Template.lesionTable.helpers({
    measurement: function() {
        // All Targets shall be listed first followed by Non-Targets
        return Measurements.find({}, {
            sort: {
                isTarget: -1,
                lesionNumberAbsolute: 1
            }
        });
    },
    timepoints: function() {
        return Timepoints.find({}, {
            sort: {
                timepointName: 1
            }
        });
    }
});

Template.lesionTable.events({
    'click table#tblLesion tbody tr': function(e, template) {
        // Retrieve the lesion id from the DOM data for this row
        var measurementId = $(e.currentTarget).data('measurementid');

        activateLesion(measurementId, template.data);
    },
    'mousedown div#dragbar': function(e, template) {
        var pY = e.pageY;
        var draggableParent = $(e.currentTarget).parent();
        var startHeight = draggableParent.height();
        template.dragging.set(true);

        $(document).on('mouseup', function(e) {
            template.dragging.set(false);
            $(document).off('mouseup').off('mousemove');
        });

        $(document).on('mousemove', function(e) {
            var topPosition = e.pageY - pY;
            var newHeight = startHeight - topPosition;

            // Min lesion table height = 5px
            if (newHeight < 5) {
                return;
            }

            draggableParent.css({
                top: topPosition,
                height: newHeight
            });

            var viewportAndLesionTableHeight = $('#viewportAndLesionTable').height();
            var newPercentageHeightofLesionTable = (startHeight - topPosition) / viewportAndLesionTableHeight * 100;
            var newPercentageHeightofViewermain = 100 - newPercentageHeightofLesionTable;
            $('.viewerMain').height(newPercentageHeightofViewermain + '%');

            // Resize viewport
            resizeViewportElements();
        });
    }
});

Template.lesionTable.onCreated(function() {
    this.dragging = new ReactiveVar(false);
});

// Temporary until we have a real window manager with events for series/study changed
Session.setDefault('NewSeriesLoaded', false);

Template.lesionTable.onRendered(function() {
    var self = this;

    // Track ViewerData to get active timepoints
    // Put a visual indicator (<) in timepoint header in lesion table for active timepoints
    // timepointLoaded property is used to put indicator for loaded timepoints in viewport
    self.autorun(function() {
        // Temporary until we have a real window manager with events for series/study changed
        if (!Session.get('NewSeriesLoaded')) {
            return;
        }

        console.log('ViewerData changed, check for displayed timepoints');

        // Get study dates of imageViewerViewport elements
        var loadedStudyDates = {
            patientId: '',
            dates: []
        };

        var viewports = $('.imageViewerViewport').not('.empty');
        viewports.each(function(index, element) {
            var enabledElement = cornerstone.getEnabledElement(element);
            if (!enabledElement || !enabledElement.image) {
                return;
            }

            var imageId = enabledElement.image.imageId;
            var study = cornerstoneTools.metaData.get('study', imageId);
            var studyDate = study.studyDate;
            loadedStudyDates.patientId = study.patientId;

            // Check whether or not studyDate has been added before
            if (loadedStudyDates.dates.indexOf(studyDate) < 0) {
                loadedStudyDates.dates.push(studyDate);
            }
        });

        // If study date is loaded into viewport, set timepointLoaded property in Timepoints collection as true
        // Else set timepointLoaded property as false
        if (!loadedStudyDates.dates.length) {
            return;
        }

        var timepoints = Timepoints.find({
            patientId: loadedStudyDates.patientId
        }, {
            reactive: false
        });

        timepoints.forEach(function(timepoint) {
            var timepointLoaded = false;
            if (loadedStudyDates.dates.indexOf(timepoint.timepointName) > -1) {
                timepointLoaded = true;
            }

            Timepoints.update(timepoint._id, {
                $set: {
                    timepointLoaded: timepointLoaded
                }
            });
        });

        // Temporary until we have a real window manager with events for series/study changed
        Session.set('NewSeriesLoaded', false);
    });
});