import ErrorResponse from '../utils/errorResponse.js'

const errorHandler = (err, req, res, next) => {
  let error = { ...err }
  error.message = err.message
  console.log(err.stack.red)

  //Mongoose bad ObjectId
  if (err.name === 'CastError') {
    const message = `Resource not found${typeof(err.value) === 'string' ? ` with id of ${err.value}` : ''}`
    error = new ErrorResponse(message, 404)
  }

  //Mongoose duplicate key
  if (err.code === 11000) {
    const message = `Duplicate field value entered`
    error = new ErrorResponse(message, 400)
  }

  //Mongoose validation error
  if(err.name === 'ValidationError') {
    const message = Object.values(err.errors).map(val => val.message)
    error = new ErrorResponse(message, 400)
  }
  res.status(error.statusCode || 500).json({
    success: false,
    error: error.message || 'Server Error',
  })
}

export default errorHandler