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🏖️ Konoha Land API - Free Indonesian Administrative Regions API

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![Konoha Land API Banner](https://raw.githubusercontent.com/leonurium/konoland-api/main/banner.png)

# 🌏 Konoha Land API

**Free Indonesian Administrative Regions API**

[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https://github.com/leonurium/konoland-api)
[![License: ISC](https://img.shields.io/badge/License-ISC-blue.svg)](https://opensource.org/licenses/ISC)

**Live API**: [https://konoland-api.vercel.app](https://konoland-api.vercel.app) 🆓 Free to use!

📋 [Changelog](CHANGELOG.md)

</div>

## 📖 About

**Konoha Land API** is a free, open-source REST API providing comprehensive data about Indonesian administrative regions (Provinces, Regencies, Districts, and Villages).

**Inspired by**: [Wilayah Nusantara API](https://github.com/theodevoid/wilayah-nusantara) by [@theodevoid](https://github.com/theodevoid)

### ✨ Features

- 🆓 **100% Free** - No API keys required
- 🚀 **Fast & Reliable** - Powered by Vercel serverless
- 📊 **Latest 2025 Data** - 38 provinces, 514 regencies, 7,285 districts, 83,762 villages
- 📮 **Complete Postal Codes** - 100% coverage for all villages
- 🔄 **Backward Compatible** - Drop-in replacement for legacy API
- 📦 **Self-Hostable** - Deploy to your own Vercel account
- 🔀 **Advanced Features** - Sorting, pagination, and legacy aliases support
- 🔎 **Search Endpoint** - One query across provinces/regencies/districts/villages
- 📄 **Static API** - Same data as JSON files for GitHub Pages (no backend)

## 🚀 Quick Start

### Option 1: Use the Free Public API (Easiest)
The API is available for free - no setup needed!

```bash
# Get all provinces
curl https://konoland-api.vercel.app/province

# Get province by code
curl https://konoland-api.vercel.app/province/11

# Search by name
curl https://konoland-api.vercel.app/province?name=Jawa

# Search across all levels (province/regency/district/village)
curl "https://konoland-api.vercel.app/search?q=jakarta"
```

### Option 2: Static API on GitHub Pages (no backend)
Same data as static JSON files you can host on GitHub Pages—no database or server required. **Fork** → **Settings → Pages → Source: GitHub Actions** → push to `main` (or run the "Deploy Static API to GitHub Pages" workflow). You get:
- **Static API**: `https://<username>.github.io/<repo>/api/` (e.g. `.../api/provinces.json`)

Full guide: [docs/STATIC_API.md](docs/STATIC_API.md). Test locally: `npm run generate:static` then `./scripts/test-static-api.sh [BASE_URL]`.

> **Search endpoint note**: GitHub Pages is **static hosting**. The dynamic endpoint `GET /search?q=...` **only works on the Vercel/server backend**, not on the GitHub Pages static API JSON files. If you need search on static hosting, you must ship a **precomputed search index** and do filtering on the client.

> **⚠️ Important**: The public static API at `https://leonurium.github.io/konoland-api/` is shared among all users and subject to GitHub Pages' **100GB/month bandwidth limit** (~3M requests/month). For production use or high traffic, **please fork and host on your own GitHub Pages** (100% free, takes 2 minutes). This gives you your own dedicated bandwidth and ensures your app always has access to the API. Plus, you can customize the data or add features!

### Option 3: Self-Host on Vercel (5 minutes)
1. **Fork this repository** on GitHub
2. **Create a Supabase project** at [supabase.com](https://supabase.com) (free tier works)
3. **Get your database URL** from Supabase Settings → Database
4. **Deploy to Vercel**:
   - Go to [vercel.com/new](https://vercel.com/new)
   - Import your forked repository
   - Add environment variable: `DATABASE_URL` (your Supabase connection string)
   - Click Deploy
5. **Import data** (see Database Setup below)

## 📡 API Endpoints

### Response Format

**List endpoints** (paginated) return:
```json
{
  "data": [
    {
      "code": "11",
      "province": "Aceh"
    },
    ...
  ],
  "meta": {
    "limit": 10,
    "page": 1,
    "total": 37
  }
}
```

**Detail endpoints** (by code) return the entity directly:
```json
{
  "code": "11",
  "province": "Aceh"
}
```

### Endpoints

| Endpoint | Description | Example |
|----------|-------------|---------|
| `GET /province` | List provinces (paginated) | `/province?page=1&limit=10` |
| `GET /province/:code` | Get province by code | `/province/11` |
| `GET /regency` | List regencies (paginated) | `/regency?provinceCode=11` |
| `GET /regency/:code` | Get regency by code | `/regency/1101` |
| `GET /district` | List districts (paginated) | `/district?regencyCode=1101` |
| `GET /district/:code` | Get district by code | `/district/110101` |
| `GET /village` | List villages (paginated) | `/village?districtCode=110101` |
| `GET /village/:code` | Get village by code | `/village/1101012001` |
| `GET /search` | Search across province/regency/district/village | `/search?q=jakarta` |

