/**
 * @fileoverview Example and test file for the TeraboxScraper library.
 * This file demonstrates the full capabilities of the library, including
 * complex initialization, file info retrieval, and robust download with progress.
 *
 * NOTE: For this test to work, you MUST provide a valid Terabox share link
 * and a valid 'ndus' cookie from a logged-in Terabox session.
 * The test will attempt to download a small file to the 'downloads' directory.
 */

import { TeraboxScraper, DownloadProgress, Logger, bytesToHuman } from '../index';
import * as path from 'path';

// --- Configuration ---
// !!! REPLACE WITH YOUR ACTUAL COOKIE AND A VALID TERABOX SHARE LINK !!!
const YOUR_TERABOX_COOKIE = "lang=en; ndus=YOUR_NDUS_COOKIE_HERE;";
const TEST_SHARE_LINK = "https://www.terabox.app/s/YOUR_SHARE_LINK_HERE"; // e.g., a link to a small, public file

// --- Logger Setup (Optional, but recommended for better output) ---
const logger = Logger.getInstance({ level: 'info', prettyPrint: true }).getLogger();

/**
 * Custom progress bar function for a powerful and attractive terminal display.
 * @param progress The download progress data.
 */
function customProgressBar(progress: DownloadProgress): void {
    const totalSizeHuman = bytesToHuman(progress.totalSize);
    const downloadedHuman = bytesToHuman(progress.downloaded);
    const speedHuman = bytesToHuman(progress.speedBps) + '/s';
    const eta = progress.etaSeconds === Infinity ? 'N/A' : `${progress.etaSeconds.toFixed(0)}s`;

    const barLength = 40;
    const filledLength = Math.round(barLength * progress.percentage / 100);
    const emptyLength = barLength - filledLength;
    const bar = '█'.repeat(filledLength) + '░'.repeat(emptyLength);

    process.stdout.write(
        `\r[${bar}] ${progress.percentage.toFixed(2)}% | ${downloadedHuman} / ${totalSizeHuman} | Speed: ${speedHuman} | ETA: ${eta}`
    );
}

/**
 * Main function to run the test.
 */
async function runTest() {
	        logger.info('--- Starting TeraboxScraper Complex Test ---');

    if (YOUR_TERABOX_COOKIE.includes('YOUR_NDUS_COOKIE_HERE') || TEST_SHARE_LINK.includes('YOUR_SHARE_LINK_HERE')) {
	        logger.fatal('Please update YOUR_TERABOX_COOKIE and TEST_SHARE_LINK in src/test/test.ts with real values to run a functional test.');
        return;
    }

    try {
        // 1. Initialize the Scraper with complex configuration
        const scraper = new TeraboxScraper({
            cookie: YOUR_TERABOX_COOKIE,
            timeout: 60000, // 60 seconds timeout
            // Optional: proxy: 'http://user:pass@host:port',
        });

        // 2. Fetch File Information
	        logger.info(`Attempting to fetch info for link: ${TEST_SHARE_LINK}`);
        const infoResponse = await scraper.getFileInfo(TEST_SHARE_LINK);

        if (!infoResponse.success || !infoResponse.data) {
	        logger.error({ error: infoResponse.error }, 'Failed to get file information.');
            return;
        }

        const fileInfo = infoResponse.data;
	        logger.info({
	            fileName: fileInfo.fileName,
	            size: fileInfo.fileSizeHuman,
	            downloadLink: fileInfo.downloadLink.substring(0, 50) + '...', // Truncate link for log
	        }, 'File Info Retrieved Successfully.');

        // 3. Download the File
        const downloadDir = path.join(process.cwd(), 'downloads');
	        logger.info({ downloadDir }, `Starting download to directory: ${downloadDir}`);

        const downloadResponse = await scraper.downloadFile(
            fileInfo,
            downloadDir, // Save to the 'downloads' directory
            customProgressBar // Use the custom, powerful progress bar
        );

        // Clear the progress bar line
        process.stdout.write('\r' + ' '.repeat(100) + '\r');

        if (!downloadResponse.success || !downloadResponse.data) {
	        logger.error({ error: downloadResponse.error }, 'File download failed.');
            return;
        }

        const result = downloadResponse.data;
	        logger.info({
	            filePath: result.filePath,
	            duration: `${(result.durationMs / 1000).toFixed(2)} seconds`,
	        }, '--- Download Complete ---');

    } catch (e: any) {
	        logger.fatal({ error: e.message || e }, 'An unhandled critical error occurred during the test.');
    } finally {
	        logger.info('--- TeraboxScraper Complex Test Finished ---');
    }
}

runTest();