'use strict';

/* global angular */
/* global $ */
/* global async */

angular.module('Application').controller('EmailController', ['$scope', '$location', '$translate', '$timeout', '$route', '$routeParams', 'Client', function ($scope, $location, $translate, $timeout, $route, $routeParams, Client) {
    Client.onReady(function () { if (!Client.getUserInfo().isAtLeastMailManager) $location.path('/'); });

    $scope.user = Client.getUserInfo();

    // Avoid full reload on path change
    // https://stackoverflow.com/a/22614334
    // reloadOnUrl: false in $routeProvider did not work!
    var lastRoute = $route.current;
    $scope.$on('$locationChangeSuccess', function (/* event */) {
        if (lastRoute.$$route.originalPath === $route.current.$$route.originalPath) {
            $route.current = lastRoute;
        }
    });

    var domainName = $routeParams.domain;
    if (!domainName) return $location.path('/email');

    $scope.setView = function (view, setAlways) {
        if (!setAlways && !$scope.ready) return;
        if ($scope.view === view) return;

        $route.updateParams({ view: view });
        $scope.view = view;
        $scope.activeTab = view;
    };

    $scope.ready = false;
    $scope.refreshBusy = true;
    $scope.client = Client;
    $scope.user = Client.getUserInfo();
    $scope.config = Client.getConfig();
    $scope.apps = Client.getInstalledApps();
    $scope.owners = []; // users + groups
    $scope.incomingDomains = [];
    $scope.domain = null;
    $scope.adminDomain = null;
    $scope.diskUsage = {};
    $scope.storageQuotaTicks = [ 1*1024*1024*1024, 15*1024*1024*1024, 50*1024*1024*1024, 100*1024*1024*1024 ];

    $scope.expectedDnsRecords = {
        mx: { },
        dkim: { },
        spf: { },
        dmarc: { },
        ptr: { }
    };

    $scope.expectedDnsRecordsTypes = [
        { name: 'MX', value: 'mx' },
        { name: 'DKIM', value: 'dkim' },
        { name: 'SPF', value: 'spf' },
        { name: 'DMARC', value: 'dmarc' },
        { name: 'PTR', value: 'ptr' }
    ];

    $scope.openSubscriptionSetup = function () {
        Client.openSubscriptionSetup($scope.$parent.subscription);
    };

    $scope.catchall = {
        mailboxes: [],
        availableMailboxes: [],
        busy: false,

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

            var addresses = $scope.catchall.mailboxes.map(function (m) { return m.name; });

            Client.setCatchallAddresses($scope.domain.domain, addresses, function (error) {
                if (error) console.error('Unable to add catchall address.', error);

                $timeout(function () { $scope.catchall.busy = false; }, 2000); // otherwise, it's too fast
            });
        },

        refresh: function () {
            Client.listMailboxes($scope.domain.domain, '', 1, 1000, function (error, result) {
                if (error) return console.error(error);

                $scope.catchall.availableMailboxes = result;

                $scope.catchall.mailboxes = $scope.domain.mailConfig.catchAll.map(function (name) {
                    return $scope.catchall.availableMailboxes.find(function (m) { return m.name === name; });
                }).filter(function (m) { return !!m; });
            });
        }
    };

    $scope.mailinglists = {
        busy: false,
        mailinglists: [],
        search: '',
        currentPage: 1,
        perPage: 10,

        add: {
            busy: false,
            error: {},
            name: '',
            membersTxt: '',
            membersOnly: false,

            reset: function () {
                $scope.mailinglists.add.busy = false;
                $scope.mailinglists.add.error = {};
                $scope.mailinglists.add.name = '';
                $scope.mailinglists.add.membersTxt = '';
            },

            show: function () {
                $scope.mailinglists.add.reset();
                $('#mailinglistAddModal').modal('show');
            },

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

                var members = $scope.mailinglists.add.membersTxt
                    .split(/[\n,]/)
                    .map(function (m) { return m.trim(); })
                    .filter(function (m) { return m.length !== 0; });

                Client.addMailingList($scope.domain.domain, $scope.mailinglists.add.name, members,  $scope.mailinglists.add.membersOnly, function (error) {
                    $scope.mailinglists.add.busy = false;
                    $scope.mailinglists.add.error = {};

                    if (error) {
                        if (error.statusCode === 400 && error.message.indexOf('member') !== -1) {
                            $scope.mailinglists.add.error.members = error.message;
                        } else {
                            $scope.mailinglists.add.error.name = error.message;
                        }
                        return;
                    }

