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

export const renderedRoutes = [
  '/',
  '/platform',
  '/pricing',
  '/contact',
  '/trust',
  '/legal',
  '/privacy',
  '/terms',
  '/imprint',
  '/welcome-to-docs/',
  '/guides/intro/',
  '/guides/getting-started/',
  '/guides/first-project-checklist/',
  '/platform/evidence-review/',
  '/en/',
  '/en/platform',
  '/en/pricing',
  '/en/contact',
  '/en/trust',
  '/en/legal',
  '/en/privacy',
  '/en/terms',
  '/en/imprint',
  '/en/welcome-to-docs/',
  '/en/guides/intro/',
  '/en/guides/getting-started/',
  '/en/guides/first-project-checklist/',
  '/en/platform/evidence-review/',
] as const;

export const docsRoutes = [
  '/welcome-to-docs/',
  '/guides/intro/',
  '/guides/getting-started/',
  '/guides/first-project-checklist/',
  '/platform/evidence-review/',
  '/en/welcome-to-docs/',
  '/en/guides/intro/',
  '/en/guides/getting-started/',
  '/en/guides/first-project-checklist/',
  '/en/platform/evidence-review/',
] as const;

export const redirectRouteExpectations = {
  '/product': { status: 301, target: '/platform' },
  '/products': { status: 301, target: '/platform' },
  '/services': { status: 301, target: '/platform' },
  '/blog': { status: 302, target: '/platform' },
  '/insights': { status: 302, target: '/platform' },
  '/en/product': { status: 301, target: '/en/platform' },
  '/en/products': { status: 301, target: '/en/platform' },
  '/en/services': { status: 301, target: '/en/platform' },
  '/en/blog': { status: 302, target: '/en/platform' },
  '/en/insights': { status: 302, target: '/en/platform' },
} as const;

export const redirectRoutes = Object.keys(redirectRouteExpectations) as Array<
  keyof typeof redirectRouteExpectations
>;

export const staticRoutes = [
  '/robots.txt',
  '/sitemap-index.xml',
  '/manifest.json',
  '/favicon.ico',
] as const;

export const canonicalSiteUrl = 'https://tenantial.com';

const forbiddenPublicPatterns = [
  { label: 'ScrewFast residue', pattern: /ScrewFast/i },
  { label: 'construction residue', pattern: /\bconstruction\b/i },
  { label: 'hardware residue', pattern: /\bhardware\b/i },
  { label: 'template residue', pattern: /\btemplate\b/i },
  { label: 'open-source residue', pattern: /open-source/i },
  { label: 'TenantAtlas residue', pattern: /TenantAtlas/i },
  { label: 'TenantPilot residue', pattern: /TenantPilot/i },
  { label: 'TenantCTRL residue', pattern: /TenantCTRL/i },
  { label: 'fake social proof', pattern: /trusted by/i },
  { label: 'SOC 2 claim', pattern: /SOC\s*2/i },
  { label: 'ISO 27001 claim', pattern: /ISO\s*27001/i },
  { label: 'uptime claim', pattern: /99\.9%|guaranteed uptime/i },
  { label: 'Microsoft endorsement', pattern: /Microsoft endorsed/i },
  { label: 'Microsoft certification claim', pattern: /Microsoft certified/i },
  { label: 'recovery guarantee', pattern: /guaranteed recovery/i },
  { label: 'compliance guarantee', pattern: /guaranteed compliance/i },
  { label: 'fake checkout CTA', pattern: /\b(buy now|checkout)\b/i },
  {
    label: 'fake trial CTA',
    pattern: /\b(start free trial|create account)\b/i,
  },
  { label: 'fake app access CTA', pattern: /\b(sign in|log in|login)\b/i },
];

const metadataSelectors = [
  'title',
  'meta[name="description"]',
  'meta[property="og:title"]',
  'meta[property="og:description"]',
  'meta[property="og:url"]',
  'meta[property="og:image"]',
  'meta[property="twitter:url"]',
  'meta[name="twitter:title"]',
  'meta[name="twitter:description"]',
  'meta[name="twitter:image"]',
].join(',');

function normalizePath(path: string): string {
  if (path === '') {
    return '/';
  }

  return path === '/' || path.includes('.') || path.endsWith('/')
    ? path
    : `${path}/`;
}

function normalizeRouteForSitemap(route: string): string {
  return route === '/' ? '/' : normalizePath(route);
}

function routeToCanonicalPath(route: string): string {
  return route === '' ? '/' : route;
}

export async function expectNoForbiddenPublicText(page: Page): Promise<void> {
  const text = await page.locator('body').innerText();

  for (const { label, pattern } of forbiddenPublicPatterns) {
    expect(text, label).not.toMatch(pattern);
  }
}

export async function expectNoForbiddenPublicClaims(page: Page): Promise<void> {
  await expectNoForbiddenPublicText(page);

  const metadataText = await page
    .locator(metadataSelectors)
    .evaluateAll(nodes =>
      nodes
        .map(node => node.textContent || node.getAttribute('content') || '')
        .join('\n')
    );

  for (const { label, pattern } of forbiddenPublicPatterns) {
    expect(metadataText, `${label} in metadata`).not.toMatch(pattern);
  }
}

