// Load #1, load as little as possible because we are in a race to get the loading screen up.
define([
    '/bower_components/nthen/index.js',
    '/api/config',
    'jquery',
], function (nThen, ApiConfig, $) {
    var common = {};

    common.start = function (cfg) {
        cfg = cfg || {};
        var realtime = !cfg.noRealtime;
        var secret;
        var hashes;
        var isNewFile;
        var CpNfOuter;
        var Cryptpad;
        var Crypto;
        var Cryptget;
        var SFrameChannel;
        var sframeChan;
        var FilePicker;
        var Messaging;
        var Notifier;
        var Utils = {
            nThen: nThen
        };
        var AppConfig;
        var Test;
        var password;
        var initialPathInDrive;

        nThen(function (waitFor) {
            // Load #2, the loading screen is up so grab whatever you need...
            require([
                '/common/sframe-chainpad-netflux-outer.js',
                '/common/cryptpad-common.js',
                '/bower_components/chainpad-crypto/crypto.js',
                '/common/cryptget.js',
                '/common/outer/worker-channel.js',
                '/filepicker/main.js',
                '/common/common-messaging.js',
                '/common/common-notifier.js',
                '/common/common-hash.js',
                '/common/common-util.js',
                '/common/common-realtime.js',
                '/common/common-constants.js',
                '/common/common-feedback.js',
                '/common/outer/local-store.js',
                '/customize/application_config.js',
                '/common/test.js',
            ], waitFor(function (_CpNfOuter, _Cryptpad, _Crypto, _Cryptget, _SFrameChannel,
            _FilePicker,  _Messaging, _Notifier, _Hash, _Util, _Realtime,
            _Constants, _Feedback, _LocalStore, _AppConfig, _Test) {
                CpNfOuter = _CpNfOuter;
                Cryptpad = _Cryptpad;
                Crypto = Utils.Crypto = _Crypto;
                Cryptget = _Cryptget;
                SFrameChannel = _SFrameChannel;
                FilePicker = _FilePicker;
                Messaging = _Messaging;
                Notifier = _Notifier;
                Utils.Hash = _Hash;
                Utils.Util = _Util;
                Utils.Realtime = _Realtime;
                Utils.Constants = _Constants;
                Utils.Feedback = _Feedback;
                Utils.LocalStore = _LocalStore;
                AppConfig = _AppConfig;
                Test = _Test;

                if (localStorage.CRYPTPAD_URLARGS !== ApiConfig.requireConf.urlArgs) {
                    console.log("New version, flushing cache");
                    Object.keys(localStorage).forEach(function (k) {
                        if (k.indexOf('CRYPTPAD_CACHE|') !== 0) { return; }
                        delete localStorage[k];
                    });
                    localStorage.CRYPTPAD_URLARGS = ApiConfig.requireConf.urlArgs;
                }
                var cache = {};
                var localStore = {};
                Object.keys(localStorage).forEach(function (k) {
                    if (k.indexOf('CRYPTPAD_CACHE|') === 0) {
                        cache[k.slice(('CRYPTPAD_CACHE|').length)] = localStorage[k];
                        return;
                    }
                    if (k.indexOf('CRYPTPAD_STORE|') === 0) {
                        localStore[k.slice(('CRYPTPAD_STORE|').length)] = localStorage[k];
                        return;
                    }
                });

                // The inner iframe tries to get some data from us every ms (cache, store...).
                // It will send a "READY" message and wait for our answer with the correct txid.
                // First, we have to answer to this message, otherwise we're going to block
                // sframe-boot.js. Then we can start the channel.
                var msgEv = _Util.mkEvent();
                var iframe = $('#sbox-iframe')[0].contentWindow;
                var postMsg = function (data) {
                    iframe.postMessage(data, '*');
                };
                var whenReady = waitFor(function (msg) {
                    if (msg.source !== iframe) { return; }
                    var data = JSON.parse(msg.data);
                    if (!data.txid) { return; }
                    // Remove the listener once we've received the READY message
                    window.removeEventListener('message', whenReady);
                    // Answer with the requested data
                    postMsg(JSON.stringify({ txid: data.txid, cache: cache, localStore: localStore, language: Cryptpad.getLanguage() }));

                    // Then start the channel
                    window.addEventListener('message', function (msg) {
                        if (msg.source !== iframe) { return; }
                        msgEv.fire(msg);
                    });
                    SFrameChannel.create(msgEv, postMsg, waitFor(function (sfc) {
                        sframeChan = sfc;
                    }));
                });
                window.addEventListener('message', whenReady);

                Cryptpad.loading.onDriveEvent.reg(function (data) {
                    if (sframeChan) { sframeChan.event('EV_LOADING_INFO', data); }
                });

