'use strict';

/* global $, angular, TASK_TYPES */
/* global async */

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

    $scope.ready = false;
    $scope.config = Client.getConfig();
    $scope.user = Client.getUserInfo();
    $scope.domains = [];

    $scope.mailLocation = {
        busy: false,
        percent: 0,
        message: '',
        errorMessage: '',

        currentLocation: { domain: null, subdomain: '' },
        domain: null,
        subdomain: '',
        tasks: [],

        refreshTasks: function () {
            Client.getTasksByType(TASK_TYPES.TASK_CHANGE_MAIL_LOCATION, function (error, tasks) {
                if (error) return console.error(error);
                $scope.mailLocation.tasks = tasks.slice(0, 10);
                if ($scope.mailLocation.tasks.length && $scope.mailLocation.tasks[0].active) $scope.mailLocation.updateStatus();
            });
        },

        stop: function () {
            Client.stopTask($scope.mailLocation.tasks[0].id, function (error) {
                if (error) console.error(error);
                $scope.mailLocation.busy = false;
                $scope.mailLocation.refreshTasks();
            });
        },

        refresh: function () {
            Client.getMailLocation(function (error, location) {
                if (error) return console.error('Failed to get max email location', error);

                $scope.mailLocation.currentLocation.subdomain = $scope.mailLocation.subdomain = location.subdomain;
                $scope.mailLocation.currentLocation.domain = $scope.mailLocation.domain = $scope.domains.find(function (d) { return location.domain === d.domain; });

                $scope.mailLocation.refreshTasks();
            });
        },

        updateStatus: function () {
            var taskId = $scope.mailLocation.tasks[0].id;

            Client.getTask(taskId, function (error, data) {
                if (error) return window.setTimeout($scope.mailLocation.updateStatus, 5000);

                if (!data.active) {
                    $scope.mailLocation.busy = false;
                    $scope.mailLocation.message = '';
                    $scope.mailLocation.percent = 100;
                    $scope.mailLocation.errorMessage = data.success ? '' : data.error.message;

                    $scope.mailLocation.refreshTasks(); // update the tasks list dropdown

                    return;
                }

                $scope.mailLocation.busy = true;
                $scope.mailLocation.percent = data.percent;
                $scope.mailLocation.message = data.message;
                window.setTimeout($scope.mailLocation.updateStatus, 1000);
            });
        },

        change: function () {
            $scope.mailLocation.busy = true;
            $scope.mailLocation.percent = 0;
            $scope.mailLocation.message = '';
            $scope.mailLocation.errorMessage = '';

            Client.setMailLocation($scope.mailLocation.subdomain, $scope.mailLocation.domain.domain, function (error) {
                if (error) {
                    console.error(error);
                    $scope.mailLocation.errorMessage = error.message;
                    $scope.mailLocation.busy = false;
                } else {
                    $scope.mailLocation.refreshTasks();
                }

                Client.refreshConfig(); // update config.mailFqdn
            });
        }
    };

    $scope.maxEmailSize = {
        busy: false,
        error: null,
        size: 0,
        currentSize: 0,

        refresh: function () {
            Client.getMaxEmailSize(function (error, size) {
                if (error) return console.error('Failed to get max email size', error);

                $scope.maxEmailSize.currentSize = size;
            });
        },

        show: function() {
            $scope.maxEmailSize.busy = false;
            $scope.maxEmailSize.error = null;
            $scope.maxEmailSize.size = $scope.maxEmailSize.currentSize;

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

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

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

            Client.setMaxEmailSize(parseInt($scope.maxEmailSize.size), function (error) {
                $scope.maxEmailSize.busy = false;

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

                $scope.maxEmailSize.currentSize = $scope.maxEmailSize.size;

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

        }
    };

    $scope.virtualAllMail = {
        busy: false,
        error: null,
        enabled: false,

        refresh: function () {
            Client.getVirtualAllMail(function (error, enabled) {
                if (error) return console.error('Failed to get max email size', error);

                $scope.virtualAllMail.enabled = enabled;
            });
        },

        show: function() {
            $scope.virtualAllMail.busy = false;
            $scope.virtualAllMail.error = null;

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

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

            Client.setVirtualAllMail(enable, function (error) {
                $scope.virtualAllMail.busy = false;

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

                $scope.virtualAllMail.enabled = enable;

