'use strict';

/* global Clipboard */

// poor man's async
function asyncForEach(items, handler, callback) {
    var cur = 0;

    if (items.length === 0) return callback();

    (function iterator() {
        handler(items[cur], function () {
            if (cur >= items.length-1) return callback();
            ++cur;

            iterator();
        });
    })();
}

angular.module('Application').controller('UsersController', ['$scope', '$location', '$timeout', 'Client', function ($scope, $location, $timeout, Client) {
    Client.onReady(function () { if (!Client.getUserInfo().admin) $location.path('/'); });

    $scope.ready = false;
    $scope.users = [];
    $scope.groups = [];
    $scope.groupsById = { };
    $scope.config = Client.getConfig();
    $scope.userInfo = Client.getUserInfo();
    $scope.emailDomains = [];

    // FIXME this needs a whole lot of rework as it is used for alias ui, which now needs to be multidomain aware
    $scope.mailConfig = {
        enabled: false
    };

    $scope.userremove = {
        busy: false,
        error: {},
        userInfo: {},
        password: '',

        show: function (userInfo) {
            $scope.userremove.error.username = null;
            $scope.userremove.error.password = null;
            $scope.userremove.password = '';
            $scope.userremove.userInfo = userInfo;

            $scope.userremove_form.$setPristine();
            $scope.userremove_form.$setUntouched();

            $('#userRemoveModal').modal('show');
        },

        submit: function () {
            $scope.userremove.error.password = null;
            $scope.userremove.busy = true;

            Client.removeUser($scope.userremove.userInfo.id, $scope.userremove.password, function (error) {
                $scope.userremove.busy = false;

                if (error && error.statusCode === 403) {
                    $scope.userremove.error.password = 'Wrong password';
                    $scope.userremove.password = '';
                    $scope.userremove_form.password.$setPristine();
                    $('#inputUserRemovePassword').focus();
                    return;
                }
                if (error) return console.error('Unable to delete user.', error);

                $scope.userremove.userInfo = {};
                $scope.userremove.password = '';

                $scope.userremove_form.$setPristine();
                $scope.userremove_form.$setUntouched();

                refresh();

                $('#userRemoveModal').modal('hide');
            });
        }
    };

    $scope.useradd = {
        busy: false,
        alreadyTaken: false,
        error: {},
        email: '',
        username: '',
        displayName: '',
        sendInvite: true,

        show: function () {
            $scope.useradd.error = {};
            $scope.useradd.email = '';
            $scope.useradd.username = '';
            $scope.useradd.displayName = '';

            $scope.useradd_form.$setUntouched();
            $scope.useradd_form.$setPristine();

            $('#userAddModal').modal('show');
        },

        submit: function () {
            $scope.useradd.busy = true;

            $scope.useradd.alreadyTaken = false;
            $scope.useradd.error.email = null;
            $scope.useradd.error.username = null;
            $scope.useradd.error.displayName = null;

            Client.createUser($scope.useradd.username || null, $scope.useradd.email, $scope.useradd.displayName, $scope.useradd.sendInvite, function (error) {
                $scope.useradd.busy = false;

                if (error && error.statusCode === 409) {
                    if (error.message.toLowerCase().indexOf('email') !== -1) {
                        $scope.useradd.error.email = 'Email already taken';
                        $scope.useradd_form.email.$setPristine();
                        $('#inputUserAddEmail').focus();
                    } else if (error.message.toLowerCase().indexOf('username') !== -1 || error.message.toLowerCase().indexOf('mailbox') !== -1) {
                        $scope.useradd.error.username = 'Username already taken';
                        $scope.useradd_form.username.$setPristine();
                        $('#inputUserAddUsername').focus();
                    } else {
                        // should not happen!!
                        console.error(error.message);
                    }
                    return;
                }
                if (error && error.statusCode === 400) {
                    if (error.message.toLowerCase().indexOf('email') !== -1) {
                        $scope.useradd.error.email = 'Invalid Email';
                        $scope.useradd.error.emailAttempted = $scope.useradd.email;
                        $scope.useradd_form.email.$setPristine();
                        $('#inputUserAddEmail').focus();
                    } else if (error.message.toLowerCase().indexOf('username') !== -1) {
                        $scope.useradd.error.username = error.message;
                        $scope.useradd_form.username.$setPristine();
                        $('#inputUserAddUsername').focus();
                    } else {
                        console.error('Unable to create user.', error.statusCode, error.message);
                    }
                    return;
                }
                if (error) return console.error('Unable to create user.', error.statusCode, error.message);

