import { describe, expect, it } from 'vitest'
import { MAX_UPLOAD_BYTES } from '@/entities/file'
import nextConfig from '../next.config'

// The upload form posts to a server action, whose body Next caps at 1 MB unless
// configured (next.config `experimental.serverActions.bodySizeLimit`). The cap must
// admit the largest attachment the app accepts, plus multipart overhead.
function parseLimit(limit: string | number | undefined): number | undefined {
  if (typeof limit === 'number') return limit
  const match = /^(\d+)mb$/.exec(limit ?? '')
  return match ? Number(match[1]) * 1024 * 1024 : undefined
}

describe('next.config server action body limit', () => {
  it('admits the largest attachment the app accepts', () => {
    const limit = parseLimit(nextConfig.experimental?.serverActions?.bodySizeLimit)
    expect(limit).toBeGreaterThanOrEqual(MAX_UPLOAD_BYTES)
  })
})