#!/bin/bash

# MeshVPN Server Setup Script
# This script installs Go, Redis, PostgreSQL, and configures the firewall.

set -e

echo "🚀 Starting MeshVPN Coordinator Setup..."

# 1. Update System
sudo apt-get update

# 2. Install Dependencies
echo "📦 Installing system dependencies..."
sudo apt-get install -y golang-go redis-server postgresql postgresql-contrib ufw curl git

# 3. Configure PostgreSQL
echo "🐘 Configuring PostgreSQL..."
sudo systemctl start postgresql
sudo systemctl enable postgresql
# Create database and user (Simplified for setup)
sudo -u postgres psql -c "CREATE USER meshvpn WITH PASSWORD 'password';" || echo "User already exists"
sudo -u postgres psql -c "CREATE DATABASE meshvpn OWNER meshvpn;" || echo "DB already exists"

# 4. Configure Redis
echo "⚡ Configuring Redis..."
sudo systemctl start redis-server
sudo systemctl enable redis-server

# 5. Firewall Configuration (UFW)
echo "🛡️ Configuring Firewall (UFW)..."
sudo ufw allow 22/tcp        # SSH
sudo ufw allow 3478/udp     # STUN
sudo ufw allow 50051/tcp    # Coordinator gRPC
sudo ufw --force enable

echo "-------------------------------------------------------"
echo "✅ Server Setup Complete!"
echo "Ports opened: 3478/UDP (STUN), 50051/TCP (Coordinator)"
echo "Redis and Postgres are running."
echo "Now navigate to /server and run: go run main.go"
echo "-------------------------------------------------------"