                    $scope.mailinglists.add.reset();
                    $scope.mailinglists.refresh();

                    $('#mailinglistAddModal').modal('hide');
                });
            }
        },

        edit: {
            busy: false,
            error: {},
            name: '',
            membersTxt: '',
            membersOnly: false,
            active: true,

            show: function (list) {
                $scope.mailinglists.edit.name = list.name;
                $scope.mailinglists.edit.membersTxt = list.members.sort().join('\n');
                $scope.mailinglists.edit.membersOnly = list.membersOnly;
                $scope.mailinglists.edit.active = list.active;

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

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

                var members = $scope.mailinglists.edit.membersTxt.split(/[\n,]/)
                    .map(function (m) { return m.trim(); })
                    .filter(function (m) { return m.length !== 0; });

                Client.updateMailingList($scope.domain.domain, $scope.mailinglists.edit.name, members, $scope.mailinglists.edit.membersOnly, $scope.mailinglists.edit.active, function (error) {
                    $scope.mailinglists.edit.busy = false;
                    $scope.mailinglists.edit.error = {};

                    if (error) {
                        $scope.mailinglists.edit.error.members = error.message;
                        return;
                    }

                    $scope.mailinglists.refresh();

                    $('#mailinglistEditModal').modal('hide');
                });
            }
        },

        remove: {
            busy: false,
            list: null,

            show: function (list) {
                $scope.mailinglists.remove.list = list;

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

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

                Client.removeMailingList($scope.domain.domain, $scope.mailinglists.remove.list.name, function (error) {
                    $scope.mailinglists.remove.busy = false;

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

                    $scope.mailinglists.remove.list = null;
                    $scope.mailinglists.refresh();

                    $('#mailinglistRemoveModal').modal('hide');
                });
            }
        },

        refresh: function (callback) {
            callback = typeof callback === 'function' ? callback : function (error) { if (error) return console.error(error); };

            Client.listMailingLists($scope.domain.domain, $scope.mailinglists.search, $scope.mailinglists.currentPage, $scope.mailinglists.perPage, function (error, result) {
                if (error) return callback(error);

                $scope.mailinglists.mailinglists = result;

                callback();
            });
        },

        showNextPage: function () {
            $scope.mailinglists.currentPage++;
            $scope.mailinglists.refresh();
        },

        showPrevPage: function () {
            if ($scope.mailinglists.currentPage > 1) $scope.mailinglists.currentPage--;
            else $scope.mailinglists.currentPage = 1;
            $scope.mailinglists.refresh();
        },

        updateFilter: function (fresh) {
            if (fresh) $scope.mailinglists.currentPage = 1;
            $scope.mailinglists.refresh();
        }
    };

    $scope.mailFromValidation = {
        busy: false,

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

            Client.setMailFromValidation($scope.domain.domain, !$scope.domain.mailConfig.mailFromValidation, function (error) {
                if (error) {
                    $scope.mailFromValidation.busy = false;
                    return console.error(error);
                }

                // give sometime for the mail container to restart
                $timeout(function () {
                    $scope.mailFromValidation.busy = false;
                    $scope.refreshDomain();
                }, 5000);
            });
        }
    };

    $scope.banner = {
        busy: false,
        text: '',
        html: '',

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

            Client.setMailBanner($scope.domain.domain, { text: $scope.banner.text, html: $scope.banner.html }, function (error) {
                if (error) {
                    $scope.banner.busy = false;
                    return console.error(error);
                }

                // give sometime for the mail container to restart
                $timeout(function () {
                    $scope.banner.busy = false;
                    $scope.refreshDomain();
                }, 5000);
            });
        }
    };

    $scope.incomingEmail = {
        busy: false,
        setupDns: true,
        setupDnsBusy: false,

        toggleEmailEnabled: function () {
            if ($scope.domain.mailConfig.enabled) {
                $('#disableEmailModal').modal('show');
            } else {
                $('#enableEmailModal').modal('show');
            }
        },

        setDnsRecords: function (callback) {
            $scope.incomingEmail.setupDnsBusy = true;

            Client.setDnsRecords({ domain: $scope.domain.domain, type: 'mail' }, function (error) {
                if (error) console.error(error);

