import { LightningElement, wire, api, track } from "lwc";
import { ShowToastEvent } from "lightning/platformShowToastEvent";
import init from "@salesforce/apex/LexConsumableAccountController.init";
import changeFiscalYearView from "@salesforce/apex/LexConsumableAccountController.changeFiscalYearView";
import changelistView from "@salesforce/apex/LexConsumableAccountController.changelistView";
import accountInit from "@salesforce/apex/LexConsumableAccountInfoController.init";
//table css
import { loadStyle } from "lightning/platformResourceLoader";
import WrappedHeaderTable from "@salesforce/resourceUrl/lexdatatable";

const columns = [
  {
    label: "客户名",
    fieldName: "NameUrl",
    hideDefaultActions: true,
    wrapText: true,
    initialWidth: 200,
    sortable: true,
    type: "url",
    typeAttributes: {
      label: {
        fieldName: "Name"
      },
      target: "_blank"
    }
  },
  // {
  //     label: "省",
  //     fieldName: "StateMasterUrl",
  //     hideDefaultActions: true,
  //     wrapText: true,
  //     sortable: true,
  //     type: "url",
  //     typeAttributes: {
  //         label: {
  //             fieldName: "StateMasterName",
  //         },
  //         target: "_blank",
  //     },
  // },
  {
    label: "省",
    fieldName: "StateMasterName",
    hideDefaultActions: true,
    wrapText: true,
    sortable: true
  },
  {
    label: "销售本部医院",
    fieldName: "Salesdepartment_HP__c",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  },
  {
    label: "创建日期",
    fieldName: "CreatedDate",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true,
    type: "date",
    typeAttributes: {
      timeZone: "Asia/Shanghai",
      day: "numeric",
      month: "numeric",
      year: "numeric"
    }
  },
  {
    label: "有效/无效",
    fieldName: "Is_Active__c",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  },
  // {
  //     label: "客户记录类型",
  //     fieldName: "RecordTypeName",
  //     hideDefaultActions: true,
  //     sortable: true,
  //     wrapText: true,
  //     initialWidth: 130,
  // },
  {
    label: "政府等级",
    fieldName: "Grade__c",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  },
  // {
  //     label: "OCSM分类(医院)",
  //     fieldName: "OCM_Category__c",
  //     hideDefaultActions: true,
  //     sortable: true,
  //     wrapText: true,
  // },
  // {
  //     label: "市",
  //     fieldName: "CityMasterNameUrl",
  //     hideDefaultActions: true,
  //     sortable: true,
  //     wrapText: true,
  //     type: "url",
  //     typeAttributes: {
  //         label: {
  //             fieldName: "CityMasterName",
  //         },
  //         target: "_blank",
  //     },
  // },
  {
    label: "市",
    fieldName: "CityMasterName",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  },
  {
    label: "县/区",
    fieldName: "Town__c",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  },
  {
    label: "客户电话",
    fieldName: "Phone",
    hideDefaultActions: true,
    sortable: true,
    wrapText: true
  }
];

const topColumns = [
  {
    label: "客户名",
    hideDefaultActions: true,
    fieldName: "accountName",
    wrapText: true,
    type: "customShowAccountUrl",
    typeAttributes: {
      accountName: { fieldName: "accountName" },
      accountUrl: { fieldName: "accountUrl" },
      isDisable: { fieldName: "isDisable" }
    }
  },
  // {
  //     label: "市",
  //     fieldName: "CityMasterName",
  //     hideDefaultActions: true,
  //     wrapText: true,
  //     type: "customShowAccountUrl",
  //     typeAttributes: {
  //         accountName: { fieldName: "CityMasterName" },
  //         accountUrl: { fieldName: "CityMasterNameUrl" },
  //         isDisable: { fieldName: "isDisable" },
  //     },
  // },
  {
    label: "市",
    fieldName: "CityMasterName",
    hideDefaultActions: true,
    wrapText: true
  },
  {
    label: "县/区",
    fieldName: "Town__c",
    hideDefaultActions: true,
    wrapText: true
  },
  {
    label: "销量占比",
    fieldName: "proportion",
    hideDefaultActions: true,
    wrapText: true,
    initialWidth: 100,
    cellAttributes: { alignment: "right" }
  },
  {
    label: "操作",
    fieldName: "Town__c",
    type: "weeklyReport",
    initialWidth: 150,
    typeAttributes: {
      recordId: { fieldName: "Id" },
      hospitalName: { fieldName: "Name" },
      isShowButton: { fieldName: "isShowButton" }
    },
    hideDefaultActions: true
  }
];
export default class LexConsumableAccount extends LightningElement {
  columns = columns;
  topColumns = topColumns;
  @track isShowSpinner = false;
  @track pageRecords = [];
  @track accountId = "";
  @track agencyProType = "";
  @track agencyProTypestr = "";
  @track listViewOptions = [
    {
      label: "01. 医院_Hospital",
      value: "01. 医院_Hospital"
    },
    // {
    //     label: "61. 医院_Hospital草案中的医院",
    //     value: "61. 医院_Hospital草案中的医院",
    // },
    // {
    //     label: "62. 医院_Hospital申请中的医院",
    //     value: "62. 医院_Hospital申请中的医院",
    // },
    {
      label: "63. 医院_Hospital上周创建的医院",
      value: "63. 医院_Hospital上周创建的医院"
    }
  ];
  @track viewOption = "01. 医院_Hospital";

