andrade-soulseek-downloader/dist/infrastructure/repositories/soulseek-track-repository.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.SoulseekTrackRepository = void 0;
const inversify_1 = require("inversify");
const domain_1 = require("../../domain");
const string_similarity_js_1 = require("string-similarity-js");
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
/**
 * Infrastructure adapter for Soulseek network operations.
 * Implements ITrackRepository port for hexagonal architecture.
 */
let SoulseekTrackRepository = class SoulseekTrackRepository {
    client;
    /**
     * @param client - Soulseek client instance
     */
    constructor(client) {
        this.client = client;
    }
    /**
     * Searches Soulseek network for matching tracks.
     * @inheritdoc
     */
    async search(artist, title, minBitrate, maxBitrate, timeout) {
        const query = `${artist} ${title}`.toLowerCase();
        const searchTimeout = timeout || parseInt(process.env.SOULSEEK_SEARCH_TIMEOUT || '30000');
        return new Promise((resolve, reject) => {
            this.client.search({
                req: query,
                timeout: searchTimeout
            }, (err, results) => {
                if (err) {
                    reject(err);
                    return;
                }
                const tracks = results
                    .filter(r => {
                    // Apply bitrate filtering
                    const meetsMinimum = r.bitrate >= minBitrate;
                    const meetsMaximum = !maxBitrate || r.bitrate <= maxBitrate;
                    return meetsMinimum && meetsMaximum;
                })
                    .map(r => this.mapToTrack(r, artist, title))
                    .filter(t => t !== null);
                resolve(tracks);
            });
        });
    }
    /**
     * Downloads track from Soulseek peer.
     * @inheritdoc
     */
    async download(track, destinationPath) {
        return new Promise((resolve) => {
            const timeout = setTimeout(() => {
                resolve(null);
            }, 120000);
            this.client.download({
                file: {
                    user: track.getUser(),
                    file: track.getFilePath(),
                    size: track.getFileSize(),
                    bitrate: track.getBitrate().getValue(),
                    slots: track.hasAvailableSlots(),
                    speed: track.getSpeed()
                },
                path: destinationPath
            }, (err) => {
                clearTimeout(timeout);
                if (err) {
                    resolve(null);
                }
                else {
                    resolve(destinationPath);
                }
            });
        });
    }
    /**
     * Checks local filesystem for existing file.
     * @inheritdoc
     */
    async exists(destinationPath) {
        return fs.existsSync(destinationPath);
    }
    /**
     * Maps Soulseek result to domain Track entity.
     * @returns Track or null if invalid data
     */
    mapToTrack(result, artist, title) {
        try {
            const filename = path.basename(result.file);
            const matchScore = this.calculateMatchScore(filename, artist, title);
            return new domain_1.Track(domain_1.TrackId.generate(result.user, result.file), artist, title, new domain_1.Bitrate(result.bitrate), result.size, result.file, result.user, result.slots, result.speed, matchScore);
        }
        catch (error) {
            // Invalid track data, skip
            return null;
        }
    }
    /**
     * Calculates similarity score between query and filename.
     * @returns Score from 0-1
     */
    calculateMatchScore(filename, artist, title) {
        const query = `${artist} ${title}`.toLowerCase();
        const cleanFilename = filename.toLowerCase().replace(/\.[^/.]+$/, '');
        return (0, string_similarity_js_1.stringSimilarity)(query, cleanFilename);
    }
};
exports.SoulseekTrackRepository = SoulseekTrackRepository;
exports.SoulseekTrackRepository = SoulseekTrackRepository = __decorate([
    (0, inversify_1.injectable)(),
    __param(0, (0, inversify_1.inject)('SoulseekClient')),
    __metadata("design:paramtypes", [Object])
], SoulseekTrackRepository);
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