import { Component, OnInit } from "@angular/core";
import { fromEvent } from "rxjs";
import { debounceTime } from "rxjs/operators";
import { CommomService } from "src/app/core/services/commom.service";
import { addMilliseconds, format } from "date-fns";
import { ENgxPrintComponent } from 'e-ngx-print';
import { ViewChild } from "@angular/core";
import { ChartOptionService } from 'src/app/core/services/chartServices/chart-option.service';
import { ChartMenuService } from 'src/app/core/services/chartServices/chart-menu.service';

@Component({
  selector: "app-sub-big-data-line-chart",
  templateUrl: "./sub-big-data-line-chart.component.html",
  styleUrls: ["./sub-big-data-line-chart.component.scss"],
})
export class SubBigDataLineChartComponent implements OnInit {

  @ViewChild('print1', {static: false}) print1Component: ENgxPrintComponent;

  constructor(
    private commomService: CommomService,
    private chartOptionService: ChartOptionService,
    private chartMenuService: ChartMenuService,
    ) {}

  ngOnInit() {
    this.initEchart(this.commomService.changeFontSize());
    fromEvent(window, "resize")
      .pipe(debounceTime(200))
      .subscribe(() => {
        let style = this.commomService.changeFontSize();
        this.optionInit.setOption({
          legend: {
            itemWidth: style.fontSize,
            itemHeight: style.fontSize,
          },
          toolbox: {
            itemSize: style.toolboxSize,
          },
          grid: style.interval,
        });
      });
  }
  optionInit;
  onOptionInit(ec) {
    this.optionInit = ec;
  }

  echartOption;
  // 图名
  chartName = "噪声秒级数据";

  // echart配置项
  initEchart(style) {
    //获取数据
    let simulateData = [
      this.makeData(3000, 51.8),
      this.makeData(3000, 53)
    ];
    style.interval.right = "30";
    // 参数传递
    let params = {
      customGrid:style.interval,
      style: style,
      unit: "dB",
      xAxisName: "",
      yAxisName: "noise level(dB)",
      yNameGap: 30,
      datas: simulateData,
      seriesNames: ["Leq", "Lmax"]
    };
    this.echartOption = this.chartOptionService.getOptionBigDataLineChart(params);
    console.log(this.echartOption)
  }

  closePanel(event) {
    event.fromElement.setAttribute('style','display:none')
  }

  downloadImage(imageType: string, fileName: string) {
    this.chartMenuService.downloadEchartImage(this.optionInit, fileName, imageType);
  }

  printComplete() {
  }

  customPrint() {
    this.chartMenuService.customPrint(this.optionInit, this.print1Component);
  }

  fullScreen(event) {
    this.chartMenuService.fullScreen(event.srcElement.parentNode.parentNode.parentNode.parentNode);
  }

  // 模拟数据
  private makeData(num, level) {
    let datas = [];
    let a, b
    let dateTime = new Date("2020-10-01 00:00:00");
    for (let i = 0; i < num; i++) {
      if (i % 30 === 0) {
        a = 2 * Math.random();
      }
      if (i % 30 === 0) {
        b = 2 * Math.random();
      }
      dateTime = addMilliseconds(dateTime, 1000);

      datas.push([
        format(dateTime, "yyyy-MM-dd HH:mm:ss"),
        (level + 2 * Math.sin(i / 50) + a + b + Math.random()).toFixed(2),
      ]);
    }
    return datas;
  }
}