#!/bin/bash

# SkyArtShop Cleanup and Verification Script
# This script removes temporary files, verifies system health, and displays performance metrics

echo "========================================"
echo "  SkyArtShop Cleanup & Verification"
echo "========================================"
echo ""

# Colors for output
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Step 1: Clean temporary files
echo -e "${YELLOW}[1/7] Cleaning temporary files...${NC}"
cd /var/www/SkyArtShop

# Remove backup files
find . -type f \( -name "*.bak" -o -name "*.old" -o -name "*.broken" -o -name "*.tmp" \) -delete 2>/dev/null
echo -e "${GREEN}✓ Temporary files removed${NC}"

# Remove empty directories
find . -type d -empty -delete 2>/dev/null
echo -e "${GREEN}✓ Empty directories removed${NC}"
echo ""

# Step 2: Clean build artifacts
echo -e "${YELLOW}[2/7] Cleaning build artifacts...${NC}"
rm -rf ./obj/Release/* 2>/dev/null
rm -rf ./bin/Release/* 2>/dev/null
echo -e "${GREEN}✓ Build artifacts cleaned${NC}"
echo ""

# Step 3: Check services
echo -e "${YELLOW}[3/7] Checking services status...${NC}"
SERVICES=("nginx" "mongod" "skyartshop")
ALL_RUNNING=true

for service in "${SERVICES[@]}"; do
    if systemctl is-active --quiet "$service"; then
        echo -e "${GREEN}✓ $service is running${NC}"
    else
        echo -e "${RED}✗ $service is not running${NC}"
        ALL_RUNNING=false
    fi
done
echo ""

# Step 4: Test website connectivity
echo -e "${YELLOW}[4/7] Testing website connectivity...${NC}"
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" http://localhost 2>/dev/null)
if [ "$HTTP_CODE" = "200" ]; then
    echo -e "${GREEN}✓ Website responding (HTTP $HTTP_CODE)${NC}"
else
    echo -e "${RED}✗ Website not responding (HTTP $HTTP_CODE)${NC}"
fi
echo ""

# Step 5: Check MongoDB
echo -e "${YELLOW}[5/7] Checking MongoDB connection...${NC}"
if mongosh --quiet --eval "db.adminCommand('ping').ok" SkyArtShopDB >/dev/null 2>&1; then
    echo -e "${GREEN}✓ MongoDB connected${NC}"
    
    # Get collection counts
    PRODUCTS=$(mongosh --quiet --eval "db.Products.countDocuments()" SkyArtShopDB 2>/dev/null)
    PAGES=$(mongosh --quiet --eval "db.Pages.countDocuments()" SkyArtShopDB 2>/dev/null)
    MENU_ITEMS=$(mongosh --quiet --eval "db.MenuItems.countDocuments()" SkyArtShopDB 2>/dev/null)
    ADMIN_USERS=$(mongosh --quiet --eval "db.AdminUsers.countDocuments()" SkyArtShopDB 2>/dev/null)
    
    echo "  - Products: $PRODUCTS"
    echo "  - Pages: $PAGES"
    echo "  - Menu Items: $MENU_ITEMS"
    echo "  - Admin Users: $ADMIN_USERS"
else
    echo -e "${RED}✗ MongoDB connection failed${NC}"
fi
echo ""

# Step 6: System resources
echo -e "${YELLOW}[6/7] System resources:${NC}"
echo "--- Memory ---"
free -h | grep "^Mem:" | awk '{print "  Used: " $3 " / " $2 " (" int($3/$2*100) "%)"}'
echo ""

echo "--- CPU ---"
CPU_COUNT=$(nproc)
CPU_LOAD=$(uptime | awk -F'load average:' '{print $2}' | cut -d, -f1)
echo "  Cores: $CPU_COUNT"
echo "  Load: $CPU_LOAD"
echo ""

echo "--- Disk ---"
df -h /var/www | tail -1 | awk '{print "  Used: " $3 " / " $2 " (" $5 ")"}'
echo ""

echo "--- Network Connections ---"
CONNECTIONS=$(ss -s | grep TCP: | awk '{print $4}')
echo "  Active TCP: $CONNECTIONS"
echo ""

# Step 7: Configuration verification
echo -e "${YELLOW}[7/7] Configuration verification:${NC}"

# Check Nginx config
if sudo nginx -t >/dev/null 2>&1; then
    echo -e "${GREEN}✓ Nginx configuration valid${NC}"
else
    echo -e "${RED}✗ Nginx configuration has errors${NC}"
fi

# Check file permissions
if [ -x "/var/www/SkyArtShop/publish/SkyArtShop.dll" ]; then
    echo -e "${GREEN}✓ Application files have correct permissions${NC}"
else
    echo -e "${RED}✗ Application files may have permission issues${NC}"
fi

# Check .NET runtime
if command -v dotnet &> /dev/null; then
    DOTNET_VERSION=$(dotnet --version)
    echo -e "${GREEN}✓ .NET runtime installed ($DOTNET_VERSION)${NC}"
else
    echo -e "${RED}✗ .NET runtime not found${NC}"
fi

echo ""
echo "========================================"
echo "  Verification Complete"
echo "========================================"
echo ""

# Final summary
if [ "$ALL_RUNNING" = true ] && [ "$HTTP_CODE" = "200" ]; then
    echo -e "${GREEN}✓ System is healthy and running optimally${NC}"
    echo ""
    echo "Access your website at:"
    echo "  - Local: http://localhost"
    echo "  - Domain: http://skyarts.ddns.net"
    echo ""
    echo "Admin Panel:"
    echo "  - URL: http://skyarts.ddns.net/admin"
    echo "  - User: admin@skyartshop.com"
    echo ""
    echo "For detailed performance info, see:"
    echo "  /var/www/SkyArtShop/PERFORMANCE_OPTIMIZATION.md"
    exit 0
else
    echo -e "${RED}⚠ System has issues that need attention${NC}"
    echo ""
    echo "Check logs with:"
    echo "  sudo journalctl -u skyartshop.service -n 50"
    echo "  sudo tail -f /var/log/nginx/error.log"
    exit 1
fi