This application acts as a middleman between a Pi-hole instance and a Home Assistant instance. It periodically queries Pi-hole for blocked DNS queries that match a user-defined list of strings. When a certain threshold of matches is met within a time frame, it triggers a specific Home Assistant automation.

Features

Polls Pi-hole for DNS queries.
Filters queries based on a list of strings.
Implements a "point" system for matched queries with a 5-minute expiration.
Triggers a Home Assistant automation when a point threshold is reached.

Prerequisites

Node.js (v14 or higher)
A running Pi-hole instance
A running Home Assistant instance

Installation

Clone this repository or download the source code.
Navigate to the project directory.
Install the dependencies:
```
npm install
```

Configuration

Rename config.json.example to config.json.
Edit config.json with your specific settings:
- pihole.host: The IP address of your Pi-hole.
- pihole.password: Your Pi-hole web interface password. This is required for Pi-hole v6 and newer. If your Pi-hole has no password, you can leave this as an empty string ("").
- homeAssistant.host: The IP address and port of your Home Assistant instance (e.g., 192.168.1.200:8123).
- homeAssistant.apiToken: Your Home Assistant Long-Lived Access Token.
- homeAssistant.automation: The entity ID of the Home Assistant automation to trigger.
- filter.strings: An array of strings to match against blocked DNS queries.
- pollingIntervalSeconds: The interval in seconds to poll Pi-hole.
- pointsThreshold: The number of points required to trigger the Home Assistant automation.
- notifications.discordWebhookUrl: (Optional) A Discord webhook URL to send messages to when a point is added. Leave empty or omit if not using Discord notifications.

Usage

To run the application:

node src/app.js

Logging

The application generates two log files:

error.log: Contains only error messages.
combined.log: Contains all log messages.