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 { KnowledgeRepository } from '../../src/main/db/repositories/knowledge.repo'
import { KnowledgeRetrievalService } from '../../src/main/services/knowledge-retrieval.service'
import { InteractiveWritingService } from '../../src/main/services/interactive-writing.service'
import { AiClientService } from '../../src/main/services/ai-client.service'
import { BookRegistryService } from '../../src/main/services/book-registry'
import { aiContextBuilder } from '../../src/main/services/ai-context-builder.service'
import { DEFAULT_AI_CONFIG, type AiContextBinding } from '../../src/shared/types'
import { mkdtempSync, rmSync } from 'fs'
import { join } from 'path'
import { tmpdir } from 'os'

const AI_TEST_CONFIG = { ...DEFAULT_AI_CONFIG, timeoutMs: 240_000, maxTokens: 4096 }

const EMPTY_BINDING: AiContextBinding = {
  chapterIds: [],
  outlineIds: [],
  settingIds: [],
  inspirationIds: [],
  knowledgeIds: []
}

describe('AI context integration', () => {
  it('IT-CTX-01: suggestContext returns entries when approved exist', () => {
    const db = new DatabaseSync(':memory:')
    migrate(db)
    new KnowledgeRepository(db).create({
      type: 'fact',
      title: '测灵石异常',
      content: '石头发热',
      status: 'approved',
      importance: 4
    })
    const result = new KnowledgeRetrievalService(db).suggest({ topN: 5 })
    expect(result.length).toBeGreaterThanOrEqual(1)
    expect(result[0].entry.title).toBe('测灵石异常')
    db.close()
  })

  it('IT-CTX-02: build with knowledgeIds includes knowledge block in systemPrompt', () => {
    const userDir = mkdtempSync(join(tmpdir(), 'bilin-ctx-it-'))
    const registry = new BookRegistryService(userDir)
    const meta = registry.create({ name: '测试书', category: '玄幻' })
    const bookDb = registry.getDb(meta.id)
    const entry = new KnowledgeRepository(bookDb).create({
      type: 'foreshadow',
      title: '测灵石',
      content: '石头发热',
      status: 'approved'
    })
    const result = aiContextBuilder.build(
      { ...EMPTY_BINDING, knowledgeIds: [entry.id] },
      registry,
      meta.id,
      '作者'
    )
    expect(result.preview.some((p) => p.kind === 'knowledge')).toBe(true)
    expect(result.systemPrompt).toContain('【知识·')
    bookDb.close()
    rmSync(userDir, { recursive: true, force: true })
  })

  it('IT-CTX-03: interactive confirm then suggestPlots uses knowledge context', async () => {
    const db = new DatabaseSync(':memory:')
    migrate(db)
    const session = new AiSessionRepository(db).create('t', AI_TEST_CONFIG.model)
    const know = new KnowledgeRepository(db).create({
      type: 'foreshadow',
      title: '测灵石异常',
      content: '入门考核时测灵石发热，暗示主角特殊灵根',
      status: 'approved',
      importance: 5
    })
    const service = new InteractiveWritingService(db, new AiClientService(() => AI_TEST_CONFIG))
    const flow = service.start(session.id)
    service.confirmContext(flow.id, {
      binding: { ...EMPTY_BINDING, knowledgeIds: [know.id] },
      systemPrompt: `【知识·伏笔·测灵石异常】入门考核时测灵石发热，暗示主角特殊灵根\n\n林远参加宗门入门考核，演武场测灵石前众人围观。`,
      contextSummary: '0章·0纲·0设·0感·1知'
    })
    const plots = await service.suggestPlots(flow.id)
    expect(plots).toHaveLength(3)
    db.close()
  }, 240_000)
})