                Cryptpad.ready(waitFor(function () {
                    if (sframeChan) {
                        sframeChan.event('EV_LOADING_INFO', {
                            state: -1
                        });
                    }
                }), {
                    messenger: cfg.messaging,
                    driveEvents: cfg.driveEvents
                });
            }));
        }).nThen(function (waitFor) {
            if (!Utils.Hash.isValidHref(window.location.href)) {
                waitFor.abort();
                return void sframeChan.event('EV_LOADING_ERROR', 'INVALID_HASH');
            }

            $('#sbox-iframe').focus();

            sframeChan.on('EV_CACHE_PUT', function (x) {
                Object.keys(x).forEach(function (k) {
                    localStorage['CRYPTPAD_CACHE|' + k] = x[k];
                });
            });
            sframeChan.on('EV_LOCALSTORE_PUT', function (x) {
                Object.keys(x).forEach(function (k) {
                    if (typeof(x[k]) === "undefined") {
                        delete localStorage['CRYPTPAD_STORE|' + k];
                        return;
                    }
                    localStorage['CRYPTPAD_STORE|' + k] = x[k];
                });
            });

            if (cfg.getSecrets) {
                var w = waitFor();
                // No password for drive, profile and todo
                cfg.getSecrets(Cryptpad, Utils, waitFor(function (err, s) {
                    secret = Utils.secret = s;
                    Cryptpad.getShareHashes(secret, function (err, h) {
                        hashes = h;
                        w();
                    });
                }));
            } else {
                var parsed = Utils.Hash.parsePadUrl(window.location.href);
                var todo = function () {
                    secret = Utils.secret = Utils.Hash.getSecrets(parsed.type, void 0, password);
                    Cryptpad.getShareHashes(secret, waitFor(function (err, h) { hashes = h; }));
                };

                // Prompt the password here if we have a hash containing /p/
                // or get it from the pad attributes
                var needPassword = parsed.hashData && parsed.hashData.password;
                if (needPassword) {
                    // Check if we have a password, and check if it is correct (file exists).
                    // It we don't have a correct password, display the password prompt.
                    // Maybe the file has been deleted from the server or the password has been changed.
                    Cryptpad.getPadAttribute('password', waitFor(function (err, val) {
                        var askPassword = function (wrongPasswordStored) {
                            // Ask for the password and check if the pad exists
                            // If the pad doesn't exist, it means the password isn't correct
                            // or the pad has been deleted
                            var correctPassword = waitFor();
                            sframeChan.on('Q_PAD_PASSWORD_VALUE', function (data, cb) {
                                password = data;
                                var next = function (e, isNew) {
                                    if (Boolean(isNew)) {
                                        // Ask again in the inner iframe
                                        // We should receive a new Q_PAD_PASSWORD_VALUE
                                        cb(false);
                                    } else {
                                        todo();
                                        if (wrongPasswordStored) {
                                            // Store the correct password
                                            Cryptpad.setPadAttribute('password', password, function () {
                                                correctPassword();
                                            }, parsed.getUrl());
                                        } else {
                                            correctPassword();
                                        }
                                        cb(true);
                                    }
                                };
                                if (parsed.type === "file") {
                                    // `isNewChannel` doesn't work for files (not a channel)
                                    // `getFileSize` is not adapted to channels because of metadata
                                    Cryptpad.getFileSize(window.location.href, password, function (e, size) {
                                        next(e, size === 0);
                                    });
                                    return;
                                }
                                // Not a file, so we can use `isNewChannel`
                                Cryptpad.isNewChannel(window.location.href, password, next);
                            });
                            sframeChan.event("EV_PAD_PASSWORD");
                        };

                        if (val) {
                            password = val;
                            Cryptpad.getFileSize(window.location.href, password, waitFor(function (e, size) {
                                if (size !== 0) {
                                    return void todo();
                                }
                                // Wrong password or deleted file?
                                askPassword(true);
                            }));
                        } else {
                            askPassword();
                        }
                    }), parsed.getUrl());
                    return;
                }
                // If no password, continue...
                todo();
            }
        }).nThen(function (waitFor) {
            if (cfg.afterSecrets) {
                cfg.afterSecrets(Cryptpad, Utils, secret, waitFor());
            }
        }).nThen(function (waitFor) {
            // Check if the pad exists on server
            if (!window.location.hash) { isNewFile = true; return; }