                $timeout(function () { $scope.incomingEmail.setupDnsBusy = false; }, 2000); // otherwise, it's too fast

                if (callback) callback();
            });
        },

        enable: function () {
            $('#enableEmailModal').modal('hide');

            $scope.incomingEmail.busy = true;

            Client.enableMailForDomain($scope.domain.domain, true , function (error) {
                if (error) return console.error(error);

                $scope.reconfigureEmailApps();

                let maybeSetupDns = $scope.incomingEmail.setupDns ? $scope.incomingEmail.setDnsRecords : function (next) { next(); };

                maybeSetupDns(function (error) {
                    if (error) return console.error(error);

                    $timeout(function () {
                        $scope.refreshDomain();
                        $scope.incomingEmail.busy = false;
                    }, 5000); // wait for mail container to restart. it cannot get IP otherwise while refreshing
                });
            });
        },

        disable: function () {
            $('#disableEmailModal').modal('hide');

            $scope.incomingEmail.busy = true;

            Client.enableMailForDomain($scope.domain.domain, false , function (error) {
                if (error) return console.error(error);

                $scope.reconfigureEmailApps();

                $timeout(function () {
                    $scope.refreshDomain();
                    $scope.incomingEmail.busy = false;
                }, 5000); // wait for mail container to restart. it cannot get IP otherwise while refreshing
            });
        }
    };

    $scope.mailboxImport = {
        busy: false,
        done: false,
        error: null,
        percent: 0,
        success: 0,
        mailboxes: [],

        reset: function () {
            $scope.mailboxImport.busy = false;
            $scope.mailboxImport.error = null;
            $scope.mailboxImport.mailboxes = [];
            $scope.mailboxImport.percent = 0;
            $scope.mailboxImport.success = 0;
            $scope.mailboxImport.done = false;
        },

        handleFileChanged: function () {
            $scope.mailboxImport.reset();

            var fileInput = document.getElementById('mailboxImportFileInput');
            if (!fileInput.files || !fileInput.files[0]) return;

            var file = fileInput.files[0];
            if (file.type !== 'application/json' && file.type !== 'text/csv') return console.log('Unsupported file type.');

            const reader = new FileReader();
            reader.addEventListener('load', function () {
                $scope.$apply(function () {
                    $scope.mailboxImport.mailboxes = [];
                    var mailboxes = [];

                    if (file.type === 'text/csv') {
                        var lines = reader.result.split('\n');
                        if (lines.length === 0) return $scope.mailboxImport.error = { file: 'Imported file has no lines' };

                        for (var i = 0; i < lines.length; i++) {
                            var line = lines[i].trim();
                            if (!line) continue;
                            var items = line.split(',');
                            if (items.length !== 4) {
                                $scope.mailboxImport.error = { file: 'Line ' + (i+1) + ' has wrong column count. Expecting 4' };
                                return;
                            }
                            mailboxes.push({
                                name: items[0].trim(),
                                domain: items[1].trim(),
                                owner: items[2].trim(),
                                ownerType: items[3].trim(),
                            });
                        }
                    } else {
                        try {
                            mailboxes = JSON.parse(reader.result).map(function (mailbox) {
                                return {
                                    name: mailbox.name,
                                    domain: mailbox.domain,
                                    owner: mailbox.owner,
                                    ownerType: mailbox.ownerType
                                };
                            });
                        } catch (e) {
                            console.error('Failed to parse mailboxes.', e);
                            $scope.mailboxImport.error = { file: 'Imported file is not valid JSON' };
                        }
                    }

                    $scope.mailboxImport.mailboxes = mailboxes;
                });
            }, false);
            reader.readAsText(file);
        },

        show: function () {
            $scope.mailboxImport.reset();

            // named so no duplactes
            document.getElementById('mailboxImportFileInput').addEventListener('change', $scope.mailboxImport.handleFileChanged);

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

        openFileInput: function () {
            $('#mailboxImportFileInput').click();
        },

        import: function () {
            $scope.mailboxImport.percent = 0;
            $scope.mailboxImport.success = 0;
            $scope.mailboxImport.done = false;
            $scope.mailboxImport.error = { import: [] };
            $scope.mailboxImport.busy = true;

            var processed = 0;

            async.eachSeries($scope.mailboxImport.mailboxes, function (mailbox, callback) {
                var owner = $scope.owners.find(function (o) { return o.display === mailbox.owner && o.type === mailbox.ownerType; }); // owner may not exist
                if (!owner) {
                    $scope.mailboxImport.error.import.push({ error: new Error('Could not detect owner'), mailbox: mailbox });
                    ++processed;
                    $scope.mailboxImport.percent = 100 * processed / $scope.mailboxImport.mailboxes.length;
                    return callback();
                }

