Sync GDrive 🚀

High-performance Google Drive synchronization library with smart incremental sync, parallel downloads, and beautiful progress bars.

✨ Key Features

• 🔄 Smart Incremental Sync - Resume interrupted downloads, skip up-to-date files
• ⚡ Parallel Downloads - 10-20x faster with configurable concurrency
• 📊 Progress Bars - Beautiful real-time progress with download/skip counts
• 🛠️ Powerful CLI - Complete command-line interface with performance tuning
• 🎯 Flexible Export - Custom formats for Google Docs, Sheets, Slides
• 🔐 Service Account Auth - Secure authentication via Google service accounts

🚀 Quick Start

CLI Usage (Recommended)

# Install globally
npm install -g sync-gdrive

# Set up authentication
export GOOGLE_CLIENT_EMAIL="[email protected]"
export GOOGLE_PRIVATE_KEY="-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----"

# Smart incremental sync (resumes perfectly!)
sync-gdrive "1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs85j4X_VuSqI" ./downloads

# High-performance sync with progress
sync-gdrive "YOUR_FOLDER_ID" ./downloads --concurrency 20 --verbose

Progress Output:

🔍 Phase 1: Scanning for files...
████████████ | 100% | Scanning | Discovering files and folders...
📥 Phase 2: Downloading files...
████████████ | 67% | 234/350 Files (↓45 ⊘189) | report.pdf | 15.2 files/sec | ETA: 8s

✅ Sync completed successfully!
⏱️  Duration: 23.4 seconds
📊 Files processed: 350
📥 Downloaded: 45 files
⊘ Skipped: 305 files
💡 305 files were up-to-date and skipped. Use --force-download to re-download all files.

Library Usage

// Regular JS
const gdriveSync = require("sync-gdrive");

const keyConfig = {
  clientEmail: process.env.GOOGLE_CLIENT_EMAIL,
  privateKey: process.env.GOOGLE_PRIVATE_KEY,
};

// Basic usage with smart defaults
await syncGDrive(fileOrFolderId, destFolder, keyConfig);

// High-performance with progress callback
const options = {
  concurrency: 15, // 15 parallel downloads
  verbose: true, // Detailed logging
  progressCallback: (progress) => {
    console.log(
      `${progress.completedFiles}/${progress.totalFiles} files - ${progress.speed}`
    );
  },
};

await syncGDrive(fileOrFolderId, destFolder, keyConfig, options);

// TypeScript
import syncGDrive, { IKeyConfig } from "sync-gdrive";

const keyConfig: IKeyConfig = {
  clientEmail: process.env.GOOGLE_CLIENT_EMAIL,
  privateKey: process.env.GOOGLE_PRIVATE_KEY,
};

await syncGDrive(fileOrFolderId, destFolder, keyConfig, options);

🔄 Incremental Sync Magic

Perfect Resume Capability

# Download gets interrupted...
sync-gdrive YOUR_FOLDER_ID ./backup
# Downloaded 150/500 files... ^C

# Resume exactly where you left off!
sync-gdrive YOUR_FOLDER_ID ./backup
# ████████████ | 100% | 500/500 Files (↓350 ⊘150) | 🎉 Skipped 150, downloaded 350

Sync Mode Options

# Smart incremental (default) - compares timestamps
sync-gdrive YOUR_FOLDER_ID ./backup

# Force re-download everything
sync-gdrive YOUR_FOLDER_ID ./backup --force-download

# Skip existing files completely
sync-gdrive YOUR_FOLDER_ID ./backup --skip-existing

# Enhanced precision (size + time matching)
sync-gdrive YOUR_FOLDER_ID ./backup --check-size-and-time

⚡ Performance Features

Parallel Downloads

• Default: 10 concurrent downloads
• High-speed: Up to 50 concurrent downloads
• Rate-limit safe: Stays well under Google's 200 requests/second limit

Smart API Usage

• Incremental sync: Only downloads changed files
• Metadata caching: Minimal API calls for unchanged files
• Batch processing: Efficient file discovery

Speed Improvements

• 10-20x faster than sequential downloading
• Near-instant updates for mostly-unchanged folders
• Configurable concurrency for optimal performance

