"use strict";
/**
 * Created by viktor.shevchenko on 12/10/2014.
 */
(function () {
    'use strict';
    angular.module('createTicketModule')
        .controller('CreateKnowledgeArticleController', ['$scope', 'localStorageService', '$modal', 'searchService', 'relationModel',
        '$state', '$timeout', 'systemAlertService', 'attachmentService', 'metadataModel', 'categoriesService',
        'knowledgeArticleModel', 'ticketModel', '$q', '$filter', 'configurationModel',
        function ($scope, localStorageService, $modal, searchService, relationModel, $state, $timeout, systemAlertService, attachmentService, metadataModel, categoriesService, knowledgeArticleModel, ticketModel, $q, $filter, configurationModel) {
            if (!configurationModel.isServerApplicationEnabled(EntityVO.TYPE_KNOWLEDGE)) {
                $state.go('unauthorized');
                return;
            }
            $scope.editMode = true; //flag that is used for category directive
            var article = {}, metadata, knowledgeTitleChangeTimer, state = {}, localStorageDefaultTemplateKey = 'DEFAULT_KA_TEMPLATE', currentUserId = localStorageService.get('user.userId'), savedTemplate = localStorageService.get(localStorageDefaultTemplateKey), defaultTemplateId = (savedTemplate && (savedTemplate.user === currentUserId)) ? savedTemplate.templateId : null, localStorageLastVisibilitySetKey = 'LAST_SET_OF_VISIBILITY_GROUPS', draftArticle = {};
            setInitialState();
            loadAvailableTemplates().then(function () {
                if (defaultTemplateId) {
                    $scope.selectedTemplate = _.find($scope.templates, { id: defaultTemplateId });
                    loadDraftData().then(function () {
                        state.isTemplateSelected = true;
                        state.isTemplateAccepted = true;
                    });
                }
            });
            function setInitialState() {
                state = angular.extend(state, {
                    dataIsLoading: false,
                    isTemplateSelected: false,
                    isTemplateAccepted: false,
                    rememberTemplate: false,
                    showMetadata: true,
                    loadingMergeWindow: false,
                    showingMergeTool: false,
                    similarArticles: [],
                    showSimilarArticles: false,
                    loadVisibility: false,
                    loadingSimilarArticles: false,
                    similarArticlePromise: null,
                    allowStateChange: false
                });
                $scope.attachments = [];
                $scope.linkedItems = [];
                $scope.titleMaxLength = 4000;
            }
            function loadAvailableTemplates() {
                state.dataIsLoading = true;
                return knowledgeArticleModel.getKnowledgeArticleTemplates().then(function (templates) {
                    $scope.templates = angular.copy(templates);
                    _.remove($scope.templates, { name: 'Decision Tree' });
                    return templates;
                }).finally(function () {
                    state.dataIsLoading = false;
                });
            }
            function loadDraftData() {
                var metaDataPromise = metadataModel.getMetadataByType(EntityVO.TYPE_KNOWLEDGE), kaDraftPromise = knowledgeArticleModel.getDraft($scope.selectedTemplate.id, $scope.articleContext);
                state.dataIsLoading = true;
                return $q.all([metaDataPromise, kaDraftPromise]).then(function (result) {
                    metadata = result[0];
                    angular.extend(article, result[1]);
                    $scope.article.categoriesControls = _.cloneDeep(categoriesService.populateCategories($scope.article.defaultCategorization, metadata));
                    $scope.article.categoriesSet = _.cloneDeep(categoriesService.populateMultipleCategories($scope.article.allCategories, metadata));
                    draftArticle = _.cloneDeep($scope.article);
                    _.forEach($scope.article.content, function (content) {
                        if (content.snippet) {
                            content.snippet = _.compact(content.snippet.split('\n')).join('<br>');
                        }
                    });
                }).finally(function () {
                    state.dataIsLoading = false;
                });
            }
            //template selection screen
            $scope.selectTemplate = function (template) {
                state.isTemplateSelected = true;
                $scope.selectedTemplate = _.cloneDeep(template);
            };
            //template details screen
            $scope.backToTemplateSelection = function () {
                $scope.selectedTemplate = null;
                state.isTemplateSelected = false;
                state.rememberTemplate = false;
            };
            $scope.acceptTemplate = function () {
                loadDraftData().then(function () {
                    setDefaultTemplate(state.rememberTemplate ? $scope.selectedTemplate.id : null);
                    state.isTemplateAccepted = true;
                });
            };
            $scope.mergeAndAcceptTemplate = function () {
                var newContent = '', previousArticle = _.cloneDeep(article);