                Client.addMailbox(mailbox.domain, mailbox.name, owner.id, mailbox.ownerType, function (error) {
                    if (error) $scope.mailboxImport.error.import.push({ error: error, mailbox: mailbox });
                    else ++$scope.mailboxImport.success;

                    ++processed;
                    $scope.mailboxImport.percent = 100 * processed / $scope.mailboxImport.mailboxes.length;

                    callback();
                });
            }, function (error) {
                if (error) return console.error(error);

                $scope.mailboxImport.busy = false;
                $scope.mailboxImport.done = true;
                if ($scope.mailboxImport.success) $scope.mailboxes.refresh();
            });
        }
    };

    $scope.mailboxExport = function (type) {
        // FIXME only does first 10k mailboxes
        Client.listMailboxes($scope.domain.domain, '', 1, 10000, function (error, result) {
            if (error) {
                Client.error('Failed to list mailboxes. Full error in the webinspector.');
                return console.error('Failed to list mailboxes.', error);
            }

            var content = '';

            if (type === 'json') {
                content = JSON.stringify(result.map(function (mailbox) {
                    var owner = $scope.owners.find(function (o) { return o.id === mailbox.ownerId; }); // owner may not exist

                    return {
                        name: mailbox.name,
                        domain: mailbox.domain,
                        owner: owner ? owner.display : '', // this meta property is set when we get the user list
                        ownerType: owner ? owner.type : '',
                        active: mailbox.active,
                        aliases: mailbox.aliases
                    };
                }), null, 2);
            } else if (type === 'csv') {
                content = result.map(function (mailbox) {
                    var owner = $scope.owners.find(function (o) { return o.id === mailbox.ownerId; }); // owner may not exist

                    var aliases = mailbox.aliases.map(function (a) { return a.name + '@' + a.domain; }).join(' ');
                    return [ mailbox.name, mailbox.domain, owner ? owner.display : '', owner ? owner.type : '', aliases, mailbox.active ].join(',');
                }).join('\n');
            } else {
                return;
            }

            var file = new Blob([ content ], { type: type === 'json' ? 'application/json' : 'text/csv' });
            var a = document.createElement('a');
            a.href = URL.createObjectURL(file);
            a.download = $scope.domain.domain.replaceAll('.','_') + '-mailboxes.' + type;
            document.body.appendChild(a);
            a.click();
        });
    };

    $scope.mailboxes = {
        mailboxes: [],
        search: '',
        currentPage: 1,
        perPage: 10,

        add: {
            error: null,
            busy: false,
            name: '',
            owner: null,

            reset: function () {
                $scope.mailboxes.add.busy = false;
                $scope.mailboxes.add.error = null;
                $scope.mailboxes.add.name = '';
                $scope.mailboxes.add.owner = null;
            },

            show: function () {
                $scope.mailboxes.add.reset();
                $('#mailboxAddModal').modal('show');
            },

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

                Client.addMailbox($scope.domain.domain, $scope.mailboxes.add.name, $scope.mailboxes.add.owner.id, $scope.mailboxes.add.owner.type, function (error) {
                    if (error) {
                        $scope.mailboxes.add.busy = false;
                        $scope.mailboxes.add.error = error;
                        return;
                    }

                    $scope.mailboxes.refresh();
                    $scope.catchall.refresh();

                    $('#mailboxAddModal').modal('hide');
                });
            }
        },

        edit: {
            busy: false,
            error: null,
            name: '',
            owner: null,
            incomingDomains: [],
            aliases: [],
            aliasesOriginal: [],
            active: true,
            enablePop3: false,
            storageQuota: 0,
            storageQuotaEnabled: false,

            addAlias: function (event) {
                event.preventDefault();

                $scope.mailboxes.edit.aliases.push({
                    name: '',
                    domain: domainName,
                    reversedSortingNotation: 'z'.repeat(100) // quick and dirty to ensure newly added are on bottom
                });
            },

            delAlias: function (event, alias) {
                event.preventDefault();

                var index = $scope.mailboxes.edit.aliases.findIndex(function (a) { return (a.name+a.domain) === (alias.name+alias.domain); });
                if (index === -1) return;

