import { dirname, join } from 'node:path'
import { fileURLToPath } from 'node:url'

import { expect, type Locator, type Page } from '@playwright/test'

const here = dirname(fileURLToPath(import.meta.url))
/** Where `screenshot()` drops PNGs — gitignored, readable for visual review. */
const SCREENS_DIR = join(here, '..', '.artifacts', 'screens')

/**
 * Page Object over the CommiTea app shell. As real screens land (P3), add
 * per-screen page objects and accessor methods here; keep locators
 * user-facing (getByRole/getByText), never CSS/DOM structure.
 */
export class AppPage {
  constructor(readonly page: Page) {}

  get heading(): Locator {
    return this.page.getByRole('heading', { name: 'CommiTea' })
  }

  /** Assert the shell has rendered. */
  async expectLoaded(): Promise<void> {
    await expect(this.heading).toBeVisible()
  }

  /** Read the `commitea` preload API surface from the renderer. */
  async preloadApi(): Promise<Record<string, unknown> | undefined> {
    return this.page.evaluate(
      () => (globalThis as unknown as { commitea?: Record<string, unknown> }).commitea,
    )
  }

  /** Capture a full-page screenshot for visual review; returns the path. */
  async screenshot(name: string): Promise<string> {
    const path = join(SCREENS_DIR, `${name}.png`)
    await this.page.screenshot({ path, fullPage: true })
    return path
  }
}