(function () {
    'use strict';
    var app = angular.module('comments');

    var templatePath = modulesSharedResourcesUrl + 'Modules/Comments/Views/';
  
    //a directive that renders the list of marking schemes
    app.directive('comments', ['commentsDataContext', 'commentsService', 'user', 'common', '$location', '$modal', 'myUsersDataContext', function (commentsDataContext, commentsService, user, common, $location, $modal, myUsersDataContext) {
        return {
            restrict: 'EA',
            templateUrl: templatePath + 'comments.html',
            scope: {
                externalId: '=',
                userId: '=',
                allowPrivate: '=',
                commentCount: '=',
                admin: '='
            },
            link: link
        };

        function link(scope, $scope, elem, attrs) {
            var getLogFn = common.logger.getLogFn;
            var logSuccess = getLogFn("comments", "success");
            var logError = getLogFn("comments", "error");

            scope.comments = [];

            scope.$watch('externalId', function (newval, oldval) {
                if (newval) {
                    scope.comments = [];
                    getComments();
                }
            }, true);

            function getComments() {
                scope.commentCount = 0;
                commentsDataContext.getCommentByExternalId(scope.externalId, scope.userId).then(function (data) {
                   
                    for (var i = 0; i < data.length; i++) {
                        scope.commentCount = scope.commentCount + 1;
                        scope.commentCount = scope.commentCount + data[i].childCommentsCount;
                        if (data[i].childComments) {
                            countChildComments(data[i].childComments)
                        }
                    }
                    scope.comments = data;
                    scope.commentsLoaded = true;
                });
            }

            scope.newComment = commentsService.createBlankComment(scope.externalId);

            scope.createComment = function (comment, reply, form) {
                comment.originator = scope.userId;
                if (!reply) {
                    comment.externalId = scope.externalId;
                }
                commentsDataContext.createComment(comment).then(function (data) {
                    scope.commentCount = scope.commentCount + 1;
                    comment.content = '';
                    comment.addReply = false;
                    comment.isPrivate = false;
                    form.$setPristine();

                    // We don't want to have to call the service to get comments again so we either push the comment to the root array or we find it's parent and push to it's child comments
                    if (!reply) {
                        scope.comments.push(data);
                    } else {
                        for (var i = 0; i < scope.comments.length; i++) {
                            if (scope.comments[i].id == comment.parentId) {
                                scope.comments[i].childComments.push(data);
                                return;
                            }
                            if (scope.comments[i].childComments) {
                                findParentComment(scope.comments[i].childComments, comment.parentId, data);
                            }
                        }
                    }
                });
            }

            function countChildComments(comments) {
                for (var i = 0; i < comments.length; i++) {
                    scope.commentCount = scope.commentCount + comments[i].childCommentsCount;
                    if (comments[i].childComments) {
                        countChildComments(comments[i].childComments);
                    }
                }              
            }



            function findParentComment(comments, parentId, comment) {
                for (var i = 0; i < comments.length; i++) {
                    if (comments[i].id == parentId) {
                        comments[i].childComments.push(comment);
                        return comments;
                    }
                    if (comments[i].childComments) {
                        findParentComment(comments[i].childComments, parentId, comment);
                    }
                    // return comments;
                }
            }

            scope.getCommentUser = function (comment) {
                if (!comment.user) {
                    user.getUserProfile(comment.originator).then(function (data) {
                        comment.user = data;
                    });
                }
            }

            scope.deleteComment = function (comment) {
                commentsDataContext.deleteComment(comment).then(function (data) {
                    logSuccess("Comment deleted");
                    getComments();
                });
            }

        }
    }]);

    //a directive that renders the list of marking schemes
    app.directive('getComment', ['commentsDataContext', 'commentsService', 'user', 'common', '$location', '$modal', 'myUsersDataContext', function (commentsDataContext, commentsService, user, common, $location, $modal, myUsersDataContext) {
        return {
            restrict: 'EA',
            templateUrl: templatePath + 'comment.html',
            scope: {
                commentId: '=',
            },
            link: link
        };

        function link(scope, $scope, elem, attrs) {
            var getLogFn = common.logger.getLogFn;
            var logSuccess = getLogFn("comments", "success");
            var logError = getLogFn("comments", "error");


            scope.$watch('commentId', function (newval, oldval) {
                if (newval) {
                    scope.comment = {};
                    getComment();
                }
            }, true);

            function getComment() {
                commentsDataContext.getCommentById(scope.commentId).then(function (data) {
                    scope.comment = data;
                });
            }


        }
    }]);
})();