#!/usr/bin/env node

import { mkdirSync, writeFileSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

import { chromium } from 'playwright';

import { authenticateFrontdoor, createAuthenticatedContext } from './live-frontdoor-auth.mjs';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const webRoot = path.resolve(__dirname, '..');
const outputDirectory = path.join(webRoot, 'output', 'playwright');
const statePath = path.join(outputDirectory, 'live-frontdoor-auth-state.json');
const reportPath = path.join(outputDirectory, 'live-frontdoor-auth-report.json');
const resultPath = path.join(outputDirectory, 'live-release-promotion-submit-check.json');

const scopeQuery = 'tenant=demo-prod&regions=us-east&environments=stage&timeWindow=7d';
const createRoute = `/releases/promotions/create?${scopeQuery}`;
const promotionDetailPattern = /^\/releases\/promotions\/(?!create$)[^/]+$/i;
const expectedScopeEntries = [
  ['tenant', 'demo-prod'],
  ['regions', 'us-east'],
  ['environments', 'stage'],
  ['timeWindow', '7d'],
];

function isStaticAsset(url) {
  return /\.(?:css|js|map|png|jpg|jpeg|svg|woff2?|ico)(?:$|\?)/i.test(url);
}

function isAbortedNavigationFailure(failure) {
  if (!failure) {
    return false;
  }

  return /aborted|net::err_abort/i.test(failure);
}

function collectScopeIssues(label, targetUrl) {
  const issues = [];
  const parsed = new URL(targetUrl);

  for (const [key, expectedValue] of expectedScopeEntries) {
    const actualValue = parsed.searchParams.get(key);
    if (actualValue !== expectedValue) {
      issues.push(`${label} missing preserved scope ${key}=${expectedValue}; actual=${actualValue ?? '<null>'}`);
    }
  }

  return issues;
}

async function clickNext(page) {
  await page.getByRole('button', { name: 'Next ->' }).click();
}

async function main() {
  mkdirSync(outputDirectory, { recursive: true });

  const authReport = await authenticateFrontdoor({
    statePath,
    reportPath,
    headless: true,
  });

  const browser = await chromium.launch({
    headless: true,
    args: ['--disable-dev-shm-usage'],
  });

  const context = await createAuthenticatedContext(browser, authReport, { statePath });
  const page = await context.newPage();

  const runtimeIssues = [];
  const responseErrors = [];
  const requestFailures = [];
  const consoleErrors = [];
  let promoteResponse = null;

  page.on('console', (message) => {
    if (message.type() === 'error') {
      consoleErrors.push(message.text());
    }
  });

  page.on('requestfailed', (request) => {
    const url = request.url();
    if (isStaticAsset(url) || isAbortedNavigationFailure(request.failure()?.errorText)) {
      return;
    }

    requestFailures.push({
      method: request.method(),
      url,
      error: request.failure()?.errorText ?? 'unknown',
      page: page.url(),
    });
  });

  page.on('response', async (response) => {
    const url = response.url();
    if (isStaticAsset(url)) {
      return;
    }

    if (url.includes('/api/v1/release-orchestrator/releases/') && url.endsWith('/promote')) {
      try {
        promoteResponse = {
          status: response.status(),
          url,
          body: await response.json(),
        };
      } catch {
        promoteResponse = {
          status: response.status(),
          url,
          body: null,
        };
      }
    }

    if (response.status() >= 400) {
      responseErrors.push({
        status: response.status(),
        method: response.request().method(),
        url,
        page: page.url(),
      });
    }
  });

  const result = {
    checkedAtUtc: new Date().toISOString(),
    route: createRoute,
    finalUrl: null,
    promoteResponse,
    scopeIssues: [],
    consoleErrors,
    requestFailures,
    responseErrors,
    runtimeIssues,
    runtimeIssueCount: 0,
  };

  try {
    await page.goto(`https://stella-ops.local${createRoute}`, {
      waitUntil: 'domcontentloaded',
      timeout: 30_000,
    });

    await page.getByLabel('Release/Bundle identity').fill('rel-001');
    await page.getByRole('button', { name: 'Load Target Environments' }).click();
    await page.locator('#target-env').selectOption('env-staging');
    await page.getByRole('button', { name: 'Refresh Gate Preview' }).click();
    await clickNext(page);
    await page.getByLabel('Justification').fill('Release approval path validated end to end.');
    await clickNext(page);

    const submitResponsePromise = page.waitForResponse(
      (response) =>
        response.request().method() === 'POST' &&
        response.url().includes('/api/v1/release-orchestrator/releases/') &&
        response.url().endsWith('/promote'),
      { timeout: 30_000 },
    );

    await page.getByRole('button', { name: 'Submit Promotion Request' }).click({
      noWaitAfter: true,
      timeout: 10_000,
    });
    const submitResponse = await submitResponsePromise;
    result.promoteResponse = promoteResponse ?? {
      status: submitResponse.status(),
      url: submitResponse.url(),
      body: null,
    };

    await page.waitForURL((url) => promotionDetailPattern.test(url.pathname), {
      timeout: 30_000,
    });

    result.finalUrl = page.url();
    result.scopeIssues.push(...collectScopeIssues('finalUrl', result.finalUrl));

    const finalPathname = new URL(result.finalUrl).pathname;
    if (!promotionDetailPattern.test(finalPathname)) {
      runtimeIssues.push(`Promotion submit did not land on a canonical detail route; actual path=${finalPathname}`);
    }

    if ((result.promoteResponse?.status ?? 0) >= 400) {
      runtimeIssues.push(`Promotion submit returned ${result.promoteResponse.status}`);
    }

    const errorBannerVisible = await page.getByText('Failed to submit promotion request.').isVisible().catch(() => false);
    if (errorBannerVisible) {
      runtimeIssues.push('Promotion submit surfaced an error banner after submit.');
    }
  } catch (error) {
    runtimeIssues.push(error instanceof Error ? error.message : String(error));
    result.finalUrl = page.url();
  } finally {
    result.runtimeIssues = [
      ...runtimeIssues,
      ...result.scopeIssues,
      ...responseErrors.map((entry) => `${entry.method} ${entry.url} -> ${entry.status}`),
      ...requestFailures.map((entry) => `${entry.method} ${entry.url} failed: ${entry.error}`),
      ...consoleErrors,
    ];
    result.runtimeIssueCount = result.runtimeIssues.length;
    writeFileSync(resultPath, `${JSON.stringify(result, null, 2)}\n`, 'utf8');
    await context.close();
    await browser.close();
  }

  if (result.runtimeIssueCount > 0) {
    throw new Error(result.runtimeIssues.join('; '));
  }

  process.stdout.write(`${JSON.stringify(result, null, 2)}\n`);
}

main().catch((error) => {
  process.stderr.write(`[live-release-promotion-submit-check] ${error instanceof Error ? error.message : String(error)}\n`);
  process.exit(1);
});