  @track isShowAccountInfo = false;
  @track topAccountData = [];

  //前端排序
  defaultSortDirection = "asc";
  sortDirection = "asc";
  sortedBy;

  //分页start
  @track sortBy = "";
  @track pageSize = 10;
  error;
  records;
  currentPageToken = 0;
  nextPageToken = this.pageSize;
  @track totalRecords = 0;
  @track loader = false;
  @track pageNumber = 1;
  @track paginationVisibility = false;
  @track totalPages = 1;
  pageSizeOptions = [10, 25, 50, 100];
  @track recordStart = 0;
  @track recordEnd = 0;
  //end

  @track AccId = "";
  @track printUrl = "";
  @track accountDataInfo = {
    name: "",
    ownerName: "",
    site: "",
    isActive: "",
    aliasName2: "",
    banOnUseReason: "",
    grade: "",
    attributeType: "",
    oCMCategory: "",
    specialityType: "",
    stateMasterName: "",
    phone: "",
    cityMasterName: "",
    phoneCall: "",
    town: "",
    fax: "",
    street: "",
    postalCode: "",
    address: "",
    parentName: ""
  };

  stylesLoaded = false;

  //财年
  @track fiscalYearOptions = [
    { label: "本财年", value: "thisYear" },
    { label: "上一财年", value: "lastYear" },
    { label: "上一财年+本财年", value: "allYear" }
  ];
  @track fiscalYearOption = "thisYear";
  @track topInfo = [];

  renderedCallback() {
    if (!this.stylesLoaded) {
      Promise.all([loadStyle(this, WrappedHeaderTable)])
        .then(() => {
          console.log("Custom styles loaded");
          this.stylesLoaded = true;
        })
        .catch((error) => {
          console.error("Error loading custom styles");
        });
    }
  }

  //获取链接参数
  getQueryString(name) {
    console.log("getQueryString name " + name);
    let reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    let r = window.location.search.substr(1).match(reg);
    if (r != null) {
      return decodeURIComponent(r[2]);
    }
    return null;
  }

