plspace/src/lib/util/flash.test.ts

import { describe, expect, it } from 'vitest'
import type { MediaAttachment } from '$lib/api/types'
import { flashAspectRatio, isFlashAttachment } from './flash'

function attachment(overrides: Partial<MediaAttachment> = {}): MediaAttachment {
  return {
    id: 'file-1',
    type: 'unknown',
    url: 'https://media.example.test/file.bin',
    preview_url: null,
    ...overrides,
  }
}

describe('Flash attachment detection', () => {
  it('recognizes Pleroma MIME metadata and explicit Flash types', () => {
    expect(
      isFlashAttachment(
        attachment({ pleroma: { mime_type: 'application/x-shockwave-flash' } }),
      ),
    ).toBe(true)
    expect(isFlashAttachment(attachment({ type: 'flash' }))).toBe(true)
  })

  it('recognizes case-insensitive SWF paths despite query strings or fragments', () => {
    expect(
      isFlashAttachment(
        attachment({ url: 'https://media.example.test/games/MOVIE.SWF?download=1#play' }),
      ),
    ).toBe(true)
    expect(
      isFlashAttachment(attachment({ url: 'https://media.example.test/movie.swf.png' })),
    ).toBe(false)
  })

  it('uses bounded intrinsic dimensions and a safe fallback', () => {
    expect(
      flashAspectRatio(
        attachment({ meta: { original: { width: 1920, height: 1080 } } }),
      ),
    ).toBeCloseTo(16 / 9)
    expect(
      flashAspectRatio(attachment({ meta: { original: { width: 10000, height: 1 } } })),
    ).toBeCloseTo(4 / 3)
  })
})