examSystem-Anxin/src/app/student/student-index/student-index.component.ts

/*
 * @Descripttion: 
 * @version: 
 * @Author: sueRimn
 * @Date: 2020-12-20 15:01:30
 * @LastEditors: sueRimn
 * @LastEditTime: 2020-12-22 10:08:19
 */
import { Component, OnInit, ViewChild, Inject,Input  } from '@angular/core';
import {HttpClient} from '@angular/common/http'
import { MatDialogRef, MatDialog, MAT_DIALOG_DATA } from '@angular/material/dialog';
import { MatPaginator } from '@angular/material/paginator';
import { MatTableDataSource } from '@angular/material/table';
import { PageEvent } from '@angular/material/paginator';
import { MatSnackBar, MatSnackBarConfig } from '@angular/material/snack-bar';
import {FormControl} from '@angular/forms';
import { Router,ActivatedRoute } from '@angular/router';
import { MatTreeFlatDataSource, MatTreeFlattener } from '@angular/material/tree';
import { FlatTreeControl } from '@angular/cdk/tree';
import { TreeService } from '../../http-interceptors/tree.service'

@Component({
  selector: 'app-student-index',
  templateUrl: './student-index.component.html',
  styleUrls: ['./student-index.component.scss']
})
export class StudentIndexComponent implements OnInit {

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

  ngOnInit(): void {
    this.getAlltabledate()
    setInterval(()=>this.getAlltabledate(),60000)
    //this.idtime=setInterval(()=>this.jishi("","2020-12-22 11:03"),1000)
    //console.log(this.idtime)
  }

  idtime

  //分页
  @ViewChild(MatPaginator, {static: true}) 
  pageEvent: PageEvent;
  paginator: MatPaginator;
  length:any; //共多少条数据
  pageSize:any; //每页条数
  pageSizeOptions: number[] = [10] //设置每页条数
  PageNumber:any //第几页
  startTime:[]
  endTime:[]
  tabledataSource//表格数据
  timecha

  //分页事件
  chagePage(e){
    this.PageNumber = e.pageIndex+1
    this.getAlltabledate()
  }

  //获取表格信息
  getAlltabledate(){
    let paramsdata:any = {
      PageNumber: this.PageNumber || '1',
      PageSize:  this.pageSizeOptions[0],
      Sort: null,
      SortType: null,
      Status:1
    }
    this.http.get("/api/Papers",{params:paramsdata}).subscribe((data:any)=>{
      this.tabledataSource=data.items
      this.length=data.totalCount
      console.log(this.tabledataSource)
    })
  }
  //计时器
  jishi(startTime,endTime){
    startTime=new Date
    var nowtime = new Date(startTime),  //获取当前时间
        endtime = new Date(endTime);  //定义结束时间
        var lefttime = endtime.getTime() - nowtime.getTime(),  //距离结束时间的毫秒数
        leftd = Math.floor(lefttime/(1000*60*60*24)),  //计算天数
        lefth = Math.floor(lefttime/(1000*60*60)),  //计算小时数
        leftm = Math.floor(lefttime/(1000*60)%60),  //计算分钟数
        lefts = Math.floor(lefttime/1000%60);  //计算秒数
        this.timecha=lefth+":"+leftm+":"+lefts
        
        if(this.timecha=='0:0:0'){
          this.timecha="已结束"
          clearInterval(this.idtime)
        }
        console.log(this.timecha)
  }

  //参加考试
  takeTest (e) {
    let body = {
      name: e.title,
      paperId: e.id,
    }
    this.http.post('/api/Examinations',body).subscribe((data:any)=>{
      window.open(`/examinationDetails?paperId=${e.id}&examId=${data.id}`)
    })
  }
}