  connectedCallback() {
    this.isShowSpinner = true;
    this.AccId = this.getQueryString("AccId");
    this.AccId = this.AccId == null ? "" : this.AccId;
    if (this.AccId != "") {
      console.log("this.AccId = " + this.AccId);
      accountInit({
        accId: this.AccId
      })
        .then((r) => {
          r = JSON.parse(JSON.stringify(r));
          console.log("r = " + JSON.stringify(r));
          if (r.status == "Success") {
            console.log("r.entity.obj = " + JSON.stringify(r.entity.obj));
            this.accountDataInfo.name = r.entity.obj.Name;
            this.accountDataInfo.ownerName =
              r.entity.obj.Owner == null ? "" : r.entity.obj.Owner.Name;
            this.accountDataInfo.site = r.entity.obj.site;
            this.accountDataInfo.isActive = r.entity.obj.Is_Active__c;
            this.accountDataInfo.aliasName2 = r.entity.obj.Alias_Name2__c;
            this.accountDataInfo.banOnUseReason =
              r.entity.obj.Ban_On_Use_Reason__c;
            this.accountDataInfo.grade = r.entity.obj.Grade__c;
            this.accountDataInfo.attributeType = r.entity.obj.Attribute_Type__c;
            this.accountDataInfo.oCMCategory = r.entity.obj.OCM_Category__c;
            this.accountDataInfo.specialityType =
              r.entity.obj.Speciality_Type__c;
            this.accountDataInfo.stateMasterName =
              r.entity.obj.State_Master__r == null
                ? ""
                : r.entity.obj.State_Master__r.Name;
            this.accountDataInfo.phone = r.entity.obj.Phone;
            this.accountDataInfo.cityMasterName =
              r.entity.obj.City_Master__r == null
                ? ""
                : r.entity.obj.City_Master__r.Name;
            this.accountDataInfo.phoneCall = r.entity.obj.PhoneCall__c;
            this.accountDataInfo.town = r.entity.obj.Town__c;
            this.accountDataInfo.fax = r.entity.obj.Fax;
            this.accountDataInfo.street = r.entity.obj.Street__c;
            this.accountDataInfo.postalCode = r.entity.obj.Postal_Code__c;
            this.accountDataInfo.address = r.entity.obj.Address__c;
            this.accountDataInfo.parentName =
              r.entity.obj.Parent == null ? "" : r.entity.obj.Parent.Name;
            console.log(
              "this.accountDataInfo = " + JSON.stringify(this.accountDataInfo)
            );
            this.printUrl =
              "/lexconsumableaccountinfoprint?AccId=" + this.AccId;
            this.isShowAccountInfo = true;
            this.isShowSpinner = false;
          } else {
            console.log("r = " + JSON.stringify(r));
            this.showMyToast("Error", r.msg, "Error");
          }
        })
        .catch((error) => {
          console.log("error = " + JSON.stringify(error));
          this.showMyToast("Error", "初始化失败", "Error");
        });
    } else {
      init({
        pageSizeLWC: this.pageSize,
        pageTokenLWC: this.currentPageToken,
        fiscalYear: this.fiscalYearOption
      })
        .then((r) => {
          r = JSON.parse(JSON.stringify(r));
          console.log("r = " + JSON.stringify(r));
          if (r.status == "Success") {
            //分页
            this.nextPageToken = r.entity.paginatedAccounts.nextPageToken;
            this.totalRecords = r.entity.paginatedAccounts.totalRecords;
            this.recordStart = r.entity.paginatedAccounts.recordStart;
            this.recordEnd = r.entity.paginatedAccounts.recordEnd;
            this.totalPages = Math.ceil(
              r.entity.paginatedAccounts.totalRecords / this.pageSize
            );
            console.log("this.totalPages = " + this.totalPages);
            this.paginationVisibility = this.totalPages > 1 ? true : false;

            this.pageRecords = r.entity.pageRecords;
            this.accountId = r.entity.accountId;
            this.agencyProType = r.entity.agencyProType;
            this.agencyProTypestr = r.entity.agencyProTypestr;
            console.log("this.agencyProTypestr = " + this.agencyProTypestr);
            for (var i in this.pageRecords) {
              this.pageRecords[i]["Is_Active__c"] = this.pageRecords[
                i
              ].Is_Active__c.replace("効", "效");
              this.pageRecords[i]["NameUrl"] =
                "/s/lexconsumableaccount?AccId=" + this.pageRecords[i].Id;
              this.pageRecords[i]["StateMasterName"] =
                this.pageRecords[i].State_Master__r.Name;
              this.pageRecords[i]["StateMasterUrl"] =
                "/" + this.pageRecords[i].State_Master__c;
              this.pageRecords[i]["CityMasterName"] =
                this.pageRecords[i].City_Master__r.Name;
              this.pageRecords[i]["CityMasterNameUrl"] =
                "/" + this.pageRecords[i].City_Master__c;
              this.pageRecords[i]["RecordTypeName"] =
                this.pageRecords[i].RecordType.Name;
            }
            console.log(
              "this.listViewOptions = " + JSON.stringify(this.listViewOptions)
            );

