define([
    'jquery',
    '/api/config',
    '/bower_components/chainpad-crypto/crypto.js',
    '/common/toolbar3.js',
    '/bower_components/nthen/index.js',
    '/common/sframe-common.js',
    '/common/hyperscript.js',
    '/customize/messages.js',
    '/common/common-interface.js',
    '/common/common-util.js',
    '/common/common-hash.js',
    '/support/ui.js',

    '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,
    Crypto,
    Toolbar,
    nThen,
    SFCommon,
    h,
    Messages,
    UI,
    Util,
    Hash,
    Support
    )
{
    var APP = {};

    var common;
    var sFrameChan;

    var categories = {
        'general': [
            'cp-admin-flush-cache',
            'cp-admin-update-limit'
        ],
        'stats': [
            'cp-admin-active-sessions',
            'cp-admin-active-pads',
            'cp-admin-registered',
            'cp-admin-disk-usage',
        ],
        'support': [
            'cp-admin-support-list',
            'cp-admin-support-init'
        ]
    };

    var create = {};

    var makeBlock = function (key, addButton) {
        // Convert to camlCase for translation keys
        var safeKey = key.replace(/-([a-z])/g, function (g) { return g[1].toUpperCase(); });

        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);
        $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);
        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;
    };
    create['active-sessions'] = function () {
        var key = 'active-sessions';
        var $div = makeBlock(key);
        sFrameChan.query('Q_ADMIN_RPC', {
            cmd: 'ACTIVE_SESSIONS',
        }, function (e, data) {
            var total = data[0];
            var ips = data[1];
            $div.append(h('pre', total + ' (' + ips + ')'));
        });
        return $div;
    };
    create['active-pads'] = function () {
        var key = 'active-pads';
        var $div = makeBlock(key);
        sFrameChan.query('Q_ADMIN_RPC', {
            cmd: 'ACTIVE_PADS',
        }, function (e, data) {
            console.log(e, data);
            $div.append(h('pre', String(data)));
        });
        return $div;
    };
    create['registered'] = function () {
        var key = 'registered';
        var $div = makeBlock(key);
        sFrameChan.query('Q_ADMIN_RPC', {
            cmd: 'REGISTERED_USERS',
        }, function (e, data) {
            console.log(e, data);
            $div.append(h('pre', String(data)));
        });
        return $div;
    };
    create['disk-usage'] = function () {
        var key = 'disk-usage';
        var $div = makeBlock(key, true);
        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;
    create['support-list'] = function () {
        if (!supportKey || !APP.privateKey) { return; }
        var $div = makeBlock('support-list');
        $div.addClass('cp-support-container');
        var hashesById = {};

        // 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));
                    return;
                }
                if (msg.type !== 'TICKET') { return; }

                if (!$ticket.length) {
                    $ticket = APP.support.makeTicket($div, content, function () {
                        var error = false;
                        hashesById[id].forEach(function (d) {
                            common.mailbox.dismiss(d, function (err) {
                                if (err) {
                                    error = true;
                                    console.error(err);
                                }
                            });
                        });
                        if (!error) { $ticket.remove(); }
                    });
                }
                $ticket.append(APP.support.makeMessage(content, hash));
            }
        });
        return $div;
    };

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

    create['support-init'] = function () {
        var $div = makeBlock('support-init');
        if (!supportKey) {
            $div.append(h('p', Messages.admin_supportInitHelp));
            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']());
                });
            });
            return $div;
        }
        return;
    };

    var hideCategories = function () {
        APP.$rightside.find('> div').hide();
    };
    var showCategories = function (cat) {
        hideCategories();
        cat.forEach(function (c) {
            APP.$rightside.find('.'+c).show();
        });
    };
    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';
        common.setHash(active);
        Object.keys(categories).forEach(function (key) {
            var $category = $('<div>', {'class': 'cp-sidebarlayout-category'}).appendTo($categories);
            if (key === 'general') { $category.append($('<span>', {'class': 'fa fa-user-o'})); }
            if (key === 'stats') { $category.append($('<span>', {'class': 'fa fa-hdd-o'})); }
            if (key === 'support') { $category.append($('<span>', {'class': 'fa fa-life-ring'})); }

            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();
    };

    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*/) {
        createToolbar();
        var metadataMgr = common.getMetadataMgr();
        var privateData = metadataMgr.getPrivateData();
        common.setTabTitle(Messages.adminPage || 'Administration');

        if (!privateData.edPublic || !ApiConfig.adminKeys || !Array.isArray(ApiConfig.adminKeys)
            || ApiConfig.adminKeys.indexOf(privateData.edPublic) === -1) {
            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();

    });
});
