import { Component, ViewChild, OnInit } from '@angular/core';

import { jqxChartComponent } from 'jqwidgets-scripts/jqwidgets-ts/angular_jqxchart';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html'
})

export class AppComponent implements OnInit {
    @ViewChild('myChart') myChart: jqxChartComponent;

    chartInstance;

    ngOnInit(): void {
        this.chartInstance = this.myChart;
    }

	getWidth() : any {
		if (document.body.offsetWidth < 850) {
			return '90%';
		}
		
		return 850;
	}
	
    source: any =
    {
        datatype: 'tab',
        datafields: [
            { name: 'Year' },
            { name: 'HPI' },
            { name: 'BuildCost' },
            { name: 'Population' },
            { name: 'Rate' }
        ],
        url: '../assets/homeprices.txt'
    };

    dataAdapter: any = new jqx.dataAdapter(this.source, { async: false, autoBind: true, loadError: (xhr: any, status: any, error: any) => { alert('Error loading "' + this.source.url + '" : ' + error); } });

    padding: any = { left: 5, top: 5, right: 5, bottom: 5 };

    titlePadding: any = { left: 0, top: 0, right: 0, bottom: 5 };

    xAxis: any =
    {
        dataField: 'Year',
        unitInterval: 10,
        maxValue: 2010,
        valuesOnTicks: true,
        labels: { autoRotate: true },
        bands: this.bands()
    };

    seriesGroups: any =
    [
        {
            polar: true,
            radius: 160,
            type: 'spline',
            enableSeriesToggle: false,
            valueAxis:
            {
                labels: {
                    formatSettings: { decimalPlaces: 0 },
                    autoRotate: true
                },
                bands:
                [
                    { minValue: 50, maxValue: 130, color: '#00FF00', opacity: 0.2, dashStyle: '2,2', lineWidth: 1 },
                    { minValue: 131, maxValue: 160, color: '#FCD537', opacity: 0.2, dashStyle: '2,2', lineWidth: 1 },
                    { minValue: 161, maxValue: 200, color: '#FF0000', opacity: 0.2, dashStyle: '2,2', lineWidth: 1 }
                ]
            },
            series: [
                { dataField: 'HPI', displayText: 'Real Home Price Index', opacity: 0.9, lineWidth: 3 },
                { dataField: 'BuildCost', displayText: 'Building Cost Index', opacity: 0.9, lineWidth: 3 }
            ]
        }
    ];

    colorsSchemesList: string[] = ['scheme01', 'scheme02', 'scheme03', 'scheme04', 'scheme05', 'scheme06', 'scheme07', 'scheme08'];
 
    seriesList: string[] = ['splinearea', 'spline', 'column', 'scatter', 'stackedcolumn', 'stackedsplinearea', 'stackedspline'];

    sliderStartAngle(event: any): void {
        let value = event.args.value;
        this.chartInstance.seriesGroups()[0].startAngle = value;
        this.chartInstance.seriesGroups()[0].endAngle = value + 360;
        this.chartInstance.update();
    }

    sliderRadius(event: any): void {
        let value = event.args.value;
        this.chartInstance.seriesGroups()[0].radius = value;
        this.chartInstance.update();
    }

    dropDownListColor(event: any): void {
        let value = event.args.item.value;
        this.chartInstance.colorScheme(value);
    }

    dropDownListSeries(event: any): void {
        let value = event.args.item.value;
        this.chartInstance.seriesGroups()[0].type = value;
        this.chartInstance.update();
    }

    bands() {
        let recessions =
            [
                { from: 1969.91, to: 1970.83 },
                { from: 1973.83, to: 1975.25 },
                { from: 1980, to: 1980.58 },
                { from: 1981.58, to: 1982.83 },
                { from: 1990.58, to: 1991.25 },
                { from: 2001.25, to: 2001.83 },
                { from: 2007.91, to: 2009.5 }
            ];

        let bands = [];

        for (let i = 0; i < recessions.length; i++) {
            bands.push({ minValue: recessions[i].from, maxValue: recessions[i].to, fillColor: 'red', opacity: 0.2 });
        }

        return bands;
    }
}