanceStatus.enableProfiling;
        },
        query: function (val, setState) {
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['ENABLE_PROFILING', [val]]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    console.error(e, response);
                }
                APP.updateStatus(function () {
                    setState(APP.instanceStatus.enableProfiling);
                });
            });
        },
    });

    Messages.admin_bytesWrittenTitle = "Disk performance measurement window";
    Messages.admin_bytesWrittenHint = "If you have enabled disk performance measurements then the duration of the window can be configured below."; // XXX
    Messages.admin_bytesWrittenDuration = "Duration of the window in milliseconds: {0}"; // XXX
    Messages.admin_defaultDuration = "admin_defaultDuration"; // XXX
    Messages.admin_setDuration = "Set duration"; // XXX

    var isPositiveInteger = function (n) {
        return n && typeof(n) === 'number'  && n % 1 === 0 && n > 0;
    };

    create['bytes-written'] = function () {
        var key = 'bytes-written';
        var $div = makeBlock(key);

        var duration = APP.instanceStatus.profilingWindow;
        if (!isPositiveInteger(duration)) { duration = 10000; }
        var newDuration = h('input', {type: 'number', min: 0, value: duration});
        var set = h('button.btn.btn-primary', Messages.admin_setDuration);
        $div.append(h('div', [
            h('span.cp-admin-bytes-written-duration', Messages._getKey('admin_bytesWrittenDuration', [duration])),
            h('div.cp-admin-setlimit-form', [
                newDuration,
                h('nav', [set])
            ])
        ]));

        UI.confirmButton(set, {
            classes: 'btn-primary',
            multiple: true,
            validate: function () {
                var l = parseInt($(newDuration).val());
                if (isNaN(l)) { return false; }
                return true;
            }
        }, function () {
            var d = parseInt($(newDuration).val());
            if (!isPositiveInteger(d)) { return void UI.warn(Messages.error); }

            var data = [d];
            sFrameChan.query('Q_ADMIN_RPC', {
                cmd: 'ADMIN_DECREE',
                data: ['SET_PROFILING_WINDOW', data]
            }, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    return void console.error(e, response);
                }
                $div.find('.cp-admin-bytes-written-duration').text(Messages._getKey('admin_limit', [d]));
            });
        });

        return $div;
    };

    create['update-available'] = function () { // Messages.admin_updateAvailableTitle.admin_updateAvailableHint.admin_updateAvailableLabel.admin_updateAvailableButton
        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;
    };

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

    create['consent-to-contact'] = makeAdminCheckbox({ // Messages.admin_consentToContactTitle.admin_consentToContactHint.admin_consentToContactLabel
        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);
                });
            });
        },
    });

    create['list-my-instance'] = makeAdminCheckbox({ // Messages.admin_listMyInstanceTitle.admin_listMyInstanceHint.admin_listMyInstanceLabel
        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);
                });
            });
        },
    });

    create['provide-aggregate-statistics'] = makeAdminCheckbox({ // Messages.admin_provideAggregateStatisticsTitle.admin_provideAggregateStatisticsHint.admin_provideAggregateStatisticsLabel
        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);
                });
            });
        },
    });

    create['remove-donate-button'] = makeAdminCheckbox({ // Messages.admin_removeDonateButtonTitle.admin_removeDonateButtonHint.admin_removeDonateButtonLabel
        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);
                });
            });
        },
    });

    create['block-daily-check'] = makeAdminCheckbox({ // Messages.admin_blockDailyCheckTitle.admin_blockDailyCheckHint.admin_blockDailyCheckLabel
        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 sendDecree = function (data, cb) {
        sFrameChan.query('Q_ADMIN_RPC', {
            cmd: 'ADMIN_DECREE',
            data: data,
        }, cb);
    };

    create['instance-purpose'] = function () {
        var key = 'instance-purpose';
        var $div = makeBlock(key); // Messages.admin_instancePurposeTitle.admin_instancePurposeHint

        var values = [
            'noanswer', // Messages.admin_purpose_noanswer
            'experiment', // Messages.admin_purpose_experiment
            'personal', // Messages.admin_purpose_personal
            'education', // Messages.admin_purpose_education
            'org', // Messages.admin_purpose_org
            'business', // Messages.admin_purpose_business
            'public', // Messages.admin_purpose_public
        ];

        var defaultPurpose = 'noanswer';
        var purpose = APP.instanceStatus.instancePurpose || defaultPurpose;

        var opts = h('div.cp-admin-radio-container', [
            values.map(function (key) {
                var full_key = 'admin_purpose_' + key;
                return UI.createRadio('cp-instance-purpose-radio', 'cp-instance-purpose-radio-'+key,
                    Messages[full_key] || Messages._getKey(full_key, [defaultPurpose]),
                    key === purpose, {
                        input: { value: key },
                        label: { class: 'noTitle' }
                    });
            })
        ]);

        var $opts = $(opts);
        //var $br = $(h('br',));
        //$div.append($br);

        $div.append(opts);

        var setPurpose = function (value, cb) {
            sendDecree([
                'SET_INSTANCE_PURPOSE',
                [ value]
            ], cb);
        };

        $opts.on('change', function () {
            var val = $opts.find('input:radio:checked').val();
            console.log(val);
            //spinner.spin();
            setPurpose(val, function (e, response) {
                if (e || response.error) {
                    UI.warn(Messages.error);
                    //spinner.hide();
                    return;
                }
                //spinner.done();
                UI.log(Messages.saved);
            });
        });

        return $div;
    };

    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 iconClass = SIDEBAR_ICONS[key];
            var icon;
            if (iconClass) {
                icon = h('span', { class: iconClass });
            }
            var $category = $(h('div', {
                'class': 'cp-sidebarlayout-category'
            }, [
                icon,
                Messages['admin_cat_'+key] || key,
            ])).appendTo($categories);
            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]);
            });

        });
        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();

    });
});