                $scope.useradd.error = {};
                $scope.useradd.email = '';
                $scope.useradd.username = '';
                $scope.useradd.displayName = '';

                $scope.useradd_form.$setUntouched();
                $scope.useradd_form.$setPristine();

                refresh();

                $('#userAddModal').modal('hide');
            });
        }
    };

    $scope.useredit = {
        busy: false,
        busyFetching: false,
        error: {},
        userInfo: {},
        email: '',
        fallbackEmail: '',
        aliases: {},
        emailAddresses: [],
        availableEmailAddresses: [],
        superuser: false,

        show: function (userInfo) {
            $scope.useredit.busyFetching = true;
            $scope.useredit.error = {};
            $scope.useredit.email = userInfo.email;
            $scope.useredit.fallbackEmail = userInfo.fallbackEmail;
            $scope.useredit.userInfo = userInfo;
            $scope.useredit.groupIds = angular.copy(userInfo.groupIds);
            $scope.useredit.superuser = userInfo.groupIds.indexOf('admin') !== -1;

            $scope.useredit.availableEmailAddresses = $scope.emailDomains.map(function (d) { return userInfo.username + '@' + d.domain; });
            $scope.useredit.emailAddresses = [];
            $scope.useredit.aliases = {};

            // fetch user's mailboxes and aliases
            var tmp = [];
            asyncForEach($scope.emailDomains, function (domain, callback) {
                Client.getUserMailbox(domain.domain, userInfo.id, function (error) {
                    if (error) return callback();

                    var emailAddress = userInfo.username + '@' + domain.domain;
                    tmp.push(emailAddress);

                    Client.getAliases(domain.domain, userInfo.id, function (error, result) {
                        if (error) return callback();

                        $scope.useredit.aliases[emailAddress] = result.join(',');

                        callback();
                    });
                });
            }, function (error) {
                $scope.useredit.busyFetching = false;

                if (error) return console.error(error);

                // we need this copy as angular multiselect cannot deal with dynamic arrays!
                $scope.useredit.emailAddresses = tmp;
            });

            $scope.useredit_form.$setPristine();
            $scope.useredit_form.$setUntouched();

            // clear any alias error when the model changes. this is required because tagInput directive is not angular forms aware
            // http://blog.revolunet.com/blog/2013/11/28/create-resusable-angularjs-input-component/ has some notes on how to do that
            $scope.$watch('useredit.aliases', function () {
                $scope.useredit.error.aliases = null;
            });

            $('#userEditModal').modal('show');
        },

        toggleGroup: function (group) {
            var pos = $scope.useredit.groupIds.indexOf(group.id);
            if (pos === -1) {
                $scope.useredit.groupIds.push(group.id);
            } else {
                $scope.useredit.groupIds.splice(pos, 1);
            }
        },

        submit: function () {
            $scope.useredit.error = {};
            $scope.useredit.busy = true;

            var data = {
                id: $scope.useredit.userInfo.id,
                email: $scope.useredit.email,
                fallbackEmail: $scope.useredit.fallbackEmail
            };

            Client.updateUser(data, function (error) {
                if (error) {
                    $scope.useredit.busy = false;

                    if (error.statusCode === 409) {
                        $scope.useredit.error.email = 'Email already taken';
                        $scope.useredit_form.email.$setPristine();
                        $('#inputUserEditEmail').focus();
                    } else {
                        console.error('Unable to update user:', error);
                    }

                    return;
                }

                if ($scope.useredit.superuser) {
                    if ($scope.useredit.groupIds.indexOf('admin') === -1) $scope.useredit.groupIds.push('admin');
                } else {
                    $scope.useredit.groupIds = $scope.useredit.groupIds.filter(function (groupId) { return groupId !== 'admin'; });
                }

                Client.setGroups(data.id, $scope.useredit.groupIds, function (error) {
                    if (error) return console.error('Unable to update groups for user:', error);

                    asyncForEach($scope.useredit.availableEmailAddresses, function (address, callback) {
                        var isEnabled = !!$scope.useredit.emailAddresses.find(function (a) { return a === address; });
                        var userId = $scope.useredit.userInfo.id;

                        var domain = $scope.emailDomains.find(function (d) { return address.split('@')[1] === d.domain; });
                        if (!domain) console.error('Domain not found. Internal error should not happen.');

                        var aliases = $scope.useredit.aliases[address] ? $scope.useredit.aliases[address].split(',') : [];

                        Client.setAliases(domain.domain, userId, aliases, function (error) {
                            if (error) return callback(error);

