//功能名称
const functionNames = [
    "Magnify", "Pan", "Zoom", "ZoomMouseWheel", "Wwwc",
    "ScaleOverlay", "OrientationMarkers", "WwwcRegion", "Rotate", "Angle", "ArrowAnnotate", "Bidirectional", "CobbAngle", "EllipticalRoi", "FreehandRoi", "Length", "Probe", "RectangleRoi", "TextMarker",
    "StackScroll", "StackScrollMouseWheel"
]

//标尺和方向显示可与其他状态同时启用
const displayFunctions = ["ScaleOverlay", "OrientationMarkers"]

//不能同时启用的功能
const notNeedDisableFunctions = ["WwwcRegion", "Rotate", "Angle", "ArrowAnnotate", "Bidirectional", "CobbAngle", "EllipticalRoi", "FreehandRoi", "Length", "Probe", "RectangleRoi", "TextMarker"]

//状态数据
var stateData = {
    rowCount: 1,
    columnCount: 1,
    imgIndex: 0,
    element: {},
    dicomInfo: {},
    showMapping: new Map()
}

/*切换工具*/
function switchAction(tagName, flag, btn) {
    //btn btn-primary
    var isSelected = $(btn).hasClass('selected');
    if (isSelected) {
        $(btn).removeClass("btn-primary")
        $(btn).removeClass("selected")
        $(btn).addClass("btn-default")
        disableFunctions(tagName);
    }
    else {
        disableFunctions(tagName);
        $(btn).removeClass("btn-default")
        $(btn).addClass("btn-primary")
        $(btn).addClass("selected")
    }
    if (!isSelected) {
        cornerstoneTools.setToolActive(tagName, { mouseButtonMask: 1 })
    }
}

function reload() {
    var data = cornerstoneTools.getToolState(stateData.element, "stack").data[0];
    var index = data.currentImageIdIndex;
    var imgId = data.imageIds[index];
    data.currentImageIdIndex = index;
    cornerstone.loadAndCacheImage(imgId).then(function (image) {
        cornerstone.enable(stateData.element);
        cornerstone.displayImage(stateData.element, image);
    });
}

//下一张
function next(imgId) {
    if (imgId && stateData.element != imgId) {
        return;
    }
    var data = cornerstoneTools.getToolState(stateData.element, "stack").data[0];
    var index = data.currentImageIdIndex;
    if (index == data.imageIds.length - 1) {
        return;
    }
    else {
        index += 1;
    }
    var imgId = data.imageIds[index];
    data.currentImageIdIndex = index;
    cornerstone.loadAndCacheImage(imgId).then(function (image) {
        cornerstone.enable(stateData.element);
        cornerstone.displayImage(stateData.element, image);
        renderTagText(stateData.element,image)
    });
    for (var i = 0; i < 10; i++) {
        if (index + i == data.imageIds.length - 1) {
            break;
        }
        cornerstone.loadImage(data.imageIds[index + i]).then((image) => {
            console.log("loaded ok " + data.imageIds[index + i]);
        })
    }
    setSliderValue(stateData.element.id)
}

//读取文件中的标签信息
function getDicomInfo(image) {
    var imageInfo = {};
    imageInfo.seriesNumber = image.data.string('x00200011');//图像序列号
    imageInfo.imageNum = image.data.string('x00200013');//图像位置
    imageInfo.imageDate = image.data.string("x00080021");//拍摄日期
    imageInfo.sliceThickness = image.data.string('x00180050');//层厚
    imageInfo.patientId = image.data.string('x00100020');//病理号
    // 判断窗宽窗位是否合法
    imageInfo.pixelR = image.data.uint16('x00280103');
    imageInfo.heightBit = image.data.uint16('x00280102') || '';
    // 病人基本信息
    imageInfo.patientName = image.data.string('x00100010');
    imageInfo.patientBirthDate = image.data.string('x00100030');
    imageInfo.patientGender = image.data.string('x00100040');
    imageInfo.sID = image.data.string('x00200011');
    // 像素间距
    imageInfo.pixelSpacing = image.data.string('x00280030');
    imageInfo.height = image.data.uint16('x00280010');
    imageInfo.width = image.data.uint16('x00280011');
    imageInfo.height = image.data.uint16('x00280010');
    imageInfo.windowCenter = image.data.string('x00281050');
    imageInfo.windowWidth = image.data.string('x00281051');
    imageInfo.imagePixelSpacing = image.data.string('x00181164') || '';
    imageInfo.rowPixelSpacing = image.rowPixelSpacing;
    // 放射放大系数
    imageInfo.magnification = Number(image.data.string('x00181114'));
    // 放射源到面板的距离
    imageInfo.sourceTOdetector = image.data.string('x00181110');
    // 放射源到病人的距离
    imageInfo.sourceTOpatient = image.data.string('x00181111');
    //this.modalityLUT = cornerstone.metaData.get('modalityLutModule', image.imageId).modalityLUTSequence;
    imageInfo.voiContent = cornerstone.metaData.get('voiLutModule', image.imageId);
    // 斜率截距
    imageInfo.rescaleIntercept = Number(image.data.string('x00281052'));
    imageInfo.rescaleSlope = Number(image.data.string('x00281053'));
    return imageInfo;
}