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

    $scope.mailboxSharing = {
        busy: false,
        error: null,
        enabled: null, // null means we have not refreshed yet

        refresh: function () {
            Client.getMailboxSharing(function (error, enabled) {
                if (error) return console.error('Failed to get mailbox sharing', error);

                $scope.mailboxSharing.enabled = enabled;
            });
        },

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

            Client.setMailboxSharing(!$scope.mailboxSharing.enabled, function (error) {
                // give sometime for mail server to restart
                $timeout(function () {
                    $scope.mailboxSharing.busy = false;
                    if (error) return console.error(error);
                    $scope.mailboxSharing.enabled = !$scope.mailboxSharing.enabled;
                }, 3000);
            });
        }
    };

    $scope.ftsConfig = {
        busy: false,
        error: {},
        currentConfig: null, // null means not loaded yet
        enabled: false,
        running: false,
        enoughMemory: false,

        refresh: function () {
            Client.getService('mail', function (error, result) {
                if (error) return console.log('Error getting status of mail conatiner', error);

                $scope.ftsConfig.enoughMemory = result.config.memoryLimit > (1024*1024*1024*2);
                $scope.ftsConfig.running = result.healthcheck && result.healthcheck.solr.status && result.healthcheck.tika.status;

                Client.getFtsConfig(function (error, config) {
                    if (error) return console.error('Failed to get solr config', error);

                    $scope.ftsConfig.currentConfig = config;
                });
            });
        },

        show: function() {
            $scope.ftsConfig.busy = false;
            $scope.ftsConfig.error = null;
            $scope.ftsConfig.enabled = $scope.ftsConfig.currentConfig.enabled;

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

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

            Client.setFtsConfig(newState, function (error) {
                if (error) return console.error(error);

                $timeout(function () {
                    $scope.ftsConfig.busy = false;
                    // FIXME: these values are fake. but cannot get current status from mail server since it might be restarting
                    $scope.ftsConfig.currentConfig.enabled = newState;
                    $scope.ftsConfig.running = newState;

                    $timeout(function () { $scope.ftsConfig.refresh(); }, 20000); // get real values after 20 seconds

                    $('#ftsConfigModal').modal('hide');
                }, 5000);
            });
        }
    };

    $scope.spamConfig = {
        busy: false,
        error: {},
        acl: { allowlist: [], blocklist: [] },
        customConfig: '',

        config: '',
        blocklist: '', // currently, we don't support allowlist because it requires user to understand a bit more of what he is doing

        refresh: function () {
            Client.getSpamCustomConfig(function (error, config) {
                if (error) return console.error('Failed to get custom spam config', error);

                $scope.spamConfig.customConfig = config;
            });

            Client.getSpamAcl(function (error, acl) {
                if (error) return console.error('Failed to get spam acl', error);

                $scope.spamConfig.acl = acl;
            });
        },

        show: function() {
            $scope.spamConfig.busy = false;
            $scope.spamConfig.error = {};

            $scope.spamConfig.blocklist = $scope.spamConfig.acl.blocklist.join('\n');
            $scope.spamConfig.config = $scope.spamConfig.customConfig;

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

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

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

            var blocklist = $scope.spamConfig.blocklist.split('\n').filter(function (l) { return l !== ''; });

            Client.setSpamAcl({ blocklist: blocklist, allowlist: [] }, function (error) {
                if (error) {
                    $scope.spamConfig.busy = false;
                    $scope.spamConfig.error.blocklist = error.message;
                    $scope.spamConfigChangeForm.blocklist.$setPristine();
                    return;
                }

                Client.setSpamCustomConfig($scope.spamConfig.config, function (error) {
                    if (error) {
                        $scope.spamConfig.busy = false;
                        $scope.spamConfig.error.config = error.message;
                        $scope.spamConfigChangeForm.config.$setPristine();
                        return;
                    }

                    $scope.spamConfig.busy = false;

                    $scope.spamConfig.refresh();

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

    $scope.acl = {
        busy: false,
        error: {},

        dnsblZones: '',
        dnsblZonesCount: 0,

        refresh: function () {
            Client.getDnsblConfig(function (error, result) {
                if (error) return console.error('Failed to get email acl', error);

                $scope.acl.dnsblZones = result.zones.join('\n');
                $scope.acl.dnsblZonesCount = result.zones.length;
            });
        },

        show: function() {
            $scope.acl.busy = false;
            $scope.acl.error = {};