            console.log(
              "r.entity.topInfo = " + JSON.stringify(r.entity.topInfo)
            );
            //top10客户
            this.topInfo = r.entity.topInfo;
            console.log("this.topInfo = " + JSON.stringify(this.topInfo));
            this.topAccountData = this.topInfo.acList;
            console.log(
              "this.topAccountData = " + JSON.stringify(this.topAccountData)
            );
            console.log(
              "9/3 = " +
                this.keepTwoDecimalStr(this.amend(9, 3, "/").toFixed(2))
            );
            let total = 100;
            try {
              for (var i in this.topAccountData) {
                this.topAccountData[i]["accountName"] =
                  this.topAccountData[i].Name;
                this.topAccountData[i]["accountUrl"] =
                  "/s/lexconsumableaccount?AccId=" + this.topAccountData[i].Id;
                this.topAccountData[i]["isDisable"] = false;
                this.topAccountData[i]["StateMasterName"] =
                  this.topAccountData[i].State_Master__r.Name;
                this.topAccountData[i]["StateMasterUrl"] =
                  "/" + this.topAccountData[i].State_Master__c;
                this.topAccountData[i]["CityMasterName"] =
                  this.topAccountData[i].City_Master__r.Name;
                this.topAccountData[i]["CityMasterNameUrl"] =
                  "/" + this.topAccountData[i].City_Master__c;
                this.topAccountData[i]["RecordTypeName"] =
                  this.topAccountData[i].RecordType.Name;
                this.topAccountData[i]["isShowButton"] = true;
                let number = this.keepTwoDecimalStr(
                  (
                    this.amend(
                      this.topInfo.deList[i],
                      this.topInfo.saleAmount,
                      "/"
                    ) * 100
                  ).toFixed(2)
                );
                console.log(
                  "this.amend = " +
                    this.amend(
                      this.topInfo.deList[i],
                      this.topInfo.saleAmount,
                      "/"
                    ) *
                      100
                );
                total -= number;
                this.topAccountData[i]["proportion"] = number + "%";
              }

              console.log(
                "this.topAccountData = " + JSON.stringify(this.topAccountData)
              );

              //其他
              console.log(
                "(total.toFixed(2) > 0.00 ? total.toFixed(2) : 0.00) = " +
                  (total.toFixed(2) > 0.0 ? total.toFixed(2) : "0.00")
              );
              if (total != 100) {
                this.topAccountData.push({
                  accountName: "...",
                  accountUrl: "/s/lexconsumableaccount",
                  isDisable: true,
                  proportion:
                    (total.toFixed(2) > 0.0 ? total.toFixed(2) : "0.00") + "%",
                  CityMasterName: "...",
                  CityMasterNameUrl: "/lexconsumableaccount",
                  Town__c: "...",
                  isShowButton: false
                });
              } else {
                let title = "";
                for (var key in this.fiscalYearOptions) {
                  if (
                    this.fiscalYearOption == this.fiscalYearOptions[key].value
                  )
                    title = this.fiscalYearOptions[key].label;
                }
                this.showMyToast(title, "无数据", "Error");
              }
              this.isShowSpinner = false;
            } catch (error) {
              console.log("error = " + error.message);
            }
          } else {
            console.log("r = " + JSON.stringify(r));
            this.showMyToast("Error", r.msg, "Error");
          }
        })
        .catch((error) => {
          console.log("error = " + JSON.stringify(error));
          this.showMyToast("Error", "销量前十客户初始化失败", "Error");
        });
    }
  }

  amend(num1, num2, symbol) {
    console.log("num1 = " + num1);
    console.log("num2 = " + num2);
    console.log("symbol = " + symbol);
    var str1 = num1.toString(),
      str2 = num2.toString(),
      result,
      str1Length,
      str2Length;
    //解决整数没有小数点方法
    try {
      str1Length = str1.split(".")[1].length;
    } catch (error) {
      str1Length = 0;
    }
    try {
      str2Length = str2.split(".")[1].length;
    } catch (error) {
      str2Length = 0;
    }
    var step = Math.pow(10, Math.max(str1Length, str2Length));
    console.log(step);
    switch (symbol) {
      case "+":
        result = (num1 * step + num2 * step) / step;
        break;
      case "-":
        result = (num1 * step - num2 * step) / step;
        break;
      case "*":
        result = (num1 * step * (num2 * step)) / step / step;
        break;
      case "/":
        result = (num1 * step) / (num2 * step);
        break;
      default:
        break;
    }
    return result;
  }

