import path from 'path'
import { mkdtempSync, rmSync, existsSync } from 'fs'
import { join } from 'path'
import { tmpdir } from 'os'
import { test, expect, _electron as electron, type Page } from '@playwright/test'

const ROOT = path.join(import.meta.dirname, '..')

async function launchApp(userDataDir: string) {
  return electron.launch({
    args: [ROOT],
    env: {
      ...process.env,
      BILIN_E2E: '1',
      BILIN_E2E_USER_DATA: userDataDir
    }
  })
}

async function skipOnboarding(page: Page): Promise<void> {
  await page.waitForLoadState('domcontentloaded')
  await expect(page.locator('#app')).toBeVisible({ timeout: 20_000 })
  await expect(page.getByText('欢迎使用笔临')).toBeVisible({ timeout: 15_000 })
  await page.getByRole('button', { name: '跳过' }).click()
  await expect(page.getByText('欢迎使用笔临')).toBeHidden({ timeout: 10_000 })
}

async function dismissCockpitIfOpen(page: Page): Promise<void> {
  const cockpit = page.locator('[data-testid="cockpit-modal"]')
  try {
    await cockpit.waitFor({ state: 'visible', timeout: 15_000 })
    await cockpit.locator('.modal-close').click()
    await expect(cockpit).toBeHidden({ timeout: 5000 })
  } catch {
    /* cockpit did not open */
  }
}

async function createAndOpenBook(page: Page, name: string): Promise<void> {
  await page.getByRole('button', { name: /新建书籍/ }).first().click()
  await page.locator('.dialog-content input').first().fill(name)
  await page.getByRole('button', { name: '创建' }).click()
  await expect(page.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
  await dismissCockpitIfOpen(page)
}

async function createCharacterSetting(page: Page, name: string): Promise<void> {
  await page.getByTestId('sidebar-tab-setting').click()
  await page.getByTestId('setting-new').click()
  await page.getByTestId('setting-name-input').fill(name)
  await page.locator('.dialog-content select').selectOption('character')
  await page.getByRole('button', { name: '创建' }).click()
  await expect(page.getByTestId(/setting-item-/).filter({ hasText: name })).toBeVisible({
    timeout: 10_000
  })
}

test.describe('Character graph P7', () => {
  let userDataDir: string

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

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

  test('E2E-GRAPH-01: relationship editor and graph modal', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '图谱测试书')
    await createCharacterSetting(page, '角色甲')
    await createCharacterSetting(page, '角色乙')

    await page.getByTestId(/setting-item-/).filter({ hasText: '角色甲' }).click()
    await expect(page.getByTestId('setting-relationships')).toBeVisible({ timeout: 10_000 })
    await page.getByTestId('setting-relationship-add').click()
    await expect(page.locator('.setting-relationship-form select')).toBeVisible({ timeout: 10_000 })
    await page.locator('.setting-relationship-form select').selectOption({ index: 1 })
    await expect(page.locator('.setting-relationship-form input.form-control')).toBeVisible({
      timeout: 10_000
    })
    await page.locator('.setting-relationship-form input.form-control').fill('挚友')
    await page.locator('.setting-relationship-form .btn-primary').click()
    await expect(page.getByTestId('setting-relationships')).toContainText('挚友')

    await page.getByTestId('setting-open-graph').click()
    await expect(page.getByTestId('character-graph-cy')).toBeVisible({ timeout: 10_000 })
    await page.getByTestId('graph-layout-circle').click()
    await expect(page.getByTestId('character-graph-sidebar')).toBeVisible()
    await app.close()
  })

  test('E2E-GRAPH-02: tap node shows sidebar with character name', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '图谱节点书')
    await createCharacterSetting(page, '节点A')
    await createCharacterSetting(page, '节点B')

    await page.getByTestId(/setting-item-/).filter({ hasText: '节点A' }).click()
    await page.getByTestId('setting-relationship-add').click()
    await expect(page.locator('.setting-relationship-form select')).toBeVisible({ timeout: 10_000 })
    await page.locator('.setting-relationship-form select').selectOption({ index: 1 })
    await expect(page.locator('.setting-relationship-form input.form-control')).toBeVisible({
      timeout: 10_000
    })
    await page.locator('.setting-relationship-form input.form-control').fill('同门')
    await page.locator('.setting-relationship-form .btn-primary').click()

    await page.getByTestId('setting-open-graph').click()
    await expect(page.getByTestId('character-graph-cy')).toBeVisible({ timeout: 10_000 })
    await page.evaluate(() => {
      const el = document.querySelector('[data-testid="character-graph-cy"]') as HTMLElement & {
        __bilinCy?: { nodes: () => { trigger: (e: string) => void }[] }
      }
      const cy = el?.__bilinCy
      if (!cy) throw new Error('cytoscape not ready')
      const nodes = cy.nodes()
      if (!nodes.length) throw new Error('no graph nodes')
      nodes[0]!.trigger('tap')
    })
    await expect(page.getByTestId('character-graph-sidebar')).toContainText(/节点A|节点B/, {
      timeout: 10_000
    })
    await app.close()
  })
})