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import { HttpClient } from '@angular/common/http';
import { ChangeDetectionStrategy, Component, Input, OnChanges } from '@angular/core';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
import { ContentPageletView } from 'ish-core/models/content-view/content-view.model';
import { CMSComponent } from 'ish-shared/cms/models/cms-component/cms-component.model';
@Component({
selector: 'ish-cms-product-list-rest',
templateUrl: './cms-product-list-rest.component.html',
changeDetection: ChangeDetectionStrategy.OnPush,
})
export class CMSProductListRestComponent implements CMSComponent, OnChanges {
@Input({ required: true }) pagelet: ContentPageletView;
productSKUs$: Observable<string[]>;
constructor(private httpClient: HttpClient) {}
ngOnChanges() {
if (this.pagelet.hasParam('ProductsRestEndpoint')) {
this.productSKUs$ = this.getProductSKUs$();
}
}
private getProductSKUs$(): Observable<string[]> {
return this.httpClient.get<unknown>(this.pagelet.stringParam('ProductsRestEndpoint')).pipe(
map(data => {
let skus: string[] = [];
// if the REST response is not already an Array of SKUs
// a given mapper function can be applied to the REST 'data' to map the data to an Array of SKUs
skus = this.pagelet.hasParam('ProductsRestResponseMapper')
? Function('data', `"use strict"; return ${this.pagelet.stringParam('ProductsRestResponseMapper')}`)(data)
: data;
// limit the number of rendered products
if (this.pagelet.hasParam('MaxNumberOfProducts')) {
skus = skus.splice(0, this.pagelet.numberParam('MaxNumberOfProducts'));
}
return skus;
})
);
}
}
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