import { describe, it, expect, beforeEach, afterEach } from 'vitest'
import { DatabaseSync } from 'node:sqlite'
import { migrate } from '../../src/main/db/migrate'
import { UndoStackService } from '../../src/main/services/undo-stack.service'
import { VolumeRepository } from '../../src/main/db/repositories/volume.repo'
import { ChapterRepository } from '../../src/main/db/repositories/chapter.repo'
import type { SqliteDb } from '../../src/main/db/types'

describe('UndoStackService', () => {
  let db: SqliteDb
  let svc: UndoStackService
  let chapterId: string

  beforeEach(() => {
    db = new DatabaseSync(':memory:')
    migrate(db)
    svc = new UndoStackService(db)
    const vol = new VolumeRepository(db).create('卷一', 0)
    chapterId = new ChapterRepository(db).create(vol.id, '第一章', 0).id
  })

  afterEach(() => {
    db.close()
  })

  it('UT-UNDO-01: push and list undo entries', () => {
    svc.push(chapterId, { type: 'doc', content: '<p>旧内容</p>' })
    svc.push(chapterId, { type: 'doc', content: '<p>新内容</p>' })
    const list = svc.list(chapterId)
    expect(list).toHaveLength(2)
    expect(list[0]?.operation.content).toContain('新内容')
  })
})