import { delay } from 'rxjs/operators';
import { AfterViewInit, Component, Input, OnDestroy } from '@angular/core';
import { NbThemeService } from '@nebular/theme';

declare const echarts: any;

@Component({
  selector: 'ngx-solar',
  styleUrls: ['./solar.component.scss'],
  template: `
    <nb-card size="tiny" class="solar-card">
      <nb-card-header>Solar Energy Consumption</nb-card-header>
      <nb-card-body>
        <div echarts [options]="option" class="echart">
        </div>
        <div class="info">
          <div class="h4 value">6.421 kWh</div>
          <div class="details subtitle-2"><span>out of</span> 8.421 kWh</div>
        </div>
      </nb-card-body>
    </nb-card>
  `,
})
export class SolarComponent implements AfterViewInit, OnDestroy {

  private value = 0;

  @Input('chartValue')
  set chartValue(value: number) {
    this.value = value;

    if (this.option.series) {
      this.option.series[0].data[0].value = value;
      this.option.series[0].data[1].value = 100 - value;
      this.option.series[1].data[0].value = value;
    }
  }

  option: any = {};
  themeSubscription: any;

  constructor(private theme: NbThemeService) {
  }

  ngAfterViewInit() {
    this.themeSubscription = this.theme.getJsTheme().pipe(delay(1)).subscribe(config => {

      const solarTheme: any = config.variables.solar;

      this.option = Object.assign({}, {
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)',
        },
        series: [
          {
            name: ' ',
            clockWise: true,
            hoverAnimation: false,
            type: 'pie',
            center: ['45%', '50%'],
            radius: solarTheme.radius,
            data: [
              {
                value: this.value,
                name: ' ',
                label: {
                  normal: {
                    position: 'center',
                    formatter: '{d}%',
                    textStyle: {
                      fontSize: '22',
                      fontFamily: config.variables.fontSecondary,
                      fontWeight: '600',
                      color: config.variables.fgHeading,
                    },
                  },
                },
                tooltip: {
                  show: false,
                },
                itemStyle: {
                  normal: {
                    color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                      {
                        offset: 0,
                        color: solarTheme.gradientLeft,
                      },
                      {
                        offset: 1,
                        color: solarTheme.gradientRight,
                      },
                    ]),
                    shadowColor: solarTheme.shadowColor,
                    shadowBlur: 0,
                    shadowOffsetX: 0,
                    shadowOffsetY: 3,
                  },
                },
                hoverAnimation: false,
              },
              {
                value: 100 - this.value,
                name: ' ',
                tooltip: {
                  show: false,
                },
                label: {
                  normal: {
                    position: 'inner',
                  },
                },
                itemStyle: {
                  normal: {
                    color: solarTheme.secondSeriesFill,
                  },
                },
              },
            ],
          },
          {
            name: ' ',
            clockWise: true,
            hoverAnimation: false,
            type: 'pie',
            center: ['45%', '50%'],
            radius: solarTheme.radius,
            data: [
              {
                value: this.value,
                name: ' ',
                label: {
                  normal: {
                    position: 'inner',
                    show: false,
                  },
                },
                tooltip: {
                  show: false,
                },
                itemStyle: {
                  normal: {
                    color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                      {
                        offset: 0,
                        color: solarTheme.gradientLeft,
                      },
                      {
                        offset: 1,
                        color: solarTheme.gradientRight,
                      },
                    ]),
                    shadowColor: solarTheme.shadowColor,
                    shadowBlur: 7,
                  },
                },
                hoverAnimation: false,
              },
              {
                value: 28,
                name: ' ',
                tooltip: {
                  show: false,
                },
                label: {
                  normal: {
                    position: 'inner',
                  },
                },
                itemStyle: {
                  normal: {
                    color: 'none',
                  },
                },
              },
            ],
          },
        ],
      });
    });
  }

  ngOnDestroy() {
    this.themeSubscription.unsubscribe();
  }
}