//上一张
function last(imgId) {
    if (imgId && stateData.element != imgId) {
        return;
    }
    var data = cornerstoneTools.getToolState(stateData.element, "stack").data[0];
    var index = data.currentImageIdIndex;
    if (index == 0) {
        return;
    }
    else {
        index -= 1;
    }
    var imgId = data.imageIds[index];
    data.currentImageIdIndex = index;
    cornerstone.loadAndCacheImage(imgId).then(function (image) {
        cornerstone.enable(stateData.element);
        cornerstone.displayImage(stateData.element, image);
        renderTagText(stateData.element, image)
    });
    setSliderValue(stateData.element.id)
}

//进度条更新
function setAllSliderValue() {
    //获取所有已经加载的图片区映射关系
    if (stateData.showMapping) {
        stateData.showMapping.forEach((value, key) => {
            setSliderValue(key);
        });
    }
}

//标签文本更新
function setAllTagsValue() {
    if (stateData.showMapping) {
        stateData.showMapping.forEach((value, key) => {
            var element = document.getElementById(key)
            var image = cornerstone.getImage(element);
            //TODO 缺少获取图片对象信息
            renderTagText(element, image)
        });
    }
}

//重置画布
function resetRenderCanvase() {
    var element = stateData.element;
    const enabledElement = cornerstone.getEnabledElement(element);

    enabledElement.renderingTools.colormapId = undefined;
    enabledElement.renderingTools.colorLut = undefined;

    const renderCanvas = enabledElement.renderingTools.renderCanvas;
    const canvasContext = renderCanvas.getContext('2d');

    // NOTE - we need to fill the render canvas with white pixels since we
    // control the luminance using the alpha channel to improve rendering performance.
    canvasContext.fillStyle = 'white';
    canvasContext.fillRect(0, 0, renderCanvas.width, renderCanvas.height);
    const renderCanvasData = canvasContext.getImageData(0, 0, renderCanvas.width, renderCanvas.height);

    enabledElement.renderingTools.renderCanvasContext = canvasContext;
    enabledElement.renderingTools.renderCanvasData = renderCanvasData;
    cornerstone.updateImage(stateData.element);
}

//重置按钮状态
function resetBtnState(id) {
    if ($("#" + id).hasClass("selected")) {
        $("#" + id).removeClass("btn-primary")
        $("#" + id).removeClass("selected")
        $("#" + id).addClass("btn-default")
    }
}

function disableFunctions(currentFun) {
    functionNames.forEach(function (fname) {
        resetBtnState(fname)
        if (currentFun != fname && (notNeedDisableFunctions.includes(fname) || displayFunctions.includes(fname))) {
            return;
        }
        cornerstoneTools.setToolDisabled(fname, { mouseButtonMask: 1 })
    })
}

//辅助工具
const toolFunction = ["ScaleOverlay", "OrientationMarkers"]
const wheelFunction = ["ZoomMouseWheel"]

