feat: added venues service #78

front-end/src/app/tabs/venues/venues.service.ts

@@ -0,0 +1,85 @@
+import { Injectable } from '@angular/core';
+import { IDEAApiService } from '@idea-ionic/common';
+
+import { Venue } from '@models/venue.model';
+
+@Injectable({ providedIn: 'root' })
+export class VenuesService {
+  private venues: Venue[];
+
+  /**
+   * The number of venues to consider for the pagination, when active.
+   */
+  MAX_PAGE_SIZE = 24;
+
+  constructor(private api: IDEAApiService) {}
+
+  private async loadList(): Promise<void> {
+    this.venues = (await this.api.getResource(['venues'])).map(v => new Venue(v));
+  }
+
+  /**
+   * Get (and optionally filter) the list of venues.
+   * Note: it can be paginated.
+   * Note: it's a slice of the array.
+   */
+  async getList(options: {
+    force?: boolean;
+    withPagination?: boolean;
+    startPaginationAfterId?: string;
+    search?: string;
+  }): Promise<Venue[]> {
+    if (!this.venues || options.force) await this.loadList();
+    if (!this.venues) return null;
+
+    options.search = options.search ? String(options.search).toLowerCase() : '';
+
+    let filteredList = this.venues.slice();
+
+    if (options.search)
+      filteredList = filteredList.filter(x =>
+        options.search
+          .split(' ')
+          .every(searchTerm => [x.venueId, x.name].filter(f => f).some(f => f.toLowerCase().includes(searchTerm)))
+      );
+
+    if (options.withPagination && filteredList.length > this.MAX_PAGE_SIZE) {
+      let indexOfLastOfPreviousPage = 0;
+      if (options.startPaginationAfterId)
+        indexOfLastOfPreviousPage = filteredList.findIndex(x => x.venueId === options.startPaginationAfterId) || 0;
+      filteredList = filteredList.slice(0, indexOfLastOfPreviousPage + this.MAX_PAGE_SIZE);
+    }
+
+    return filteredList;
+  }
+
+  /**
+   * Get the full details of a venue by its id.
+   */
+  async getById(venueId: string): Promise<Venue> {
+    return new Venue(await this.api.getResource(['venues', venueId]));
+  }
+
+  /**
+   * Insert a new venue.
+   */
+  async insert(venue: Venue): Promise<Venue> {
+    return new Venue(await this.api.postResource(['venues'], { body: venue }));
+  }
+  /**
+   * Update an existing venue.
+   */
+  async update(venue: Venue): Promise<Venue> {
+    return new Venue(
+      await this.api.putResource(['venues', venue.venueId], {
+        body: venue
+      })
+    );
+  }
+  /**
+   * Delete a venue.
+   */
+  async delete(venue: Venue): Promise<void> {
+    await this.api.deleteResource(['venues', venue.venueId]);
+  }
+}