import { randomBytes } from 'crypto'

export function generateTrackingCode(prefix: string, suffixLength: number) {
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
  const bytes = randomBytes(suffixLength)

  let suffix = ''
  for (let i = 0; i < suffixLength; i++) {
    suffix += chars[bytes[i] % chars.length]
  }

  return `${prefix}-${suffix}`
}

export function isTrackingCodeUniqueViolation(error: unknown) {
  const prismaError = error as {
    code?: string
    meta?: { target?: string[] | string }
  }

  if (prismaError?.code !== 'P2002') {
    return false
  }

  const target = prismaError.meta?.target
  if (Array.isArray(target)) {
    return target.includes('tracking_code')
  }

  if (typeof target === 'string') {
    return target.includes('tracking_code')
  }

  return true
}