#!/bin/bash

# LittleShop Deployment Script for Hostinger VPS
# This script installs LittleShop as a systemd service with localhost-only binding

set -e

echo "=== LittleShop Deployment Script ==="
echo

# Check if running as root
if [ "$EUID" -ne 0 ]; then
   echo "Please run as root (use sudo)"
   exit 1
fi

# Variables
APP_DIR="/opt/littleshop"
SERVICE_FILE="/etc/systemd/system/littleshop.service"
RUNTIME_VERSION="9.0"

echo "1. Checking .NET Runtime..."
if ! command -v dotnet &> /dev/null; then
    echo "   .NET Runtime not found. Installing..."
    # Add Microsoft package repository
    wget https://packages.microsoft.com/config/debian/13/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
    dpkg -i packages-microsoft-prod.deb
    rm packages-microsoft-prod.deb

    # Install .NET Runtime
    apt-get update
    apt-get install -y aspnetcore-runtime-$RUNTIME_VERSION
    echo "   .NET Runtime installed successfully"
else
    echo "   .NET Runtime already installed: $(dotnet --version)"
fi

echo
echo "2. Creating application directory..."
mkdir -p $APP_DIR
mkdir -p $APP_DIR/logs
mkdir -p $APP_DIR/uploads

echo
echo "3. Stopping existing service (if any)..."
if systemctl is-active --quiet littleshop; then
    systemctl stop littleshop
    echo "   Service stopped"
else
    echo "   No existing service found"
fi

echo
echo "4. Copying application files..."
cp -r ./* $APP_DIR/
chmod +x $APP_DIR/LittleShop

echo
echo "5. Setting up database..."
if [ ! -f "$APP_DIR/littleshop-production.db" ]; then
    echo "   Database will be created on first run"
else
    echo "   Existing database found, will be preserved"
fi

echo
echo "6. Setting permissions..."
chown -R www-data:www-data $APP_DIR
chmod 750 $APP_DIR
chmod -R 640 $APP_DIR/*
chmod 750 $APP_DIR/LittleShop
chmod -R 770 $APP_DIR/logs
chmod -R 770 $APP_DIR/uploads

echo
echo "7. Installing systemd service..."
cp $APP_DIR/littleshop.service $SERVICE_FILE
systemctl daemon-reload
systemctl enable littleshop

echo
echo "8. Starting service..."
systemctl start littleshop

echo
echo "9. Checking service status..."
sleep 3
if systemctl is-active --quiet littleshop; then
    echo "   ✓ Service is running"
    echo
    echo "=== Deployment Complete ==="
    echo
    echo "Service Status:"
    systemctl status littleshop --no-pager | head -n 10
    echo
    echo "Application is running on: http://127.0.0.1:5000"
    echo "Logs location: $APP_DIR/logs/"
    echo
    echo "Useful commands:"
    echo "  - Check status:  systemctl status littleshop"
    echo "  - View logs:     journalctl -u littleshop -f"
    echo "  - Restart:       systemctl restart littleshop"
    echo "  - Stop:          systemctl stop littleshop"
    echo
    echo "To test locally on the server:"
    echo "  curl http://127.0.0.1:5000/api/health"
else
    echo "   ✗ Service failed to start"
    echo "   Check logs with: journalctl -u littleshop -n 50"
    exit 1
fi

echo
echo "10. Testing health endpoint..."
sleep 2
if curl -s -o /dev/null -w "%{http_code}" http://127.0.0.1:5000/api/health | grep -q "200"; then
    echo "   ✓ Health check passed"
else
    echo "   ⚠ Health check failed or service still starting"
    echo "   Try again with: curl http://127.0.0.1:5000/api/health"
fi

echo
echo "=== Setup Complete ==="
echo
echo "IMPORTANT: Edit /opt/littleshop/appsettings.Localhost.json to configure:"
echo "  - JWT secret key"
echo "  - SilverPay API credentials"
echo "  - Royal Mail API credentials (if using)"
echo "  - WebPush VAPID keys (if using)"
echo
echo "After editing configuration, restart the service:"
echo "  systemctl restart littleshop"