import { describe, expect, it } from 'vitest'

import { extractPreviewTargets, previewTargetFromMarkdownHref, stripPreviewTargets } from './preview-targets'

describe('preview target detection', () => {
  it('does not infer preview targets from raw paths or URLs', () => {
    expect(extractPreviewTargets('Preview: http://localhost:5173/')).toEqual([])
    expect(extractPreviewTargets('Open index.html\n/tmp/demo.html\nhttp://localhost:5173/')).toEqual([])
  })

  it('decodes preview markdown hrefs', () => {
    expect(previewTargetFromMarkdownHref('#preview/%2Ftmp%2Fdemo.html')).toBe('/tmp/demo.html')
    expect(previewTargetFromMarkdownHref('#preview:%2Ftmp%2Fdemo.html')).toBe('/tmp/demo.html')
    expect(previewTargetFromMarkdownHref('#media:%2Ftmp%2Fdemo.mp4')).toBeNull()
  })

  it('extracts preview targets from already-rendered preview markers', () => {
    expect(extractPreviewTargets('[Preview: demo.html](#preview:%2Ftmp%2Fdemo.html)')).toEqual(['/tmp/demo.html'])
  })

  it('strips preview targets from visible assistant text', () => {
    expect(stripPreviewTargets('ready\n/tmp/mycelium-bunnies.html\nopen it')).toBe(
      'ready\n/tmp/mycelium-bunnies.html\nopen it'
    )
    expect(stripPreviewTargets('[Preview: demo.html](#preview:%2Ftmp%2Fdemo.html)\nopen it')).toBe('open it')
  })
})