/*
 * @Description: 
 * @version: 
 * @Author: chen jing wu
 * @Date: 2023-12-04 10:55:42
 * @LastEditors: chen jing wu
 * @LastEditTime: 2023-12-08 11:16:26
 */
import { LightningElement, wire,api,track } from 'lwc';
import getFiles from '@salesforce/apex/MassFileDownloaderController.getFiles';
import searchFiles from '@salesforce/apex/MassFileDownloaderController.searchFiles';
const COLUMNS = [
    {
        label: 'Title',
        fieldName: 'Id',
        type: 'url',
        typeAttributes: { 
            label: { fieldName: 'Title' },
            target : '_blank'
        }
    },
    {
        label: 'Type',
        fieldName: 'FileExtension',
        type: 'text'
    },
    {
        label: 'Owner',
        fieldName: 'Description',
        type: 'text'
    },
    {
        label: 'CreatedDate',
        fieldName: 'CreatedDate',
        type: 'date'
    },
    
];



const BASE_DOWNLOAD_PATH = '/sfc/servlet.shepherd/version/download';
export default class MassFileDownloader extends LightningElement {
    value = "";
    offset = 0;
    columns = COLUMNS;
    @track files;
    connectedCallback(){
        getFiles({
            offset:this.offset
        }).then(result=>{
            this.files = result;
            console.log(this.files);
        });
    }
    downloadFiles() {

        let selectedFiles = this.files;

        if(selectedFiles.length === 0) {
            return;
        }

        this.initDownloading(
            this.getDownloadString(selectedFiles)
        );
    }
    setSelect(event){
        var index = event.target.name;
        this.files[index].isSelect = event.target.checked;
    }

    getDownloadString(files) {
        let downloadString = '';
        files.forEach(item => {
            if(item.isSelect){
                downloadString += '/' + item.con.LatestPublishedVersionId
            }
        });
        return downloadString;
    }

    initDownloading(downloadString) {
        if(0 == downloadString.length){
            return;
        }
        // alert(BASE_DOWNLOAD_PATH + downloadString);
        window.open(BASE_DOWNLOAD_PATH + downloadString, '_blank');
    }
    cancel(){
        if(this.offset >= 50){
            this.offset = this.offset - 50;
            searchFiles({
                title: this.value,
                offset: this.offset
            }).then(result=>{
                this.files = result;
            });
        }
    }
    next(){
        this.offset = this.offset + 50;
        searchFiles({
            title: this.value,
            offset: this.offset
        }).then(result=>{
            this.files = result;
        });
    }
    allSelect(event){
        var value = event.target.checked;
        for(var i = 0;i < this.files.length;i++){
            this.files[i].isSelect = value;
        }
        var elements = this.template.querySelectorAll('.options');
        elements.forEach(element=>{
            element.checked = value;
        });
        console.log('123');
        console.log(this.files);
    }
    search(event){
        var element = this.template.querySelector('[data-id="search"]');
        this.value = element.value;
        console.log(element);
        this.offset = 0;
        if(this.value){
            searchFiles({
                title: this.value,
                offset: 0
            }).then(result=>{
                this.files = result;
            });
        }else{
            getFiles({
                offset:this.offset
            }).then(result=>{
                this.files = result;
                console.log(this.files);
            });
        }

    }
}