            if (realtime) {
                Cryptpad.isNewChannel(window.location.href, password, waitFor(function (e, isNew) {
                    if (e) { return console.error(e); }
                    isNewFile = Boolean(isNew);
                }));
            }
        }).nThen(function () {
            var readOnly = secret.keys && !secret.keys.editKeyStr;
            var isNewHash = true;
            if (!secret.keys) {
                isNewHash = false;
                secret.keys = secret.key;
                readOnly = false;
            }
            Utils.crypto = Utils.Crypto.createEncryptor(Utils.secret.keys);
            var parsed = Utils.Hash.parsePadUrl(window.location.href);
            if (!parsed.type) { throw new Error(); }
            var defaultTitle = Utils.Hash.getDefaultName(parsed);
            var edPublic;
            var forceCreationScreen = cfg.useCreationScreen &&
                                      sessionStorage[Utils.Constants.displayPadCreationScreen];
            delete sessionStorage[Utils.Constants.displayPadCreationScreen];
            var updateMeta = function () {
                // TODO availableHashes in privateData may need updates once we have
                // a better privileges workflow

                //console.log('EV_METADATA_UPDATE');
                var metaObj, isTemplate;
                nThen(function (waitFor) {
                    Cryptpad.getMetadata(waitFor(function (err, m) {
                        if (err) { console.log(err); }
                        metaObj = m;
                        edPublic = metaObj.priv.edPublic; // needed to create an owned pad
                    }));
                    Cryptpad.isTemplate(window.location.href, waitFor(function (err, t) {
                        if (err) { console.log(err); }
                        isTemplate = t;
                    }));
                }).nThen(function (/*waitFor*/) {
                    metaObj.doc = {
                        defaultTitle: defaultTitle,
                        type: cfg.type || parsed.type
                    };
                    var additionalPriv = {
                        accountName: Utils.LocalStore.getAccountName(),
                        origin: window.location.origin,
                        pathname: window.location.pathname,
                        fileHost: ApiConfig.fileHost,
                        readOnly: readOnly,
                        availableHashes: hashes,
                        isTemplate: isTemplate,
                        feedbackAllowed: Utils.Feedback.state,
                        isPresent: parsed.hashData && parsed.hashData.present,
                        isEmbed: parsed.hashData && parsed.hashData.embed,
                        accounts: {
                            donateURL: Cryptpad.donateURL,
                            upgradeURL: Cryptpad.upgradeURL
                        },
                        plan: localStorage[Utils.Constants.plan],
                        isNewFile: isNewFile,
                        isDeleted: isNewFile && window.location.hash.length > 0,
                        forceCreationScreen: forceCreationScreen,
                        password: password,
                        channel: secret.channel,
                        enableSF: localStorage.CryptPad_SF === "1", // TODO to remove when enabled by default
                        devMode: localStorage.CryptPad_dev === "1",
                    };
                    if (window.CryptPad_newSharedFolder) {
                        additionalPriv.newSharedFolder = window.CryptPad_newSharedFolder;
                    }
                    if (Utils.Constants.criticalApps.indexOf(parsed.type) === -1 &&
                          AppConfig.availablePadTypes.indexOf(parsed.type) === -1) {
                        additionalPriv.disabledApp = true;
                    }
                    if (!Utils.LocalStore.isLoggedIn() &&
                        AppConfig.registeredOnlyTypes.indexOf(parsed.type) !== -1 &&
                        parsed.type !== "file") {
                        additionalPriv.registeredOnly = true;
                    }

                    for (var k in additionalPriv) { metaObj.priv[k] = additionalPriv[k]; }

                    if (cfg.addData) {
                        cfg.addData(metaObj.priv, Cryptpad);
                    }

                    sframeChan.event('EV_METADATA_UPDATE', metaObj);
                });
            };
            Cryptpad.onMetadataChanged(updateMeta);
            sframeChan.onReg('EV_METADATA_UPDATE', updateMeta);

            Utils.LocalStore.onLogout(function () {
                sframeChan.event('EV_LOGOUT');
            });

            Test.registerOuter(sframeChan);

            Cryptpad.onNewVersionReconnect.reg(function () {
                sframeChan.event("EV_NEW_VERSION");
            });

            // Put in the following function the RPC queries that should also work in filepicker
            var addCommonRpc = function (sframeChan) {
                sframeChan.on('Q_ANON_RPC_MESSAGE', function (data, cb) {
                    Cryptpad.anonRpcMsg(data.msg, data.content, function (err, response) {
                        cb({error: err, response: response});
                    });
                });

                sframeChan.on('Q_GET_PIN_LIMIT_STATUS', function (data, cb) {
                    Cryptpad.isOverPinLimit(function (e, overLimit, limits) {
                        cb({
                            error: e,
                            overLimit: overLimit,
                            limits: limits
                        });
                    });
                });

                sframeChan.on('Q_THUMBNAIL_GET', function (data, cb) {
                    Utils.LocalStore.getThumbnail(data.key, function (e, data) {
                        cb({
                            error: e,
                            data: data
                        });
                    });
                });
                sframeChan.on('Q_THUMBNAIL_SET', function (data, cb) {
                    Utils.LocalStore.setThumbnail(data.key, data.value, function (e) {
                        cb({error:e});
                    });
                });