                runMergeForChangeTemplate()
                    .then(function (content) {
                    $scope.previousTemplate = null;
                    newContent = content;
                    state.dataIsLoading = true;
                    return knowledgeArticleModel.getDraft($scope.selectedTemplate.id);
                })
                    .then(function (result) {
                    angular.extend(article, knowledgeArticleModel.mergeArticleMetaData(result, previousArticle, newContent));
                    setDefaultTemplate(state.rememberTemplate ? $scope.selectedTemplate.id : null);
                    state.isTemplateAccepted = true;
                }).finally(function () {
                    state.dataIsLoading = false;
                });
            };
            function setDefaultTemplate(templateId) {
                state.rememberTemplate = false;
                localStorageService.set(localStorageDefaultTemplateKey, {
                    templateId: templateId,
                    user: currentUserId
                });
            }
            function runMergeForChangeTemplate() {
                return openMergeTool({
                    input: $scope.article.content,
                    output: _.cloneDeep($scope.selectedTemplate.templateObject.sections),
                    outputTitle: ['create.knowledge.merge.change.output.title'],
                    inputTitle: ['create.knowledge.merge.change.input.title.first', 'create.knowledge.merge.change.input.title.second']
                }).then(function (content) {
                    return content;
                });
            }
            //knowledge article edit screen
            $scope.changeTemplate = function () {
                state.isTemplateSelected = false;
                state.isTemplateAccepted = false;
                $scope.previousTemplate = _.cloneDeep($scope.selectedTemplate);
                setDefaultTemplate(null);
                loadAvailableTemplates();
            };
            $scope.clearTitle = function () {
                $scope.article.title = '';
                $scope.onKnowledgeTitleChange();
            };
            $scope.onKnowledgeTitleChange = function (value) {
                state.similarArticles = [];
                state.loadingSimilarArticles = false;
                if (knowledgeTitleChangeTimer) {
                    $timeout.cancel(knowledgeTitleChangeTimer);
                }
                if (value && value.length >= 3) {
                    knowledgeTitleChangeTimer = $timeout(function () {
                        state.loadingSimilarArticles = true;
                        if (state.similarArticlePromise) {
                            state.similarArticlePromise.finally(function () {
                                state.loadingSimilarArticles = true;
                                state.similarArticles = [];
                            });
                        }
                        state.similarArticlePromise = knowledgeArticleModel.findArticleByText({ search_text: value }).then(function (articles) {
                            state.similarArticles = articles;
                            _.remove(state.similarArticles, { templateName: 'Decision Tree' }); //Currently not supporting decision tree
                        }).finally(function () {
                            state.loadingSimilarArticles = false;
                        });
                    }, 1000);
                }
            };
            $scope.mergeSimilarArticle = function (id) {
                state.dataIsLoading = true;
                knowledgeArticleModel.getKnowledgeArticleById(id).then(function (data) {
                    state.dataIsLoading = false;
                    state.showingMergeTool = true;
                    return openMergeTool({
                        input: data.content,
                        output: _.cloneDeep(article.content),
                        outputTitle: ['create.knowledge.merge.output.title'],
                        inputTitle: ['create.knowledge.merge.input.title.first', 'create.knowledge.merge.input.title.second']
                    });
                }).then(function (content) {
                    article.content = content;
                }).finally(function () {
                    state.showingMergeTool = false;
                });
            };
            $scope.updateSimilarArticle = function (id) {
                state.dataIsLoading = true;
                knowledgeArticleModel.getKnowledgeArticleById(id).then(function (data) {
                    state.dataIsLoading = false;
                    if (data.accessMappings.detailsEditAllowed) {
                        state.showingMergeTool = true;
                        return openMergeTool({
                            input: _.cloneDeep(article.content),
                            output: _.cloneDeep(data.content),
                            outputTitle: ['create.knowledge.merge.instead.output.title'],
                            inputTitle: ['create.knowledge.merge.instead.input.title.first', 'create.knowledge.merge.instead.input.title.second']
                        });
                    }
                    else {
                        systemAlertService.info({
