#!/bin/bash
# Audiobook Player - Start Script

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PID_FILE="$SCRIPT_DIR/app.pid"
PORT=5000

show_help() {
    echo "📚 Audiobook Player"
    echo ""
    echo "Usage:"
    echo "  ./start.sh start          # Start server (foreground)"
    echo "  ./start.sh start-bg       # Start server (background)"
    echo "  ./start.sh stop           # Stop server"
    echo "  ./start.sh status         # Check status"
    echo "  ./start.sh restart        # Restart server"
    echo ""
    echo "URLs:"
    echo "  Local:  http://localhost:$PORT"
    echo "  Public: http://$(curl -s ifconfig.me 2>/dev/null || echo 'YOUR_IP'):$PORT"
}

check_requirements() {
    python3 -c "import flask, edge_tts" 2>/dev/null
    if [ $? -ne 0 ]; then
        echo "Installing requirements..."
        pip3 install -r "$SCRIPT_DIR/requirements.txt"
    fi
}

start_server() {
    check_requirements
    
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p "$PID" > /dev/null 2>&1; then
            echo "⚠️  Server already running (PID: $PID)"
            echo "   Visit: http://localhost:$PORT"
            return
        fi
    fi
    
    echo "🚀 Starting Audiobook Player..."
    echo "   Port: $PORT"
    echo ""
    
    cd "$SCRIPT_DIR"
    python3 app.py &
    
    # Save PID
    echo $! > "$PID_FILE"
    
    sleep 2
    
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p "$PID" > /dev/null 2>&1; then
            echo "✅ Server started (PID: $PID)"
            echo ""
            echo "📱 Access URLs:"
            echo "   Local:  http://localhost:$PORT"
            PUBLIC_IP=$(curl -s ifconfig.me 2>/dev/null)
            if [ -n "$PUBLIC_IP" ]; then
                echo "   Public: http://$PUBLIC_IP:$PORT"
            fi
        fi
    fi
}

start_bg() {
    check_requirements
    
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p "$PID" > /dev/null 2>&1; then
            echo "⚠️  Server already running (PID: $PID)"
            return
        fi
    fi
    
    echo "🚀 Starting Audiobook Player in background..."
    
    cd "$SCRIPT_DIR"
    nohup python3 app.py > "$SCRIPT_DIR/server.log" 2>&1 &
    echo $! > "$PID_FILE"
    
    sleep 2
    
    PID=$(cat "$PID_FILE")
    if ps -p "$PID" > /dev/null 2>&1; then
        echo "✅ Server started (PID: $PID)"
        echo ""
        echo "📱 Access URLs:"
        PUBLIC_IP=$(curl -s ifconfig.me 2>/dev/null)
        if [ -n "$PUBLIC_IP" ]; then
            echo "   http://$PUBLIC_IP:$PORT"
        fi
        echo "   http://localhost:$PORT"
        echo ""
        echo "Logs: tail -f $SCRIPT_DIR/server.log"
    fi
}

stop_server() {
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p "$PID" > /dev/null 2>&1; then
            echo "⏹️  Stopping server (PID: $PID)..."
            kill "$PID"
            rm -f "$PID_FILE"
            echo "✅ Server stopped"
        else
            echo "⚠️  Server not running"
            rm -f "$PID_FILE"
        fi
    else
        # Try to find and kill by port
        PID=$(lsof -ti:$PORT 2>/dev/null)
        if [ -n "$PID" ]; then
            echo "⏹️  Stopping server (PID: $PID)..."
            kill "$PID" 2>/dev/null
            echo "✅ Server stopped"
        else
            echo "⚠️  Server not running"
        fi
    fi
}

show_status() {
    if [ -f "$PID_FILE" ]; then
        PID=$(cat "$PID_FILE")
        if ps -p "$PID" > /dev/null 2>&1; then
            echo "✅ Server is running (PID: $PID)"
            echo "   Port: $PORT"
            echo ""
            echo "📱 Access URLs:"
            echo "   http://localhost:$PORT"
            PUBLIC_IP=$(curl -s ifconfig.me 2>/dev/null)
            if [ -n "$PUBLIC_IP" ]; then
                echo "   http://$PUBLIC_IP:$PORT"
            fi
        else
            echo "⏹️  Server not running (stale PID file)"
            rm -f "$PID_FILE"
        fi
    else
        PID=$(lsof -ti:$PORT 2>/dev/null)
        if [ -n "$PID" ]; then
            echo "✅ Server is running (PID: $PID)"
        else
            echo "⏹️  Server not running"
        fi
    fi
}

case "${1:-help}" in
    start)
        start_server
        ;;
    start-bg|bg)
        start_bg
        ;;
    stop)
        stop_server
        ;;
    status)
        show_status
        ;;
    restart)
        stop_server
        sleep 2
        start_bg
        ;;
    help|--help|-h)
        show_help
        ;;
    *)
        echo "❌ Unknown command: $1"
        show_help
        exit 1
        ;;
esac