  keepTwoDecimalStr(num) {
    const result = Number(num.toString().match(/^\d+(?:\.\d{0,2})?/));
    let s = result.toString();
    let rs = s.indexOf(".");
    if (rs < 0) {
      rs = s.length;
      s += ".";
    }
    while (s.length <= rs + 2) {
      s += "0";
    }
    return s;
  }

  dataChange(event) {
    let fieldName = event.target.getAttribute("data-field");
    let value = event.detail.value;
    console.log("fieldName = " + fieldName + " value = " + value);
    switch (fieldName) {
      case "viewOption":
        this.viewOption = value;
        this.changelistView();
        break;
      case "fiscalYearOption":
        this.fiscalYearOption = value;
        this.changeFiscalYear();
        break;
    }
  }

  changeFiscalYear() {
    this.isShowSpinner = true;
    changeFiscalYearView({
      fiscalYear: this.fiscalYearOption
    })
      .then((r) => {
        r = JSON.parse(JSON.stringify(r));
        console.log("r = " + JSON.stringify(r));
        if (r.status == "Success") {
          //top10客户
          this.topInfo = r.entity.topInfo;
          console.log("this.topInfo = " + JSON.stringify(this.topInfo));
          this.topAccountData = this.topInfo.acList;
          console.log(
            "this.topAccountData = " + JSON.stringify(this.topAccountData)
          );
          let total = 100;
          for (var i in this.topAccountData) {
            console.log("i = " + i);
            this.topAccountData[i]["accountName"] = this.topAccountData[i].Name;
            this.topAccountData[i]["accountUrl"] =
              "/s/lexconsumableaccount?AccId=" + this.topAccountData[i].Id;
            this.topAccountData[i]["isDisable"] = false;
            this.topAccountData[i]["StateMasterName"] =
              this.topAccountData[i].State_Master__r.Name;
            this.topAccountData[i]["StateMasterUrl"] =
              "/" + this.topAccountData[i].State_Master__c;
            this.topAccountData[i]["CityMasterName"] =
              this.topAccountData[i].City_Master__r.Name;
            this.topAccountData[i]["CityMasterNameUrl"] =
              "/" + this.topAccountData[i].City_Master__c;
            this.topAccountData[i]["RecordTypeName"] =
              this.topAccountData[i].RecordType.Name;
            this.topAccountData[i]["isShowButton"] = true;
            let number = this.keepTwoDecimalStr(
              (
                this.amend(
                  this.topInfo.deList[i],
                  this.topInfo.saleAmount,
                  "/"
                ) * 100
              ).toFixed(2)
            );
            total -= number;
            this.topAccountData[i]["proportion"] = number + "%";
          }

          // //其他
          if (total != 100) {
            this.topAccountData.push({
              accountName: "...",
              accountUrl: "/s/lexconsumableaccount",
              isDisable: true,
              proportion:
                (total.toFixed(2) > 0.0 ? total.toFixed(2) : "0.00") + "%",
              CityMasterName: "...",
              CityMasterNameUrl: "/lexconsumableaccount",
              Town__c: "...",
              isShowButton: false
            });
          } else {
            let title = "";
            for (var key in this.fiscalYearOptions) {
              if (this.fiscalYearOption == this.fiscalYearOptions[key].value)
                title = this.fiscalYearOptions[key].label;
            }
            this.showMyToast(title, "无数据", "Error");
          }

          this.isShowSpinner = false;
        } else {
          console.log("r = " + JSON.stringify(r));
          this.showMyToast("Error", r.msg, "Error");
        }
      })
      .catch((error) => {
        console.log("error = " + JSON.stringify(error));
        this.showMyToast("Error", "销量前十客户初始化失败", "Error");
      });
  }

  changelistView() {
    this.isShowSpinner = true;
    changelistView({
      filterNameLwc: this.viewOption,
      accountIdLwc: this.accountId,
      agencyProTypeLwc: this.agencyProType,
      pageSizeLWC: this.pageSize,
      pageTokenLWC: this.currentPageToken,
      sortFieldLWC: this.sortBy,
      sortOrderLWC: this.sortDirection
    })
      .then((r) => {
        r = JSON.parse(JSON.stringify(r));
        console.log("r = " + JSON.stringify(r));
        if (r.status == "Success") {
          //分页
          this.nextPageToken = r.entity.paginatedAccounts.nextPageToken;
          this.totalRecords = r.entity.paginatedAccounts.totalRecords;
          this.recordStart = r.entity.paginatedAccounts.recordStart;
          this.recordEnd = r.entity.paginatedAccounts.recordEnd;
          this.totalPages = Math.ceil(
            r.entity.paginatedAccounts.totalRecords / this.pageSize
          );
          console.log("this.totalPages = " + this.totalPages);
          this.paginationVisibility = this.totalPages > 1 ? true : false;