                            text: $filter('i18n')('create.knowledge.similar.edit.instead.deny')
                        });
                        return $q.reject();
                    }
                }).then(function (content) {
                    openArticleForEdit(id, content);
                }).finally(function () {
                    state.showingMergeTool = false;
                });
            };
            function openArticleForEdit(id, content) {
                state.allowStateChange = true;
                $state.go('knowledge', { id: id, content: content, editMode: true });
            }
            function openMergeTool(mergeParams) {
                var parentScope = $scope;
                return $modal.open({
                    templateUrl: 'views/knowledge-article/article-merge-tool.html',
                    controller: ['$scope', '$modalInstance', 'mergeParams',
                        function ($scope, $modalInstance, mergeParams) {
                            $scope.input = { content: mergeParams.input };
                            $scope.output = { content: mergeParams.output };
                            $scope.outputTitle = mergeParams.outputTitle || [];
                            $scope.inputTitle = mergeParams.inputTitle || [];
                            $scope.merge = function () {
                                $modalInstance.close($scope.output.content);
                            };
                            parentScope.$on('$destroy', $modalInstance.close);
                        }
                    ],
                    windowClass: 'modal_article-merge-tool',
                    backdrop: false,
                    keyboard: false,
                    resolve: {
                        mergeParams: function () {
                            return mergeParams;
                        }
                    }
                }).result;
            }
            $scope.handleFileChange = function (fileInput) {
                var newAttachment = attachmentService.prepareFileToUpload({ fileInput: fileInput });
                if (newAttachment && newAttachment.size <= 0) {
                    systemAlertService.warning({
                        text: $filter('i18n')('attachment.file_empty'),
                        icon: 'icon-exclamation_triangle',
                        clear: true,
                        hide: 5000
                    });
                    return;
                }
                if (newAttachment) {
                    $scope.attachments ? $scope.attachments.push(newAttachment) : $scope.attachments = [newAttachment];
                }
            };
            $scope.dismissAttachment = function ($e, attachment) {
                var index = $scope.attachments.indexOf(attachment);
                if (index >= 0) {
                    $scope.attachments.splice(index, 1);
                }
                $e.stopImmediatePropagation();
            };
            $scope.addLinkedItem = function ($event) {
                var modalInstance = $modal.open({
                    templateUrl: 'views/ticket/link-item-action-blade.html',
                    windowClass: 'action-blade',
                    controller: 'LinkController',
                    resolve: {
                        linkParams: function () {
                            return {
                                selectedItems: [{
                                        id: null,
                                        type: EntityVO.TYPE_KNOWLEDGE
                                    }],
                                isDraft: true
                            };
                        }
                    }
                });
                modalInstance.result.then(function (linkedItems) {
                    Array.prototype.push.apply($scope.linkedItems, linkedItems);
                }).finally(function () {
                    $event.currentTarget.focus();
                });
            };
            $scope.removeLinkedItem = function (item) {
                _.pull($scope.linkedItems, item);
            };
            $scope.createArticle = function () {
                var createdArticle;
                $scope.state.dataIsLoading = true;
                $scope.article.allCategories = categoriesService.collectValues($scope.article.categoriesSet, $scope.article);
                saveSetOfVisibilityGroups(article.articleVisibilityGroup);
                article.title = article.title.replace(/\u00a0/g, ' ');
                article.parentTicketType = ticketModel.articleParent ? ticketModel.articleParent.type : '';
                setTimeout(function () {
                    knowledgeArticleModel.createArticle(currentUserId, article).then(function (result) {
                        createdArticle = result;
                        if (ticketModel.articleParent) {
                            delete ticketModel.articleParent;
                        }
                    }).then(function () {
                        var linkingPromise = $scope.linkedItems.length ? linkItems(createdArticle) : $q.when(1), attachmentPromise = $scope.attachments.length ? addAttachments(createdArticle) : $q.when(1);
                        knowledgeArticleModel.getArticleRevisionsById(createdArticle.id); //just to preload revisions, so user wont wait for them on article detail page.
