# AdGuard DNS Rewrite Sync Tool

This script synchronizes DNS rewrite rules between a local YAML configuration and an AdGuard Home instance using its REST API.

## Features

- Logs into AdGuard Home via its control API
- Loads desired DNS rewrite entries from a YAML file
- Retrieves current DNS rewrite rules from AdGuard
- Compares current vs. desired state and:
  - Adds new entries
  - Updates existing ones with changed IPs
  - Deletes entries no longer needed
- Merges local and remote rules and writes back to the YAML file

## Requirements

- Python 3.7+
- [`requests`](https://pypi.org/project/requests/)
- [`pyyaml`](https://pypi.org/project/PyYAML/)
- [`python-dotenv`](https://pypi.org/project/python-dotenv/)

Install dependencies:

```bash
pip install -r requirements.txt

## Configuration
Create a .env file in the same directory with the following variables:

```env
ADGUARD_URL=http://<adguard-host>:3000
ADGUARD_USER=admin
PASSWORD=yourpassword
YAML_FILE=rewrites.yaml
```

# YAML File Format
The YAML file should contain rewrite entries under the rewrites key:

```yaml
rewrites:
  - domain: "example.org"
    answer: "127.0.0.1"
  - domain: "another.example.org"
    answer: "192.168.1.1"
```

# Usage
Run the script:

```bash
python main.py
```