export async function expectNoHorizontalOverflow(page: Page): Promise<void> {
  const metrics = await page.evaluate(() => ({
    clientWidth: document.documentElement.clientWidth,
    scrollWidth: document.documentElement.scrollWidth,
  }));

  expect(metrics.scrollWidth).toBeLessThanOrEqual(metrics.clientWidth + 1);
}

export async function expectCoreCapabilitiesVisible(page: Page): Promise<void> {
  const text = (await page.locator('body').innerText()).toLowerCase();

  for (const terms of [
    ['backup'],
    ['restore'],
    ['drift detection', 'drift'],
    ['findings'],
    ['evidence'],
    ['auditability'],
    ['exceptions'],
    ['reviews', 'review'],
  ]) {
    expect(
      terms.some(term => text.includes(term)),
      `missing capability term: ${terms.join(' or ')}`
    ).toBe(true);
  }
}

export async function expectNoPlaceholderLinks(page: Page): Promise<void> {
  const placeholders = await page
    .locator('a[href="#"], a[href=""], area[href="#"], area[href=""]')
    .evaluateAll(nodes =>
      nodes.map(node => ({
        text: node.textContent?.trim() || '',
        href: node.getAttribute('href'),
      }))
    );

  expect(placeholders).toEqual([]);
}

export async function expectPublicLinksAreIntentional(
  page: Page,
  request: APIRequestContext,
  sourceRoute: string
): Promise<void> {
  const allowedRoutes = new Set<string>(
    [
      ...renderedRoutes,
      ...redirectRoutes,
      ...staticRoutes,
      '/sitemap-0.xml',
    ].map(route => normalizePath(route))
  );

  const hrefs = await page
    .locator('a[href], area[href]')
    .evaluateAll(nodes =>
      nodes
        .map(node => node.getAttribute('href')?.trim())
        .filter((href): href is string => Boolean(href))
    );

  for (const href of hrefs) {
    expect(href, `placeholder link on ${sourceRoute}`).not.toBe('#');

    if (
      href.startsWith('mailto:') ||
      href.startsWith('tel:') ||
      href.startsWith('javascript:')
    ) {
      continue;
    }

    const url = new URL(href, canonicalSiteUrl);

    if (url.origin !== canonicalSiteUrl) {
      expect(['http:', 'https:']).toContain(url.protocol);
      continue;
    }

    const normalizedPath = normalizePath(url.pathname);
    expect(
      allowedRoutes.has(normalizedPath),
      `unexpected public link ${href} on ${sourceRoute}`
    ).toBe(true);

    if (url.hash && normalizePath(sourceRoute) === normalizedPath) {
      const targetId = url.hash.slice(1);
      await expect(
        page.locator(`#${targetId}`),
        `missing anchor target ${url.hash} on ${sourceRoute}`
      ).toHaveCount(1);
    }

    if (!url.hash || normalizePath(sourceRoute) !== normalizedPath) {
      const response = await request.get(url.pathname);
      expect(
        response.status(),
        `unexpected status for linked route ${href} on ${sourceRoute}`
      ).toBeLessThan(400);
    }
  }
}

export async function expectMetadataForRoute(
  page: Page,
  route: string,
  expected: { title: RegExp; description: RegExp }
): Promise<void> {
  await expect(page).toHaveTitle(expected.title);
  await expect(page.locator('meta[name="description"]')).toHaveAttribute(
    'content',
    expected.description
  );

  const canonicalUrl = `${canonicalSiteUrl}${routeToCanonicalPath(route)}`;

  await expect(page.locator('link[rel="canonical"]')).toHaveAttribute(
    'href',
    canonicalUrl
  );
  await expect(page.locator('meta[property="og:url"]').last()).toHaveAttribute(
    'content',
    canonicalUrl
  );
  await expect(
    page
      .locator('meta[property="twitter:url"], meta[name="twitter:url"]')
      .last()
  ).toHaveAttribute('content', canonicalUrl);
  await expect(
    page.locator('meta[property="og:image"]').last()
  ).toHaveAttribute('content', /\/_astro\/social\.[^/]+\.png$/);
  await expect(
    page.locator('meta[name="twitter:image"]').last()
  ).toHaveAttribute('content', /\/_astro\/social\.[^/]+\.png$/);
}

export function extractSitemapUrls(xml: string): string[] {
  return Array.from(xml.matchAll(/<loc>([^<]+)<\/loc>/g)).map(([, url]) => url);
}

export async function readSitemapUrls(page: Page): Promise<string[]> {
  await page.goto('/sitemap-0.xml');

  return extractSitemapUrls(await page.content());
}

export function expectSitemapIncludesRoutes(
  urls: string[],
  routes: readonly string[]
): void {
  for (const route of routes) {
    const url = `${canonicalSiteUrl}${normalizeRouteForSitemap(route)}`;
    expect(urls, `sitemap missing ${url}`).toContain(url);
  }
}

export function expectSitemapExcludesRoutes(
  urls: string[],
  routes: readonly string[]
): void {
  for (const route of routes) {
    const url = `${canonicalSiteUrl}${normalizeRouteForSitemap(route)}`;
    expect(urls, `sitemap should exclude ${url}`).not.toContain(url);
  }
}