          this.pageRecords = r.entity.pageRecords;
          console.log("this.pageRecords = " + JSON.stringify(this.pageRecords));
          for (var i in this.pageRecords) {
            this.pageRecords[i]["Is_Active__c"] = this.pageRecords[
              i
            ].Is_Active__c.replace("効", "效");
            this.pageRecords[i]["NameUrl"] =
              "/s/lexconsumableaccount?AccId=" + this.pageRecords[i].Id;
            this.pageRecords[i]["StateMasterName"] =
              this.pageRecords[i].State_Master__r.Name;
            this.pageRecords[i]["StateMasterUrl"] =
              "/" + this.pageRecords[i].State_Master__c;
            this.pageRecords[i]["CityMasterName"] =
              this.pageRecords[i].City_Master__r.Name;
            this.pageRecords[i]["CityMasterNameUrl"] =
              "/" + this.pageRecords[i].City_Master__c;
            this.pageRecords[i]["RecordTypeName"] =
              this.pageRecords[i].RecordType.Name;
          }
          this.isShowSpinner = false;
        } else {
          this.showMyToast("Error", r.msg, "Error");
        }
      })
      .catch((error) => {
        console.log("error = " + JSON.stringify(error.message));
      });
  }

  showMyToast(title, message, variant) {
    this.isShowSpinner = false;
    console.log("show custom message");
    var iconName = "";
    var content = "";
    if (variant.toLowerCase() == "success") {
      iconName = "utility:check";
    } else {
      iconName = "utility:error";
    }
    if (message != "") {
      content =
        "<h2><strong>" + title + "<strong/></h2><h5>" + message + "</h5>";
    } else {
      content = "<h2><strong>" + title + "<strong/></h2>";
    }
    this.template
      .querySelector("c-common-toast")
      .showToast(variant, content, iconName, 10000);
  }

  sortByMethod(field, reverse, primer) {
    const key = primer
      ? function (x) {
          return primer(x[field]);
        }
      : function (x) {
          return x[field];
        };

    return function (a, b) {
      a = key(a);
      b = key(b);
      return reverse * ((a > b) - (b > a));
    };
  }

  onHandleSort(event) {
    console.log("event.detail.fieldName = " + event.detail.fieldName);
    this.sortBy = event.detail.fieldName;
    switch (this.sortBy) {
      case "NameUrl":
        this.sortBy = "Name";
        break;
      case "StateMasterName":
        this.sortBy = "State_Master__r.Name";
        break;
      case "RecordTypeName":
        this.sortBy = "RecordType.Name";
        break;
      case "CityMasterName":
        this.sortBy = "City_Master__r.Name";
        break;
    }
    this.sortDirection = event.detail.sortDirection;
    this.currentPageToken = 0;
    console.log("this.sortBy = " + this.sortBy);
    console.log("this.sortDirection = " + this.sortDirection);
    this.changelistView();
    const { fieldName: sortedBy, sortDirection } = event.detail;
    this.sortByMethod(sortedBy, sortDirection === "asc" ? 1 : -1);
    this.sortDirection = sortDirection;
    this.sortedBy = sortedBy;
  }

  handlePrevious() {
    this.currentPageToken =
      Number(this.currentPageToken) - Number(this.pageSize);
    this.changelistView();
  }

  handleNext() {
    this.currentPageToken =
      Number(this.currentPageToken) + Number(this.pageSize);
    this.changelistView();
  }
  handleFirst() {
    this.currentPageToken = 0;
    this.changelistView();
  }

  handleLast() {
    this.currentPageToken =
      this.totalPages > 1 ? (this.totalPages - 1) * this.pageSize : 0;
    this.changelistView();
  }

  handlePageschange(event) {
    console.log(event.detail);
    this.pageSize = event.detail;
    this.currentPageToken = 0;
    this.changelistView();
  }
  get previousButtonDisabled() {
    return this.currentPageToken === 0;
  }

  get nextButtonDisabled() {
    return this.nextPageToken === undefined;
  }
}