import { Injectable } from '@angular/core';
import { PublicationService } from '../publication-service/publication.service';
import { ClientSideCacheService } from '../../client-side-cache/client-side-cache.service';

@Injectable()
export class OpcService {

	private readonly PGP_URL_LOOKUP = `getProductTablePageURL`;
	pubPath = '';
	pubId = '';

	constructor(
		private pubService: PublicationService,
		private cacheService: ClientSideCacheService
	) {}

	/** Given a Product family group table ID, return a canonical URL for the family group page. */
	public async getPGPUrl(tableID): Promise<string> {
		this.pubId = this.pubService.getPublicationId();
		this.pubPath = this.pubService.getPublicationPath();
		const lookupUrl = `/content${this.pubPath}/${this.PGP_URL_LOOKUP}/${this.pubId}/${tableID}`;

		const promise = new Promise<string>((resolve, reject) => {
			this.cacheService.getValue(`${this.pubPath}-${tableID}`, lookupUrl).toPromise().then(res => {
				if (res) {
					resolve(res['productTablePageURL']);
				} else {
					console.error('PGP error');
				}
			},
			err => {
				console.error('No PGP found');
			});
		});

		return promise;
	}

	public getPGPUrlWithPath(tableID, publicationPath, publicationId) {
		const lookupUrl = `/content${publicationPath}/${this.PGP_URL_LOOKUP}/${publicationId}/${tableID}`;
		
		const promise = new Promise<string>((resolve, reject) => {
			this.cacheService.getValue(`${publicationPath}-${tableID}`, lookupUrl).toPromise().then(res => {
				if (res) {
					resolve(res['productTablePageURL']);
				} else {
					reject(undefined);
				}
			},
			err => {
				console.error('No PGP found');
			});
		});

		return promise;
	}

}