@spartacus/core
Version:
Spartacus - the core framework
78 lines • 12.3 kB
JavaScript
import { Injectable } from '@angular/core';
import { filter, map, pairwise } from 'rxjs/operators';
import { createFrom } from '../../util/create-from';
import { FacetChangedEvent } from './product.events';
import * as i0 from "@angular/core";
import * as i1 from "../../event/event.service";
import * as i2 from "../facade/product-search.service";
export class ProductEventBuilder {
constructor(eventService, productSearchService) {
this.eventService = eventService;
this.productSearchService = productSearchService;
this.register();
}
register() {
this.eventService.register(FacetChangedEvent, this.buildFacetChangedEvent());
}
/**
* To get the changed facet, we need to compare the product search results
* got before and after toggling the facet value. These 2 product searches must
* have the same search queries except one different solr filter term. That means
* these 2 searches must have the same 'freeTextSearch'; and if they are category
* searches, they must have the same root (in the same category or brand).
*/
buildFacetChangedEvent() {
return this.productSearchService.getResults().pipe(pairwise(), filter(([prev, curr]) => this.compareSearchResults(prev, curr)), map(([prev, curr]) => {
const toggled = this.getToggledBreadcrumb(curr.breadcrumbs, prev.breadcrumbs) ||
this.getToggledBreadcrumb(prev.breadcrumbs, curr.breadcrumbs);
if (toggled) {
return createFrom(FacetChangedEvent, {
code: toggled.facetCode,
name: toggled.facetName,
valueCode: toggled.facetValueCode,
valueName: toggled.facetValueName,
selected: curr.breadcrumbs.length > prev.breadcrumbs.length,
});
}
}));
}
/**
* The 2 product searches (before and after facet changed) must have the same
* search queries; and if they are category searches, they also must have the
* same root (in the same category or brand).
*/
compareSearchResults(prev, curr) {
var _a, _b, _c;
if (prev && Object.keys(prev).length !== 0) {
// for text searches, they must have the same freeTextSearch
const sameFreeTextSearch = prev.freeTextSearch !== '' &&
prev.freeTextSearch === curr.freeTextSearch;
// for category searches, they must have the same root
const sameCategoryRoot = ((_a = curr.breadcrumbs[0]) === null || _a === void 0 ? void 0 : _a.facetCode) === 'allCategories' &&
((_b = prev.breadcrumbs[0]) === null || _b === void 0 ? void 0 : _b.facetCode) === ((_c = curr.breadcrumbs[0]) === null || _c === void 0 ? void 0 : _c.facetCode) &&
// same category or brand
prev.breadcrumbs[0].facetValueCode ===
curr.breadcrumbs[0].facetValueCode;
return sameFreeTextSearch || sameCategoryRoot;
}
}
/**
* Get the toggled breadcrumb. The 2 breadcrumb lists got from the 2 search results
* only can have one different solr filter term.
*/
getToggledBreadcrumb(bc1, bc2) {
if (bc1.length - bc2.length === 1) {
return bc1.find((x) => !bc2.find((y) => y.facetCode === x.facetCode &&
y.facetValueCode === x.facetValueCode));
}
}
}
ProductEventBuilder.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: ProductEventBuilder, deps: [{ token: i1.EventService }, { token: i2.ProductSearchService }], target: i0.ɵɵFactoryTarget.Injectable });
ProductEventBuilder.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: ProductEventBuilder, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: ProductEventBuilder, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}], ctorParameters: function () { return [{ type: i1.EventService }, { type: i2.ProductSearchService }]; } });
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These 2 product searches must\n   * have the same search queries except one different solr filter term. That means\n   * these 2 searches must have the same 'freeTextSearch'; and if they are category\n   * searches, they must have the same root (in the same category or brand).\n   */\n  protected buildFacetChangedEvent(): Observable<FacetChangedEvent> {\n    return this.productSearchService.getResults().pipe(\n      pairwise(),\n      filter(([prev, curr]) => this.compareSearchResults(prev, curr)),\n      map(([prev, curr]) => {\n        const toggled =\n          this.getToggledBreadcrumb(curr.breadcrumbs, prev.breadcrumbs) ||\n          this.getToggledBreadcrumb(prev.breadcrumbs, curr.breadcrumbs);\n        if (toggled) {\n          return createFrom(FacetChangedEvent, {\n            code: toggled.facetCode,\n            name: toggled.facetName,\n            valueCode: toggled.facetValueCode,\n            valueName: toggled.facetValueName,\n            selected: curr.breadcrumbs.length > prev.breadcrumbs.length,\n          });\n        }\n      })\n    );\n  }\n\n  /**\n   * The 2 product searches (before and after facet changed) must have the same\n   * search queries; and if they are category searches, they also must have the\n   * same root (in the same category or brand).\n   */\n  private compareSearchResults(\n    prev: ProductSearchPage,\n    curr: ProductSearchPage\n  ): boolean {\n    if (prev && Object.keys(prev).length !== 0) {\n      // for text searches, they must have the same freeTextSearch\n      const sameFreeTextSearch =\n        prev.freeTextSearch !== '' &&\n        prev.freeTextSearch === curr.freeTextSearch;\n\n      // for category searches, they must have the same root\n      const sameCategoryRoot =\n        curr.breadcrumbs[0]?.facetCode === 'allCategories' &&\n        prev.breadcrumbs[0]?.facetCode === curr.breadcrumbs[0]?.facetCode &&\n        // same category or brand\n        prev.breadcrumbs[0].facetValueCode ===\n          curr.breadcrumbs[0].facetValueCode;\n\n      return sameFreeTextSearch || sameCategoryRoot;\n    }\n  }\n\n  /**\n   * Get the toggled breadcrumb. The 2 breadcrumb lists got from the 2 search results\n   * only can have one different solr filter term.\n   */\n  private getToggledBreadcrumb(\n    bc1: Breadcrumb[],\n    bc2: Breadcrumb[]\n  ): Breadcrumb {\n    if (bc1.length - bc2.length === 1) {\n      return bc1.find(\n        (x) =>\n          !bc2.find(\n            (y) =>\n              y.facetCode === x.facetCode &&\n              y.facetValueCode === x.facetValueCode\n          )\n      );\n    }\n  }\n}\n"]}