andrade-soulseek-downloader/dist/presentation/api/api-handler.js

Simple, safe Soulseek download library with built-in rate limiting to prevent bans

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.APIHandler = void 0;
const dotenv = __importStar(require("dotenv"));
const core_1 = require("../../core");
dotenv.config();
/**
 * API handler for Soulseek downloader.
 * Manages singleton connection and provides simple API.
 */
class APIHandler {
    static instance = null;
    downloader = null;
    constructor() { }
    /**
     * Gets singleton instance of API handler.
     * @returns APIHandler instance
     */
    static getInstance() {
        if (!APIHandler.instance) {
            APIHandler.instance = new APIHandler();
        }
        return APIHandler.instance;
    }
    /**
     * Creates download configuration from environment.
     * @returns Download configuration
     */
    createConfig() {
        return {
            maxAttempts: parseInt(process.env.SOULSEEK_MAX_ATTEMPTS || '10'),
            searchTimeout: parseInt(process.env.SOULSEEK_SEARCH_TIMEOUT || '30000'),
            downloadTimeout: parseInt(process.env.SOULSEEK_DOWNLOAD_TIMEOUT || '120000'),
            preferSlotsAvailable: process.env.SOULSEEK_PREFER_SLOTS !== 'false',
            minSpeed: parseInt(process.env.SOULSEEK_MIN_SPEED || '0'),
            searchDelay: parseInt(process.env.SOULSEEK_SEARCH_DELAY || '5000'),
            downloadDelay: parseInt(process.env.SOULSEEK_DOWNLOAD_DELAY || '3000'),
            maxConcurrent: 1, // Always use 1 to prevent bans
            cooldownAfterError: parseInt(process.env.SOULSEEK_ERROR_COOLDOWN || '10000')
        };
    }
    /**
     * Ensures downloader instance is initialized.
     */
    ensureDownloader() {
        if (!this.downloader) {
            const config = this.createConfig();
            this.downloader = new core_1.SoulseekDownloader(config);
        }
    }
    /**
     * Downloads a track from Soulseek network.
     * @param artist - Artist name
     * @param title - Track title
     * @param folderName - Optional subfolder name within SOULSEEK_DOWNLOAD_DIR
     * @param customFileName - Optional custom filename (without extension)
     * @returns Path to downloaded file or null if failed
     */
    async download(artist, title, folderName, customFileName) {
        try {
            this.ensureDownloader();
            const result = await this.downloader.searchAndDownload(artist, title, folderName, customFileName);
            return result;
        }
        catch (error) {
            console.error('Download error:', error);
            return null;
        }
    }
    /**
     * Disconnects from Soulseek and cleans up resources.
     */
    async disconnect() {
        if (this.downloader) {
            await this.downloader.disconnect();
            this.downloader = null;
        }
    }
    /**
     * Resets the singleton instance.
     * Useful for testing or forced reconnection.
     */
    static reset() {
        if (APIHandler.instance?.downloader) {
            APIHandler.instance.downloader.disconnect();
        }
        APIHandler.instance = null;
    }
}
exports.APIHandler = APIHandler;
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