            };
            addCommonRpc(sframeChan);

            var currentTitle;
            var currentTabTitle;
            var setDocumentTitle = function () {
                if (!currentTabTitle) {
                    document.title = currentTitle || 'CryptPad';
                    return;
                }
                var title = currentTabTitle.replace(/\{title\}/g, currentTitle || 'CryptPad');
                document.title = title;
            };
            sframeChan.on('Q_SET_PAD_TITLE_IN_DRIVE', function (newData, cb) {
                var newTitle = newData.title || newData.defaultTitle;
                currentTitle = newTitle;
                setDocumentTitle();
                var data = {
                    password: password,
                    title: newTitle,
                    channel: secret.channel,
                    path: initialPathInDrive // Where to store the pad if we don't have it in our drive
                };
                Cryptpad.setPadTitle(data, function (err) {
                    cb(err);
                });
            });
            sframeChan.on('EV_SET_TAB_TITLE', function (newTabTitle) {
                currentTabTitle = newTabTitle;
                setDocumentTitle();
            });

            sframeChan.on('EV_SET_HASH', function (hash) {
                window.location.hash = hash;
            });

            Cryptpad.autoStore.onStoreRequest.reg(function (data) {
                sframeChan.event("EV_AUTOSTORE_DISPLAY_POPUP", data);
            });
            sframeChan.on('Q_AUTOSTORE_STORE', function (obj, cb) {
                var data = {
                    password: password,
                    title: currentTitle,
                    channel: secret.channel,
                    path: initialPathInDrive, // Where to store the pad if we don't have it in our drive
                    forceSave: true
                };
                Cryptpad.setPadTitle(data, function (err) {
                    cb({error: err});
                });
            });
            sframeChan.on('Q_IS_PAD_STORED', function (data, cb) {
                Cryptpad.getPadAttribute('title', function (err, data) {
                    cb (!err && typeof (data) === "string");
                });
            });

            sframeChan.on('Q_IMPORT_MEDIATAG', function (obj, cb) {
                var key = obj.key;
                var channel = obj.channel;
                var hash = Utils.Hash.getFileHashFromKeys({
                    version: 1,
                    channel: channel,
                    keys: {
                        fileKeyStr: key
                    }
                });
                var href = '/file/#' + hash;
                var data = {
                    title: obj.name,
                    href: href,
                    channel: channel,
                    owners: obj.owners,
                    forceSave: true,
                };
                Cryptpad.setPadTitle(data, function (err) {
                    Cryptpad.setPadAttribute('fileType', obj.type, null, href);
                    cb(err);
                });
            });

            sframeChan.on('Q_SETTINGS_SET_DISPLAY_NAME', function (newName, cb) {
                Cryptpad.setDisplayName(newName, function (err) {
                    if (err) {
                        console.log("Couldn't set username");
                        console.error(err);
                        cb('ERROR');
                        return;
                    }
                    Cryptpad.changeMetadata();
                    cb();
                });
            });

            sframeChan.on('Q_LOGOUT', function (data, cb) {
                Utils.LocalStore.logout(cb);
            });

            sframeChan.on('EV_NOTIFY', function (data) {
                Notifier.notify(data);
            });

            sframeChan.on('Q_SET_LOGIN_REDIRECT', function (data, cb) {
                sessionStorage.redirectTo = window.location.href;
                cb();
            });

            sframeChan.on('Q_MOVE_TO_TRASH', function (data, cb) {
                cb = cb || $.noop;
                if (readOnly && hashes.editHash) {
                    var appPath = window.location.pathname;
                    Cryptpad.moveToTrash(cb, appPath + '#' + hashes.editHash);
                    return;
                }
                Cryptpad.moveToTrash(cb);
            });

            sframeChan.on('Q_SAVE_AS_TEMPLATE', function (data, cb) {
                Cryptpad.saveAsTemplate(Cryptget.put, data, cb);
            });

            // Messaging
            sframeChan.on('Q_SEND_FRIEND_REQUEST', function (data, cb) {
                Cryptpad.messaging.sendFriendRequest(data, cb);
            });
            sframeChan.on('Q_ANSWER_FRIEND_REQUEST', function (data, cb) {
                Cryptpad.messaging.answerFriendRequest(data, cb);
            });