📖 Documentation & Examples

• 📋 Incremental Sync Guide - Complete guide to resumable downloads
• 🚀 CLI Usage Examples - Performance tuning and advanced usage
• 📊 Progress Bar Demo - See progress bars in action

🛠️ CLI Reference

Incremental Sync Options

--force-download       # Re-download all files even if they exist locally
--skip-existing        # Skip all files that exist locally (no time check)
--check-size-and-time  # Enhanced checking: skip if size AND time match exactly

Performance Options

--concurrency <num>    # Number of parallel downloads (default: 10)
--batch-size <num>     # Files processed per batch (default: 20)
--sleep-time <ms>      # Delay between operations in ms (default: 0)

File Type Options

--docs-type <ext>      # Google Docs export format (default: docx)
--sheets-type <ext>    # Google Sheets export format (default: xlsx)
--slides-type <ext>    # Google Slides export format (default: pptx)
--maps-type <ext>      # Google Maps export format (default: kml)
--fallback-type <ext>  # Fallback GSuite export format (default: pdf)

Other Options

--verbose              # Enable verbose logging with skip reasons
--no-abort-on-error    # Continue on errors instead of stopping
--no-progress          # Disable progress bars (for scripts)
--help                 # Show complete help message

📋 Library Options

When using as a library, the options parameter supports:

Performance & Sync Control

• concurrency: Number of parallel downloads (default: 10)
• batchSize: Files processed per batch (default: 20)
• sleepTime: Delay between operations in ms (default: 0)
• forceDownload: Re-download all files (default: false)
• skipExisting: Skip all existing files (default: false)
• checkSizeAndTime: Enhanced precision checking (default: false)

File Types & Export

• docsFileType: Google Docs export format (default: "docx")
• sheetsFileType: Google Sheets export format (default: "xlsx")
• slidesFileType: Google Slides export format (default: "pptx")
• mapsFileType: Google Maps export format (default: "kml")
• fallbackGSuiteFileType: Fallback export format (default: "pdf")

Debugging & Monitoring

• verbose: Enable debug logging (default: false)
• logger: Custom logger with debug/warn/error methods
• progressCallback: Function to receive progress updates
• abortOnError: Stop on first error (default: true)

Google Drive API

• supportsAllDrives: Support shared drives (default: false)
• includeItemsFromAllDrives: Include shared drive items (default: false)

🏆 Real-World Examples

Daily Backup Script

#!/bin/bash
# Smart incremental backup - only downloads changes!
sync-gdrive "YOUR_FOLDER_ID" /backup/gdrive \
  --verbose \
  --concurrency 15 \
  --no-progress

Disaster Recovery

# Force re-download everything after data loss
sync-gdrive "YOUR_FOLDER_ID" ./recovery --force-download --verbose

Development Workflow

# Fast sync for development - skip unchanged files
sync-gdrive "YOUR_FOLDER_ID" ./content --concurrency 25 --verbose

🔧 Google Service Account Setup

1. Go to Google Cloud Console
2. Create a new project or select existing
3. Enable Google Drive API
4. Create a Service Account
5. Generate and download JSON key
6. Share your Google Drive folder with the service account email

Environment Setup:

export GOOGLE_CLIENT_EMAIL="[email protected]"
export GOOGLE_PRIVATE_KEY="-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----"

📈 Performance Benchmarks

Example sync performance:

Initial Sync:     2,456 files in 8m 32s  (4.8 files/sec)
Daily Update:     2,456 files in 12s     (204.7 files/sec) ← Only 8 files changed!
Force Re-sync:    2,456 files in 3m 45s  (10.9 files/sec) ← 20x concurrency

🤝 Contributing

Contributions welcome! Please see issues for current needs.

📄 License

MIT License - see LICENSE file for details.

👥 Contributors

• Andre John Mas (Original author)
• lightninglu10 (enhancements) Enhanced with incremental sync, parallel downloads, and CLI improvements

Perfect for automated backups, content management systems, development workflows, and any application needing reliable Google Drive synchronization! 🎯