#!/bin/bash

# Gitea Webhook Ambassador Python Start Script

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
SERVICE_NAME="gitea-webhook-ambassador-python"
LOG_FILE="$SCRIPT_DIR/logs/service.log"
PID_FILE="$SCRIPT_DIR/service.pid"

# Create logs directory
mkdir -p "$SCRIPT_DIR/logs"

# Activate virtual environment
source "$SCRIPT_DIR/venv/bin/activate"

# Function: Start service
start_service() {
    echo "🚀 Starting $SERVICE_NAME..."
    
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p $PID > /dev/null 2>&1; then
            echo "❌ Service is already running (PID: $PID)"
            return 1
        else
            echo "⚠️  Found stale PID file, cleaning up..."
            rm -f "$PID_FILE"
        fi
    fi
    
    # Start service in background
    nohup python -m uvicorn app.main_demo:app --host 0.0.0.0 --port 8000 > "$LOG_FILE" 2>&1 &
    PID=$!
    echo $PID > "$PID_FILE"
    
    # Wait for service to start
    sleep 3
    
    if ps -p $PID > /dev/null 2>&1; then
        echo "✅ Service started successfully (PID: $PID)"
        echo "📝 Log file: $LOG_FILE"
        echo "🌐 Access: http://localhost:8000"
        echo "🔑 Demo keys: demo_admin_key, demo_user_key"
    else
        echo "❌ Service failed to start"
        rm -f "$PID_FILE"
        return 1
    fi
}

# Function: Stop service
stop_service() {
    echo "🛑 Stopping $SERVICE_NAME..."
    
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p $PID > /dev/null 2>&1; then
            kill $PID
            echo "✅ Service stopped (PID: $PID)"
        else
            echo "⚠️  Service not running"
        fi
        rm -f "$PID_FILE"
    else
        echo "⚠️  PID file does not exist"
    fi
}

# Function: Restart service
restart_service() {
    echo "🔄 Restarting $SERVICE_NAME..."
    stop_service
    sleep 2
    start_service
}

# Function: Show status
status_service() {
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p $PID > /dev/null 2>&1; then
            echo "✅ $SERVICE_NAME is running (PID: $PID)"
            echo "📝 Log file: $LOG_FILE"
            echo "🌐 Access: http://localhost:8000"
        else
            echo "❌ $SERVICE_NAME is not running (PID file exists but process not found)"
            rm -f "$PID_FILE"
        fi
    else
        echo "❌ $SERVICE_NAME is not running"
    fi
}

# Function: Show logs
show_logs() {
    if [ -f "$LOG_FILE" ]; then
        echo "📝 Showing latest logs (last 50 lines):"
        echo "----------------------------------------"
        tail -n 50 "$LOG_FILE"
        echo "----------------------------------------"
        echo "Full log file: $LOG_FILE"
    else
        echo "❌ Log file does not exist"
    fi
}

# Function: Follow logs
follow_logs() {
    if [ -f "$LOG_FILE" ]; then
        echo "📝 Real-time logs (Ctrl+C to exit):"
        tail -f "$LOG_FILE"
    else
        echo "❌ Log file does not exist"
    fi
}

# Main logic
case "$1" in
    start)
        start_service
        ;;
    stop)
        stop_service
        ;;
    restart)
        restart_service
        ;;
    status)
        status_service
        ;;
    logs)
        show_logs
        ;;
    follow)
        follow_logs
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|status|logs|follow}"
        echo ""
        echo "Command description:"
        echo "  start   - Start service"
        echo "  stop    - Stop service"
        echo "  restart - Restart service"
        echo "  status  - Show service status"
        echo "  logs    - Show latest logs"
        echo "  follow  - Show real-time logs"
        echo ""
        echo "Examples:"
        echo "  $0 start    # Start service"
        echo "  $0 status   # Show status"
        echo "  $0 logs     # Show logs"
        exit 1
        ;;
esac