(function () {
    let initData = null;
    let grid = null;
    let currentComponent = null;
    let cellHeight = 60;

    // 生成唯一id
    var generateUniqueId = function () {
        const timestamp = Date.now().toString(36);
        const randomNum = Math.random().toString(36).substring(2);
        return timestamp + randomNum;
    };

    /** 初始化 */
    var init = function () {
        const initDataStorage = localStorage.getItem('initData');
        if (!initDataStorage) {
            initData = {
                id: `grid_${generateUniqueId()}`,
                children: [],
                version: '1.0.0',
                width: 1920,
                height: 1080,
            };
        } else {
            initData = JSON.parse(initDataStorage);
            conputedInitData('init');
        }
        console.log(initData, 'initData');

        // 让gridstack知道如何渲染，组件children中的content直接渲染html
        GridStack.renderCB = function (el, w) {
            el.innerHTML = w.content;
        };
        grid = GridStack.init({
            // 一行高度
            cellHeight,
            // 间距
            margin: 0,
            minRow: Math.floor(1080 / 2 / cellHeight),
            maxRow: Math.floor(1080 / 2 / cellHeight),
            acceptWidgets: true,
            float: true,
            removable: '#trash',
            // subGridOpts: subOptions,
            // subGridDynamic: true,
            children: initData.children,
        });
        GridStack.setupDragIn('#components-panel .component-item', undefined, [
            {
                w: 2,
                h: 2,
                type: 'image',
                name: '图片',
                image: '',
                eventsType: 'click',
                eventsAction: '',
                defaultFocus: false,
                leftId: '',
                rightId: '',
                upId: '',
                downId: '',
            },
            {
                w: 2,
                h: 1,
                type: 'text',
                childrenType: '',
                name: '文本',
                background: '#fff',
                fontSize: '14px',
                color: '#333',
                text: '文本',
                fontWeight: 'normal',
                eventsType: 'click',
                eventsAction: '',
                defaultFocus: false,
                leftId: '',
                rightId: '',
                upId: '',
                downId: '',
            },
        ]);
        console.log(grid, 'grid实例');

        // grid.load(initData.children);

        grid.engine.nodes.forEach((item) => {
            handleAddComponent(item);
        });

        grid.on('added', function (_event, itemArray) {
            console.log(itemArray, '这里触发了添加了added事件');
            itemArray.forEach((item) => {
                handleAddComponent(item);
            });
        });

        grid.on('removed', function (_event, itemArray) {
            console.log(itemArray, '这里触发了移除removed事件');
            itemArray.forEach((item) => {
                handleRemoveComponent(item);
            });
        });
    };

    // 处理添加组件之后的操作
    var handleAddComponent = (component) => {
        if (!component.id) {
            component.id = `${component.type}_${generateUniqueId()}`;
        }
        setComponentView(component);
        component.el.addEventListener('click', () => {
            console.log('点击组件', component);
            if (currentComponent && currentComponent.id === component.id) {
                return;
            }
            currentComponent = component;
            // 右侧显示组件属性列表
            if (!$('#props-panel').find('form').is(':visible')) {
                $('#props-panel').find('.wait-box').hide();
                $('#props-panel').find('form').show();
            }
            // 将当前选中组件的属性显示在右侧列表中
            setCurrentComponentProps(currentComponent);
            // 设置上下左右移动组件ID
            setMoveComponentId(currentComponent);
        });
    };

    // 设置上下左右移动组件ID
    var setMoveComponentId = function (component) {
        const allComponents = grid.save();
        if (allComponents.length <= 1) {
            return;
        }

        setMoveComponentHtml('leftId', component, allComponents);
        setMoveComponentHtml('rightId', component, allComponents);
        setMoveComponentHtml('upId', component, allComponents);
        setMoveComponentHtml('downId', component, allComponents);
    };

    var setMoveComponentHtml = function (idName, component, allComponents) {
        let componentsHtml = [{ value: '', text: '请选择' }];
        allComponents
            .filter((item) => item.id !== component.id)
            .map((item) => {
                componentsHtml.push({ value: item.id, text: `${item.name}(${item.id})`, selected: item.id === component[idName] });
            });
        let el = $(`#${idName}`);
        el.empty();
        componentsHtml.forEach((item) => {
            el.append(
                $('<option>', {
                    value: item.value,
                    text: item.text,
                    selected: item.selected || false,
                })
            );
        });
    };

    var handleRemoveComponent = (component) => {
        if (currentComponent && currentComponent.id === component.id) {
            currentComponent = null;
            // 右侧显示请选择组件
            if (!$('#props-panel').find('wait-box').is(':visible')) {
                $('#props-panel').find('.wait-box').show();
                $('#props-panel').find('form').hide();
            }
        }
    };

