import mongoose from 'mongoose';

let isConnected = false;

export const connectDB = async () => {
  if (isConnected) {
    return;
  }

  const MONGODB_URI =
    typeof useRuntimeConfig === 'function'
      ? useRuntimeConfig().mongodbUri
      : process.env.NUXT_MONGODB_URI || process.env.MONGODB_URI;

  try {
    await mongoose.connect(MONGODB_URI, {
      serverSelectionTimeoutMS: 5000,
    });
    isConnected = true;
    console.log('MongoDB connected successfully');
  } catch (error) {
    console.error('MongoDB connection error:', error);
    throw error;
  }
};

export default connectDB;