#!/usr/bin/env node

import { mkdir, writeFile } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

import { chromium } from 'playwright';

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

const webRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const outputDir = path.join(webRoot, 'output', 'playwright');
const outputPath = path.join(outputDir, 'live-ops-policy-action-sweep.json');
const authStatePath = path.join(outputDir, 'live-ops-policy-action-sweep.state.json');
const authReportPath = path.join(outputDir, 'live-ops-policy-action-sweep.auth.json');
const scopeQuery = 'tenant=demo-prod&regions=us-east&environments=stage&timeWindow=7d';
const STEP_TIMEOUT_MS = 45_000;

async function settle(page) {
  await page.waitForLoadState('domcontentloaded', { timeout: 15_000 }).catch(() => {});
  await page.waitForTimeout(1_500);
}

async function headingText(page) {
  const headings = page.locator('h1, h2, [data-testid="page-title"], .page-title');
  const count = await headings.count();
  for (let index = 0; index < Math.min(count, 4); index += 1) {
    const text = (await headings.nth(index).innerText().catch(() => '')).trim();
    if (text) {
      return text;
    }
  }

  return '';
}

async function captureSnapshot(page, label) {
  const alerts = await page
    .locator('[role="alert"], .mat-mdc-snack-bar-container, .toast, .notification, .error-banner')
    .evaluateAll((nodes) =>
      nodes
        .map((node) => (node.textContent || '').trim().replace(/\s+/g, ' '))
        .filter(Boolean)
        .slice(0, 5),
    )
    .catch(() => []);
  const dialogs = await page
    .locator('[role="dialog"], dialog, .cdk-overlay-pane')
    .evaluateAll((nodes) =>
      nodes
        .map((node) => (node.textContent || '').trim().replace(/\s+/g, ' ').slice(0, 240))
        .filter(Boolean)
        .slice(0, 3),
    )
    .catch(() => []);
  const visibleInputs = await page
    .locator('input, textarea, select')
    .evaluateAll((nodes) =>
      nodes
        .filter((node) => {
          const style = globalThis.getComputedStyle(node);
          return style.visibility !== 'hidden' && style.display !== 'none';
        })
        .map((node) => ({
          tag: node.tagName,
          type: node.getAttribute('type') || '',
          name: node.getAttribute('name') || '',
          placeholder: node.getAttribute('placeholder') || '',
          value: node.value || '',
        }))
        .slice(0, 10),
    )
    .catch(() => []);

  return {
    label,
    url: page.url(),
    title: await page.title(),
    heading: await headingText(page),
    alerts,
    dialogs,
    visibleInputs,
  };
}

function slugify(value) {
  return value.toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-+|-+$/g, '').slice(0, 80) || 'step';
}

async function persistSummary(summary) {
  summary.lastUpdatedAtUtc = new Date().toISOString();
  await writeFile(outputPath, `${JSON.stringify(summary, null, 2)}\n`, 'utf8');
}

async function captureFailureSnapshot(page, label) {
  return captureSnapshot(page, `failure-${slugify(label)}`).catch((error) => ({
    label,
    error: error instanceof Error ? error.message : String(error),
  }));
}

async function runAction(page, route, label, runner) {
  const startedAtUtc = new Date().toISOString();
  const stepName = `${route} -> ${label}`;
  process.stdout.write(`[live-ops-policy-action-sweep] START ${stepName}\n`);

  let timeoutHandle = null;
  const startedAt = Date.now();

  try {
    const result = await Promise.race([
      runner(),
      new Promise((_, reject) => {
        timeoutHandle = setTimeout(() => {
          reject(new Error(`Timed out after ${STEP_TIMEOUT_MS}ms.`));
        }, STEP_TIMEOUT_MS);
      }),
    ]);

    const normalized = result && typeof result === 'object' ? result : { ok: true };
    const completed = {
      action: normalized.action || label,
      ...normalized,
      ok: typeof normalized.ok === 'boolean' ? normalized.ok : true,
      startedAtUtc,
      durationMs: Date.now() - startedAt,
    };

    process.stdout.write(
      `[live-ops-policy-action-sweep] DONE ${stepName} ok=${completed.ok} durationMs=${completed.durationMs}\n`,
    );
    return completed;
  } catch (error) {
    const failed = {
      action: label,
      ok: false,
      reason: 'exception',
      error: error instanceof Error ? error.message : String(error),
      startedAtUtc,
      durationMs: Date.now() - startedAt,
      snapshot: await captureFailureSnapshot(page, stepName),
    };

    process.stdout.write(
      `[live-ops-policy-action-sweep] FAIL ${stepName} error=${failed.error} durationMs=${failed.durationMs}\n`,
    );
    return failed;
  } finally {
    if (timeoutHandle) {
      clearTimeout(timeoutHandle);
    }
  }
}

