usage-counts/src/app/analytics/analytics.component.ts

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import {Component, ElementRef, OnInit, ViewChild} from '@angular/core';
import {CountryUsageStat, UsageStat} from '../entities/usage-stat';
import {FormControl, FormGroup} from '@angular/forms';
import {Observable} from 'rxjs';
import {UsageStatsService} from '../services/usage-stats.service';
import {map, startWith} from 'rxjs/operators';
import {countries} from '../services/countries';
import {Title} from '@angular/platform-browser';
@Component({
selector: 'analytics',
templateUrl: 'analytics.component.html',
styleUrls: ['analytics.component.css'],
})
export class AnalyticsComponent implements OnInit{
public countryFb: FormGroup;
public countries: Observable<string[]>;
public country: string;
public loading: boolean = true;
public display: UsageStat | CountryUsageStat;
public showSearch: boolean = false;
@ViewChild("input") input: ElementRef;
constructor(private usageStatsService: UsageStatsService,
private title: Title) {}
ngOnInit() {
this.title.setTitle('OpenAIRE - UsageCounts | Analytics');
this.init();
this.usageStatsService.getAllMetrics().subscribe(stats => {
this.display = stats;
this.loading = false;
}, error => {
this.display = null;
this.loading = false;
});
}
private init() {
this.countryFb= new FormGroup({
country: new FormControl('')
});
this.countries = this.countryFb.get('country').valueChanges
.pipe(
startWith(''),
map(value => this._filter(value))
);
}
public search() {
this.country = this.countryFb.value.country;
this.loading = true;
if(this.country && this.country != '') {
this.usageStatsService.getCountryMetrics(this.country).subscribe(stats => {
this.display = stats;
this.loading = false;
this.init();
}, error => {
this.display = null;
this.loading = false;
});
} else {
this.usageStatsService.getAllMetrics().subscribe(stats => {
this.display = stats;
this.loading = false;
this.init();
},error => {
this.display = null;
this.loading = false;
});
}
}
private _filter(value: string): string[] {
const filterValue = value.toLowerCase();
return countries.map(value => value.name).filter(option => filterValue && option.toLowerCase().includes(filterValue));
}
toggle() {
this.showSearch = !this.showSearch;
if(this.showSearch) {
setTimeout(()=>{ // this will make the execution after the above boolean has changed
this.input.nativeElement.focus();
},0);
}
}
}