(function () {

"use strict";

angular.module('OpenSlidesApp.motions.motionservices', ['OpenSlidesApp.motions', 'OpenSlidesApp.motions.lineNumbering'])

.factory('MotionPDFExport', [
    'HTMLValidizer',
    'Motion',
    'User',
    'PdfMakeConverter',
    'PdfMakeDocumentProvider',
    'PdfMakeBallotPaperProvider',
    'MotionContentProvider',
    'PollContentProvider',
    'gettextCatalog',
    '$http',
    'PdfCreate',
    function (HTMLValidizer, Motion, User, PdfMakeConverter, PdfMakeDocumentProvider, PdfMakeBallotPaperProvider,
            MotionContentProvider, PollContentProvider, gettextCatalog, $http, PdfCreate) {
        var obj = {};

        var $scope;

        obj.createMotion = function() {
            var text = $scope.motion.getTextByMode($scope.viewChangeRecommendations.mode, $scope.version);
            var content = HTMLValidizer.validize(text) + HTMLValidizer.validize($scope.motion.getReason($scope.version));
            var map = Function.prototype.call.bind([].map);
            var image_sources = map($(content).find("img"), function(element) {
                return element.getAttribute("src");
            });

            $http.post('/core/encode_media/', JSON.stringify(image_sources)).then(function (success) {
                var converter = PdfMakeConverter.createInstance(success.data.images);
                var motionContentProvider = MotionContentProvider.createInstance(converter, $scope.motion, $scope, User, $http);
                var documentProvider = PdfMakeDocumentProvider.createInstance(motionContentProvider);
                var identifier = $scope.motion.identifier ? '-' + $scope.motion.identifier : '';
                var filename = gettextCatalog.getString("Motion") + identifier + ".pdf";
                PdfCreate.download(documentProvider.getDocument(), filename);
            });
        };

        //make PDF for polls
        obj.createPoll = function() {
            var id = $scope.motion.identifier.replace(" ", "");
            var title = $scope.motion.getTitle($scope.version);
            var filename = gettextCatalog.getString("Motion") + "-" + id + "-" + gettextCatalog.getString("ballot-paper") + ".pdf";
            var pollContentProvider = PollContentProvider.createInstance(title, id, gettextCatalog);
            var documentProvider = PdfMakeBallotPaperProvider.createInstance(pollContentProvider);
            PdfCreate.download(documentProvider.getDocument(), filename);
        };

        obj.init = function (_scope) {
            $scope = _scope;
        };

        return obj;
    }
])

.factory('MotionInlineEditing', [
    'Editor',
    'Motion',
    '$timeout',
    'gettextCatalog',
    function (Editor, Motion, $timeout, gettextCatalog) {
        var createInstance = function ($scope, motion, selector, versioning, getOriginalData, saveData) {
            var obj = {
                active: false,
                changed: false,
                isEditable: false,
                trivialChange: false,
                originalHtml: null,
                ckeditorOptions: Editor.getOptions(),
            };
            obj.ckeditorOptions.readOnly = true;

            obj.setVersion = function (_motion, versionId) {
                motion = _motion; // If this is not updated,
                obj.originalHtml = motion.getTextWithLineBreaks(versionId);
                obj.changed = false;
                if (obj.editor) {
                    obj.editor.setReadOnly(true);
                    obj.editor.setData(obj.originalHtml);
                }
            };

            obj.enable = function () {
                obj.active = true;
                obj.isEditable = true;
                obj.ckeditorOptions.language = gettextCatalog.getCurrentLanguage();
                obj.editor = CKEDITOR.inline(selector, obj.ckeditorOptions);
                obj.editor.on('change', function () {
                    $timeout(function() {
                        if (obj.editor.getData() != obj.originalHtml) {
                            obj.changed = true;
                        } else {
                            obj.changed = false;
                        }
                    });
                });
                obj.revert();
            };

            obj.disable = function () {
                if (obj.editor) {
                    obj.editor.setReadOnly(true);
                    obj.editor.setData(obj.originalHtml, {
                        callback: function() {
                            obj.editor.destroy();
                        }
                    });
                }
                $timeout(function() {
                    obj.active = false;
                    obj.changed = false;
                    obj.isEditable = false;
                });
            };

            // sets editor content to the initial motion state
            obj.revert = function(originalData) {
                if (obj.editor) {
                    obj.originalHtml = getOriginalData(obj);
                    obj.editor.setData(
                        getOriginalData(obj), {
                        callback: function() {
                            obj.originalHtml = obj.editor.getData();
                            obj.editor.setReadOnly(false);
                            $timeout(function() {
                                obj.changed = false;
                            });
                            $timeout(function () {
                                obj.editor.focus();
                            }, 100);
                        }
                    });
                }
            };

            obj.save = function () {
                saveData(obj);
                obj.disable();