                $scope.mailboxes.edit.aliases.splice(index, 1);
            },

            show: function (mailbox) {
                $scope.mailboxes.edit.name = mailbox.name;
                $scope.mailboxes.edit.owner = mailbox.owner; // this can be null if mailbox had no owner
                $scope.mailboxes.edit.aliases = angular.copy(mailbox.aliases, []).map(function (a) { a.reversedSortingNotation = a.domain + '@' + a.name; return a; });
                $scope.mailboxes.edit.active = mailbox.active;
                $scope.mailboxes.edit.enablePop3 = mailbox.enablePop3;
                $scope.mailboxes.edit.storageQuotaEnabled = !!mailbox.storageQuota;
                $scope.mailboxes.edit.storageQuota = mailbox.storageQuota || $scope.storageQuotaTicks[0];

                // make a copy for later comparison
                angular.copy($scope.mailboxes.edit.aliases, $scope.mailboxes.edit.aliasesOriginal);

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

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

                var data = {
                    ownerId: $scope.mailboxes.edit.owner.id,
                    ownerType: $scope.mailboxes.edit.owner.type,
                    active: $scope.mailboxes.edit.active,
                    enablePop3: $scope.mailboxes.edit.enablePop3,
                    storageQuota: $scope.mailboxes.edit.storageQuotaEnabled ? $scope.mailboxes.edit.storageQuota : 0,
                    messagesQuota: 0
                };

                // $scope.mailboxes.edit.owner is expected to be validated by the UI
                Client.updateMailbox($scope.domain.domain, $scope.mailboxes.edit.name, data, function (error) {
                    if (error) {
                        $scope.mailboxes.edit.error = error;
                        $scope.mailboxes.edit.busy = false;
                        return;
                    }

                    function done() {
                        $scope.diskUsage[$scope.mailboxes.edit.name + '@' + $scope.domain.domain].quotaLimit = $scope.mailboxes.edit.storageQuotaEnabled ? $scope.mailboxes.edit.storageQuota/1024 : 0; // hack to avoid refresh

                        $scope.mailboxes.edit.busy = false;
                        $scope.mailboxes.edit.error = null;
                        $scope.mailboxes.edit.name = '';
                        $scope.mailboxes.edit.owner = null;
                        $scope.mailboxes.edit.aliases = [];
                        $scope.mailboxes.edit.storageQuota = 0;
                        $scope.mailboxes.edit.storageQuotaEnabled = false;
                        $scope.mailboxes.refresh();

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

                    // skip if nothing has changed
                    if (angular.equals($scope.mailboxes.edit.aliases, $scope.mailboxes.edit.aliasesOriginal)) return done();

                    Client.setAliases($scope.mailboxes.edit.name, $scope.domain.domain, $scope.mailboxes.edit.aliases, function (error) {
                        if (error) {
                            $scope.mailboxes.edit.error = error;
                            $scope.mailboxes.edit.busy = false;
                            return;
                        }

                        done();
                    });
                });
            }
        },

        remove: {
            busy: false,
            mailbox: null,
            deleteMails: true,

            show: function (mailbox) {
                $scope.mailboxes.remove.mailbox = mailbox;

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

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

                Client.removeMailbox($scope.domain.domain, $scope.mailboxes.remove.mailbox.name, $scope.mailboxes.remove.deleteMails, function (error) {
                    $scope.mailboxes.remove.busy = false;
                    if (error) return console.error(error);

                    $scope.mailboxes.remove.mailbox = null;
                    $scope.mailboxes.refresh(function (error) {
                        if (error) return console.error(error);

                        $scope.catchall.refresh();

                        $('#mailboxRemoveModal').modal('hide');
                    });
                });
            }
        },

        refresh: function (callback) {
            callback = typeof callback === 'function' ? callback : function (error) { if (error) return console.error(error); };

            Client.listMailboxes($scope.domain.domain, $scope.mailboxes.search, $scope.mailboxes.currentPage, $scope.mailboxes.perPage, function (error, mailboxes) {
                if (error) return callback(error);

                mailboxes.forEach(function (m) {
                    m.owner = $scope.owners.find(function (o) { return o.id === m.ownerId; }); // owner may not exist
                    m.ownerDisplayName = m.owner ? m.owner.display : ''; // this meta property is set when we get the user list

                    var u = $scope.diskUsage[m.name + '@' + m.domain]; // this is unset when no emails have been received yet
                    m.usage = (u && u.quotaValue * 1024) || 0;
                    m.limit = (u && u.quotaLimit * 1024) || 0;
                });

