#!/bin/bash

echo "╔══════════════════════════════════════════════════════════════╗"
echo "║        MongoDB Connection Verification                       ║"
echo "╚══════════════════════════════════════════════════════════════╝"
echo ""

# 1. Check MongoDB Service
echo "[1/5] MongoDB Service Status"
if systemctl is-active --quiet mongod; then
    echo "  ✅ MongoDB service is running"
    UPTIME=$(systemctl show mongod --property=ActiveEnterTimestamp --value)
    echo "  📅 Uptime: $UPTIME"
else
    echo "  ❌ MongoDB service is NOT running"
    exit 1
fi
echo ""

# 2. Check MongoDB Port
echo "[2/5] MongoDB Network Binding"
if sudo ss -tulpn | grep -q 27017; then
    echo "  ✅ MongoDB listening on port 27017"
    BIND=$(sudo ss -tulpn | grep 27017 | awk '{print $5}')
    echo "  🔌 Binding: $BIND"
else
    echo "  ❌ MongoDB NOT listening on port 27017"
    exit 1
fi
echo ""

# 3. Test Direct Connection
echo "[3/5] Direct MongoDB Connection Test"
if mongosh --quiet --eval "db.version()" SkyArtShopDB >/dev/null 2>&1; then
    VERSION=$(mongosh --quiet --eval "db.version()" SkyArtShopDB 2>/dev/null)
    echo "  ✅ Can connect to MongoDB"
    echo "  📦 Version: $VERSION"
    
    COLLECTIONS=$(mongosh --quiet --eval "db.getCollectionNames().length" SkyArtShopDB 2>/dev/null)
    echo "  📚 Collections: $COLLECTIONS"
    
    PRODUCTS=$(mongosh --quiet --eval "db.Products.countDocuments()" SkyArtShopDB 2>/dev/null)
    echo "  🛍️  Products: $PRODUCTS"
else
    echo "  ❌ Cannot connect to MongoDB"
    exit 1
fi
echo ""

# 4. Check Application Configuration
echo "[4/5] Application MongoDB Configuration"
if [ -f /var/www/SkyArtShop/publish/appsettings.Production.json ]; then
    CONN_STRING=$(grep -A 1 "ConnectionString" /var/www/SkyArtShop/publish/appsettings.Production.json | grep -oP '(?<=": ")[^"]+')
    DB_NAME=$(grep -A 2 "MongoDB" /var/www/SkyArtShop/publish/appsettings.Production.json | grep "DatabaseName" | grep -oP '(?<=": ")[^"]+')
    
    echo "  ✅ Configuration file found"
    echo "  🔗 Connection: $CONN_STRING"
    echo "  💾 Database: $DB_NAME"
else
    echo "  ❌ Configuration file NOT found"
    exit 1
fi
echo ""

# 5. Test Website Data Retrieval
echo "[5/5] Website Data Retrieval Test"
PRODUCTS_ON_PAGE=$(curl -s https://skyarts.ddns.net/Shop 2>&1 | grep -c "product-card")
if [ "$PRODUCTS_ON_PAGE" -gt 0 ]; then
    echo "  ✅ Website retrieving data from MongoDB"
    echo "  📦 Products displayed: $PRODUCTS_ON_PAGE"
    
    # Test admin dashboard
    curl -c /tmp/mongo-test.txt -b /tmp/mongo-test.txt -X POST "https://skyarts.ddns.net/admin/login" \
      -H "Content-Type: application/x-www-form-urlencoded" \
      -d "email=admin@skyartshop.com&password=Admin123!" \
      -k -s -o /dev/null 2>&1
    
    if curl -b /tmp/mongo-test.txt "https://skyarts.ddns.net/admin/products" -k -s 2>&1 | grep -q "product"; then
        echo "  ✅ Admin backend accessing MongoDB"
    fi
    rm -f /tmp/mongo-test.txt
else
    echo "  ❌ Website NOT retrieving data"
fi
echo ""

# Summary
echo "╔══════════════════════════════════════════════════════════════╗"
echo "║                  ✅ CONNECTION VERIFIED                      ║"
echo "╚══════════════════════════════════════════════════════════════╝"
echo ""
echo "Architecture:"
echo "  🖥️  Linux Server:    $(hostname)"
echo "  🌐 Web Application:  ASP.NET Core 8.0 (localhost:5000)"
echo "  💾 MongoDB:          Local (127.0.0.1:27017)"
echo "  🔒 Nginx Proxy:      Public (skyarts.ddns.net:443)"
echo ""
echo "Data Flow:"
echo "  Browser → Nginx (SSL) → ASP.NET App → MongoDB"
echo "  (All running on the same Linux server)"
echo ""
echo "✅ Website is properly connected to MongoDB on this Linux server"
echo ""