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

@Component({
  selector: "app-sub-annotations-line-chart",
  templateUrl: "./sub-annotations-line-chart.component.html",
  styleUrls: ["./sub-annotations-line-chart.component.scss"],
})
export class SubAnnotationsLineChartComponent 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 = "噪声变化趋势";

  // echart配置项
  initEchart(style) {
    // 获取模拟数据
    let leqDatas = this.makeData(1000, 50.8);
    let lmaxDatas = this.makeData(1000, 53.8);
    let simulateData = [leqDatas.datas, lmaxDatas.datas];
    let markPoints = [leqDatas.markPoints, lmaxDatas.markPoints];
    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"],
      markPoints: markPoints,
    };
    this.echartOption = this.chartOptionService.getOptionAnnotationLineChart(params);
  }

  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
    );
  }

  private makeData(num, level) {
    let datas = [];
    let markPoints = [];
    let a, b;
    let dateTime = new Date("2020-10-01 00:00:00");
    for (let i = 0; i < num; i++) {
      if (i % 200 === 0) {
        a = 2 * Math.random();
      }
      if (i % 300 === 0) {
        b = 2 * Math.random();
      }
      dateTime = addMilliseconds(dateTime, 1000);
      let value = (
        level +
        (3 * i) / 200 +
        2 * Math.sin(i / 50) +
        a +
        b +
        Math.random()
      ).toFixed(2);
      datas.push([format(dateTime, "yyyy-MM-dd HH:mm:ss"), value]);
      if (i % 200 == 0) {
        markPoints.push({
          name: "event" + (i + 1),
          coord: [format(dateTime, "yyyy-MM-dd HH:mm:ss"), value],
        });
      }
    }
    return {
      datas: datas,
      markPoints: markPoints,
    };
  }
}