import { describe, it, expect } from 'vitest'
import { extractEditorBody } from './useEditorTabSwap'

describe('extractEditorBody', () => {
  it('strips frontmatter and title heading from new note content (double newline)', () => {
    const content = '---\ntitle: Untitled note\ntype: Note\nstatus: Active\n---\n\n# Untitled note\n\n'
    expect(extractEditorBody(content)).toBe('')
  })

  it('strips frontmatter and title heading from content with single newline', () => {
    const content = '---\ntitle: Test\n---\n# Test\n\nBody text here.'
    expect(extractEditorBody(content)).toBe('Body text here.')
  })

  it('preserves body content after the heading', () => {
    const content = '---\ntitle: My Note\ntype: Note\n---\n\n# My Note\n\nFirst paragraph.\n\nSecond paragraph.'
    expect(extractEditorBody(content)).toBe('First paragraph.\n\nSecond paragraph.')
  })

  it('handles content without frontmatter', () => {
    const content = '# Just a Heading\n\nSome body text.'
    expect(extractEditorBody(content)).toBe('Some body text.')
  })

  it('handles content without frontmatter or heading', () => {
    const content = 'Just plain text.'
    expect(extractEditorBody(content)).toBe('Just plain text.')
  })

  it('handles completely empty content', () => {
    expect(extractEditorBody('')).toBe('')
  })

  it('handles frontmatter-only content', () => {
    const content = '---\ntitle: Empty\n---\n'
    expect(extractEditorBody(content)).toBe('')
  })

  it('preserves wikilinks in body', () => {
    const content = '---\ntitle: Test\n---\n\n# Test\n\nSee [[Other Note]] for details.'
    expect(extractEditorBody(content)).toBe('See [[Other Note]] for details.')
  })

  it('does not strip heading that is not at the start of body', () => {
    const content = '---\ntitle: Test\n---\n\nSome intro text.\n\n# A Heading\n\nMore text.'
    expect(extractEditorBody(content)).toBe('Some intro text.\n\n# A Heading\n\nMore text.')
  })

  it('returns empty for buildNoteContent output', () => {
    // Exactly what buildNoteContent('My Project', 'Project', 'Active') produces
    const content = '---\ntitle: My Project\ntype: Project\nstatus: Active\n---\n\n# My Project\n\n'
    expect(extractEditorBody(content)).toBe('')
  })
})