#!/bin/bash

# YouTube Summarizer Backend Restart Script
# Kills existing backend server and starts a new one

echo "🔄 Restarting YouTube Summarizer Backend..."

# Kill any existing backend processes
echo "🛑 Stopping existing backend processes..."

# Kill processes on backend port range (8000-8010)
for port in {8000..8010}; do
    lsof -ti :$port | xargs -r kill -9 2>/dev/null && echo "  Killed process on port $port"
done

# Also kill by process name patterns
pkill -f "backend/main.py" 2>/dev/null || true
pkill -f "python.*backend.*main.py" 2>/dev/null || true
pkill -f "python3.*backend.*main.py" 2>/dev/null || true
pkill -f "uvicorn.*main:app" 2>/dev/null || true

# Check if any processes were found
if [ $? -eq 0 ]; then
    echo "  Stopped existing backend processes"
else
    echo "  No existing backend processes found"
fi

# Wait a moment for processes to terminate
sleep 2

# Start the backend server
echo "🚀 Starting backend server..."
cd "$(dirname "$0")/.." || exit 1

# Export PYTHONPATH and start backend
export PYTHONPATH="$(pwd)"
nohup python3.11 backend/main.py > logs/backend.log 2>&1 &
BACKEND_PID=$!

# Wait a moment and check if server started successfully
sleep 3

if ps -p $BACKEND_PID > /dev/null; then
    echo "✅ Backend server started successfully (PID: $BACKEND_PID)"
    echo "📊 Backend running on: http://localhost:8000"
    echo "📚 API docs available at: http://localhost:8000/docs"
    echo "📋 Logs: tail -f logs/backend.log"
else
    echo "❌ Backend server failed to start"
    echo "📋 Check logs: cat logs/backend.log"
    exit 1
fi