                $scope.mailboxes.mailboxes = mailboxes;

                callback();
            });
        },

        showNextPage: function () {
            $scope.mailboxes.currentPage++;
            $scope.mailboxes.refresh();
        },

        showPrevPage: function () {
            if ($scope.mailboxes.currentPage > 1) $scope.mailboxes.currentPage--;
            else $scope.mailboxes.currentPage = 1;
            $scope.mailboxes.refresh();
        },

        updateFilter: function (fresh) {
            if (fresh) $scope.mailboxes.currentPage = 1;
            $scope.mailboxes.refresh();
        }
    };

    $scope.mailRelayPresets = [
        { provider: 'cloudron-smtp', name: 'Built-in SMTP server' },
        { provider: 'external-smtp', name: 'External SMTP server', host: '', port: 587 },
        { provider: 'external-smtp-noauth', name: 'External SMTP server (No Authentication)', host: '', port: 587 },
        { provider: 'ses-smtp', name: 'Amazon SES', host: 'email-smtp.us-east-1.amazonaws.com', port: 587, spfDoc: 'https://docs.aws.amazon.com/ses/latest/DeveloperGuide/spf.html' },
        { provider: 'elasticemail-smtp', name: 'Elastic Email', host: 'smtp.elasticemail.com', port: 587, spfDoc: 'https://elasticemail.com/blog/marketing_tips/common-spf-errors' },
        { provider: 'google-smtp', name: 'Google', host: 'smtp.gmail.com', port: 587, spfDoc: 'https://support.google.com/a/answer/33786?hl=en' },
        { provider: 'mailgun-smtp', name: 'Mailgun', host: 'smtp.mailgun.org', port: 587, spfDoc: 'https://www.mailgun.com/blog/white-labeling-dns-records-your-customers-tips-tricks' },
        { provider: 'mailjet-smtp', name: 'Mailjet', host: '', port: 587, spfDoc: 'https://app.mailjet.com/docs/spf-dkim-guide' },
        { provider: 'postmark-smtp', name: 'Postmark', host: 'smtp.postmarkapp.com', port: 587, spfDoc: 'https://postmarkapp.com/support/article/1092-how-do-i-set-up-spf-for-postmark' },
        { provider: 'sendgrid-smtp', name: 'SendGrid', host: 'smtp.sendgrid.net', port: 587, username: 'apikey', spfDoc: 'https://sendgrid.com/docs/ui/account-and-settings/spf-records/' },
        { provider: 'sparkpost-smtp', name: 'SparkPost', host: 'smtp.sparkpostmail.com', port: 587, username: 'SMTP_Injection', spfDoc: 'https://www.sparkpost.com/resources/email-explained/spf-sender-policy-framework/' },
        { provider: 'noop', name: 'Disable' },
    ];

    $scope.usesTokenAuth = function (provider) {
        return provider === 'postmark-smtp' || provider === 'sendgrid-smtp' || provider === 'sparkpost-smtp';
    };

    $scope.usesExternalServer = function (provider) {
        return provider !== 'cloudron-smtp' && provider !== 'noop';
    };

    $scope.usesPasswordAuth = function (provider) {
        return provider === 'external-smtp'
            || provider === 'ses-smtp'
            || provider === 'google-smtp'
            || provider === 'mailgun-smtp'
            || provider === 'elasticemail-smtp'
            || provider === 'mailjet-smtp';
    };

    $scope.mailRelay = {
        error: null,
        success: false,
        busy: false,
        preset: $scope.mailRelayPresets[0],

        // form data to be set on load
        relay: {
            provider: 'cloudron-smtp',
            host: '',
            port: 25,
            username: '',
            password: '',
            serverApiToken: '',
            acceptSelfSignedCerts: false
        },

        presetChanged: function () {
            $scope.mailRelay.error = null;

