import { describe, it, expect } from 'vitest'
import { DatabaseSync } from 'node:sqlite'
import { migrate } from '../../src/main/db/migrate'
import { AiSessionRepository } from '../../src/main/db/repositories/ai-session.repo'
import { InteractiveRepository } from '../../src/main/db/repositories/interactive.repo'
import { AutoWritingService } from '../../src/main/services/auto-writing.service'
import { AiClientService } from '../../src/main/services/ai-client.service'
import { DEFAULT_AI_CONFIG } from '../../src/shared/types'

const AI_TEST_CONFIG = { ...DEFAULT_AI_CONFIG, timeoutMs: 240_000, maxTokens: 4096 }
const CONTEXT = '林远站在演武场中央，众人目光汇聚，等待入门考核开始。'

describe('AutoWritingService generate', () => {
  const service = (db: DatabaseSync) =>
    new AutoWritingService(db, new AiClientService(() => AI_TEST_CONFIG))

  async function planFirstScene(db: DatabaseSync, svc: AutoWritingService, flowId: string): Promise<void> {
    await svc.planScenes(flowId, CONTEXT)
  }

  it('IT-AUTO-02: generateNext writes non-empty scene', async () => {
    const db = new DatabaseSync(':memory:')
    migrate(db)
    const session = new AiSessionRepository(db).create('t', DEFAULT_AI_CONFIG.model)
    const svc = service(db)
    const flow = svc.start(session.id)
    svc.setGoal(flow.id, {
      chapterGoal: '林远通过入门考核，展现天赋震惊众人',
      wordMin: 800,
      wordMax: 1500
    })
    await planFirstScene(db, svc, flow.id)

    let afterGen = await svc.generateNext(flow.id, CONTEXT, () => {})
    if (afterGen.step === 'naming_pause' && afterGen.namingPending) {
      afterGen = await svc.resolveNaming(
        flow.id,
        afterGen.namingPending.options[0]!,
        CONTEXT,
        () => {}
      )
    }

    const scenes = new InteractiveRepository(db).listScenes(flow.id)
    expect(scenes.length).toBeGreaterThanOrEqual(1)
    expect(scenes[0]!.contentHtml.replace(/<[^>]+>/g, '').trim().length).toBeGreaterThan(20)
    db.close()
  }, 240_000)

  it('IT-AUTO-03: pause and resume update step', async () => {
    const db = new DatabaseSync(':memory:')
    migrate(db)
    const session = new AiSessionRepository(db).create('t', DEFAULT_AI_CONFIG.model)
    const svc = service(db)
    const flow = svc.start(session.id)
    svc.setGoal(flow.id, {
      chapterGoal: '林远通过入门考核',
      wordMin: 800,
      wordMax: 1500
    })
    await planFirstScene(db, svc, flow.id)

    const paused = svc.pause(flow.id)
    expect(paused.step).toBe('paused')

    const resumed = svc.resume(flow.id)
    expect(resumed.step).toBe('auto_generate')
    db.close()
  }, 240_000)
})