//撤销所有改动
function resetTool() {
    //反转色
    //invert(null, $("#invert"), true)
    //changColor(0, $("#changeColor"), true)
    functionNames.forEach(function (fname) {
        if (notNeedDisableFunctions.includes(fname)) {
            cornerstoneTools.clearToolState(stateData.element, fname);
        }
    })
    cornerstone.reset(stateData.element);
    cornerstone.updateImage(stateData.element);
}
//反转颜色
function invert(flag, btn, reset) {
    //btn btn-primary
    var isSelected = $(btn).hasClass('selected');
    if (isSelected || reset) {
        $(btn).removeClass("btn-primary")
        $(btn).removeClass("selected")
        $(btn).addClass("btn-default")
    }
    else {
        $(btn).removeClass("btn-default")
        $(btn).addClass("btn-primary")
        $(btn).addClass("selected")
    }
    //反转颜色
    var viewport = {
        invert: !isSelected ? true : false
    }
    cornerstone.setViewport(stateData.element, viewport);
}

//彩色
function changColor(flag, btn, reset) {
    var element = stateData.element;
    //btn btn-primary
    var isSelected = $(btn).hasClass('selected');
    if (isSelected || reset) {
        $(btn).removeClass("btn-primary")
        $(btn).removeClass("selected")
        $(btn).addClass("btn-default")
    }
    else {
        $(btn).removeClass("btn-default")
        $(btn).addClass("btn-primary")
        $(btn).addClass("selected")
    }
    resetRenderCanvase();
    const b = cornerstone.getEnabledElement(element)
    const v = cornerstone.getDefaultViewport(b.canvas, b.image)
    var vp = cornerstone.getViewport(element);
    vp.colormap = !isSelected ? "hsv" : undefined;
    if (!flag) {
        cornerstone.setViewport(element, v)
    }
    else {
        cornerstone.setViewport(element, vp)
    }
}

//重置cornerstone
function reset() {
    cornerstone.reset(stateData.element);
}

function initConerstone(element) {
    // 注册并挂载cornerstone及其cornerstoneTools，固定操作
    cornerstoneTools.external.cornerstone = cornerstone;
    cornerstoneTools.external.cornerstoneMath = cornerstoneMath;
    cornerstoneTools.external.Hammer = Hammer;
    cornerstoneWADOImageLoader.external.dicomParser = dicomParser;
    cornerstoneWADOImageLoader.external.cornerstone = cornerstone;
    // imageId就是cornerstone要求的.dcm图片地址,例如：var imageId = "wadouri:http://127.0.0.1:6699/ctdcm1.dcm";
    //var imageId = "wadouri:./1.dcm";
    // 初始化cornerstoneTools工具
    cornerstoneTools.init();
    //// 获取要用于加载图片的div区域
    //element = document.getElementById('dicomImage');
    ////激活获取到的用于图片加载的区域
    cornerstone.enable(element);
    // 从cornerstoneTools库中获取窗宽,窗高工具
    const WwwcTool = cornerstoneTools.WwwcTool;
    //添加获取到的窗宽,窗高工具
    cornerstoneTools.addTool(WwwcTool);

    //放大
    const MagnifyTool = cornerstoneTools.MagnifyTool;
    cornerstoneTools.addTool(MagnifyTool)

    //平移
    const PanTool = cornerstoneTools.PanTool;
    cornerstoneTools.addTool(PanTool)

    const ZoomTool = cornerstoneTools.ZoomTool;
    cornerstoneTools.addTool(ZoomTool, {
        // Optional configuration
        configuration: {
            invert: false,
            preventZoomOutsideImage: false,
            minScale: .1,
            maxScale: 20.0,
        }
    });

    const ZoomMouseWheelTool = cornerstoneTools.ZoomMouseWheelTool;
    cornerstoneTools.addTool(ZoomMouseWheelTool)

    const WwwcRegionTool = cornerstoneTools.WwwcRegionTool;
    cornerstoneTools.addTool(WwwcRegionTool)

    const ScaleOverlayTool = cornerstoneTools.ScaleOverlayTool;
    cornerstoneTools.addTool(ScaleOverlayTool)