            $scope.mailRelay.relay.provider = $scope.mailRelay.preset.provider;
            $scope.mailRelay.relay.host = $scope.mailRelay.preset.host;
            $scope.mailRelay.relay.port = $scope.mailRelay.preset.port;
            $scope.mailRelay.relay.username = '';
            $scope.mailRelay.relay.password = '';
            $scope.mailRelay.relay.serverApiToken = '';
            $scope.mailRelay.relay.acceptSelfSignedCerts = false;
        },

        submit: function () {
            $scope.mailRelay.error = null;
            $scope.mailRelay.busy = true;
            $scope.mailRelay.success = false;

            var data = {
                provider: $scope.mailRelay.relay.provider,
                host: $scope.mailRelay.relay.host,
                port: $scope.mailRelay.relay.port,
                acceptSelfSignedCerts: $scope.mailRelay.relay.acceptSelfSignedCerts,
                forceFromAddress: false
            };

            // fill in provider specific username/password usage
            if (data.provider === 'postmark-smtp') {
                data.username = $scope.mailRelay.relay.serverApiToken;
                data.password = $scope.mailRelay.relay.serverApiToken;
                data.forceFromAddress = true; // postmark requires the "From:" in mail to be a Sender Signature
            } else if (data.provider === 'sendgrid-smtp') {
                data.username = 'apikey';
                data.password = $scope.mailRelay.relay.serverApiToken;
            } else if (data.provider === 'sparkpost-smtp') {
                data.username = 'SMTP_Injection';
                data.password = $scope.mailRelay.relay.serverApiToken;
            } else {
                data.username = $scope.mailRelay.relay.username;
                data.password = $scope.mailRelay.relay.password;
            }

            Client.setMailRelay($scope.domain.domain, data, function (error) {

                if (error) {
                    $scope.mailRelay.error = error.message;
                    $scope.mailRelay.busy = false;
                    return;
                }

                $scope.domain.relay = data;

                // let the mail server restart, otherwise we get "Error getting IP" errors during refresh
                $timeout(function () {
                    $scope.mailRelay.busy = false;
                    $scope.mailRelay.success = true;
                    $scope.refreshDomain();

                    // clear success indicator after 5sec
                    $timeout(function () { $scope.mailRelay.success = false; }, 5000);
                }, 5000);

            });
        }
    };

    function resetDnsRecords() {
        $scope.expectedDnsRecordsTypes.forEach(function (record) {
            var type = record.value;
            $scope.expectedDnsRecords[type] = {};

            $('#collapse_dns_' + type).collapse('hide');
        });

        $('#collapse_outbound_smtp').collapse('hide');
        $('#collapse_rbl').collapse('hide');
    }

    function showExpectedDnsRecords() {
        // open the record details if they are not correct
        $scope.expectedDnsRecordsTypes.forEach(function (record) {
            var type = record.value;
            $scope.expectedDnsRecords[type] = $scope.domain.mailStatus.dns[type] || {};

            if (!$scope.expectedDnsRecords[type].status) {
                $('#collapse_dns_' + type).collapse('show');
            }
        });

        if (!$scope.domain.mailStatus.relay.status) {
            $('#collapse_outbound_smtp').collapse('show');
        }

        if (!$scope.domain.mailStatus.rbl.status) {
            $('#collapse_rbl').collapse('show');
        }
    }

    $scope.selectDomain = function () {
        $location.path('/email/' + $scope.domain.domain, false);
    };

    // this is required because we need to rewrite the CLOUDRON_MAIL_SERVER_HOST env var
    $scope.reconfigureEmailApps = function () {
        var installedApps = Client.getInstalledApps();
        for (var i = 0; i < installedApps.length; i++) {
            if (!installedApps[i].manifest.addons.email) continue;

            Client.repairApp(installedApps[i].id, { }, function (error) {
                if (error) console.error(error);
            });
        }
    };

    $scope.refreshDomain = function () {
        $scope.refreshBusy = true;

        resetDnsRecords();

        Client.getMailConfigForDomain(domainName, function (error, mailConfig) {
            if (error && error.statusCode === 404) return $location.path('/email');
            if (error) {
                $scope.refreshBusy = false;
                return console.error(error);
            }

