"use strict";
/**
 * Created by viktor.shevchenko on 7/10/2014.
 */
(function () {
    'use strict';
    angular.module('myitsmApp')
        .factory('metadataModel', ['metadataService', '$q', function (metadataService, $q) {
            var metadataModel = {
                cache: {},
                allStatuses: [],
                allStatusReasons: []
            };
            metadataModel.getMetadataByType = function (type) {
                if (metadataModel.cache[type]) {
                    var isAngularPromise = _.has(metadataModel.cache[type], '$$state.status');
                    return $q.when(isAngularPromise ? metadataModel.cache[type] : angular.copy(metadataModel.cache[type]));
                }
                metadataModel.cache[type] = metadataService.getMetadataByType(type).then(function (response) {
                    metadataModel.cache[type] = response[0];
                    if (response[0] && response[0].statuses) {
                        addStatusReason(response[0].statuses, type);
                        metadataModel.allStatuses = _.uniqBy((metadataModel.allStatuses.concat(response[0].statuses)), 'name');
                    }
                    return angular.copy(metadataModel.cache[type]);
                });
                return metadataModel.cache[type];
            };
            function addStatusReason(allStatuses, type) {
                _.forEach(allStatuses, function (status) {
                    if (status.statusReasons && status.statusReasons.length) {
                        metadataModel.allStatusReasons.push(status.statusReasons);
                    }
                });
                if (metadataModel.cache[type] && metadataModel.cache[type].consoleColumns
                    && metadataModel.cache[type].consoleColumns.statusReason && metadataModel.cache[type].consoleColumns.statusReason.length) {
                    metadataModel.allStatusReasons.push(metadataModel.cache[type].consoleColumns.statusReason);
                }
                metadataModel.allStatusReasons = _.uniqBy(_.flattenDeep(metadataModel.allStatusReasons), 'name');
            }
            metadataModel.getMetadataByTypes = function (types) {
                var requestMetadataForTicketTypes = [], metadataPromises = [], collectedMetaData = [];
                _.forEach(types, function (type) {
                    if (!metadataModel.cache[type]) {
                        requestMetadataForTicketTypes.push(type);
                    }
                    else if (_.has(metadataModel.cache[type], '$$state.status')) {
                        metadataPromises.push(metadataModel.cache[type]);
                    }
                    else {
                        collectedMetaData.push(angular.copy(metadataModel.cache[type]));
                    }
                });
                if (!requestMetadataForTicketTypes.length && !metadataPromises.length) {
                    return $q.when(collectedMetaData);
                }
                if (requestMetadataForTicketTypes.length) {
                    var requestMetadataPromise = metadataService.getMetadataByType(requestMetadataForTicketTypes);
                    metadataPromises.push(requestMetadataPromise);
                    _.forEach(requestMetadataForTicketTypes, function (requestTicketType) {
                        metadataModel.cache[requestTicketType] = requestMetadataPromise;
                    });
                }
                return $q.all(metadataPromises).then(function (metadataResponses) {
                    _.forEach(metadataResponses, function (metadataArray) {
                        if (Array.isArray(metadataArray)) {
                            _.forEach(metadataArray, loadMetadata);
                        }
                        else {
                            loadMetadata(metadataArray);
                        }
                        function loadMetadata(metadata) {
                            metadataModel.cache[metadata.metadatatype] = metadata;
                            addStatusReason(metadata.statuses, metadata.metadatatype);
                            metadataModel.allStatuses = _.uniqBy((metadataModel.allStatuses.concat(metadata.statuses)), 'name');
                        }
                    });
                    //Return metadata in the same sequence in which it was demanded
                    collectedMetaData = [];
                    _.forEach(types, function (metadataType) {
                        collectedMetaData.push(metadataModel.cache[metadataType]);
                    });
                    return collectedMetaData;
                });
            };
            //person metadata call for creating a new customer, we don't use type here when we make the backend call
            // because this is not a ticket, it is a resource
            metadataModel.getPersonMetadata = function (type) {
                metadataModel.cache[type] = metadataService.getPersonMetadata().then(function (response) {
                    metadataModel.cache[type] = response[0];
                    return angular.copy(metadataModel.cache[type]);
                });
                return metadataModel.cache[type];
            };
            return metadataModel;
        }]);
})();