                            // TODO we could be smarter and check if the selection has actually changed
                            if (isEnabled) Client.enableUserMailbox(domain.domain, userId, callback);
                            else Client.disableUserMailbox(domain.domain, userId, callback);
                        });
                    }, function (error) {
                        $scope.useredit.busy = false;

                        if (error) return console.error('unable to adjust email addresses.', error);

                        $scope.useredit.userInfo = {};
                        $scope.useredit.email = '';
                        $scope.useredit.superuser = false;
                        $scope.useredit.groupIds = [];
                        $scope.useredit.emailAddresses = [];
                        $scope.useredit.aliases = '';

                        $scope.useredit_form.$setPristine();
                        $scope.useredit_form.$setUntouched();

                        refresh();

                        $('#userEditModal').modal('hide');
                    });
                });
            });
        }
    };

    $scope.showBubble = function ($event) {
        $($event.target).tooltip('show');

        setTimeout(function () {
            $($event.target).tooltip('hide');
        }, 2000);
    };

    $scope.groupAdd = {
        busy: false,
        error: {},
        name: '',

        show: function () {
            $scope.groupAdd.busy = false;

            $scope.groupAdd.error = {};
            $scope.groupAdd.name = '';

            $scope.groupAddForm.$setUntouched();
            $scope.groupAddForm.$setPristine();

            $('#groupAddModal').modal('show');
        },

        submit: function () {
            $scope.groupAdd.busy = true;
            $scope.groupAdd.error = {};

            Client.createGroup($scope.groupAdd.name, function (error) {
                $scope.groupAdd.busy = false;

                if (error && error.statusCode === 409) {
                    $scope.groupAdd.error.name = 'Name already taken';
                    $scope.groupAddForm.name.$setPristine();
                    $('#groupAddName').focus();
                    return;
                }
                if (error && error.statusCode === 400) {
                    $scope.groupAdd.error.name = error.message;
                    $scope.groupAddForm.name.$setPristine();
                    $('#groupAddName').focus();
                    return;
                }
                if (error) return console.error('Unable to create group.', error.statusCode, error.message);

                refresh();
                $('#groupAddModal').modal('hide');
            });
        }
    };

    $scope.inviteSent = {
        email: '',
        setupLink: ''
    };

    $scope.groupEdit = {
        busy: false,
        busyFetching: false,
        error: {},
        group: null,
        lists: [],
        availableLists: [],

        show: function (group) {
            $scope.groupEdit.busy = false;
            $scope.groupEdit.busyFetching = true;
            $scope.groupEdit.error = {};
            $scope.groupEdit.availableLists = $scope.emailDomains.map(function (domain) { return { domain: domain, address: group.name + '@' + domain.domain }; });
            $scope.groupEdit.selectedLists = [];
            $scope.groupEdit.currentLists = [];

            $scope.groupEdit.group = angular.copy(group);

            var tmp = [];
            asyncForEach($scope.emailDomains, function (domain, callback) {
                Client.getMailingList(domain.domain, $scope.groupEdit.group.id, function (error) {
                    if (error) return callback(error);

                    var list = $scope.groupEdit.availableLists.find(function (list) { return list.domain.domain === domain.domain; });
                    tmp.push(list);
                    $scope.groupEdit.currentLists.push(list);

                    callback();
                });
            }, function (error) {
                $scope.groupEdit.busyFetching = false;

                if (error) return console.error('Unable to get mailing lists.', error);

                $scope.groupEdit.selectedLists = tmp;
            });

            $scope.groupEditForm.$setUntouched();
            $scope.groupEditForm.$setPristine();

            $('#groupEditModal').modal('show');
        },

        submit: function () {
            $scope.groupEdit.busy = true;

            var addedLists = $scope.groupEdit.selectedLists.filter(function (s) {
                return !$scope.groupEdit.currentLists.find(function (c) {
                    return c.domain.domain === s.domain.domain;
                });
            });
            var removedLists = $scope.groupEdit.currentLists.filter(function (c) {
                return !$scope.groupEdit.selectedLists.find(function (s) {
                    return s.domain.domain === c.domain.domain;
                });
            });

            asyncForEach(addedLists, function (list, callback) {
                Client.addMailingList(list.domain.domain, $scope.groupEdit.group.id, callback);
            }, function (error) {
                if (error) {
                    $scope.groupEdit.busy = false;
                    return console.error('Failed to add group to mailinglists.', error);
                }

                asyncForEach(removedLists, function (list, callback) {
                    Client.removeMailingList(list.domain.domain, $scope.groupEdit.group.id, callback);
                }, function (error) {
                    $scope.groupEdit.busy = false;
                    if (error) {
                        return console.error('Failed to remove group to mailinglists.', error);
                    }

