import { describe, it, expect } from 'vitest'
import { existsSync, statSync } from 'node:fs'
import { fileURLToPath } from 'node:url'
import { dirname, join } from 'node:path'

// Regression guard: the `useAria2c` setting was a silent no-op because aria2c.exe
// was never bundled — download.ts gates the --downloader flag on the file existing
// (existsSync(getAria2cPath())), so with no binary the toggle did nothing. This
// asserts the binary ships in resources/bin (where getBinDir/getAria2cPath resolve
// it, and where electron-builder's extraResources copies it into packaged builds).

const repoRoot = join(dirname(fileURLToPath(import.meta.url)), '..')
const aria2cPath = join(repoRoot, 'resources', 'bin', 'aria2c.exe')

describe('bundled aria2c', () => {
  it('ships aria2c.exe in resources/bin', () => {
    expect(existsSync(aria2cPath)).toBe(true)
  })

  it('is a real executable, not an empty or git-lfs pointer placeholder', () => {
    // The real binary is ~5.6 MB; a pointer/placeholder would be a few hundred
    // bytes. 1 MB is a comfortable floor that catches either failure mode.
    expect(statSync(aria2cPath).size).toBeGreaterThan(1_000_000)
  })
})