                        return $q.all([linkingPromise, attachmentPromise]);
                    }).then(function () {
                        $scope.onCreateArticleCompleted(createdArticle);
                    }).catch(function (error) {
                        systemAlertService.error({
                            text: (error.data.defaultMessage) || (error.data.errorCode ? $filter('i18n')('error.unknown') : error.data.error)
                        });
                    }).finally(function () {
                        $scope.state.dataIsLoading = false;
                    });
                }, 200);
            };
            function saveSetOfVisibilityGroups(visibilities) {
                localStorageService.set(localStorageLastVisibilitySetKey, visibilities);
            }
            function linkItems(createdArticle) {
                return relationModel.addRelation({
                    uuid: createdArticle.id,
                    type: EntityVO.TYPE_KNOWLEDGE
                }, _.map($scope.linkedItems, function (item) {
                    return _.omit(item, ['realObject', 'isPoi']);
                }));
            }
            function addAttachments(createdArticle) {
                return attachmentService.uploadAttachment(createdArticle.type, createdArticle.id, $scope.attachments);
            }
            $scope.onCreateArticleCompleted = function (createdArticle) {
                state.allowStateChange = true;
                $state.go('knowledge', { id: createdArticle.id });
            };
            $scope.cancel = function () {
                if ($scope.previousTemplate) {
                    state.isTemplateSelected = true;
                    state.isTemplateAccepted = true;
                    $scope.selectedTemplate = _.cloneDeep($scope.previousTemplate);
                    $scope.previousTemplate = null;
                }
                else {
                    //trick to avoid triggering $stateChangeStart event
                    $state.go('dashboard', {}, { notify: false }).then(function () {
                        $scope.$emit('$stateChangeSuccess');
                    });
                }
            };
            $scope.discard = function () {
                showLeaveCreateKnowledgeArticleDialog().then(function (result) {
                    result && $scope.cancel();
                });
            };
            function showLeaveCreateKnowledgeArticleDialog() {
                var modal = systemAlertService.modal({
                    type: 'info',
                    title: $filter('i18n')('common.notification.dirty.title'),
                    text: $filter('i18n')('common.notification.dirty.loseChanges'),
                    buttons: [
                        {
                            text: $filter('i18n')('common.button.yes'),
                            data: true
                        },
                        {
                            text: $filter('i18n')('common.button.no'),
                            data: false
                        }
                    ]
                });
                return modal.result;
            }
            function isArticleDirty() {
                return isArticleTitleDirty() || isArticleContentDirty() || isArticleMetadataDirty();
            }
            function isArticleContentDirty() {
                var rawContent = getRawArticleContent();
                return !angular.equals(draftArticle.content, rawContent);
            }
            function isArticleTitleDirty() {
                return article.title && article.title.trim();
            }
            function isArticleMetadataDirty() {
                var articleMetadata = _.omit(article, ['categoriesControls', 'content', 'title']), draftArticleMetadata = _.omit(article, ['categoriesControls', 'content', 'title']);
                return !angular.equals(articleMetadata, draftArticleMetadata);
            }
            function getRawArticleContent() {
                var articleContentCopy = _.cloneDeep(article.content);
                return _.map(articleContentCopy, function (section) {
                    section.snippet = $(section.snippet).text();
                    return section;
                });
            }
            $scope.state = state;
            $scope.article = article;
            $scope.searchService = searchService;
            $scope.$on('$stateChangeStart', function (event, toState, toParams) {
                if (!state.allowStateChange && state.isTemplateSelected && state.isTemplateAccepted && isArticleDirty()) {
                    event.preventDefault();
                    showLeaveCreateKnowledgeArticleDialog().then(function (result) {
                        if (result) {
                            state.allowStateChange = true;
                            $state.go(toState.name, toParams);
                        }
                    });
                }
            });
        }
    ])
        .controller('CreateKnowledgeArticleModalController', ['$scope', '$controller', '$modalInstance', 'ticketModel',
        function ($scope, $controller, $modalInstance, ticketModel) {
            function initArticleContext() {
                if (ticketModel.articleParent.type === EntityVO.TYPE_PROBLEM ||
                    ticketModel.articleParent.type === EntityVO.TYPE_KNOWNERROR ||
                    ticketModel.articleParent.type === EntityVO.TYPE_INCIDENT ||
                    ticketModel.articleParent.type === EntityVO.TYPE_WORKORDER) {
                    $scope.articleContext = {
                        id: ticketModel.articleParent.id,
                        type: ticketModel.articleParent.type
                    };
                }
            }
            initArticleContext();
            $.extend(this, $controller('CreateKnowledgeArticleController', { $scope: $scope }));
            $scope.onCreateArticleCompleted = function (createdArticle) {
                $modalInstance.close(createdArticle);
            };
            $scope.cancel = function () {
                $modalInstance.dismiss();
            };
            $scope.$on('$stateChangeSuccess', $modalInstance.dismiss);
        }
    ]);
})();