            // pre-fill the form
            $scope.mailRelay.relay.provider = mailConfig.relay.provider;
            $scope.mailRelay.relay.host = mailConfig.relay.host;
            $scope.mailRelay.relay.port = mailConfig.relay.port;
            $scope.mailRelay.relay.acceptSelfSignedCerts = !!mailConfig.relay.acceptSelfSignedCerts;
            $scope.mailRelay.relay.username = '';
            $scope.mailRelay.relay.password = '';
            $scope.mailRelay.relay.serverApiToken = '';

            if (mailConfig.relay.provider === 'postmark-smtp') {
                $scope.mailRelay.relay.serverApiToken = mailConfig.relay.username;
            } else if (mailConfig.relay.provider === 'sendgrid-smtp') {
                $scope.mailRelay.relay.serverApiToken = mailConfig.relay.password;
            } else if (mailConfig.relay.provider === 'sparkpost-smtp') {
                $scope.mailRelay.relay.serverApiToken = mailConfig.relay.password;
            } else {
                $scope.mailRelay.relay.username = mailConfig.relay.username;
                $scope.mailRelay.relay.password = mailConfig.relay.password;
            }

            for (var i = 0; i < $scope.mailRelayPresets.length; i++) {
                if ($scope.mailRelayPresets[i].provider === mailConfig.relay.provider) {
                    $scope.mailRelay.preset = $scope.mailRelayPresets[i];
                    break;
                }
            }

            $scope.banner.text = mailConfig.banner.text || '';
            $scope.banner.html = mailConfig.banner.html || '';

            // amend to selected domain to be available for the UI
            $scope.domain.mailConfig = mailConfig;
            $scope.domain.mailStatus = {};

            Client.getMailUsage($scope.domain.domain, function (error, usage) {
                if (error) console.error(error);

                $scope.diskUsage = usage || {}; // if mail server is down, don't stop the listing

                $scope.mailboxes.refresh(); // relies on disk usage
                $scope.mailinglists.refresh();
                $scope.catchall.refresh();
            });

            // we will fetch the status without blocking the ui
            Client.getMailStatusForDomain($scope.domain.domain, function (error, mailStatus) {
                $scope.refreshBusy = false;

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

                $scope.domain.mailStatus = mailStatus;

                showExpectedDnsRecords();
            });
        });
    };

    $scope.refreshStatus = function () {
        $scope.refreshBusy = true;

        Client.getMailStatusForDomain($scope.domain.domain, function (error, mailStatus) {
            if (error) {
                $scope.refreshBusy = false;
                return console.error(error);
            }

            // overwrite the selected domain status to be available for the UI
            $scope.domain.mailStatus = mailStatus;

            showExpectedDnsRecords();

            $scope.refreshBusy = false;
        });
    };

    $scope.howToConnectInfo = {
        show: function () {
            $('#howToConnectInfoModal').modal('show');
        }
    };

    Client.onReady(function () {
        $scope.isAdminDomain = $scope.config.adminDomain === domainName;

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

            // ensure we have a display value available
            $scope.owners.push({ header: true, display: $translate.instant('email.mailboxboxDialog.usersHeader') });
            users.forEach(function (u) {
                $scope.owners.push({ display: u.username || u.email, id: u.id, type: 'user' });
            });

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

                $scope.owners.push({ header: true, display: $translate.instant('email.mailboxboxDialog.groupsHeader') });
                groups.forEach(function (g) {
                    $scope.owners.push({ display: g.name, id: g.id, type: 'group' });
                });

                $scope.owners.push({ header: true, display: $translate.instant('email.mailboxboxDialog.appsHeader') });
                Client.getInstalledApps().forEach(function (a) {
                    if (a.manifest.addons && a.manifest.addons.recvmail) $scope.owners.push({ display: a.label || a.fqdn, id: a.id, type: 'app' });
                });

                Client.getDomains(function (error, result) {
                    if (error) return console.error('Unable to list domains.', error);

                    $scope.domain = result.filter(function (d) { return d.domain === domainName; })[0];
                    $scope.adminDomain = result.filter(function (d) { return d.domain === $scope.config.adminDomain; })[0];
                    $scope.refreshDomain();

                    async.eachSeries(result, function (domain, iteratorDone) {
                        Client.getMailConfigForDomain(domain.domain, function (error, mailConfig) {
                            if (error) return console.error('Failed to fetch mail config for domain', domain.domain, error);

                            if (mailConfig.enabled) $scope.incomingDomains.push(domain);
                            iteratorDone();
                        });
                    }, function iteratorDone(error) {
                        if (error) return console.error(error);

                        $scope.setView($routeParams.view || 'mailboxes', true /* always set */);
                        $scope.ready = true;
                    });
                });
            });
        });
    });

    // setup all the dialog focus handling
    ['mailboxAddModal', 'mailboxEditModal', 'mailinglistEditModal', 'mailinglistAddModal'].forEach(function (id) {
        $('#' + id).on('shown.bs.modal', function () {
            $(this).find('[autofocus]:first').focus();
        });
    });

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