'use strict';

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

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

    var refreshVolumesTimerId = null;

    $scope.config = Client.getConfig();
    $scope.volumes = [];
    $scope.devices = [];
    $scope.ready = false;

    $scope.mountTypes = [
        { name: 'CIFS', value: 'cifs' },
        { name: 'EXT4', value: 'ext4' },
        { name: 'Filesystem', value: 'filesystem' },
        { name: 'Filesystem (Mountpoint)', value: 'mountpoint' },
        { name: 'NFS', value: 'nfs' },
        { name: 'SSHFS', value: 'sshfs' },
        { name: 'XFS', value: 'xfs' },
    ];

    function refreshVolumes(callback) {
        let refreshAgain = false;

        Client.getVolumes(function (error, results) {
            if (error) return console.error(error);

            $scope.volumes = results;

            async.eachSeries($scope.volumes, function (volume, iteratorDone) {
                Client.getVolumeStatus(volume.id, function (error, result) {
                    if (error) {
                        console.error('Failed to fetch volume status', volume.name, error);
                        iteratorDone();
                    }

                    volume.status = result;
                    if (volume.status.state === 'activating') refreshAgain = true;

                    iteratorDone();
                });
            }, function () {
                if (!refreshAgain) {
                    clearTimeout(refreshVolumesTimerId);
                    refreshVolumesTimerId = null;
                } else if (!refreshVolumesTimerId) {
                    refreshVolumesTimerId = setTimeout(refreshVolumes, 5000);
                }

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

    // same as box/mounts.js
    $scope.isMountProvider = function (provider) {
        return provider === 'sshfs' || provider === 'cifs' || provider === 'nfs' || provider === 'ext4' || provider === 'xfs';
    };

    $scope.remount = function (volume) {
        volume.remounting = true;

        Client.remountVolume(volume.id, function (error) {
            if (error) console.error(error);

            // give the backend some time
            $timeout(function () {
                volume.remounting = false;
                refreshVolumes(function (error) { if (error) console.error('Failed to refresh volume states.', error); });
            }, 2000);
        });
    };

    $scope.volumeAdd = {
        error: null,
        busy: false,

        name: '',
        hostPath: '',

        mountType: 'mountpoint',
        host: '',
        remoteDir: '',
        username: '',
        password: '',
        diskPath: '',
        user: '',
        seal: false,
        port: 22,
        privateKey: '',

        reset: function () {
            $scope.volumeAdd.error = null;
            $scope.volumeAdd.busy = false;
            $scope.volumeAdd.name = '';
            $scope.volumeAdd.hostPath = '';
            $scope.volumeAdd.mountType = 'mountpoint';
            $scope.volumeAdd.host = '';
            $scope.volumeAdd.remoteDir = '';
            $scope.volumeAdd.username = '';
            $scope.volumeAdd.password = '';
            $scope.volumeAdd.diskPath = '';
            $scope.volumeAdd.customDiskPath = '';
            $scope.volumeAdd.user = '';
            $scope.volumeAdd.seal = false;
            $scope.volumeAdd.port = 22;
            $scope.volumeAdd.privateKey = '';

            $scope.volumeAddForm.$setPristine();
            $scope.volumeAddForm.$setUntouched();
        },

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

            $scope.blockDevices = [];

            Client.getBlockDevices(function (error, result) {
                if (error) console.error('Failed to list blockdevices:', error);

                // only offer unmounted disks
                result = result.filter(function (d) { return !d.mountpoint; });

                // amend label for UI
                result.forEach(function (d) { d.label = d.path; });

                // add custom fake option
                result.push({ path: 'custom', label: 'Custom' });

                $scope.blockDevices = result;
                $scope.volumeAdd.diskPath = $scope.blockDevices[0].path;

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

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

            var mountOptions = null;

            if ($scope.volumeAdd.mountType === 'cifs') {
                mountOptions = {
                    host: $scope.volumeAdd.host,
                    remoteDir: $scope.volumeAdd.remoteDir,
                    username: $scope.volumeAdd.username,
                    password: $scope.volumeAdd.password,
                    seal: $scope.volumeAdd.seal
                };
            } else if ($scope.volumeAdd.mountType === 'nfs') {
                mountOptions = {
                    host: $scope.volumeAdd.host,
                    remoteDir: $scope.volumeAdd.remoteDir,
                };
            } else if ($scope.volumeAdd.mountType === 'sshfs') {
                mountOptions = {
                    host: $scope.volumeAdd.host,
                    port: $scope.volumeAdd.port,
                    remoteDir: $scope.volumeAdd.remoteDir,
                    user: $scope.volumeAdd.user,
                    privateKey: $scope.volumeAdd.privateKey,
                };
            } else if ($scope.volumeAdd.mountType === 'ext4' || $scope.volumeAdd.mountType === 'xfs') {
                mountOptions = {
                    diskPath: $scope.volumeAdd.diskPath === 'custom' ? $scope.volumeAdd.customDiskPath : $scope.volumeAdd.diskPath
                };
            }

            var hostPath;
            if ($scope.volumeAdd.mountType === 'mountpoint' || $scope.volumeAdd.mountType === 'filesystem') {
                hostPath = $scope.volumeAdd.hostPath;
            } else {
                hostPath = null;
            }

            Client.addVolume($scope.volumeAdd.name, $scope.volumeAdd.mountType, hostPath, mountOptions, function (error) {
                $scope.volumeAdd.busy = false;
                if (error) {
                    $scope.volumeAdd.error = error.message;
                    return;
                }

                $('#volumeAddModal').modal('hide');
                $scope.volumeAdd.reset();

                refreshVolumes();
            });
        }
    };

    $scope.volumeRemove = {
        busy: false,
        error: null,
        volume: null,

        reset: function () {
            $scope.volumeRemove.busy = false;
            $scope.volumeRemove.error = null;
            $scope.volumeRemove.volume = null;
        },

        show: function (volume) {
            $scope.volumeRemove.reset();

            $scope.volumeRemove.volume = volume;

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

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

            Client.removeVolume($scope.volumeRemove.volume.id, function (error) {
                if (error && (error.statusCode === 403 || error.statusCode === 409)) {
                    $scope.volumeRemove.error = error.message;
                } else if (error) {
                    Client.error(error);
                } else {
                    $('#volumeRemoveModal').modal('hide');
                    $scope.volumeRemove.reset();

                    refreshVolumes();
                }

                $scope.volumeRemove.busy = false;
            });
        },
    };

    Client.onReady(function () {
        refreshVolumes(function (error) {
            if (error) return console.error(error);

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

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

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