#!/bin/bash

# Script to deploy generated nginx configurations to the server
# This script uses the configurations generated by generate-nginx-configs.sh

set -e

SERVER_IP="147.45.152.129"
SERVER_USER="root"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
CONFIG_DIR="$SCRIPT_DIR/generated_configs"

echo "🚀 Deploying nginx configurations to server..."
echo "Server: $SERVER_IP"
echo "Config directory: $CONFIG_DIR"
echo ""

# Check if config directory exists and has files
if [ ! -d "$CONFIG_DIR" ]; then
    echo "❌ Config directory not found: $CONFIG_DIR"
    echo "Run generate-nginx-configs.sh first"
    exit 1
fi

if [ ! "$(ls -A "$CONFIG_DIR"/*.conf 2>/dev/null)" ]; then
    echo "❌ No configuration files found in $CONFIG_DIR"
    echo "Run generate-nginx-configs.sh first"
    exit 1
fi

echo "📤 Uploading configurations..."
scp "$CONFIG_DIR"/*.conf "$SERVER_USER@$SERVER_IP:/tmp/"

echo ""
echo "⚙️  Installing configurations on server..."

ssh "$SERVER_USER@$SERVER_IP" << 'ENDSSH'
    set -e

    echo "🛑 Stopping nginx service..."
    systemctl stop nginx || true

    echo "🧹 Cleaning up old configurations..."
    rm -f /etc/nginx/sites-enabled/vscode*
    rm -f /etc/nginx/sites-enabled/forgejo*
    rm -f /etc/nginx/sites-enabled/code*
    rm -f /etc/nginx/sites-enabled/mnemo*

    echo "🧹 Killing any orphaned nginx processes..."
    pkill -9 nginx 2>/dev/null || true
    sleep 2

    echo "📋 Installing new configurations..."
    mv /tmp/vscode.mnemo-cards.online.conf /etc/nginx/sites-available/ 2>/dev/null || true
    mv /tmp/code.mnemo-cards.online.conf /etc/nginx/sites-available/ 2>/dev/null || true
    mv /tmp/mnemo-cards.online.conf /etc/nginx/sites-available/ 2>/dev/null || true

    echo "🔗 Creating symbolic links..."
    ln -sf /etc/nginx/sites-available/vscode.mnemo-cards.online.conf /etc/nginx/sites-enabled/ 2>/dev/null || true
    ln -sf /etc/nginx/sites-available/code.mnemo-cards.online.conf /etc/nginx/sites-enabled/ 2>/dev/null || true
    ln -sf /etc/nginx/sites-available/mnemo-cards.online.conf /etc/nginx/sites-enabled/ 2>/dev/null || true

    echo "✅ Configurations installed"

    echo ""
    echo "📊 Validating configuration..."
    if /usr/sbin/nginx -t; then
        echo "✅ Configuration syntax is valid"
    else
        echo "❌ Configuration syntax error!"
        echo "Checking configuration files..."

        for config in /etc/nginx/sites-enabled/*; do
            echo "Testing $(basename "$config")..."
            if ! /usr/sbin/nginx -t -c /etc/nginx/nginx.conf 2>&1 | grep -q "$(basename "$config")"; then
                echo "  ❌ Error in $(basename "$config")"
                head -20 "$config"
            fi
        done

        echo "Restoring basic configuration..."
        # Create minimal working config
        cat > /etc/nginx/sites-available/emergency.conf << 'EMERGENCY'
server {
    listen 80;
    server_name _;
    return 200 "nginx emergency mode\n";
    access_log off;
}
EMERGENCY
        ln -sf /etc/nginx/sites-available/emergency.conf /etc/nginx/sites-enabled/
        systemctl start nginx
        echo "Emergency configuration activated"
        exit 1
    fi

    echo ""
    echo "🔄 Starting nginx service..."
    if systemctl start nginx; then
        echo "✅ nginx started successfully"
    else
        echo "❌ nginx failed to start!"
        systemctl status nginx --no-pager
        exit 1
    fi

    echo ""
    echo "📊 Verifying services are accessible..."

    # Test each service
    SERVICES=(
        "mnemo-cards.online:80:301"  # Should redirect to HTTPS
        "code.mnemo-cards.online:80:301"
        "vscode.mnemo-cards.online:80:301"
    )

    for service in "${SERVICES[@]}"; do
        DOMAIN=$(echo "$service" | cut -d: -f1)
        PORT=$(echo "$service" | cut -d: -f2)
        EXPECTED_CODE=$(echo "$service" | cut -d: -f3)

        if curl -I --max-time 5 "http://$DOMAIN:$PORT/" 2>/dev/null | grep -q "HTTP/1.1 $EXPECTED_CODE"; then
            echo "✅ $DOMAIN redirects correctly"
        else
            echo "⚠️  $DOMAIN not responding as expected"
        fi
    done

ENDSSH

echo ""
echo "✅ Deployment completed!"
echo ""
echo "🌐 Services should be accessible at:"
echo "   https://mnemo-cards.online/ (main web app)"
echo "   https://code.mnemo-cards.online/ (Forgejo)"
echo "   https://vscode.mnemo-cards.online/ (VSCode Server)"
echo ""
echo "🔧 To check status: ./check-nginx.sh"
echo "🔧 To regenerate configs: ./generate-nginx-configs.sh"