### `GET /search` (cross-entity search)

Search supports a single query parameter:
- `q` - Search term (partial match, case-insensitive)

Response format:
```json
{
  "data": [
    { "type": "province", "item": { "code": "11", "province": "Aceh" } },
    { "type": "regency", "item": { "code": "1101", "regency": "...", "province": { "code": "11", "province": "Aceh" } } },
    { "type": "district", "item": { "code": "1101010", "district": "...", "regency": { "code": "1101", "regency": "...", "province": { "code": "11", "province": "Aceh" } } } },
    { "type": "village", "item": { "code": "1101010001", "village": "...", "postalCode": "...", "district": { "code": "1101010", "district": "...", "regency": { "code": "1101", "regency": "...", "province": { "code": "11", "province": "Aceh" } } } } }
  ]
}
```

Example:
```bash
curl "https://konoland-api.vercel.app/search?q=jakarta"
```

> Tip (zsh): always **quote** URLs containing `?` to avoid shell globbing errors.

### Query Parameters

All list endpoints support:
- `page` - Page number (default: 1)
- `limit` - Items per page (default: 10)
- `name` - Search by name (partial match)
- `code` - Filter by code (returns entity directly)
- `sortBy` - Field to sort by (optional, defaults to `code`)
- `sortDirection` - Sort direction: `ASC` or `DESC` (default: `ASC`)
- `provinceCode` - Filter by parent province
- `regencyCode` - Filter by parent regency
- `districtCode` - Filter by parent district

#### Legacy Aliases (Backward Compatibility)

For compatibility with [wilayah-nusantara API](https://github.com/theodevoid/wilayah-nusantara), the following legacy parameter names are also supported:

| Legacy Parameter | Current Parameter | Endpoint |
|-----------------|-------------------|----------|
| `provinsiCode` | `provinceCode` | `/regency` |
| `kabkotCode` | `regencyCode` | `/district` |
| `kecamatanCode` | `districtCode` | `/village` |

**Example:**
```bash
# Both work the same way:
GET /regency?provinceCode=11    # Current API
GET /regency?provinsiCode=11    # Legacy (wilayah-nusantara)

GET /district?regencyCode=1101  # Current API
GET /district?kabkotCode=1101   # Legacy (wilayah-nusantara)

GET /village?districtCode=110101   # Current API
GET /village?kecamatanCode=110101  # Legacy (wilayah-nusantara)
```

#### Sorting Options

Each endpoint supports different sort fields:
- **Provinces**: `code`, `province`
- **Regencies**: `code`, `regency`, `provinceCode`, `type`
- **Districts**: `code`, `district`, `regencyCode`
- **Villages**: `code`, `village`, `districtCode`, `postalCode`

**Examples:**
```bash
# Sort provinces by name in ascending order
GET /province?sortBy=province&sortDirection=ASC

# Sort regencies by name in descending order
GET /regency?provinceCode=11&sortBy=regency&sortDirection=DESC

# Default behavior (no sorting params = sort by code ASC)
GET /province
```

## 🗄️ Database Setup (For Self-Hosting)

### Step 1: Create Supabase Project

1. Go to [supabase.com](https://supabase.com) and create a project
2. Get your connection string from **Settings** → **Database**
3. Use **Connection Pooling** URL for Vercel (port 6543)

### Step 2: Create Tables

**Option A: Use the SQL file (Recommended)**

- **For default 'public' schema**: Copy and paste the contents of `database-schema.sql` into Supabase SQL Editor, then click **Run**.
- **For custom schema**: Use `database-schema-with-schema.sql` instead. Replace `YOUR_SCHEMA_NAME` with your actual schema name (e.g., 'konoland-schema'), then run it.

**Option B: Copy SQL manually**

Run this SQL in Supabase SQL Editor:

```sql
-- Create provinces table
CREATE TABLE provinces (
  code BIGINT PRIMARY KEY,
  province VARCHAR(255) NOT NULL
);

-- Create regencies table
CREATE TABLE regencies (
  code BIGINT PRIMARY KEY,
  province_code BIGINT NOT NULL,
  regency VARCHAR(255) NOT NULL,
  type VARCHAR(20) NOT NULL CHECK (type IN ('Kota', 'Kabupaten')),
  FOREIGN KEY (province_code) REFERENCES provinces(code)
);

-- Create districts table
CREATE TABLE districts (
  code BIGINT PRIMARY KEY,
  regency_code BIGINT NOT NULL,
  district VARCHAR(255) NOT NULL,
  FOREIGN KEY (regency_code) REFERENCES regencies(code)
);

CREATE INDEX idx_districts_regency_code ON districts(regency_code);

-- Create villages table
CREATE TABLE villages (
  code BIGINT PRIMARY KEY,
  district_code BIGINT NOT NULL,
  village VARCHAR(255) NOT NULL,
  postal_code VARCHAR(10) NOT NULL,
  FOREIGN KEY (district_code) REFERENCES districts(code)
);
```

### Step 3: Import CSV Data

CSV files are in `data/2025/` directory - **ready to import, columns match database exactly!**

1. Go to Supabase **Table Editor**
2. Import in this order (important for foreign keys!):
   - `provinces.csv` → `provinces` table
   - `regencies.csv` → `regencies` table  
   - `districts.csv` → `districts` table
   - `villages.csv` → `villages` table
3. For each file:
   - Select the table
   - Click **Insert** → **Import data from CSV**
   - Upload the file
   - ✅ Columns will auto-map correctly (no manual mapping needed!)

