define([
    'jquery',
    '/common/hyperscript.js',
    '/common/common-hash.js',
    '/common/common-interface.js',
    '/common/common-ui-elements.js',
    '/common/common-util.js',
    '/common/common-constants.js',
    '/customize/messages.js',
    '/bower_components/nthen/index.js'
], function ($, h, Hash, UI, UIElements, Util, Constants, Messages, nThen) {

    var handlers = {};

    var defaultDismiss = function (common, data) {
        return function (e) {
            if (e) {
                e.preventDefault();
                e.stopPropagation();
            }
            common.mailbox.dismiss(data, function (err) {
                if (err) { return void console.error(err); }
            });
        };
    };

    // Friend request

    handlers['FRIEND_REQUEST'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;
        var name = Util.fixHTML(msg.content.displayName) || Messages.anonymous;

        // Display the notification
        content.getFormatText = function () {
            return Messages._getKey('friendRequest_notification', [name]);
        };

        // Check authenticity
        if (msg.author !== msg.content.curvePublic) { return; }

        // if not archived, add handlers
        if (!content.archived) {
            content.handler = function () {
                UIElements.displayFriendRequestModal(common, data);
            };
            common.addFriendRequest(data);
        }
    };

    handlers['FRIEND_REQUEST_ACCEPTED'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;
        var name = Util.fixHTML(msg.content.name) || Messages.anonymous;
        content.getFormatText = function () {
            return Messages._getKey('friendRequest_accepted', [name]);
        };
        if (!content.archived) {
            content.dismissHandler = defaultDismiss(common, data);
        }
    };

    handlers['FRIEND_REQUEST_DECLINED'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;
        var name = Util.fixHTML(msg.content.name) || Messages.anonymous;
        content.getFormatText = function () {
            return Messages._getKey('friendRequest_declined', [name]);
        };
        if (!content.archived) {
            content.dismissHandler = defaultDismiss(common, data);
        }
    };

    // Share pad

    handlers['SHARE_PAD'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;
        var type = Hash.parsePadUrl(msg.content.href).type;
        var key = type === 'drive' ? 'notification_folderShared' :
                    (type === 'file' ? 'notification_fileShared' :
                    'notification_padShared');
        var name = Util.fixHTML(msg.content.name) || Messages.anonymous;
        var title = Util.fixHTML(msg.content.title);
        content.getFormatText = function () {
            return Messages._getKey(key, [name, title]);
        };
        content.handler = function () {
            var todo = function () {
                common.openURL(msg.content.href);
                defaultDismiss(common, data)();
            };
            nThen(function (waitFor) {
                if (msg.content.isTemplate) {
                    common.sessionStorage.put(Constants.newPadPathKey, ['template'], waitFor());
                }
                if (msg.content.password) {
                    common.sessionStorage.put('newPadPassword', msg.content.password, waitFor());
                }
            }).nThen(function () {
                todo();
            });
        };
        if (!content.archived) {
            content.dismissHandler = defaultDismiss(common, data);
        }
    };

    // New support message from the admins
    handlers['SUPPORT_MESSAGE'] = function (common, data) {
        var content = data.content;
        content.getFormatText = function () {
            return Messages.support_notification;
        };
        content.handler = function () {
            common.openURL('/support/');
            defaultDismiss(common, data)();
        };
    };

    handlers['REQUEST_PAD_ACCESS'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;

        // Check authenticity
        if (msg.author !== msg.content.user.curvePublic) { return; }

        // Display the notification
        var name = Util.fixHTML(msg.content.user.displayName) || Messages.anonymous;
        var title = Util.fixHTML(msg.content.title);
        content.getFormatText = function () {
            return Messages._getKey('requestEdit_request', [title, name]);
        };

        // if not archived, add handlers
        content.handler = function () {
            var metadataMgr = common.getMetadataMgr();
            var priv = metadataMgr.getPrivateData();

            var link = h('a', {
                href: '#'
            }, Messages.requestEdit_viewPad);
            var verified = h('p');
            var $verified = $(verified);

            var name = Util.fixHTML(msg.content.user.displayName) || Messages.anonymous;
            var title = Util.fixHTML(msg.content.title);

            if (priv.friends && priv.friends[msg.author]) {
                $verified.addClass('cp-notifications-requestedit-verified');
                var f = priv.friends[msg.author];
                $verified.append(h('span.fa.fa-certificate'));
                var $avatar = $(h('span.cp-avatar')).appendTo($verified);
                $verified.append(h('p', Messages._getKey('requestEdit_fromFriend', [f.displayName])));
                common.displayAvatar($avatar, f.avatar, f.displayName);
            } else {
                $verified.append(Messages._getKey('requestEdit_fromStranger', [name]));
            }

            var div = h('div', [
                UI.setHTML(h('p'), Messages._getKey('requestEdit_confirm', [title, name])),
                verified,
                link
            ]);
            $(link).click(function (e) {
                e.preventDefault();
                e.stopPropagation();
                common.openURL(msg.content.href);
            });
            UI.confirm(div, function (yes) {
                if (!yes) { return; }
                common.getSframeChannel().event('EV_GIVE_ACCESS', {
                    channel: msg.content.channel,
                    user: msg.content.user
                });
                defaultDismiss(common, data)();
            }, {
                ok: Messages.friendRequest_accept,
                cancel: Messages.later
            });
        };

        if (!content.archived) {
            content.dismissHandler = defaultDismiss(common, data);
        }
    };

    handlers['GIVE_PAD_ACCESS'] = function (common, data) {
        var content = data.content;
        var msg = content.msg;

        // Check authenticity
        if (msg.author !== msg.content.user.curvePublic) { return; }

        if (!msg.content.href) { return; }

        var name = Util.fixHTML(msg.content.user.displayName) || Messages.anonymous;
        var title = Util.fixHTML(msg.content.title);

        // Display the notification
        content.getFormatText = function () {
            return Messages._getKey('requestEdit_accepted', [title, name]);
        };

        // if not archived, add handlers
        content.handler = function () {
            common.openURL(msg.content.href);
            defaultDismiss(common, data)();
        };
    };

    // NOTE: don't forget to fixHTML everything returned by "getFormatText"

    return {
        add: function (common, data) {
            var type = data.content.msg.type;

            if (handlers[type]) {
                handlers[type](common, data);
                // add getters to access simply some informations
                data.content.isClickable = typeof data.content.handler === "function";
                data.content.isDismissible = typeof data.content.dismissHandler === "function";
            }
        },
        remove: function (common, data) {
            common.removeFriendRequest(data.hash);
        },
    };
});