#!/bin/bash
#
# Check Visual Workflow Builder Backend Server Status
#
# This script checks if the server is running and displays status information
#

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PID_FILE="$SCRIPT_DIR/.server.pid"
LOG_FILE="$SCRIPT_DIR/server.log"

# Colors for output
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

echo "=========================================="
echo "Visual Workflow Builder - Server Status"
echo "=========================================="

# Check PID file
if [ -f "$PID_FILE" ]; then
    PID=$(cat "$PID_FILE")
    echo -e "${BLUE}PID File:${NC} $PID_FILE"
    echo -e "${BLUE}PID:${NC} $PID"
    
    # Check if process is running
    if ps -p $PID > /dev/null 2>&1; then
        echo -e "${GREEN}Status: RUNNING ✓${NC}"
        
        # Get process info
        echo ""
        echo "Process Information:"
        ps -p $PID -o pid,ppid,user,%cpu,%mem,etime,command
        
    else
        echo -e "${RED}Status: NOT RUNNING (stale PID file)${NC}"
        echo "The PID file exists but the process is not running"
    fi
else
    echo -e "${YELLOW}PID File: Not found${NC}"
    echo -e "${RED}Status: NOT RUNNING${NC}"
fi

# Check port 5001
echo ""
echo "Port 5001 Status:"
PORT_CHECK=$(lsof -ti:5001 2>/dev/null)
if [ -z "$PORT_CHECK" ]; then
    echo -e "${RED}  Port 5001: FREE${NC}"
else
    echo -e "${GREEN}  Port 5001: IN USE${NC}"
    echo "  Process(es) using port 5001:"
    lsof -i:5001 | grep -v COMMAND
fi

# Check if server responds
echo ""
echo "Health Check:"
if command -v curl &> /dev/null; then
    HEALTH_RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:5001/health 2>/dev/null)
    if [ "$HEALTH_RESPONSE" = "200" ]; then
        echo -e "${GREEN}  HTTP Response: 200 OK ✓${NC}"
        echo "  Server is responding correctly"
    else
        echo -e "${RED}  HTTP Response: $HEALTH_RESPONSE${NC}"
        echo "  Server is not responding"
    fi
else
    echo -e "${YELLOW}  curl not available, skipping health check${NC}"
fi

# Show recent log entries if log file exists
if [ -f "$LOG_FILE" ]; then
    echo ""
    echo "Recent Log Entries (last 10 lines):"
    echo "-----------------------------------"
    tail -n 10 "$LOG_FILE"
fi

echo ""
echo "=========================================="