async function navigate(page, route) {
  const separator = route.includes('?') ? '&' : '?';
  const url = `https://stella-ops.local${route}${separator}${scopeQuery}`;
  await page.goto(url, { waitUntil: 'domcontentloaded', timeout: 30_000 });
  await settle(page);
  return url;
}

async function findNavigationTarget(page, name, index = 0) {
  const candidates = [
    { role: 'link', locator: page.getByRole('link', { name }) },
    { role: 'tab', locator: page.getByRole('tab', { name }) },
  ];

  for (const candidate of candidates) {
    const count = await candidate.locator.count();
    if (count > index) {
      return {
        matchedRole: candidate.role,
        locator: candidate.locator.nth(index),
      };
    }
  }

  return null;
}

async function clickLink(context, page, route, name, index = 0) {
  await navigate(page, route);
  const target = await findNavigationTarget(page, name, index);
  if (!target) {
    return {
      action: `link:${name}`,
      ok: false,
      reason: 'missing-link',
      snapshot: await captureSnapshot(page, `missing-link:${name}`),
    };
  }

  const startUrl = page.url();
  const popupPromise = context.waitForEvent('page', { timeout: 5_000 }).catch(() => null);
  await target.locator.click({ timeout: 10_000 });
  const popup = await popupPromise;
  if (popup) {
    await popup.waitForLoadState('domcontentloaded', { timeout: 15_000 }).catch(() => {});
    const result = {
      action: `link:${name}`,
      ok: true,
      matchedRole: target.matchedRole,
      mode: 'popup',
      targetUrl: popup.url(),
      title: await popup.title().catch(() => ''),
    };
    await popup.close().catch(() => {});
    return result;
  }

  await page.waitForTimeout(1_000);
  return {
    action: `link:${name}`,
    ok: page.url() !== startUrl,
    matchedRole: target.matchedRole,
    targetUrl: page.url(),
    snapshot: await captureSnapshot(page, `after-link:${name}`),
  };
}

async function clickButton(page, route, name, index = 0) {
  await navigate(page, route);
  const locator = page.getByRole('button', { name }).nth(index);
  if ((await locator.count()) === 0) {
    return {
      action: `button:${name}`,
      ok: false,
      reason: 'missing-button',
      snapshot: await captureSnapshot(page, `missing-button:${name}`),
    };
  }

  const disabledBeforeClick = await locator.isDisabled().catch(() => false);
  const startUrl = page.url();
  const downloadPromise = page.waitForEvent('download', { timeout: 4_000 }).catch(() => null);
  await locator.click({ timeout: 10_000 }).catch((error) => {
    throw new Error(`${name}: ${error instanceof Error ? error.message : String(error)}`);
  });
  const download = await downloadPromise;
  if (download) {
    return {
      action: `button:${name}`,
      ok: true,
      mode: 'download',
      disabledBeforeClick,
      suggestedFilename: download.suggestedFilename(),
      snapshot: await captureSnapshot(page, `after-download:${name}`),
    };
  }

  await page.waitForTimeout(1_200);
  return {
    action: `button:${name}`,
    ok: true,
    disabledBeforeClick,
    urlChanged: page.url() !== startUrl,
    snapshot: await captureSnapshot(page, `after-button:${name}`),
  };
}

async function clickFirstAvailableButton(page, route, names) {
  await navigate(page, route);

  for (const name of names) {
    const locator = page.getByRole('button', { name }).first();
    if ((await locator.count()) === 0) {
      continue;
    }

    const disabledBeforeClick = await locator.isDisabled().catch(() => false);
    const startUrl = page.url();
    const downloadPromise = page.waitForEvent('download', { timeout: 4_000 }).catch(() => null);
    await locator.click({ timeout: 10_000 }).catch((error) => {
      throw new Error(`${name}: ${error instanceof Error ? error.message : String(error)}`);
    });
    const download = await downloadPromise;
    if (download) {
      return {
        action: `button:${name}`,
        ok: true,
        mode: 'download',
        disabledBeforeClick,
        suggestedFilename: download.suggestedFilename(),
        snapshot: await captureSnapshot(page, `after-download:${name}`),
      };
    }

    await page.waitForTimeout(1_200);
    return {
      action: `button:${name}`,
      ok: true,
      disabledBeforeClick,
      urlChanged: page.url() !== startUrl,
      snapshot: await captureSnapshot(page, `after-button:${name}`),
    };
  }

  return {
    action: `button:${names.join('|')}`,
    ok: false,
    reason: 'missing-button',
    snapshot: await captureSnapshot(page, `missing-button:${names.join('|')}`),
  };
}

async function exerciseShadowResults(page) {
  const route = '/ops/policy/simulation';
  await navigate(page, route);

  const viewButton = page.getByRole('button', { name: 'View Results' }).first();
  if ((await viewButton.count()) === 0) {
    return {
      action: 'button:View Results',
      ok: false,
      reason: 'missing-button',
      snapshot: await captureSnapshot(page, 'policy-simulation:missing-view-results'),
    };
  }