    //旋转
    const RotateTool = cornerstoneTools.RotateTool;
    cornerstoneTools.addTool(RotateTool)

    const OrientationMarkersTool = cornerstoneTools.OrientationMarkersTool;
    cornerstoneTools.addTool(OrientationMarkersTool)

    const AngleTool = cornerstoneTools.AngleTool;
    cornerstoneTools.addTool(AngleTool)

    const ArrowAnnotateTool = cornerstoneTools.ArrowAnnotateTool;
    cornerstoneTools.addTool(ArrowAnnotateTool)

    const BidirectionalTool = cornerstoneTools.BidirectionalTool;
    cornerstoneTools.addTool(BidirectionalTool)

    const CobbAngleTool = cornerstoneTools.CobbAngleTool;
    cornerstoneTools.addTool(CobbAngleTool)

    const EllipticalRoiTool = cornerstoneTools.EllipticalRoiTool;
    cornerstoneTools.addTool(EllipticalRoiTool)

    const FreehandRoiTool = cornerstoneTools.FreehandRoiTool;
    cornerstoneTools.addTool(FreehandRoiTool)

    const LengthTool = cornerstoneTools.LengthTool;
    cornerstoneTools.addTool(LengthTool)

    const ProbeTool = cornerstoneTools.ProbeTool;
    cornerstoneTools.addTool(ProbeTool)

    const RectangleRoiTool = cornerstoneTools.RectangleRoiTool;
    cornerstoneTools.addTool(RectangleRoiTool)

    const TextMarkerTool = cornerstoneTools.TextMarkerTool
    // set up the markers configuration
    const configuration = {
        markers: ['F5', 'F4', 'F3', 'F2', 'F1'],
        current: 'F5',
        ascending: true,
        loop: true,
    }
    cornerstoneTools.addTool(TextMarkerTool, { configuration })

    const StackScrollTool = cornerstoneTools.StackScrollTool
    cornerstoneTools.addTool(StackScrollTool)

    const StackScrollMouseWheelTool = cornerstoneTools.StackScrollMouseWheelTool
    cornerstoneTools.addTool(StackScrollMouseWheelTool)
    cornerstoneTools.setToolActive('StackScrollMouseWheel', {})

}

function initConerstoneAndData() {
    var series = stateData.dicomInfo.seriesList[stateData.imgIndex].instanceList
    const scheme = 'wadouri'
    const baseUrl = ''
    const imageIds = series.map(seriesImage => `${scheme}:${baseUrl}${seriesImage.imageid}`)

    //define the stack
    const stack = {
        currentImageIdIndex: 0,
        imageIds: imageIds
    }

    cornerstone.enable(stateData.element);

    // load images and set the stack
    cornerstone.loadImage(imageIds[0]).then((image) => {
        initSlider(stateData.element);
        cornerstone.displayImage(stateData.element, image)
        cornerstoneTools.addStackStateManager(stateData.element, ['stack'])
        cornerstoneTools.addToolState(stateData.element, 'stack', stack)
        renderTagText(stateData.element, image)
    })
}

//页面加载完成，执行初始化
$(document).ready(function () {
    createElements(1, 1,true);
    //激活获取到的用于图片加载的区域
    stateData.element = document.getElementById('dicomImage_0_0');
    stateData.showMapping.set('dicomImage_0_0',0);
    //cornerstone.enable(stateData.element);
    initConerstone(stateData.element);
    //初始化数据
    initData();
    //鼠标滚轮事件
    document.addEventListener('mousewheel', function (event) {
        // 处理事件
        setAllSliderValue();
        setAllTagsValue();
    });
    //鼠标移动事件
    document.addEventListener('mousemove', function (event) {
        // 处理事件
        setAllSliderValue();
        setAllTagsValue();
    });
})

//初始化右侧图片列表
function initImgList(data) {
    $("#dicom-list").empty();
    for (var i = 0; i < data.seriesList.length; i++) {
        var className = "series_img";
        if (stateData.imgIndex == i) {
            className += "_active";
        }
        $("#dicom-list").append('<img id="img_' + i + '" onclick="changeIndex(' + i + ')" class="' + className + '" src="' + data.seriesList[i].thumbUrl + '"/>');
        $("#dicom-list").append('<h6 style="color: white; id="h_' + i + '" onclick="changeIndex(' + i + ')" >"'+data.seriesList[i].SeriesDesc+'"</h6>');
    }
}