    //将当前选中组件的属性显示在右侧列表中
    var setCurrentComponentProps = function (component) {
        const form = $('#props-panel').find('form');
        if (component.hasOwnProperty('childrenType')) {
            form.find('#childrenType').val(component.childrenType);
            form.find('#childrenType').parent().show();
        } else {
            form.find('#childrenType').parent().hide();
        }

        form.find('#name').val(component.name);

        if (component.hasOwnProperty('image')) {
            form.find('#image').val(component.image);
            form.find('#image').parent().show();
        } else {
            form.find('#image').parent().hide();
        }

        if (component.hasOwnProperty('background')) {
            form.find('#background').val(component.background);
            form.find('#background').parent().show();
        } else {
            form.find('#background').parent().hide();
        }

        if (component.type === 'text') {
            form.find('#text').val(component.text);
            form.find('#fontSize').val(component.fontSize);
            form.find('#color').val(component.color);
            form.find('#fontWeight').val(component.fontWeight);
            form.find('#text').parent().show();
            form.find('#fontSize').parent().show();
            form.find('#color').parent().show();
            form.find('#fontWeight').parent().show();
        } else {
            form.find('#text').parent().hide();
            form.find('#fontSize').parent().hide();
            form.find('#color').parent().hide();
            form.find('#fontWeight').parent().hide();
        }

        form.find('#eventsType').val(component.eventsType);
        form.find('#eventsAction').val(component.eventsAction);
        form.find('#defaultFocus').val(component.defaultFocus);
        form.find('#leftId').val(component.leftId);
        form.find('#rightId').val(component.rightId);
        form.find('#upId').val(component.upId);
        form.find('#downId').val(component.downId);
    };

    // 定义组件设置配置策略
    const componentStrategies = {
        background: function (el, value) {
            el.find('.grid-stack-item-content').css('background', value);
        },
        image: function (el, value) {
            el.find('.grid-stack-item-content').css('background', `url(${value}) no-repeat center center`).css('background-size', 'cover');
        },
        fontSize: function (el, value) {
            el.find('span').css('font-size', value + 'px');
        },
        color: function (el, value) {
            el.find('span').css('color', value);
        },
        text: function (el, value) {
            el.find('span').text(value);
        },
        fontWeight: function (el, value) {
            el.find('span').css('font-weight', value);
        },
    };

    // 设置当前传递组件的视图展示
    var setComponentView = function (component, fields = null) {
        const el = $(component.el);

        // 确定要处理的属性
        const propsToHandle = fields || Object.keys(componentStrategies);

        // 遍历并执行对应的策略
        propsToHandle.forEach((prop) => {
            if (componentStrategies[prop] && component[prop] !== undefined) {
                componentStrategies[prop](el, component[prop]);
            }
        });
    };

    // 定义映射关系：元素ID -> 事件类型 -> 组件属性
    const elementMappings = {
        childrenType: { event: 'blur', property: 'childrenType' },
        background: { event: 'blur', property: 'background' },
        image: { event: 'change', property: 'image' },
        fontSize: { event: 'blur', property: 'fontSize' },
        color: { event: 'blur', property: 'color' },
        text: { event: 'blur', property: 'text' },
        fontWeight: { event: 'blur', property: 'fontWeight' },
        eventsType: { event: 'blur', property: 'eventsType' },
        eventsAction: { event: 'blur', property: 'eventsAction' },
        defaultFocus: { event: 'blur', property: 'defaultFocus' },
        leftId: { event: 'change', property: 'leftId' },
        rightId: { event: 'change', property: 'rightId' },
        upId: { event: 'change', property: 'upId' },
        downId: { event: 'change', property: 'downId' },
    };

    // 统一绑定函数
    var bindComponentEvents = function () {
        Object.keys(elementMappings).forEach((elementId) => {
            const mapping = elementMappings[elementId];
            const $element = $('#' + elementId);

            if ($element.length) {
                // 组件名称添加失去焦点事件或者change事件
                $element.off(mapping.event).on(mapping.event, function () {
                    const value = $(this).val();
                    currentComponent[mapping.property] = value;
                    setComponentView(currentComponent, [mapping.property]);
                });
            }
        });
    };

    // 保存的时候计算x,y,w,h
    var conputedInitData = function (type) {
        if (type === 'save') {
            let initDataCopy = JSON.parse(JSON.stringify(initData));
            initDataCopy.children.forEach((item) => {
                item.xCopy = item.x;
                item.x = item.x * (1920 / 12);
                item.yCopy = item.y;
                item.y = item.y * cellHeight * 2;

                item.wCopy = item.w;
                item.w = item.w * (1920 / 12);
                if (!item.hasOwnProperty('h')) {
                    item.h = 1;
                }
                item.hCopy = item.h;
                item.h = item.h * cellHeight * 2;
            });
            console.log(initDataCopy);
            return initDataCopy;
        }
        if (type === 'init') {
            initData.children.forEach((item) => {
                item.x = item.xCopy;
                item.y = item.yCopy;
                item.w = item.wCopy;
                item.h = item.hCopy;
            });
        }
    };

    $('.save-container').click(function () {
        // grid.addWidget({ w: 2, content: 'item 1' });
        // console.log(grid.save());
        // console.log(grid);
        initData.children = grid.save();
        console.log(initData);
        localStorage.setItem('initData', JSON.stringify(conputedInitData('save')));
    });

    /** 执行方法 */
    $(function () {
        init();
        // 调用绑定
        bindComponentEvents();
    });
})();