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

import { contextForUser } from './helpers';

/**
 * Link editing pack (issue #29). Runs against the local dev stack (api +
 * web); no Mailpit needed.
 */
const BASE_URL = process.env.E2E_BASE_URL ?? 'http://localhost:5173';

async function createPage(
  context: Awaited<ReturnType<typeof contextForUser>>,
  title: string,
): Promise<{ pondSlug: string; pageSlug: string }> {
  const ponds = await context.request.get('/api/v1/ponds');
  const pond = (await ponds.json()).find((p: { type: string }) => p.type === 'personal');
  const created = await context.request.post(`/api/v1/ponds/${pond.id}/pages`, {
    data: { title },
  });
  const page = await created.json();
  return { pondSlug: pond.slug, pageSlug: page.slug };
}

async function enterEditModeWithText(page: Page, text: string): Promise<void> {
  await page.getByRole('button', { name: /edit|bearbeiten/i }).click();
  const content = page.locator('.ProseMirror');
  await expect(content).toHaveAttribute('contenteditable', 'true');
  await content.click();
  await page.keyboard.type(text);
  await page.keyboard.press('ControlOrMeta+a');
}

test('toolbar link button links the selection', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link Toolbar ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'dorfteich docs');

  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('https://example.org');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();

  await expect(page.locator('.ProseMirror a[href="https://example.org"]')).toHaveText(
    'dorfteich docs',
  );

  await context.close();
});

test('rejects invalid link protocols with a localized hint', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link Invalid ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'danger zone');

  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('javascript:alert(1)');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();

  await expect(page.locator('.editor-link-form__error')).toBeVisible();
  await expect(page.locator('.ProseMirror a')).toHaveCount(0);

  await context.close();
});

test('Mod-k edits the URL of an existing link', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link ModK ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'edit me');
  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('https://example.org/old');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();
  await expect(page.locator('.ProseMirror a[href="https://example.org/old"]')).toBeVisible();

  // Select the link text again, then edit it via the keyboard shortcut.
  await page.keyboard.press('ControlOrMeta+a');
  await page.keyboard.press('ControlOrMeta+k');
  const urlInput = page.getByLabel(/link url|link-url/i);
  await expect(urlInput).toHaveValue('https://example.org/old');
  await urlInput.fill('https://example.org/new');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();

  await expect(page.locator('.ProseMirror a[href="https://example.org/new"]')).toBeVisible();

  await context.close();
});

test('bubble menu removes a link', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link Remove ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'remove me');
  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('https://example.org');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();
  await expect(page.locator('.ProseMirror a')).toBeVisible();

  await page.locator('.ProseMirror a').click();
  await page.getByRole('button', { name: /remove link|link entfernen/i }).click();
  await expect(page.locator('.ProseMirror a')).toHaveCount(0);

  await context.close();
});

test('bubble menu "open in new tab" opens the link href', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link OpenTab ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'open me');
  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('https://example.org/open-me');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();
  await page.locator('.ProseMirror a').click();

  const [popup] = await Promise.all([
    context.waitForEvent('page'),
    page.getByRole('button', { name: /open in new tab|in neuem tab öffnen/i }).click(),
  ]);
  await popup.waitForLoadState();
  expect(popup.url()).toBe('https://example.org/open-me');

  await context.close();
});

test('read mode links open in a new tab by default', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link ReadMode ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'read mode link');
  await page.getByRole('button', { name: /add link|link hinzufügen/i }).click();
  await page.getByLabel(/link url|link-url/i).fill('https://example.org');
  await page.getByRole('button', { name: /apply|übernehmen/i }).click();
  await page.getByRole('button', { name: /read|lesen/i }).click();

  await expect(page.locator('.ProseMirror a')).toHaveAttribute('target', '_blank');

  await context.close();
});

test('pasting a URL over a selection links the selected text', async ({ browser }) => {
  const context = await contextForUser(browser, BASE_URL, 'fixture-user');
  const { pondSlug, pageSlug } = await createPage(context, `E2E Link Paste ${Date.now()}`);
  const page = await context.newPage();

  await page.goto(`/p/${pondSlug}/${pageSlug}`);
  await enterEditModeWithText(page, 'wrap this');

  await page.evaluate(() => {
    const el = document.querySelector('.ProseMirror');
    const dataTransfer = new DataTransfer();
    dataTransfer.setData('text/plain', 'https://example.org/pasted');
    el!.dispatchEvent(
      new ClipboardEvent('paste', { clipboardData: dataTransfer, bubbles: true, cancelable: true }),
    );
  });

  await expect(page.locator('.ProseMirror a[href="https://example.org/pasted"]')).toHaveText(
    'wrap this',
  );

  await context.close();
});