                    $('#groupEditModal').modal('hide');
                });
            });
        }
    };

    $scope.groupRemove = {
        busy: false,
        error: {},
        group: null,
        password: '',
        memberCount: 0,

        show: function (group) {
            $scope.groupRemove.busy = false;

            $scope.groupRemove.error = {};
            $scope.groupRemove.password = '';

            $scope.groupRemove.group = angular.copy(group);

            $scope.groupRemoveForm.$setUntouched();
            $scope.groupRemoveForm.$setPristine();

            Client.getGroup(group.id, function (error, result) {
                if (error) return console.error('Unable to fetch group information.', error.statusCode, error.message);

                $scope.groupRemove.memberCount = result.userIds.length;

                $('#groupRemoveModal').modal('show');
            });
        },

        submit: function () {
            $scope.groupRemove.busy = true;
            $scope.groupRemove.error = {};

            Client.removeGroup($scope.groupRemove.group.id, $scope.groupRemove.password, function (error) {
                $scope.groupRemove.busy = false;

                if (error && error.statusCode === 403) {
                    $scope.groupRemove.error.password = 'Wrong password';
                    $scope.groupRemove.password = '';
                    $scope.groupRemoveForm.password.$setPristine();
                    $('#groupRemovePasswordInput').focus();
                    return;
                }
                if (error) return console.error('Unable to remove group.', error.statusCode, error.message);

                refresh();
                $('#groupRemoveModal').modal('hide');
            });
        }
    };

    $scope.isMe = function (user) {
        return user.username === Client.getUserInfo().username;
    };

    $scope.isAdmin = function (user) {
        return !!user.admin;
    };

    $scope.sendInvite = function (user) {
        $scope.inviteSent.email = user.fallbackEmail;
        $scope.inviteSent.setupLink = '';

        Client.sendInvite(user, function (error, resetToken) {
            if (error) return console.error(error);

            // Client.notify('', 'Invitation was successfully sent to ' + user.email + '.', false, 'success');

            $scope.inviteSent.setupLink = location.origin + '/api/v1/session/account/setup.html?reset_token=' + resetToken;
            $('#inviteSentModal').modal('show');
        });
    };

    $scope.copyToClipboard = function (value) {

        document.execCommand('copy');
    };

    function refresh() {
        Client.getGroups(function (error, result) {
            if (error) return console.error('Unable to get group listing.', error);

            $scope.groups = result;
            $scope.groupsById = { };
            for (var i = 0; i < result.length; i++) {
                $scope.groupsById[result[i].id] = result[i];
            }

            Client.getUsers(function (error, result) {
                if (error) return console.error('Unable to get user listing.', error);

                $scope.users = result;

                Client.getDomains(function (error, result) {
                    if (error) return console.error('Unable to get domain listing.', error);

                    // reset so we can push the fresh config
                    $scope.emailDomains = [];

                    asyncForEach(result, function (domain, callback) {
                        Client.getMailConfigForDomain(domain.domain, function (error, mailConfig) {
                            if (error) return callback(error);

                            domain.mailConfig = mailConfig;

                            // only collect domains where email is enabled
                            if (mailConfig.enabled) $scope.emailDomains.push(domain);

                            callback();
                        });
                    }, function (error) {
                        if (error) return console.error('Unable to get mail config for domains.', error);

                        $scope.ready = true;
                    });
                });
            });
        });
    }

    Client.onReady(refresh);

    // setup all the dialog focus handling
    ['userAddModal', 'userRemoveModal', 'userEditModal', 'groupAddModal', 'groupRemoveModal'].forEach(function (id) {
        $('#' + id).on('shown.bs.modal', function () {
            $(this).find("[autofocus]:first").focus();
        });
    });

    var clipboard = new Clipboard('#setupLinkButton');

    clipboard.on('success', function(e) {
        $('#setupLinkButton').tooltip({
            title: 'Copied!',
            trigger: 'manual'
        }).tooltip('show');

        $timeout(function () {  $('#setupLinkButton').tooltip('hide'); }, 2000);

        e.clearSelection();
    });

    clipboard.on('error', function(e) {
        $('#setupLinkButton').tooltip({
            title: 'Press Ctrl+C to copy',
            trigger: 'manual'
        }).tooltip('show');

        $timeout(function () {  $('#setupLinkButton').tooltip('hide'); }, 2000);
    });

    $('.modal-backdrop').remove();
}]);