            // History
            sframeChan.on('Q_GET_FULL_HISTORY', function (data, cb) {
                var crypto = Crypto.createEncryptor(secret.keys);
                Cryptpad.getFullHistory({
                    channel: secret.channel,
                    validateKey: secret.keys.validateKey
                }, function (encryptedMsgs) {
                    var nt = nThen;
                    var decryptedMsgs = [];
                    var total = encryptedMsgs.length;
                    encryptedMsgs.forEach(function (msg, i) {
                        nt = nt(function (waitFor) {
                            // The 3rd parameter "true" means we're going to skip signature validation.
                            // We don't need it since the message is already validated serverside by hk
                            decryptedMsgs.push(crypto.decrypt(msg, true, true));
                            setTimeout(waitFor(function () {
                                sframeChan.event('EV_FULL_HISTORY_STATUS', (i+1)/total);
                            }));
                        }).nThen;
                    });
                    nt(function () {
                        cb(decryptedMsgs);
                    });
                });
            });
            sframeChan.on('Q_GET_HISTORY_RANGE', function (data, cb) {
                var nSecret = secret;
                if (cfg.isDrive) {
                    var hash = Utils.LocalStore.getUserHash() || Utils.LocalStore.getFSHash();
                    if (hash) {
                        nSecret = Utils.Hash.getSecrets('drive', hash);
                    }
                }
                var channel = nSecret.channel;
                var validate = nSecret.keys.validateKey;
                var crypto = Crypto.createEncryptor(nSecret.keys);
                Cryptpad.getHistoryRange({
                    channel: channel,
                    validateKey: validate,
                    lastKnownHash: data.lastKnownHash
                }, function (data) {
                    cb({
                        isFull: data.isFull,
                        messages: data.messages.map(function (msg) {
                            // The 3rd parameter "true" means we're going to skip signature validation.
                            // We don't need it since the message is already validated serverside by hk
                            return crypto.decrypt(msg, true, true);
                        }),
                        lastKnownHash: data.lastKnownHash
                    });
                });
            });

            // Store
            sframeChan.on('Q_GET_PAD_ATTRIBUTE', function (data, cb) {
                var href;
                if (readOnly && hashes.editHash) {
                    // If we have a stronger hash, use it for pad attributes
                    href = window.location.pathname + '#' + hashes.editHash;
                }
                if (data.href) { href = data.href; }
                Cryptpad.getPadAttribute(data.key, function (e, data) {
                    cb({
                        error: e,
                        data: data
                    });
                }, href);
            });
            sframeChan.on('Q_SET_PAD_ATTRIBUTE', function (data, cb) {
                var href;
                if (readOnly && hashes.editHash) {
                    // If we have a stronger hash, use it for pad attributes
                    href = window.location.pathname + '#' + hashes.editHash;
                }
                if (data.href) { href = data.href; }
                Cryptpad.setPadAttribute(data.key, data.value, function (e) {
                    cb({error:e});
                }, href);
            });

            sframeChan.on('Q_GET_ATTRIBUTE', function (data, cb) {
                Cryptpad.getAttribute(data.key, function (e, data) {
                    cb({
                        error: e,
                        data: data
                    });
                });
            });
            sframeChan.on('Q_SET_ATTRIBUTE', function (data, cb) {
                Cryptpad.setAttribute(data.key, data.value, function (e) {
                    cb({error:e});
                });
            });

            sframeChan.on('Q_DRIVE_GETDELETED', function (data, cb) {
                Cryptpad.getDeletedPads(data, function (err, obj) {
                    if (err) { return void console.error(err); }
                    cb(obj);
                });
            });

            sframeChan.on('Q_SESSIONSTORAGE_PUT', function (data, cb) {
                sessionStorage[data.key] = data.value;
                cb();
            });

            sframeChan.on('Q_IS_ONLY_IN_SHARED_FOLDER', function (data, cb) {
                Cryptpad.isOnlyInSharedFolder(secret.channel, function (err, t) {
                    if (err) { return void cb({error: err}); }
                    cb(t);
                });
            });

            // Present mode URL
            sframeChan.on('Q_PRESENT_URL_GET_VALUE', function (data, cb) {
                var parsed = Utils.Hash.parsePadUrl(window.location.href);
                cb(parsed.hashData && parsed.hashData.present);
            });
            sframeChan.on('EV_PRESENT_URL_SET_VALUE', function (data) {
                var parsed = Utils.Hash.parsePadUrl(window.location.href);
                window.location.href = parsed.getUrl({
                    embed: parsed.hashData.embed,
                    present: data
                });
            });


