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

import { contextForUser } from './helpers';

const BASE_URL = process.env.E2E_BASE_URL ?? 'http://localhost:5173';

/**
 * Comments UI (issue #92): the full two-user lifecycle in the panel,
 * resolve/unresolve with the collapsed section, the permission variant
 * (composer hidden with a hint), and the localStorage unread badge.
 * The pack provisions its own page and grant, so it is repeatable.
 */

let pondId: string;
let pageUrl: string;
let pageId: string;
let readerUserId: string;

async function pondOf(owner: BrowserContext): Promise<{ id: string; slug: string }> {
  const ponds = (await (await owner.request.get('/api/v1/ponds')).json()) as {
    id: string;
    slug: string;
    type: string;
  }[];
  const shared = ponds.find((p) => p.type === 'shared');
  expect(shared).toBeTruthy();
  return shared!;
}

test.beforeAll(async ({ browser }) => {
  const owner = await contextForUser(browser, BASE_URL, 'fixture-user');
  const pond = await pondOf(owner);
  pondId = pond.id;

  // Fresh page per run — never depends on fixture pages' trash state.
  const created = await owner.request.post(`/api/v1/ponds/${pondId}/pages`, {
    data: { title: `Comment stage ${Date.now()}` },
  });
  expect(created.ok()).toBe(true);
  const page = (await created.json()) as { id: string; slug: string };
  pageId = page.id;
  pageUrl = `/p/${pond.slug}/${page.slug}`;

  // fixture-editor becomes a reader-member of the pond (the second user);
  // a leftover membership from an aborted run just yields a conflict we ignore.
  await owner.request.post(`/api/v1/ponds/${pondId}/members`, {
    data: { usernameOrEmail: 'fixture-editor', role: 'reader' },
  });
  const members = (await (await owner.request.get(`/api/v1/ponds/${pondId}/members`)).json()) as {
    members: { id: string; username: string }[];
  };
  readerUserId = members.members.find((m) => m.username === 'fixture-editor')!.id;
  // Deterministic starting policy.
  await owner.request.patch(`/api/v1/ponds/${pondId}`, { data: { commentPolicy: 'readers' } });
  await owner.close();
});

test.afterAll(async ({ browser }) => {
  const owner = await contextForUser(browser, BASE_URL, 'fixture-user');
  await owner.request.patch(`/api/v1/ponds/${pondId}`, { data: { commentPolicy: 'readers' } });
  if (readerUserId) await owner.request.delete(`/api/v1/ponds/${pondId}/members/${readerUserId}`);
  if (pageId) await owner.request.delete(`/api/v1/pages/${pageId}`);
  await owner.close();
});

test('two users run the full comment lifecycle with resolve/unresolve', async ({ browser }) => {
  // The reader starts the thread.
  const reader = await contextForUser(browser, BASE_URL, 'fixture-editor');
  const readerPage = await reader.newPage();
  await readerPage.goto(pageUrl);
  await readerPage.locator('.editor-shell__comments-toggle').click();
  const readerPanel = readerPage.locator('.comments-panel');
  await readerPanel.locator('.comments-composer textarea').fill('Is this **final**?');
  await readerPanel.locator('.comments-composer button[type="submit"]').click();
  await expect(readerPanel.locator('.comment__body strong')).toHaveText('final');

  // The owner sees the unread badge, replies, and resolves the thread.
  const owner = await contextForUser(browser, BASE_URL, 'fixture-user');
  const ownerPage = await owner.newPage();
  await ownerPage.goto(pageUrl);
  await expect(ownerPage.locator('.comments-unread-badge')).toBeVisible();
  await ownerPage.locator('.editor-shell__comments-toggle').click();
  const ownerPanel = ownerPage.locator('.comments-panel');
  await ownerPanel
    .locator('.comments-thread .comments-link-button', { hasText: /reply|antwort/i })
    .click();
  await ownerPanel.locator('.comments-thread textarea').fill('Yes, shipping it.');
  await ownerPanel.locator('.comments-thread button[type="submit"]').click();
  await expect(ownerPanel.locator('.comments-thread__replies .comment__body')).toContainText(
    'shipping',
  );

  // Resolve collapses the thread into the resolved section.
  await ownerPanel
    .locator('.comment__actions .comments-link-button', { hasText: /resolve|erledig/i })
    .first()
    .click();
  const resolvedSection = ownerPanel.locator('.comments-panel__resolved');
  await expect(resolvedSection).toBeVisible();
  await expect(resolvedSection.locator('details, summary').first()).toBeVisible();
  // Collapsed: the thread body is hidden until the section is opened.
  await expect(resolvedSection.locator('.comment__body strong')).toBeHidden();
  await resolvedSection.locator('summary').click();
  await expect(resolvedSection.locator('.comment__body strong')).toBeVisible();

  // Unresolve restores it to the open list.
  await resolvedSection.locator('.comments-link-button', { hasText: /reopen|öffnen/i }).click();
  await expect(ownerPanel.locator('.comments-panel__resolved')).toHaveCount(0);
  await expect(ownerPanel.locator('.comments-thread .comment__body strong')).toBeVisible();

  // Author edits and deletes own reply.
  const replyItem = ownerPanel.locator('.comments-thread__replies .comment');
  await replyItem.locator('.comments-link-button', { hasText: /edit|bearbeit/i }).click();
  await replyItem.locator('textarea').fill('Yes — shipped.');
  await replyItem.locator('button[type="submit"]').click();
  await expect(replyItem.locator('.comment__body')).toContainText('shipped.');
  await expect(replyItem.locator('.comment__edited')).toBeVisible();
  await replyItem.locator('.comments-link-button', { hasText: /delete|löschen/i }).click();
  await expect(ownerPanel.locator('.comments-thread__replies .comment')).toHaveCount(0);

  // Cleanup: the reader deletes their own (now reply-free) root.
  await readerPage.reload();
  await readerPage.locator('.editor-shell__comments-toggle').click();
  await readerPanel.locator('.comments-link-button', { hasText: /delete|löschen/i }).click();
  await expect(readerPanel.locator('.comments-panel__empty')).toBeVisible();

  await reader.close();
  await owner.close();
});

test('the composer hides with a hint when the policy bars readers', async ({ browser }) => {
  const owner = await contextForUser(browser, BASE_URL, 'fixture-user');
  await owner.request.patch(`/api/v1/ponds/${pondId}`, { data: { commentPolicy: 'editors' } });
  await owner.close();

  const reader = await contextForUser(browser, BASE_URL, 'fixture-editor');
  const page = await reader.newPage();
  await page.goto(pageUrl);
  await page.locator('.editor-shell__comments-toggle').click();
  const panel = page.locator('.comments-panel');
  await expect(panel.locator('.comments-panel__policy-hint')).toBeVisible();
  await expect(panel.locator('.comments-composer')).toHaveCount(0);
  await reader.close();

  const ownerAgain = await contextForUser(browser, BASE_URL, 'fixture-user');
  await ownerAgain.request.patch(`/api/v1/ponds/${pondId}`, {
    data: { commentPolicy: 'readers' },
  });
  await ownerAgain.close();
});