40 lines
1.2 KiB
TypeScript
40 lines
1.2 KiB
TypeScript
import { Injectable, inject } from '@angular/core';
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import { HttpClient } from '@angular/common/http';
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import { firstValueFrom } from 'rxjs';
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import { ServerDirectoryFacade } from '../../../server-directory';
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import { LinkMetadata } from '../../../../shared-kernel';
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const URL_PATTERN = /https?:\/\/[^\s<>)"']+/g;
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@Injectable({ providedIn: 'root' })
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export class LinkMetadataService {
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private readonly http = inject(HttpClient);
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private readonly serverDirectory = inject(ServerDirectoryFacade);
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extractUrls(content: string): string[] {
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return [...content.matchAll(URL_PATTERN)].map((match) => match[0]);
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}
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async fetchMetadata(url: string): Promise<LinkMetadata> {
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try {
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const apiBase = this.serverDirectory.getApiBaseUrl();
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const result = await firstValueFrom(
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this.http.get<Omit<LinkMetadata, 'url'>>(
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`${apiBase}/link-metadata`,
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{ params: { url } }
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)
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);
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return { url, ...result };
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} catch {
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return { url, failed: true };
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}
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}
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async fetchAllMetadata(urls: string[]): Promise<LinkMetadata[]> {
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const unique = [...new Set(urls)];
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return Promise.all(unique.map((url) => this.fetchMetadata(url)));
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}
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}
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