import { Component, OnInit } from '@angular/core';
import { SearchEmployee } from '../../_models/Employee/searchEmployee';
import { LeaveYear } from '../../_models/Leave/leaveYear';
import { Leave } from '../../_models/Leave/leave';
import { LeaveService } from '../../_services/leave/leave.service';
import { HRMNotificationService } from '../../app.notification.service';
import { loadingPanelService } from '../../hrm-loding panel/loding.panel.service';
import { ApiService } from '../../app.api.service';
import { EnumStatus } from '../../_models/enums';
import { saveAs } from 'file-saver';
import { ReportServices } from '../../_services/reports/report.service';
import { GlobalfunctionExtension } from 'src/app/_models/globalFunctions';
import { Router } from '@angular/router';
import { EmployeeServices } from 'src/app/_services/employee/employee.service';
import { AuthorizedPerson } from 'src/app/adhoc-feature/authorized-persons/authorizedPerson';

@Component({
    selector: 'app-emp-leave-balance',
    templateUrl: './emp-leave-balance.component.html',
    styleUrls: ['./emp-leave-balance.component.scss']
})
export class EmpLeaveBalanceComponent implements OnInit {
    selectedEmployee: SearchEmployee;
    leaveYearList: LeaveYear[] = [];
    leaveList: Leave[] = [];
    leaveYearId: number;
    PDFTitle = null;
    showPopUp = false;
    data: Array<Object>;
    src: any;
    base64Data: any;
    leaveId: number;
    fromDate: Date = GlobalfunctionExtension.getFirstDateofYear(new Date());
    toDate: Date = GlobalfunctionExtension.getLastDateOfYear(new Date());

    authPersons: AuthorizedPerson[];
    personID: number;
    reportRoute: any;
    reportID: number;

    constructor(public leaveService: LeaveService,
        public notificationService: HRMNotificationService,
        public reportService: ReportServices,
        public loadingPanel: loadingPanelService,
        public apiService: ApiService,
        public router: Router,
        public employeeService: EmployeeServices) {
        this.reportRoute = this.router.url.split('/').pop();
        debugger
        if (this.reportRoute == 'emp-leave-balance') {
            this.apiService.selectedMenuName = 'Employee Leave Balance';
            this.PDFTitle = 'Employee Leave Balance';
            this.reportID = 724;
        }
        else if (this.reportRoute == 'leave-register') {
            this.apiService.selectedMenuName = 'Leave Register Report';
            this.PDFTitle = 'Leave Register Bangla';
            this.reportID = 727;
        }
    }

    ngOnInit(): void {
        this.loadLeaveYear();
        this.loadAuthPersons();
    }

    public GetSelectedEmployee(childData) {
        this.selectedEmployee = childData;
    }

    loadLeaveYear() {
        this.leaveService.getAllLeaveYear().subscribe(
            (resp) => {
                this.leaveYearList = resp;
            },
            (err) => {
                this.notificationService.showError(err.error);
                this.loadingPanel.ShowLoadingPanel = false;
            },
            () => {
                // console.log(this.leaveYearList);
            }
        );
        this.leaveService.getAllLeave(EnumStatus.Active, '', '').subscribe(
            (resp) => {
                this.leaveList = resp;
            },
            (err) => {
                this.notificationService.showError(err.error);
                this.loadingPanel.ShowLoadingPanel = false;
            },
            () => {
                // console.log(this.leaveList);
                /*this.leaveList.forEach(x => {
                    x.code = x.code.toLowerCase() + x.id;
                });*/
            },
        );
    }
    loadAuthPersons() {
        this.employeeService.getAuthorizedPerson().subscribe(
            (resp) => {
                this.authPersons = resp;
                debugger;
            },
            (err) => {
                this.notificationService.showError(err.error);
                this.loadingPanel.ShowLoadingPanel = false;
            }
        );
    }

    preview(reportType: string) {
        // const leave = this.leaveYearList.find(l => l.id === this.leaveYearId);
        // if (leave === null) {
        //     this.notificationService.showError('Please select leave year!');
        //     return;
        // }
        let data;
        if (this.reportID == 724)
            data = {
                reportid: this.reportID,
                itemid: this.leaveId,
                bankId: null,
                empIds: this.selectedEmployee.employeeID.toString(),
                reportType: reportType,
                fromDate: this.fromDate,
                toDate: this.toDate
            };
        else if (this.reportID == 727)
            data = {
                reportid: this.reportID,
                itemid: this.personID,
                empIds: this.selectedEmployee.employeeID.toString(),
                reportType: reportType,
            };

        this.loadingPanel.ShowLoadingPanel = true;
        if (reportType === 'PDF')
            this.showPopUp = true;
        this.reportService.getCommonReportData(data).subscribe(
            (resp: any) => {
                // if (data.reportType === 'PDF') {
                //     this.src = URL.createObjectURL(this.b64toBlob(resp, 'data:application/pdf;base64', 1024));
                //     this.showPopUp = true;
                // } else if (data.reportType === 'EXCEL') {
                //     this.downloadFile(resp);
                // }
                
                if (reportType === 'PDF') {
                    this.src = URL.createObjectURL(this.b64toBlob(resp, 'application/pdf', 1024));
                    var element = <HTMLIFrameElement>(document.getElementById("pdf-viewer-report"));
                    element.src = this.src;
                } else if (reportType === 'EXCEL') {
                    this.downloadFile(resp);
                }
            },
            (err) => {
                console.log(err);
                this.notificationService.showError(err.error);
                this.loadingPanel.ShowLoadingPanel = false;
                this.showPopUp = false;
            },
            () => {

                this.loadingPanel.ShowLoadingPanel = false;
                // this.loadGrid();
            }
        );
    }

    downloadFile(blobContent) {
        const blob = new Blob([this.b64toBlob(blobContent, 'application/data:application/vnd.ms-excel', 1024)], {});
        saveAs(blob, this.PDFTitle + '.xls');
    }

    b64toBlob(b64Data, contentType, sliceSize) {
        const byteCharacters = atob(b64Data);
        const byteArrays = [];

        for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
            const slice = byteCharacters.slice(offset, offset + sliceSize);

            const byteNumbers = new Array(slice.length);
            for (let i = 0; i < slice.length; i++) {
                byteNumbers[i] = slice.charCodeAt(i);
            }

            const byteArray = new Uint8Array(byteNumbers);
            byteArrays.push(byteArray);
        }

        const blob = new Blob(byteArrays, { type: contentType });
        return blob;
    }

    closeForm(): void {
        this.showPopUp = false;
    }
}