//修改序列
function changeIndex(i) {
    if (stateData.imgIndex == i && stateData.showMapping.get(stateData.element.id) == i) {
        return;
    }
    $("#img_" + stateData.imgIndex).removeClass("series_img_active");
    $("#img_" + stateData.imgIndex).addClass("series_img")
    $("#img_" + i).removeClass("series_img")
    $("#img_" + i).addClass("series_img_active")
    stateData.imgIndex = i
    initConerstone(stateData.element)
    initConerstoneAndData();
    stateData.showMapping.set(stateData.element.id, i);
}

//获取数据 Handler/Service.ashx  idx: idx, no: localData.no, orgId: localData.orgId, method: "getSeries"
function initData() {
    var idx = GetQueryString("idx");
    var localStorage = window.localStorage;
    var localData = JSON.parse(localStorage.data); 
    var data= JSON.parse(localData.do); 
    console.log("网页接受到数据"+data)
    stateData.dicomInfo = data;
    initImgList(stateData.dicomInfo);
    initConerstoneAndData();
  /*   alert(localData.regid) */
 /*    $.getJSON("http://127.0.0.1:5000/get-data", {
       
    },
    function (data) {
        if ("failed" == data.status) {
            alert("获取数据失败")
        }
        else {
            console.log(data)
            stateData.dicomInfo = data;
            initImgList(stateData.dicomInfo);
            initConerstoneAndData();
        }
     }); */
}






//初始化滚动条
function initSlider(element) {
    var idx = stateData.showMapping.get(element.id);
    var size = stateData.dicomInfo.seriesList[idx].instanceList.length;
    //当前索引
    var index = 0;
    try {
        var data = cornerstoneTools.getToolState(element, "stack").data[0];
        index = data.currentImageIdIndex;
    }
    catch (err) {
        console.log('err',err)
    }
    $("#" + element.id + "-slider").attr("min", 1)
    $("#" + element.id + "-slider").attr("max", size)
    $("#" + element.id + "-slider").val(index + 1)
}

//选中元素
function changeElement(b) {
    //滚动条和上下翻页禁用
    $(".operator").attr("disabled", "true");
    $("#" + b.id + "-btn-next").removeAttr("disabled");
    $("#" + b.id + "-btn-last").removeAttr("disabled");
    $("#" + b.id + "-slider").removeAttr("disabled");
    if (stateData.element == b) {
        $(b).parent().removeClass("dicom-img-box");
        $(b).parent().addClass("dicom-img-box-active");
        return;
    }
    $(b).parent().removeClass("dicom-img-box");
    $(b).parent().addClass("dicom-img-box-active");
    $(stateData.element).parent().removeClass("dicom-img-box-active");
    $(stateData.element).parent().addClass("dicom-img-box");
    stateData.element = b;
}

//获取URL参数
function GetQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]); return null;
}

//设置滑动条值
function setSliderValue(imgId) {
    //获取被选中胶片区域元素
    var element = document.getElementById(imgId)
    var data = cornerstoneTools.getToolState(element, "stack").data[0];
    var index = data.currentImageIdIndex;
    $("#" + imgId + "-slider").val(index+1);
}

function changeSlider(imgId, slider) {
    var sliderValue = $(slider).val();
    var data = cornerstoneTools.getToolState(stateData.element, "stack").data[0];
    index = sliderValue - 1;
    var imgId = data.imageIds[index];
    data.currentImageIdIndex = index;
    cornerstone.loadAndCacheImage(imgId).then(function (image) {
        cornerstone.enable(stateData.element);
        cornerstone.displayImage(stateData.element, image);
        renderTagText(stateData.element,image)
    });
    for (var i = 0; i < 10; i++) {
        if (index + i == data.imageIds.length - 1) {
            break;
        }
        cornerstone.loadImage(data.imageIds[index + i]).then((image) => {
            console.log("loaded ok " + data.imageIds[index + i]);
        })
    }
}