**CSV Files** (columns match database exactly):
- `provinces.csv`: `code, province` (38 provinces)
- `regencies.csv`: `code, province_code, regency, type` (514 regencies)
- `districts.csv`: `code, regency_code, district` (7,285 districts)
- `villages.csv`: `code, district_code, village, postal_code` (83,762 villages with 100% postal codes)

### Step 4: Configure Environment Variables

In Vercel dashboard (or `.env` file for local development), add:
- `DATABASE_URL` - Your Supabase Connection Pooling URL
- `NODE_ENV=production` (or `development` for local)
- `APP_ENV=production` (or `development` for local)
- `DATABASE_SCHEMA` (Optional) - Specify a custom schema name if you're not using the default 'public' schema

**Example `.env` file:**
```env
DATABASE_URL=postgresql://postgres.[PROJECT-REF]:[PASSWORD]@aws-0-[REGION].pooler.supabase.com:6543/postgres?pgbouncer=true
NODE_ENV=production
APP_ENV=production
DATABASE_SCHEMA=konoland-schema  # Optional: only if using a custom schema
```

## 🛠️ Local Development

### Prerequisites

- Node.js 18+
- npm
- Supabase account (for database)

### Setup

```bash
# Clone repository
git clone https://github.com/leonurium/konoland-api.git
cd konoland-api

# Install dependencies
npm install

# Create .env file
cp .env.example .env

# Update .env with your Supabase credentials
# DATABASE_URL=postgresql://postgres:[PASSWORD]@db.[PROJECT-REF].supabase.co:5432/postgres

# Start development server
npm run start:dev

# API will be available at http://localhost:3000
```

### Available Scripts

```bash
npm run start:dev      # Start with hot reload
npm run build          # Build for production
npm run start:prod     # Start production server
npm run generate:static # Generate static API JSON from data/2025 (output: static-api/api/)
npm run lint           # Run linter
```

## 📊 Data Statistics

**2025 Data** (Kepmendagri No 300.2.2-2138 Tahun 2025):
- **38 Provinces** (Provinsi) - Including 4 new Papua provinces
- **514 Regencies** (Kota/Kabupaten)
- **7,285 Districts** (Kecamatan)
- **83,762 Villages** (Desa/Kelurahan) - With 100% postal code coverage

Data is accurate as of **2025** and follows official Indonesian government structure.

**What's New in 2025:**
- 4 new provinces in Papua region (codes 93-96)
- Complete postal code data for all villages
- Updated administrative boundaries

## 🔄 Backward Compatibility

This API is **100% backward compatible** with the original [Wilayah Nusantara API](https://github.com/theodevoid/wilayah-nusantara):

- ✅ Same response format
- ✅ Same endpoints
- ✅ Same query parameters
- ✅ Same error messages
- ✅ Drop-in replacement

Existing applications can switch to this API without any code changes!

## 🚢 Deployment

### Deploy to Vercel

1. **Push to GitHub**:
   ```bash
   git init
   git add .
   git commit -m "Initial commit"
   git remote add origin https://github.com/leonurium/konoland-api.git
   git push -u origin main
   ```

2. **Deploy on Vercel**:
   - Go to [vercel.com/new](https://vercel.com/new)
   - Import your repository
   - Add environment variables (see Database Setup)
   - Click Deploy

3. **Your API is live!** 🎉

## 📋 TODO / Roadmap

- [x] ~~Update Data to 2025~~ **✅ DONE** (January 2026)
- [x] ~~Integrate Postal Codes~~ **✅ DONE** (100% coverage)
- [x] ~~Static API on GitHub Pages~~ **✅ DONE** (landing page + JSON API, same response shape)
- [ ] Add caching layer for improved performance
- [ ] Add API rate limiting

## 🤝 Contributing

Contributions are welcome!

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

See [CONTRIBUTING.md](CONTRIBUTING.md) for details.

## 📝 License

ISC License - See [LICENSE](LICENSE) file

## 🙏 Acknowledgments

- **[Wilayah Nusantara API](https://github.com/theodevoid/wilayah-nusantara)** by [@theodevoid](https://github.com/theodevoid) - Original inspiration
- **Kementerian Dalam Negeri (Kemendagri)** - Official 2025 data
- [Supabase](https://supabase.com) for free PostgreSQL hosting
- [Vercel](https://vercel.com) for free serverless hosting
- [GitHub Pages](https://pages.github.com) for static API hosting

## 📞 Support

- **Issues**: [GitHub Issues](https://github.com/leonurium/konoland-api/issues)
- **Discussions**: [GitHub Discussions](https://github.com/leonurium/konoland-api/discussions)

---

Made with ❤️ for the Indonesian developer community

**Konoha Land API** - Free Indonesian Administrative Regions API

⭐ Star this repo if you find it useful!

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