import { describe, expect, test } from 'bun:test'
import {
  computeIsDirty,
  createQuickNoteModalState,
  markSaveFailed,
  markSaveSucceeded,
  updateDraftContent,
} from './quick-note-modal-state'

describe('quick-note modal state', () => {
  test('draft differs from saved => dirty', () => {
    expect(computeIsDirty({ savedContent: 'a', draftContent: 'b' })).toBe(true)
    expect(computeIsDirty({ savedContent: 'a', draftContent: 'a' })).toBe(false)
  })

  test('saving success marks state clean', () => {
    const initial = createQuickNoteModalState('hello')
    const editing = updateDraftContent(initial, 'hello world')
    expect(editing.isDirty).toBe(true)

    const saved = markSaveSucceeded(editing)
    expect(saved.savedContent).toBe('hello world')
    expect(saved.draftContent).toBe('hello world')
    expect(saved.isDirty).toBe(false)
    expect(saved.lastSaveFailed).toBe(false)
  })

  test('saving failure keeps draft dirty', () => {
    const initial = createQuickNoteModalState('hello')
    const editing = updateDraftContent(initial, 'draft changed')
    const failed = markSaveFailed(editing)

    expect(failed.savedContent).toBe('hello')
    expect(failed.draftContent).toBe('draft changed')
    expect(failed.isDirty).toBe(true)
    expect(failed.lastSaveFailed).toBe(true)
  })

  test('input after failed save resets lastSaveFailed', () => {
    const initial = createQuickNoteModalState('hello')
    const editing = updateDraftContent(initial, 'draft changed')
    const failed = markSaveFailed(editing)
    expect(failed.lastSaveFailed).toBe(true)

    const editedAgain = updateDraftContent(failed, 'draft changed again')
    expect(editedAgain.lastSaveFailed).toBe(false)
    expect(editedAgain.isDirty).toBe(true)
  })

  test('save success after a failure clears lastSaveFailed', () => {
    const initial = createQuickNoteModalState('hello')
    const failed = markSaveFailed(updateDraftContent(initial, 'draft changed'))
    const saved = markSaveSucceeded(failed)

    expect(saved.lastSaveFailed).toBe(false)
    expect(saved.isDirty).toBe(false)
  })
})