var example = null;
var pers = null;
var layer = null;
var form = null;
var proId = localStorage.getItem("proIdWages");
$(function () {
    layui.use(['layer', 'form'], function () {
        layer = layui.layer;
        form = layui.form;
        pers = checkPermission();
        init();
    });
});

function init() {
    example =
        $('#dt-table').DataTable({
            "searching": false,
            "processing": true, //加载数据时显示进度状态
            "serverSide" : true,
            "pagingType": "full_numbers", //首页|尾页
            "language": {
                "url": contentPath + "/js/plugin/datatables/Chinese.lang"
            },
            "ajax": {
                "url": ctxPath + "/analysisWages/getProListFile",
                "type": "POST",
                "data": function (d) {
                    d.proId = proId;
                },
                "error": function (xhr, textStatus, errorThrown) {
                    var msg = xhr.responseText;
                    console.log(msg);
                    var response = JSON.parse(msg);
                    var code = response.code;
                    var message = response.message;
                    if (code == 400) {
                        layer.msg(message);
                    } else if (code == 401) {
                        localStorage.removeItem("token");
                        layer.msg("token过期，请先登录", {shift: -1, time: 1000}, function () {
                            location.href = ctxPath + '/login.html';
                        });
                    } else if (code == 403) {
                        console.log("未授权:" + message);
                        layer.msg('未授权');
                    } else if (code == 500) {
                        console.log('系统错误：' + message);
                    }
                }
            },
            "lengthMenu": [ [10, 20, 50], [10, 20, 50] ], // 设置每页显示数据量选项
            "drawCallback": function() {
                // alert( '表格重绘了' );
                var thisDataTable = $('#dt-table').DataTable();
                $(".pagination").append("<li>" +
                    "<a class='paginate_button'  style='padding:4px;' href='#'  tabindex='0'>到 <input style='margin:0px;width:40px;' id='changePage'> 页</a>" +
                    "<a class='paginate_button' style='margin-bottom:1px' href='#'  tabindex='0' id='dataTable-btn'>确认</a></li>");
                //点击按钮跳转指定页数
                $('#dataTable-btn').click(function (e) {
                    if ($("#changePage").val() && $("#changePage").val() > 0) {
                        var redirectpage = $("#changePage").val() - 1;
                    } else {
                        var redirectpage = 0;
                    }
                    thisDataTable.page(redirectpage).draw( 'page' );
                });
                //敲击回车键跳转指定页数
                $("#changePage").keypress(function (e) {
                    if(event.keyCode==13){
                        if ($("#changePage").val() && $("#changePage").val() > 0) {
                            var redirectpage = $("#changePage").val() - 1;
                        } else {
                            var redirectpage = 0;
                        }
                        thisDataTable.page(redirectpage).draw( 'page' );
                    }
                });
            },
            "dom": "<'dt-toolbar'r>t<'dt-toolbar-footer'<'col-sm-4 col-xs-4 hidden-xs'i><'col-xs-8 col-sm-8' p v>><'dt-table-length'l>",
            "columns": [
                {
                    width: '40px',
                    "orderable": false,
                    data: function (row, type, set, meta) {
                        var c = meta.settings._iDisplayStart + meta.row + 1;
                        return c;
                    }
                },
                {"data": "typeName","orderable": false,'width': '120px'},
                {"data": "fileName","orderable": false,'width': '180px'},
                {"data": "uploadName","orderable": false,'width': '100px'},
                {"data": "uploadTime","orderable": false,'width': '100px',},
                {
                    "data": "",
                    'width': '100px',
                    "defaultContent": "",
                    "orderable": false,
                    "render": function (data, type, row) {
                        var fileName = row['fileName'];
                        var filePath = row['filePath'];
                        var html = '';
                        html += buttonDownload(fileName,filePath, "", pers);
                        return html;
                    }
                },

            ],
            "order": []  //在栏目列上显示排序功能
        });
}

// 下载按钮
function buttonDownload(fileName,filePath, permission, pers) {
    if (permission != "") {
        if ($.inArray(permission, pers) < 0) {
            return "";
        }
    }
    var btn = $("<button class='layui-btn layui-btn-xs' title='下载' onclick='download(\""+fileName+"\",\""+filePath+"\" )'><i class='layui-icon'>&#xe601;</i></button>");
    return btn.prop("outerHTML");
}

function download(fileName, filePath) {
    // 检查参数是否有效
    if (!filePath) {
        layer.msg('文件路径无效');
        return;
    }
    
    // 创建a标签进行下载
    var a = document.createElement('a');
    a.href = ctxPath + "/" + filePath;
    if (fileName) {
        a.download = fileName;
    }
    a.style.display = 'none'; // 隐藏a标签
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
}