const crypto = require('crypto');
const fetch = require('node-fetch');
const Utils = require('../utils');
const utf8 = require('utf8');

const baseUrl = 'https://www.nomerogram.ru/api/v1.1';

const secretSuffix = 'queivoo1ieNgae2e';
const appId = 'p15';
const deviceId = '01b854631cb28e175ffbcccf6114acc3';
const from = 'search';
const userAgent = 'Nomerogram/2.18 (iPhone; iOS 13.7; Scale/2.00)';

class NomerogramProvider {
	static async getGroups(number) {
		try {
			let timestamp = Math.floor(Date.now() / 1000);
			let secretSource = appId + number + deviceId + from + timestamp + secretSuffix;
	
			let hash = crypto.createHash('sha256');
			hash.update(secretSource);
			let secret = hash.digest('hex');
			console.log('secret: ', secret);
	
			let url = `${baseUrl}/group/list?from=${from}&carplate=${number}&timestamp=${timestamp}&secret=${secret}&app_id=${appId}&device_id=${deviceId}`;
			let result = await fetch(utf8.encode(url), { 
				timeout: 25000,
				headers: { 'User-Agent': userAgent }
			});
			let json = await result.json();
	
			if(!json.success) {
				console.log('Nomerogram error: ', json.message);
				throw Error(json.message);
				//return [];
			}
	
			console.log('Nomerogram found ads: ', json.data.groups.length);
			return json.data.groups.map(g => {
				return {
					id: g.group_id,
					url: g.group_url,
					price: g.price,
					date: Utils.parseDate(g.date),
					mileage: g.mileage,
					region: g.region_name,
					city: g.city_name,
					adDescription: g.description,
					photos: g.photos.map(p => p.src.default)
				};
			});
		} catch(ex) {
			console.log('Nomerogram error: ', ex.message);
			ex.debugInfo = { nomerogram: { fields: 0, error: ex.message } };
			throw ex;
		}
	}
}

module.exports = NomerogramProvider;