(function() {
    "use strict";

    angular.module('shared')
        .component('folderListItem', {
            templateUrl: '/shared/js/angular/folder-list/folder-list-item.html',
            controller: 'FolderListItem',
            bindings: {
                folder: '<',
                selectFolder: '<',
                saveNewFolder: '<',
                folderIndex: '<',
                scrollAllowed: '<'
            }
        })
        .controller('FolderListItem', ['$scope', 'folderListItemAmbassador', 'folders', '_',
            function FolderListItemController($scope, folderListItemAmbassador, folders, _) {
                var ctrl = this;
                var folderDepthLimit = 8;
                var SHOWN_FOLDERS_INITIAL_DEPTH = 2;
                ctrl.folderListItemHeight = 27;
                ctrl.newFolderName = "";
                ctrl.isAddNestedActive = false;

                ctrl.$onInit = function() {
                    folderListItemAmbassador.registerOnActiveFolderListItemChanged($scope, onActiveFolderListItemChanged);
                    onActiveFolderListItemChanged();

                    ctrl.folder.showFolders = folders.getDepth(ctrl.folder) < SHOWN_FOLDERS_INITIAL_DEPTH;
                    var previousShownFolders = folderListItemAmbassador.getPreviousShownFolders();

                    if (previousShownFolders && !_.isEmpty(previousShownFolders)) {
                        ctrl.folder.showFolders = folderListItemAmbassador.findPreviousShownFolders(ctrl.folder.id);
                    }

                    ctrl.parentFolder = folders.findParent(ctrl.folder);

                    ctrl.hideFolderToggle = ctrl.parentFolder === null || !ctrl.folder.children;

                    if (ctrl.parentFolder !== null) {
                        setShowChildFolders(ctrl.folder.showFolders);
                    }
                };

                ctrl.isLiteracyEditor = function() {
                    return folders.getIsLiteracyEditor();
                };

                ctrl.showAddNestedFolderButton = function() {
                    return !ctrl.isAddNestedActive && folders.getDepth(ctrl.folder) < folderDepthLimit;
                };

                ctrl.onClick = function(event) {
                    folderListItemAmbassador.setActiveFolderListItem(ctrl.folder);
                    event.stopPropagation();
                };

                ctrl.controlEventPropagation = function(event) {
                    if (ctrl.isAddNestedActive) {
                        event.stopPropagation();
                    }
                };

                ctrl.addNewFolder = function(parentId) {
                    ctrl.saveNewFolder(parentId, ctrl.newFolderName);
                };

                ctrl.cancelNestedFolder = function() {
                    folderListItemAmbassador.resetActiveFolderListItem();
                };

                ctrl.isAddButtonDisabled = function() {
                    return (!ctrl.newFolderName || ctrl.newFolderName.trim().length < 1);
                };

                ctrl.openMoreFolders = function(event) {
                    folderListItemAmbassador.resetActiveFolderListItem();
                    folderListItemAmbassador.resetSelectedFolderListItem();

                    ctrl.scrollAllowed = false;

                    toggleShowChildFolders();

                    event.stopPropagation();
                };

                function setShowChildFolders(doShow) {
                    var folderId = ctrl.folder.id;
                    _.each(ctrl.parentFolder.children, function(childFolder, index) {
                        if (this[index].id === folderId) {
                            this[index].showFolders = doShow;
                        }
                    }, ctrl.parentFolder.children);
                }

                function toggleShowChildFolders() {
                    var folderId = ctrl.folder.id;
                    _.each(ctrl.parentFolder.children, function(childFolder, index) {
                        if (this[index].id === folderId) {
                            this[index].showFolders = !childFolder.showFolders;
                        }

                    }, ctrl.parentFolder.children);
                }

                function onActiveFolderListItemChanged() {
                    var activeFolderListItem = folderListItemAmbassador.getActiveFolderListItem();
                    ctrl.isAddNestedActive = activeFolderListItem.id === ctrl.folder.id;
                    ctrl.newFolderName = "";
                }
            }])
})();