import { Component, OnInit, ViewChild, Inject } from '@angular/core';
import { HttpClient } from '@angular/common/http'
import { MatTreeFlatDataSource, MatTreeFlattener } from '@angular/material/tree';
import { MatPaginator } from '@angular/material/paginator';
import { FlatTreeControl } from '@angular/cdk/tree';
import { FormControl } from '@angular/forms';
import { Router,ActivatedRoute } from '@angular/router'
import { PageEvent } from '@angular/material/paginator';
import { MatDialogRef, MatDialog, MAT_DIALOG_DATA } from '@angular/material/dialog';
import { MatSnackBar, MatSnackBarConfig } from '@angular/material/snack-bar';
import { TreeService } from '../../http-interceptors/tree.service'
import { MatTableDataSource } from '@angular/material/table';
import { DomSanitizer } from '@angular/platform-browser';
import {PlanOpen} from '../plan-audit/plan-audit.component'
import {ViewUnitDetailsPlanComponent} from '../../key-unit/view-unit-details-plan/view-unit-details-plan.component'



export interface Food {
  name:string;
  value: string;
}
@Component({
  selector: 'app-plan-pass',
  templateUrl: './plan-pass.component.html',
  styleUrls: ['./plan-pass.component.scss']
})
export class PlanPassComponent implements OnInit {

  constructor(private http:HttpClient,private router:Router,private route:ActivatedRoute,private tree: TreeService,public dialog: MatDialog,
    public snackBar: MatSnackBar,private sanitizer: DomSanitizer) { }

  ngOnInit(): void {
    this.type =  this.route.snapshot.queryParams.type
    this.getCompanyData()
    this.getPlanData()
  }

  type:any //审核按钮是否出现
  displayedColumns: string[] = ['filename','addtime','operation']; //表头
  compantData:any = {name:'',organizationName: '', buildingTypes:[{name:''}], address:''}; //当前单位信息
  organizationName:any = ''; //组织机构名称
  planData:any; //审核预案信息

  //获取当前单位信息
  getCompanyData () {
    this.http.get(`/api/Plans/${this.route.snapshot.queryParams.id}`).subscribe((data:any)=>{
      data && data.company? this.compantData = data.company : null
    })
  }

  //获取当前单位审核预案的信息
  getPlanData () {
    let header = { 
      CompanyName: this.route.snapshot.queryParams.companyName || '',
      AuditStatus: this.route.snapshot.queryParams.auditStatus || '',
      PageSize: '100',
    }
    let api
    this.route.snapshot.queryParams.planType == 1? api = '/api/PlanAudits' : api = '/api/PublicPlans' //1=预案审核 2=公开预案
    this.http.get(api,{params:header}).subscribe((data:any)=>{
      data.items.forEach(element => {
        if (element.id===this.route.snapshot.queryParams.auditPlanId) {
          this.planData = element
          this.organizationName = element.committerOrganizationName
          this.handleData()
          return 
        }
      });
    })
  }

  planType:any; //展示预案类型
  allFile:any = []; //类型=0时所有文件
  thirdPartyURL:any; //类型=3时网址

  handleData () {
    this.planType = this.planData.planMode
    let data = this.planData
    if (this.planData.planMode==0) { //预案planMode=0时, 下载文件
      data.attachmentUrls.forEach(item => {
        this.http.get(`/api/ObjectMetadata/PlanPlatform/${item}`).subscribe((data:any)=>{
          data.isLoading = false
          this.allFile.push(data)
          this.allFile = new MatTableDataSource<any>(this.allFile) })
      });
    } else if (this.planData.planMode==1) { //预案planMode=1时, 解析文档

    } else if (this.planData.planMode==2) { //预案planMode=2时, 跳查看页面组件
      sessionStorage.setItem("buildingTypeId", this.compantData.buildingTypes.length? this.compantData.buildingTypes[0].id: undefined);
      sessionStorage.setItem("companyId",this.route.snapshot.queryParams.id);
      sessionStorage.setItem("planId",this.route.snapshot.queryParams.auditPlanId);
      sessionStorage.setItem("editable",'0');
    } else if (this.planData.planMode==3) { //预案planMode=3时, 第三方网址
      this.thirdPartyURL = this.sanitizer.bypassSecurityTrustResourceUrl(data.url)
    }

  }

  //预案审核
  toExamine () {
    let data = this.route.snapshot.queryParams.auditPlanId
    const dialogRef = this.dialog.open(PlanOpen,{data});
  }

  suffix:string; //文件名后缀
  //下载
  download (e) {
    e.isLoading = true
    let file = e
    let fileSize = file.fileLength //下载文件的总大小
    let shardSize = 10 * 1024 * 1024 //文件大小是否大于10MB
    this.suffix = this.compantData.name + '.' + (e.objectName.substring(e.objectName.lastIndexOf(".")+1,e.objectName.length));

    if (file && fileSize<=shardSize) { //<=10MB时直接下载
      this.http.get(`/api/Objects/PlanPlatform/${file.objectName}`,{responseType: 'blob'},).subscribe(data=>{
        let url = window.URL.createObjectURL(new Blob([data])); //createObjectURL创建一个下载Blob的url地址
        let link = document.createElement("a");
        link.style.display = "none";
        link.href = url;
        link.setAttribute("download", e.fileName?e.fileName : this.suffix);
        document.body.appendChild(link);
        link.click();
        e.isLoading = false
      })
    } else if (file && fileSize>shardSize) { //>10MB时分块下载
      this.blockingDownload(e) //分段下载
    }

  }

  //分段下载并合并
  async blockingDownload (e) {
    let file = e
    let fileSize = file.fileLength //下载文件的总大小
    let shardSize = 3 * 1024 * 1024 //3MB一个分片
    let allSlice = Math.ceil(fileSize / shardSize) //总文件/3MB===共分多少段
    let allFile:any = [] //所有的file分段

    for (let i=0;i<allSlice;i++) {
      let start = i * shardSize //每次下载文件开始位置
      let end = Math.min(fileSize, start + shardSize-1); //每次下载文件结束为止

      let result =  await new Promise ((result,reject)=>{
        this.http.get(`/api/Objects/PlanPlatform/${file.objectName}`,{headers:{'range':`bytes= ${start}-${end}`},responseType:'blob'}).subscribe(data=>{
          result(data) }) 
      })
      allFile.push(result)
      e.progress = Number((i/allSlice).toFixed(2))*100 + '%'

      if (allFile.length === allSlice) { //合并文件输出给浏览器
        let url = window.URL.createObjectURL(new Blob(allFile)); //createObjectURL创建一个下载Blob的url地址
        let link = document.createElement("a");
        link.style.display = "none";
        link.href = url;
        link.setAttribute("download", e.fileName?e.fileName : this.suffix);
        document.body.appendChild(link);
        link.click();
        e.isLoading = false
        e.progress = ''
      }

    } //for循环

  }



}