            // File upload
            var onFileUpload = function (sframeChan, data, cb) {
                require(['/common/outer/upload.js'], function (Files) {
                    var sendEvent = function (data) {
                        sframeChan.event("EV_FILE_UPLOAD_STATE", data);
                    };
                    var updateProgress = function (progressValue) {
                        sendEvent({
                            progress: progressValue
                        });
                    };
                    var onComplete = function (href) {
                        sendEvent({
                            complete: true,
                            href: href
                        });
                    };
                    var onError = function (e) {
                        sendEvent({
                            error: e
                        });
                    };
                    var onPending = function (cb) {
                        sframeChan.query('Q_CANCEL_PENDING_FILE_UPLOAD', null, function (err, data) {
                            if (data) {
                                cb();
                            }
                        });
                    };
                    data.blob = Crypto.Nacl.util.decodeBase64(data.blob);
                    Files.upload(data, data.noStore, Cryptpad, updateProgress, onComplete, onError, onPending);
                    cb();
                });
            };
            sframeChan.on('Q_UPLOAD_FILE', function (data, cb) {
                onFileUpload(sframeChan, data, cb);
            });

            // File picker
            var FP = {};
            var initFilePicker = function (cfg) {
                // cfg.hidden means pre-loading the filepicker while keeping it hidden.
                // if cfg.hidden is true and the iframe already exists, do nothing
                if (!FP.$iframe) {
                    var config = {};
                    config.onFilePicked = function (data) {
                        sframeChan.event('EV_FILE_PICKED', data);
                    };
                    config.onClose = function () {
                        FP.$iframe.hide();
                    };
                    config.onFileUpload = onFileUpload;
                    config.types = cfg;
                    config.addCommonRpc = addCommonRpc;
                    config.modules = {
                        Cryptpad: Cryptpad,
                        SFrameChannel: SFrameChannel,
                        Utils: Utils
                    };
                    FP.$iframe = $('<iframe>', {id: 'sbox-filePicker-iframe'}).appendTo($('body'));
                    FP.picker = FilePicker.create(config);
                } else if (!cfg.hidden) {
                    FP.$iframe.show();
                    FP.picker.refresh(cfg);
                }
                if (cfg.hidden) {
                    FP.$iframe.hide();
                    return;
                }
                FP.$iframe.focus();
            };
            sframeChan.on('EV_FILE_PICKER_OPEN', function (data) {
                initFilePicker(data);
            });

            sframeChan.on('Q_TEMPLATE_USE', function (data, cb) {
                Cryptpad.useTemplate(data, Cryptget, cb);
            });
            sframeChan.on('Q_TEMPLATE_EXIST', function (type, cb) {
                Cryptpad.listTemplates(type, function (err, templates) {
                    cb(templates.length > 0);
                });
            });
            var getKey = function (href, channel) {
                var parsed = Utils.Hash.parsePadUrl(href);
                return 'thumbnail-' + parsed.type + '-' + channel;
            };
            sframeChan.on('Q_CREATE_TEMPLATES', function (type, cb) {
                Cryptpad.getSecureFilesList({
                    types: [type],
                    where: ['template']
                }, function (err, data) {
                    // NOTE: Never return data directly!
                    if (err) { return void cb({error: err}); }

                    var res = [];
                    nThen(function (waitFor) {
                        Object.keys(data).map(function (el) {
                            var k = getKey(data[el].href, data[el].channel);
                            Utils.LocalStore.getThumbnail(k, waitFor(function (e, thumb) {
                                res.push({
                                    id: el,
                                    name: data[el].filename || data[el].title || '?',
                                    thumbnail: thumb,
                                    used: data[el].used || 0
                                });
                            }));
                        });
                    }).nThen(function () {
                        cb({data: res});
                    });
                });
            });

            sframeChan.on('EV_GOTO_URL', function (url) {
                if (url) {
                    window.location.href = url;
                } else {
                    window.location.reload();
                }
            });

            sframeChan.on('EV_OPEN_URL', function (url) {
                if (url) {
                    window.open(url);
                }
            });

            sframeChan.on('Q_PIN_GET_USAGE', function (data, cb) {
                Cryptpad.isOverPinLimit(function (err, overLimit, data) {
                    cb({
                        error: err,
                        data: data
                    });
                });
            });

            sframeChan.on('Q_LANGUAGE_SET', function (data, cb) {
                Cryptpad.setLanguage(data, cb);
            });

            sframeChan.on('Q_CLEAR_OWNED_CHANNEL', function (channel, cb) {
                Cryptpad.clearOwnedChannel(channel, cb);
            });
            sframeChan.on('Q_REMOVE_OWNED_CHANNEL', function (channel, cb) {
                Cryptpad.removeOwnedChannel(channel, cb);
            });