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

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

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

            var zones = $scope.acl.dnsblZones.split('\n').filter(function (l) { return l !== ''; });

            Client.setDnsblConfig(zones, function (error) {
                if (error) {
                    $scope.acl.busy = false;
                    $scope.acl.error.dnsblZones = error.message;
                    $scope.aclChangeForm.dnsblZones.$setPristine();
                    return;
                }

                $scope.acl.busy = false;

                $scope.acl.refresh();

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

    $scope.testEmail = {
        busy: false,
        error: {},

        mailTo: '',

        domain: null,

        clearForm: function () {
            $scope.testEmail.mailTo = '';
        },

        show: function (domain) {
            $scope.testEmail.error = {};
            $scope.testEmail.busy = false;

            $scope.testEmail.domain = domain;
            $scope.testEmail.mailTo = $scope.user.email;

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

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

            Client.sendTestMail($scope.testEmail.domain.domain, $scope.testEmail.mailTo, function (error) {
                $scope.testEmail.busy = false;

                if (error) {
                    $scope.testEmail.error.generic = error.message;
                    console.error(error);
                    $('#inputTestMailTo').focus();
                    return;
                }

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

    function refreshMailStatus(domain, done) {
        Client.getMailStatusForDomain(domain.domain, function (error, result) {
            if (error) {
                console.error('Failed to fetch mail status for domain', domain.domain, error);
                return done();
            }

            domain.status = result;

            domain.statusOk = Object.keys(result).every(function (k) {
                if (k === 'dns') return Object.keys(result.dns).every(function (k) { return result.dns[k].status; });

                if (!('status' in result[k])) return true; // if status is not present, the test was not run

                return result[k].status;
            });

            done();
        });
    }

    function refreshMailConfig(domain, done) {
        Client.getMailConfigForDomain(domain.domain, function (error, mailConfig) {
            if (error) {
                console.error('Failed to fetch mail config for domain', domain.domain, error);
                return done();
            }

            domain.inbound = mailConfig.enabled;
            domain.outbound = mailConfig.relay.provider !== 'noop';

            // do this even if no outbound since people forget to remove mailboxes
            Client.getMailboxCount(domain.domain, function (error, count) {
                if (error) {
                    console.error('Failed to fetch mailboxes for domain', domain.domain, error);
                    return done();
                }

                domain.mailboxCount = count;

                done();
            });
        });
    }

    function refreshMailUsage(domain, done) {
        Client.getMailUsage(domain.domain, function (error, usage) {
            if (error) {
                console.error('Failed to fetch usage for domain', domain.domain, error);
                return done();
            }

            domain.usage = 0;
            // we used to use quotaValue here but it's quite different wrt diskSize. so choose diskSize consistently
            // also, quotaValue can be missing for deleted mailboxes that are on disk but removed from dovecot/ldap itself
            Object.keys(usage).forEach(function (m) { domain.usage += usage[m].diskSize; });

            done();
        });
    }

    function refreshDomainStatuses() {
        async.each($scope.domains, function (domain, iteratorDone) {
            async.series([
                refreshMailStatus.bind(null, domain),
                refreshMailConfig.bind(null, domain),
            ], function () {
                domain.loading = false;
                iteratorDone();
            });
        }, function () {
            // mail usage is loaded separately with a cancellation check. when there are a lot of domains, it runs a long time in background and slows down loading of new views
            async.eachLimit($scope.domains, 5, function (domain, itemDone) {
                if ($scope.$$destroyed) return itemDone(); // abort!
                refreshMailUsage(domain, function () {
                    domain.loadingUsage = false;
                    itemDone();
                });
            });
        });
    }

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

            domains.forEach(function (domain) { domain.loading = true; domain.loadingUsage = true; }); // used by ui to show 'loading'
            $scope.domains = domains;

            $scope.ready = true;

            if ($scope.user.isAtLeastAdmin) {
                $scope.mailLocation.refresh();
                $scope.maxEmailSize.refresh();
                $scope.virtualAllMail.refresh();
                $scope.mailboxSharing.refresh();
                $scope.spamConfig.refresh();
                $scope.ftsConfig.refresh();
                $scope.acl.refresh();
            }

            refreshDomainStatuses();
        });
    });

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

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