import { ModuleWithProviders, NgModule, Optional, SkipSelf } from '@angular/core';

import { PlotlyService } from './plotly.service';

import { PlotlyComponent } from './plotly.component';

@NgModule({

imports: [PlotlyComponent],

providers: [PlotlyService],

exports: [PlotlyComponent],

})

export class PlotlyModule {

constructor(){

if (!this.isValid()) {

const msg = 'Invalid PlotlyJS object. Please check https://github.com/plotly/angular-plotly.js#quick-start'

+ ' to see how to add PlotlyJS to your project.';

throw new Error(msg);

}

}

private isValid(): boolean {

return PlotlyService.plotly !== undefined

&& (typeof PlotlyService.plotly.plot === 'function'

|| typeof PlotlyService.plotly.newPlot === 'function');

}

public static forRoot(plotlyjs: any): ModuleWithProviders<PlotlyModule> {

PlotlyService.setPlotly(plotlyjs);

return {

ngModule: PlotlyModule,

providers: [PlotlyService]

};

}

}