//渲染标签文本
function renderTagText(e, i) {
    var tagsInfo = getDicomInfo(i);
    var element = $(e).parent()[0];
    var boxId = element.id;
    //判断文本是否已经显示
    if (!$("#" + boxId + "_left-top").length) {
        var infoElement =
            '    <div id="' + boxId + '_left-top" class="around-info-left-top"></div>' +
            '    <div id="' + boxId + '_right-top" class="around-info-right-top"></div>' +
            '    <div id="' + boxId + '_left-bottom" class="around-info-left-bottom"></div>' +
            '    <div id="' + boxId + '_right-bottom" class="around-info-right-bottom"></div>';
        $(element).children().first().before(infoElement);
    }
    //左上角
    var leftTop = $("#" + boxId + "_left-top");
    leftTop.empty();
    leftTop.append("<div class='tag-item'>" + tagsInfo.patientId + "</div>");//体检编号
    leftTop.append("<div class='tag-item'>姓名：" + stateData.dicomInfo.patientname + "</div>");//患者姓名
    leftTop.append("<div class='tag-item'>" + tagsInfo.patientBirthDate + " " + (tagsInfo.patientGender == 'F' ? "男":"女") + "</div>");
    leftTop.append("<div class='tag-item'>" + tagsInfo.imageDate + "</div>");
    
    //左下角
    var leftBottom = $("#" + boxId + "_left-bottom");
    leftBottom.empty();
    leftBottom.append("<div class='tag-item'>" + stateData.dicomInfo.hospital +"</div>");
    //右上角
    var rightTop = $("#" + boxId + "_right-top");
    rightTop.empty();
    rightTop.append("<div class='tag-item'>序列:" + tagsInfo.seriesNumber + " 图像:" + tagsInfo.imageNum + "</div>");
    //右下角
    var vp = cornerstone.getViewport(e);
    var rightBottom = $("#" + boxId + "_right-bottom");
    rightBottom.empty();
    rightBottom.append("<div class='tag-item'>缩放:" + vp.scale.toFixed(2) + "</div>");
    rightBottom.append("<div class='tag-item'>" + tagsInfo.width + "x" + tagsInfo.height + "</div>");
    rightBottom.append("<div class='tag-item'>窗宽:" + tagsInfo.windowWidth + " 窗位:" + tagsInfo.windowCenter + "</div>");
}

//创建视图元素
function createElements(rowCount, columnCount,isInit) {
    var container = document.getElementById('dicom-continer');
    if (!isInit) {
        clearChildren(container);
    }
    for (var i = 0; i < rowCount; i++) {
        //生成行
        var rowDom = document.createElement('div')
        rowDom.setAttribute("class", "flex-row");
        for (var j = 0; j < columnCount; j++) {
            var columnDom = document.createElement('div');
            columnDom.setAttribute("class", "dicom-img-box");
            columnDom.setAttribute("id", 'dicom-img-box_' + i + '_' + j)
            var imgId = 'dicomImage_' + i + '_' + j;
            $(columnDom).append('<div class="dicom-img" id="' + imgId + '" onclick="changeElement(this)"></div>'
            +'<div class="slider-container">'
                + '<i class="iconfont icon-fangxiangjiantou-shang icon-shang operator" id="' + imgId +'-last_btn" onclick="last(' + imgId +')"></i>'
                + '<input type="range" class="lcmf-range lcmf-range-date operator" value="0" id="' + imgId +'-slider" onchange="changeSlider(\'' + imgId + '\',this)" />'
                + '<i class="iconfont icon-fangxiangjiantou-xia icon-xia operator" id="' + imgId +'-next_btn" onclick="next(' + imgId +')"></i>'
                + '</div>');
            rowDom.appendChild(columnDom);
        }
        container.appendChild(rowDom);
    }
}

//清理元素
function clearChildren(element) {
    if (element && element.children.length > 0) {
        for (var i = 0; i < element.children.length; i++) {
            element.removeChild(element.children[i]);
            i--;
        }
    }
}

//创建视图入口
function doCreate() {
    let rowCount = parseInt(document.getElementById('row-count').value);
    let columnCount = parseInt(document.getElementById('column-count').value);
    if (stateData.rowCount == rowCount && stateData.columnCount == columnCount) {
        return;
    }
    createElements(rowCount, columnCount, false);

    stateData.rowCount = rowCount;
    stateData.columnCount = columnCount;
    stateData.imgIndex = 0;
    stateData.element = null;
    stateData.showMapping = new Map()
}