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

describe('TimelineService', () => {
  let db: SqliteDb
  let timeline: TimelineService

  beforeEach(() => {
    db = new DatabaseSync(':memory:')
    migrate(db)
    timeline = new TimelineService(db)
  })

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

  it('UT-TL-01: lists chapter entries sorted by story time', () => {
    const vol = new VolumeRepository(db).create('第一卷', 0)
    const chapters = new ChapterRepository(db)
    const ch1 = chapters.create(vol.id, '第一章', 0)
    chapters.update(ch1.id, { storyTime: '730' })
    const ch2 = chapters.create(vol.id, '第二章', 1)
    chapters.update(ch2.id, { storyTime: '750' })

    const list = timeline.list()
    expect(list.filter((e) => e.kind === 'chapter')).toHaveLength(2)
    expect(list[0]?.title).toBe('第一章')
    expect(list[1]?.title).toBe('第二章')
  })

  it('UT-TL-02: detects age regression conflict', () => {
    const vol = new VolumeRepository(db).create('第一卷', 0)
    const chapters = new ChapterRepository(db)
    const settings = new SettingRepository(db)
    const hero = settings.create('character', '林远')
    settings.update(hero.id, { properties: { birthDate: '700' } })

    const ch1 = chapters.create(vol.id, '第一章', 0)
    chapters.update(ch1.id, { storyTime: '730' })
    const ch2 = chapters.create(vol.id, '第二章', 1)
    chapters.update(ch2.id, { storyTime: '720' })

    const conflicts = timeline.detectConflicts()
    expect(conflicts).toHaveLength(1)
    expect(conflicts[0]?.chapterTitle).toBe('第二章')
    expect(conflicts[0]?.message).toContain('林远')
  })

  it('UT-TL-03: upserts manual timeline event', () => {
    const entry = timeline.upsertManual({ title: '大战', storyTime: '800' })
    expect(entry.kind).toBe('manual')
    expect(entry.title).toBe('大战')
    const list = timeline.list()
    expect(list.some((e) => e.id === entry.id)).toBe(true)
  })
})