#!/bin/bash
#
# Apache Setup Script for Oliver Metadata Tool
# Run once to configure Apache for the application
#
# Usage: sudo ./setup-apache.sh

set -e

# Colors
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[OK]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }

echo ""
echo "Oliver Metadata Tool - Apache Setup"
echo "===================================="
echo ""

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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
APACHE_CONFIG="/etc/apache2/sites-available/solventum-image-metadata.conf"

# -----------------------------------------------------------------------------
# Enable required Apache modules
# -----------------------------------------------------------------------------
log_info "Enabling Apache modules..."

sudo a2enmod proxy 2>/dev/null || log_warn "proxy already enabled"
sudo a2enmod proxy_http 2>/dev/null || log_warn "proxy_http already enabled"
sudo a2enmod headers 2>/dev/null || log_warn "headers already enabled"
sudo a2enmod rewrite 2>/dev/null || log_warn "rewrite already enabled"
sudo a2enmod ssl 2>/dev/null || log_warn "ssl already enabled"

log_success "Apache modules enabled"

# -----------------------------------------------------------------------------
# Copy Apache configuration
# -----------------------------------------------------------------------------
log_info "Installing Apache configuration..."

if [[ -f "$APACHE_CONFIG" ]]; then
    log_warn "Configuration already exists, creating backup..."
    sudo cp "$APACHE_CONFIG" "${APACHE_CONFIG}.backup.$(date +%Y%m%d-%H%M%S)"
fi

sudo cp "$SCRIPT_DIR/apache-config.conf" "$APACHE_CONFIG"

log_success "Configuration installed"

# -----------------------------------------------------------------------------
# Test Apache configuration
# -----------------------------------------------------------------------------
log_info "Testing Apache configuration..."

if sudo apache2ctl configtest; then
    log_success "Apache configuration is valid"
else
    echo "Apache configuration test failed!"
    echo "Fix errors and run: sudo apache2ctl configtest"
    exit 1
fi

# -----------------------------------------------------------------------------
# Enable site
# -----------------------------------------------------------------------------
log_info "Enabling site..."

sudo a2ensite solventum-image-metadata 2>/dev/null || log_warn "Site already enabled"

log_success "Site enabled"

# -----------------------------------------------------------------------------
# Reload Apache
# -----------------------------------------------------------------------------
log_info "Reloading Apache..."

sudo systemctl reload apache2 || {
    echo "Apache reload failed, trying restart..."
    sudo systemctl restart apache2
}

log_success "Apache reloaded"

# -----------------------------------------------------------------------------
# Summary
# -----------------------------------------------------------------------------
echo ""
echo "=============================================="
log_success "Apache setup complete!"
echo "=============================================="
echo ""

log_info "Configuration file: $APACHE_CONFIG"
log_info "Frontend path: /var/www/html/solventum-image-metadata"
echo ""

log_info "Next steps:"
echo "  1. Run: sudo ./deploy.sh"
echo "  2. Access: https://ai-sandbox.oliver.solutions/solventum-image-metadata/"
echo ""

log_info "Useful commands:"
echo "  Check config:    sudo apache2ctl configtest"
echo "  Reload Apache:   sudo systemctl reload apache2"
echo "  View logs:       sudo tail -f /var/log/apache2/solventum-image-metadata-error.log"
echo ""