            sframeChan.on('Q_GET_ALL_TAGS', function (data, cb) {
                Cryptpad.listAllTags(function (err, tags) {
                    cb({
                        error: err,
                        tags: tags
                    });
                });
            });

            sframeChan.on('Q_PAD_PASSWORD_CHANGE', function (data, cb) {
                var href = data.href || window.location.href;
                Cryptpad.changePadPassword(Cryptget, href, data.password, edPublic, cb);
            });

            sframeChan.on('Q_CHANGE_USER_PASSWORD', function (data, cb) {
                Cryptpad.changeUserPassword(Cryptget, edPublic, data, cb);
            });

            sframeChan.on('Q_WRITE_LOGIN_BLOCK', function (data, cb) {
                Cryptpad.writeLoginBlock(data, cb);
            });

            sframeChan.on('Q_REMOVE_LOGIN_BLOCK', function (data, cb) {
                Cryptpad.removeLoginBlock(data, cb);
            });

            var cgNetwork;
            var whenCGReady = function (cb) {
                if (cgNetwork && cgNetwork !== true) { console.log(cgNetwork); return void cb(); }
                setTimeout(function () {
                    whenCGReady(cb);
                }, 500);
            };
            var i = 0;
            sframeChan.on('Q_CRYPTGET', function (data, cb) {
                var todo = function () {
                    data.opts.network = cgNetwork;
                    Cryptget.get(data.hash, function (err, val) {
                        cb({
                            error: err,
                            data: val
                        });
                    }, data.opts);
                };
                //return void todo();
                if (i > 30) {
                    i = 0;
                    cgNetwork = undefined;
                }
                i++;
                if (!cgNetwork) {
                    cgNetwork = true;
                    return void Cryptpad.makeNetwork(function (err, nw) {
                        console.log(nw);
                        cgNetwork = nw;
                        todo();
                    });
                } else if (cgNetwork === true) {
                    return void whenCGReady(todo);
                }
                todo();
            });
            sframeChan.on('EV_CRYPTGET_DISCONNECT', function () {
                if (!cgNetwork) { return; }
                cgNetwork.disconnect();
                cgNetwork = undefined;
            });

            if (cfg.addRpc) {
                cfg.addRpc(sframeChan, Cryptpad, Utils);
            }

            sframeChan.on('Q_CURSOR_OPENCHANNEL', function (data, cb) {
                Cryptpad.cursor.execCommand({
                    cmd: 'INIT_CURSOR',
                    data: {
                        channel: data,
                        secret: secret
                    }
                }, cb);
            });
            Cryptpad.cursor.onEvent.reg(function (data) {
                sframeChan.event('EV_CURSOR_EVENT', data);
            });
            sframeChan.on('Q_CURSOR_COMMAND', function (data, cb) {
                Cryptpad.cursor.execCommand(data, cb);
            });

            Cryptpad.mailbox.onEvent.reg(function (data) {
                sframeChan.event('EV_MAILBOX_EVENT', data);
            });
            sframeChan.on('Q_MAILBOX_COMMAND', function (data, cb) {
                Cryptpad.mailbox.execCommand(data, cb);
            });

            Cryptpad.onTimeoutEvent.reg(function () {
                sframeChan.event('EV_WORKER_TIMEOUT');
            });

            if (cfg.messaging) {
                Notifier.getPermission();

                sframeChan.on('Q_CHAT_OPENPADCHAT', function (data, cb) {
                    Cryptpad.messenger.execCommand({
                        cmd: 'OPEN_PAD_CHAT',
                        data: {
                            channel: data,
                            secret: secret
                        }
                    }, cb);
                });
                sframeChan.on('Q_CHAT_COMMAND', function (data, cb) {
                    Cryptpad.messenger.execCommand(data, cb);
                });
                Cryptpad.messenger.onEvent.reg(function (data) {
                    sframeChan.event('EV_CHAT_EVENT', data);
                });
            }

            // Chrome 68 on Mac contains a bug resulting in the page turning white after a few seconds
            try {
                if (navigator.platform.toUpperCase().indexOf('MAC') >= 0 &&
                    !localStorage.CryptPad_chrome68) {
                    var isChrome = !!window.chrome && !!window.chrome.webstore;
                    var getChromeVersion = function () {
                        var raw = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
                        return raw ? parseInt(raw[2], 10) : false;
                    };
                    if (isChrome && getChromeVersion() === 68) {
                        sframeChan.whenReg('EV_CHROME_68', function () {
                            sframeChan.event("EV_CHROME_68");
                            localStorage.CryptPad_chrome68 = "1";
                        });
                    }
                }
            } catch (e) {}