                Motion.inject(motion);
                // save change motion object on server
                Motion.save(motion, {method: 'PATCH'}).then(
                    function (success) {
                        if (versioning) {
                            $scope.showVersion(motion.getVersion(-1));
                        }
                        obj.revert();
                    },
                    function (error) {
                        // save error: revert all changes by restore
                        // (refresh) original motion object from server
                        Motion.refresh(motion);
                        obj.revert();
                        var message = '';
                        for (var e in error.data) {
                            message += e + ': ' + error.data[e] + ' ';
                        }
                        $scope.alert = {type: 'danger', msg: message, show: true};
                    }
                );
            };

            return obj;
        };
        return {
            createInstance: createInstance
        };
    }
])

.factory('MotionCommentsInlineEditing', [
    'MotionInlineEditing',
    function (MotionInlineEditing) {
        var createInstances = function ($scope, motion) {
            var commentsInlineEditing = {
                editors: []
            };
            _.forEach($scope.commentsFields, function (field) {
                var inlineEditing = MotionInlineEditing.createInstance($scope, motion,
                    'view-original-comment-inline-editor-' + field.name, false,
                    function (obj) {
                        return motion['comment ' + field.name];
                    },
                    function (obj) {
                        motion.title = motion.getTitle(-1);
                        motion.text = motion.getText(-1);
                        motion.reason = motion.getReason(-1);
                        motion['comment ' + field.name] = obj.editor.getData();
                    }
                );
                commentsInlineEditing.editors.push(inlineEditing);
            });
            commentsInlineEditing.saveToolbarVisible = function () {
                return _.some(commentsInlineEditing.editors, function (instance) {
                    return instance.changed && instance.active;
                });
            };
            commentsInlineEditing.active = function () {
                return _.some(commentsInlineEditing.editors, function (instance) {
                    return instance.active;
                });
            };
            commentsInlineEditing.save = function () {
                _.forEach(commentsInlineEditing.editors, function (instance) {
                    instance.save();
                });
            };
            commentsInlineEditing.revert = function () {
                _.forEach(commentsInlineEditing.editors, function (instance) {
                    instance.revert();
                });
            };
            commentsInlineEditing.enable = function () {
                _.forEach(commentsInlineEditing.editors, function (instance) {
                    instance.enable();
                });
            };
            commentsInlineEditing.disable = function () {
                _.forEach(commentsInlineEditing.editors, function (instance) {
                    instance.disable();
                });
            };

            return commentsInlineEditing;
        };
        return {
            createInstances: createInstances,
        };
    }
])

.factory('ChangeRecommmendationCreate', [
    'ngDialog',
    'ChangeRecommendationForm',
    function(ngDialog, ChangeRecommendationForm) {
        var MODE_INACTIVE = 0,
            MODE_SELECTING_FROM = 1,
            MODE_SELECTING_TO = 2;

        var obj = {
            mode: MODE_INACTIVE,
            lineFrom: 1,
            lineTo: 2,
            html: '',
            reviewingHtml: ''
        };

        var $scope, motion, version;

        obj._getAffectedLineNumbers = function () {
            var changeRecommendations = motion.getChangeRecommendations(version),
                affectedLines = [];
            for (var i = 0; i < changeRecommendations.length; i++) {
                var change = changeRecommendations[i];
                for (var j = change.line_from; j < change.line_to; j++) {
                    affectedLines.push(j);
                }
            }
            return affectedLines;
        };

        obj.startCreating = function () {
            if (obj.mode > MODE_SELECTING_FROM || !motion.isAllowed('can_manage')) {
                return;
            }

            $(".tt_change_recommendation_create_help").removeClass("opened");
            var $lineNumbers = $(".motion-text-original .os-line-number");
            if ($lineNumbers.filter(".selectable").length === 0) {
                obj.mode = MODE_SELECTING_FROM;
                var alreadyAffectedLines = obj._getAffectedLineNumbers();
                $lineNumbers.each(function () {
                    var $this = $(this),
                        lineNumber = $this.data("line-number");
                    if (alreadyAffectedLines.indexOf(lineNumber) == -1) {
                        $(this).addClass("selectable");
                    }
                });
            }
        };

        obj.cancelCreating = function (ev) {
            var $target = $(ev.target),
                query = ".line-numbers-outside .os-line-number.selectable";
            if (!$target.is(query) && $target.parents(query).length === 0) {
                obj.mode = MODE_INACTIVE;
                obj.lineFrom = 0;
                obj.lineTo = 0;
                $(".motion-text-original .os-line-number").removeClass("selected selectable");
                obj.startCreating();
            }
        };

        obj.setFromLine = function (line) {
            obj.mode = MODE_SELECTING_TO;
            obj.lineFrom = line;

            var alreadyAffectedLines = obj._getAffectedLineNumbers(),
                foundCollission = false;

