# Database Schema

## Table: logs
- timestamp: TEXT
- hostname: TEXT
- ip_address: TEXT
- message: TEXT

## Table: boards
- hostname: TEXT PRIMARY KEY
- ip_address: TEXT
- input1: TEXT
- input2: TEXT
- input3: TEXT
- input4: TEXT
- relay1: TEXT
- relay2: TEXT
- relay3: TEXT
- relay4: TEXT

# Explanation of Functions in app.py

## Function: init_db
- Initializes the SQLite database.
- Creates two tables: logs and boards.
- The logs table stores log entries with timestamp, hostname, IP address, and message.
- The boards table stores the status of each board with hostname, IP address, and status of inputs and relays.

## Function: log
- Endpoint: /log
- Method: POST
- Receives log messages from the ESP board.
- Extracts hostname, IP address, and message from the JSON payload.
- Prints the hostname, IP address, and message.
- Updates the status of inputs and relays based on the message.
- Records the log in the logs table.
- Updates the board status in the boards table.

## Function: control
- Endpoint: /control
- Method: POST
- Receives control commands to update the status of relays.
- Extracts the relay status from the JSON payload.
- Prints the new relay status.
- Updates the status of the relays.