            // Join the netflux channel
            var rtStarted = false;
            var startRealtime = function (rtConfig) {
                rtConfig = rtConfig || {};
                rtStarted = true;
                var replaceHash = function (hash) {
                    if (window.history && window.history.replaceState) {
                        if (!/^#/.test(hash)) { hash = '#' + hash; }
                        window.history.replaceState({}, window.document.title, hash);
                        if (typeof(window.onhashchange) === 'function') {
                            window.onhashchange();
                        }
                        return;
                    }
                    window.location.hash = hash;
                };

                var cpNfCfg = {
                    sframeChan: sframeChan,
                    channel: secret.channel,
                    padRpc: Cryptpad.padRpc,
                    validateKey: secret.keys.validateKey || undefined,
                    isNewHash: isNewHash,
                    readOnly: readOnly,
                    crypto: Crypto.createEncryptor(secret.keys),
                    onConnect: function () {
                        if (window.location.hash && window.location.hash !== '#') {
                            /*window.location = parsed.getUrl({
                                present: parsed.hashData.present,
                                embed: parsed.hashData.embed
                            });*/
                            return;
                        }
                        if (readOnly || cfg.noHash) { return; }
                        replaceHash(Utils.Hash.getEditHashFromKeys(secret));
                    }
                };

                nThen(function (waitFor) {
                    if (isNewFile && cfg.owned && !window.location.hash) {
                        Cryptpad.getMetadata(waitFor(function (err, m) {
                            cpNfCfg.owners = [m.priv.edPublic];
                        }));
                    } else if (isNewFile && !cfg.useCreationScreen && window.location.hash) {
                        console.log("new file with hash in the address bar in an app without pcs and which requires owners");
                        sframeChan.onReady(function () {
                            sframeChan.query("EV_LOADING_ERROR", "DELETED");
                        });
                        waitFor.abort();
                    }
                }).nThen(function () {
                    Object.keys(rtConfig).forEach(function (k) {
                        cpNfCfg[k] = rtConfig[k];
                    });
                    CpNfOuter.start(cpNfCfg);
                });
            };

            sframeChan.on('Q_CREATE_PAD', function (data, cb) {
                if (!isNewFile || rtStarted) { return; }
                // Create a new hash
                password = data.password;
                var newHash = Utils.Hash.createRandomHash(parsed.type, password);
                secret = Utils.secret = Utils.Hash.getSecrets(parsed.type, newHash, password);
                Utils.crypto = Utils.Crypto.createEncryptor(Utils.secret.keys);

                // Update the hash in the address bar
                var ohc = window.onhashchange;
                window.onhashchange = function () {};
                window.location.hash = newHash;
                window.onhashchange = ohc;
                ohc({reset: true});

                // Update metadata values and send new metadata inside
                parsed = Utils.Hash.parsePadUrl(window.location.href);
                defaultTitle = Utils.Hash.getDefaultName(parsed);
                hashes = Utils.Hash.getHashes(secret);
                readOnly = false;
                updateMeta();

                var rtConfig = {};
                if (data.owned) {
                    rtConfig.owners = [edPublic];
                }
                if (data.expire) {
                    rtConfig.expire = data.expire;
                }
                Utils.rtConfig = rtConfig;
                nThen(function(waitFor) {
                    if (data.templateId) {
                        if (data.templateId === -1) {
                            initialPathInDrive = ['template'];
                            return;
                        }
                        Cryptpad.getPadData(data.templateId, waitFor(function (err, d) {
                            data.template = d.href;
                        }));
                    }
                }).nThen(function () {
                    if (data.template) {
                        // Pass rtConfig to useTemplate because Cryptput will create the file and
                        // we need to have the owners and expiration time in the first line on the
                        // server
                        var cryptputCfg = $.extend(true, {}, rtConfig, {password: password});
                        Cryptpad.useTemplate({
                            href: data.template
                        }, Cryptget, function () {
                            startRealtime();
                            cb();
                        }, cryptputCfg);
                        return;
                    }
                    // Start realtime outside the iframe and callback
                    startRealtime(rtConfig);
                    cb();
                });
            });

            sframeChan.ready();

            Utils.Feedback.reportAppUsage();

            if (!realtime && !Test.testing) { return; }
            if (isNewFile && cfg.useCreationScreen && !Test.testing) { return; }
            //if (isNewFile && Utils.LocalStore.isLoggedIn()
            //    && AppConfig.displayCreationScreen && cfg.useCreationScreen) { return; }

            startRealtime();
        });
    };

    return common;
});