            $(".motion-text-original .os-line-number").each(function () {
                var $this = $(this);
                if ($this.data("line-number") >= line && !foundCollission) {
                    if (alreadyAffectedLines.indexOf($this.data("line-number")) == -1) {
                        $(this).addClass("selectable");
                    } else {
                        $(this).removeClass("selectable");
                        foundCollission = true;
                    }
                } else {
                    $(this).removeClass("selectable");
                }
            });

            var tt_pos = $(".motion-text-original .line-number-" + line).position().top - 45;
            $(".tt_change_recommendation_create_help").css("top", tt_pos).addClass("opened");
        };

        obj.setToLine = function (line) {
            if (line < obj.lineFrom) {
                return;
            }
            obj.mode = MODE_INACTIVE;
            obj.lineTo = line + 1;
            ngDialog.open(ChangeRecommendationForm.getCreateDialog(
                motion,
                version,
                obj.lineFrom,
                obj.lineTo
            ));

            obj.lineFrom = 0;
            obj.lineTo = 0;
            $(".motion-text-original .os-line-number").removeClass("selected selectable");
            obj.startCreating();
        };

        obj.lineClicked = function (ev) {
            if (obj.mode == MODE_INACTIVE) {
                return;
            }
            if (obj.mode == MODE_SELECTING_FROM) {
                obj.setFromLine($(ev.target).data("line-number"));
                $(ev.target).addClass("selected");
            } else if (obj.mode == MODE_SELECTING_TO) {
                obj.setToLine($(ev.target).data("line-number"));
            }
        };

        obj.mouseOver = function (ev) {
            if (obj.mode != MODE_SELECTING_TO) {
                return;
            }
            var hoverLine = $(ev.target).data("line-number");
            $(".motion-text-original .os-line-number").each(function () {
                var line = $(this).data("line-number");
                if (line >= obj.lineFrom && line <= hoverLine) {
                    $(this).addClass("selected");
                } else {
                    $(this).removeClass("selected");
                }
            });
        };

        obj.setVersion = function (_motion, _version) {
            motion = _motion;
            version = _version;
        };

        obj.editDialog = function(change_recommendation) {
            ngDialog.open(ChangeRecommendationForm.getEditDialog(change_recommendation));
        };

        obj.init = function (_scope, _motion) {
            $scope = _scope;
            motion = _motion;
            version = $scope.version;

            var $content = $("#content");
            $content.on("click", ".line-numbers-outside .os-line-number.selectable", obj.lineClicked);
            $content.on("click", obj.cancelCreating);
            $content.on("mouseover", ".line-numbers-outside .os-line-number.selectable", obj.mouseOver);
            $content.on("mouseover", ".motion-text-original", obj.startCreating);

            $scope.$watch(function () {
                return $scope.change_recommendations.length;
            }, function () {
                if (obj.mode == MODE_INACTIVE || obj.mode == MODE_SELECTING_FROM) {
                    // Recalculate the affected lines so we cannot select lines affected by a recommendation
                    // that has just been created
                    $(".motion-text-original .os-line-number").removeClass("selected selectable");
                    obj.startCreating();
                }
            });

            $scope.$on("$destroy", function () {
                obj.destroy();
            });
        };

        obj.destroy = function () {
            var $content = $("#content");
            $content.off("click", ".line-numbers-outside .os-line-number.selectable", obj.lineClicked);
            $content.off("click", obj.cancelCreating);
            $content.off("mouseover", ".line-numbers-outside .os-line-number.selectable", obj.mouseOver);
            $content.off("mouseover", ".motion-text-original", obj.startCreating);
        };

        return obj;
    }
])

