import { mkdtempSync, rmSync, existsSync } from 'fs'
import { join } from 'path'
import { tmpdir } from 'os'
import { test, expect } from '@playwright/test'
import {
  launchApp,
  skipOnboarding,
  createBookAndOpenEditor,
  ensureChapterEditor,
  dismissCockpitIfOpen,
  addCharacterSetting,
  openCharacterSetting
} from './helpers'

async function openChapterByIndex(page: import('@playwright/test').Page, index = 0): Promise<void> {
  await page.getByTestId('sidebar-tab-chapters').click()
  await page.getByTestId(/^chapter-item-/).nth(index).click()
  await expect(page.getByTestId('chapter-meta-open')).toBeVisible({ timeout: 10_000 })
}

async function setChapterStoryTime(
  page: import('@playwright/test').Page,
  storyTime: string,
  chapterIndex = 0
): Promise<void> {
  await openChapterByIndex(page, chapterIndex)
  await page.getByTestId('chapter-meta-open').click()
  await expect(page.getByTestId('chapter-meta-panel')).toBeVisible({ timeout: 10_000 })
  await page.getByTestId('chapter-meta-story-time').fill(storyTime)
  await page.getByTestId('chapter-meta-save').click()
  await expect(page.getByTestId('chapter-meta-panel')).toBeHidden({ timeout: 10_000 })
}

test.describe('Story timeline', () => {
  let userDataDir: string

  test.beforeEach(() => {
    userDataDir = mkdtempSync(join(tmpdir(), 'bilin-e2e-timeline-'))
  })

  test.afterEach(() => {
    if (userDataDir && existsSync(userDataDir)) {
      try {
        rmSync(userDataDir, { recursive: true, force: true, maxRetries: 3, retryDelay: 200 })
      } catch {
        /* ignore */
      }
    }
  })

  test('E2E-TL-01: open story timeline lists chapters', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createBookAndOpenEditor(page, '时间线测试书')
    await dismissCockpitIfOpen(page)
    await ensureChapterEditor(page)
    await setChapterStoryTime(page, '730')

    await page.getByTestId('open-timeline').click()
    await expect(page.getByTestId('timeline-modal')).toBeVisible({ timeout: 10_000 })
    await expect(page.getByTestId('timeline-list')).toContainText('730')

    await app.close()
  })

  test('E2E-TL-02: character birth year and chapter times show in timeline', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createBookAndOpenEditor(page, '角色年龄测试')
    await dismissCockpitIfOpen(page)
    await ensureChapterEditor(page)

    await addCharacterSetting(page, '林远')
    await openCharacterSetting(page, '林远')
    await expect(page.getByTestId('character-arc-panel')).toBeVisible({ timeout: 15_000 })
    await page.getByTestId('character-birth-date').fill('700')
    await page.getByRole('button', { name: '保存' }).click()

    await page.getByTestId('sidebar-tab-chapters').click()
    await openChapterByIndex(page, 0)
    await setChapterStoryTime(page, '710', 0)

    await page.getByRole('button', { name: '+ 新章' }).click()
    await expect(page.locator('.ProseMirror')).toBeVisible({ timeout: 10_000 })
    await setChapterStoryTime(page, '730', 1)

    await page.getByTestId('open-timeline').click()
    await expect(page.getByTestId('timeline-modal')).toBeVisible({ timeout: 10_000 })
    await expect(page.getByTestId('timeline-list')).toContainText('710')
    await expect(page.getByTestId('timeline-list')).toContainText('730')
    await expect(page.locator('.timeline-item--conflict')).toHaveCount(0)

    await app.close()
  })

  test('E2E-TL-03: timeline conflict shows red warning', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createBookAndOpenEditor(page, '时间冲突测试')
    await dismissCockpitIfOpen(page)
    await ensureChapterEditor(page)

    await addCharacterSetting(page, '主角')
    await openCharacterSetting(page, '主角')
    await expect(page.getByTestId('character-arc-panel')).toBeVisible({ timeout: 15_000 })
    await page.getByTestId('character-birth-date').fill('700')
    await page.getByRole('button', { name: '保存' }).click()

    await page.getByTestId('sidebar-tab-chapters').click()
    await openChapterByIndex(page, 0)
    await setChapterStoryTime(page, '730', 0)

    await page.getByRole('button', { name: '+ 新章' }).click()
    await expect(page.locator('.ProseMirror')).toBeVisible({ timeout: 10_000 })
    await setChapterStoryTime(page, '720', 1)

    await page.getByTestId('open-timeline').click()
    await expect(page.getByTestId('timeline-modal')).toBeVisible({ timeout: 10_000 })
    await expect(page.locator('.timeline-item--conflict')).toHaveCount(1, { timeout: 10_000 })
    await expect(page.getByTestId('timeline-conflict-msg')).toBeVisible()

    await app.close()
  })
})