.factory('ChangeRecommmendationView', [
    'Motion',
    'MotionChangeRecommendation',
    'Config',
    'lineNumberingService',
    'diffService',
    '$interval',
    '$timeout',
    function (Motion, MotionChangeRecommendation, Config, lineNumberingService, diffService, $interval, $timeout) {
        var $scope;

        var obj = {
            mode: 'original'
        };

        obj.diffFormatterCb = function (change, oldFragment, newFragment) {
            for (var i = 0; i < oldFragment.childNodes.length; i++) {
                diffService.addCSSClass(oldFragment.childNodes[i], 'delete');
            }
            for (i = 0; i < newFragment.childNodes.length; i++) {
                diffService.addCSSClass(newFragment.childNodes[i], 'insert');
            }
            var mergedFragment = document.createDocumentFragment(),
                diffSection = document.createElement('SECTION'),
                el;

            mergedFragment.appendChild(diffSection);
            diffSection.setAttribute('class', 'diff');
            diffSection.setAttribute('data-change-id', change.id);

            while (oldFragment.firstChild) {
                el = oldFragment.firstChild;
                oldFragment.removeChild(el);
                diffSection.appendChild(el);
            }
            while (newFragment.firstChild) {
                el = newFragment.firstChild;
                newFragment.removeChild(el);
                diffSection.appendChild(el);
            }

            return mergedFragment;
        };

        obj.delete = function (changeId) {
            MotionChangeRecommendation.destroy(changeId);
        };

        obj.rejectAll = function (motion) {
            var changeRecommendations = MotionChangeRecommendation.filter({
                'where': {'motion_version_id': {'==': motion.active_version}}
            });
            _.forEach(changeRecommendations, function(change) {
                change.rejected = true;
                change.saveStatus();
            });
        };

        obj.repositionOriginalAnnotations = function () {
            var $changeRecommendationList = $('.change-recommendation-list'),
                $lineNumberReference = $('.motion-text-original');

            $changeRecommendationList.children().each(function() {
                var $this = $(this),
                    lineFrom = $this.data('line-from'),
                    lineTo = ($this.data('line-to') - 1),
                    $lineFrom = $lineNumberReference.find('.line-number-' + lineFrom),
                    $lineTo = $lineNumberReference.find('.line-number-' + lineTo),
                    fromTop = $lineFrom.position().top + 3,
                    toTop = $lineTo.position().top + 20,
                    height = (toTop - fromTop);

                if (height < 10) {
                    height = 10;
                }

                // $lineFrom.position().top seems to depend on the scrolling position when the line numbers
                // have position: absolute. Maybe a bug in the used version of jQuery?
                // This cancels the effect.
                /*
                if ($lineNumberReference.hasClass('line-numbers-outside')) {
                    fromTop += window.scrollY;
                }
                */

                $this.css({ 'top': fromTop, 'height': height });
            });
        };

        obj.newVersionIncludingChanges = function (motion, version) {
            if (!motion.isAllowed('update')) {
                throw 'No permission to update motion';
            }

            var newHtml = motion.getTextByMode('agreed');
            motion.setTextStrippingLineBreaks(newHtml);

            Motion.inject(motion);
            // save change motion object on server
            Motion.save(motion, {method: 'PATCH'}).then(
                function (success) {
                    $scope.showVersion(motion.getVersion(-1));
                },
                function (error) {
                    // save error: revert all changes by restore
                    // (refresh) original motion object from server
                    Motion.refresh(motion);
                    var message = '';
                    for (var e in error.data) {
                        message += e + ': ' + error.data[e] + ' ';
                    }
                    $scope.alert = {type: 'danger', msg: message, show: true};
                }
            );
        };

        obj.scrollToDiffBox = function (changeId) {
            obj.mode = 'diff';
            $timeout(function() {
                var $diffBox = $('.diff-box-' + changeId);
                $('html, body').animate({
                    scrollTop: $diffBox.offset().top - 50
                }, 300);
            }, 0, false);
        };

        obj.init = function (_scope, viewMode) {
            $scope = _scope;
            $scope.$evalAsync(function() {
                obj.repositionOriginalAnnotations();
            });
            $scope.$watch(function() {
                return $('.change-recommendation-list').children().length;
            }, obj.repositionOriginalAnnotations);
            $scope.$watch(function () {
                return $scope.change_recommendations.length;
            }, function () {
                if ($scope.change_recommendations.length === 0) {
                    obj.mode = 'original';
                }
            });

            var sizeCheckerLastSize = null,
                sizeCheckerLastClass = null,
                sizeChecker = $interval(function() {
                    var $holder = $(".motion-text-original"),
                        newHeight = $holder.height(),
                        classes = $holder.attr("class");
                    if (newHeight != sizeCheckerLastSize || sizeCheckerLastClass != classes) {
                        sizeCheckerLastSize = newHeight;
                        sizeCheckerLastClass = classes;
                        obj.repositionOriginalAnnotations();
                    }
                }, 100, 0, false);

            $scope.$on('$destroy', function() {
                $interval.cancel(sizeChecker);
            });

            obj.mode = viewMode;
        };

        return obj;
    }
]);

}());