  const steps = [];
  const initiallyDisabled = await viewButton.isDisabled().catch(() => false);
  let enabledInFlow = false;
  let restoredDisabledState = false;

  if (initiallyDisabled) {
    const enableButton = page.getByRole('button', { name: 'Enable' }).first();
    if ((await enableButton.count()) === 0) {
      return {
        action: 'button:View Results',
        ok: false,
        reason: 'disabled-without-enable',
        initiallyDisabled,
        snapshot: await captureSnapshot(page, 'policy-simulation:view-results-disabled'),
      };
    }

    await enableButton.click({ timeout: 10_000 });
    enabledInFlow = true;
    await Promise.race([
      page.waitForFunction(() => {
        const buttons = Array.from(document.querySelectorAll('button'));
        const button = buttons.find((candidate) => (candidate.textContent || '').trim() === 'View Results');
        return button instanceof HTMLButtonElement && !button.disabled;
      }, null, { timeout: 12_000 }).catch(() => {}),
      page.waitForTimeout(2_000),
    ]);
    steps.push({
      step: 'enable-shadow-mode',
      snapshot: await captureSnapshot(page, 'policy-simulation:enabled-shadow-mode'),
    });
  }

  const activeViewButton = page.getByRole('button', { name: 'View Results' }).first();
  const stillDisabled = await activeViewButton.isDisabled().catch(() => false);
  if (stillDisabled) {
    return {
      action: 'button:View Results',
      ok: false,
      reason: 'still-disabled-after-enable',
      initiallyDisabled,
      enabledInFlow,
      steps,
      snapshot: await captureSnapshot(page, 'policy-simulation:view-results-still-disabled'),
    };
  }

  const startUrl = page.url();
  await activeViewButton.click({ timeout: 10_000 });
  await page.waitForTimeout(1_200);
  const resultsUrl = page.url();
  const resultsSnapshot = await captureSnapshot(page, 'policy-simulation:view-results');

  if (enabledInFlow) {
    await navigate(page, route);
    const disableButton = page.getByRole('button', { name: 'Disable' }).first();
    if ((await disableButton.count()) > 0 && !(await disableButton.isDisabled().catch(() => false))) {
      await disableButton.click({ timeout: 10_000 });
      await page.waitForTimeout(1_200);
      restoredDisabledState = true;
      steps.push({
        step: 'restore-shadow-disabled',
        snapshot: await captureSnapshot(page, 'policy-simulation:restored-shadow-disabled'),
      });
    }
  }

  return {
    action: 'button:View Results',
    ok: resultsUrl !== startUrl && resultsUrl.includes('/ops/policy/simulation/history'),
    initiallyDisabled,
    enabledInFlow,
    restoredDisabledState,
    targetUrl: resultsUrl,
    snapshot: resultsSnapshot,
    steps,
  };
}

async function checkDisabledButton(page, route, name) {
  await navigate(page, route);
  const locator = page.getByRole('button', { name }).first();
  if ((await locator.count()) === 0) {
    return { action: `button:${name}`, ok: false, reason: 'missing-button' };
  }

  return {
    action: `button:${name}`,
    ok: true,
    disabled: await locator.isDisabled().catch(() => false),
    snapshot: await captureSnapshot(page, `disabled-check:${name}`),
  };
}

async function notificationsFormProbe(context, page) {
  const route = '/ops/operations/notifications';
  const actions = [];

  actions.push(await runAction(page, route, 'flow:New channel', async () => {
    await navigate(page, route);
    const newChannel = page.getByRole('button', { name: 'New channel' }).first();
    if ((await newChannel.count()) === 0) {
      return {
        action: 'flow:New channel',
        ok: false,
        reason: 'missing-button',
        snapshot: await captureSnapshot(page, 'notifications:missing-new-channel'),
      };
    }

    await newChannel.click({ timeout: 10_000 });
    await page.waitForTimeout(800);
    const flowSteps = [
      {
        step: 'button:New channel',
        snapshot: await captureSnapshot(page, 'notifications:new-channel'),
      },
    ];

    const firstTextInput = page.locator('input[type="text"], input:not([type]), textarea').first();
    if ((await firstTextInput.count()) > 0) {
      await firstTextInput.fill('Live QA Channel');
      flowSteps.push({ step: 'fill:channel-name', value: 'Live QA Channel' });
    }

    const sendTest = page.getByRole('button', { name: 'Send test' }).first();
    if ((await sendTest.count()) > 0) {
      await sendTest.click({ timeout: 10_000 }).catch(() => {});
      await page.waitForTimeout(1_200);
      flowSteps.push({
        step: 'button:Send test',
        snapshot: await captureSnapshot(page, 'notifications:send-test'),
      });
    }

    const saveChannel = page.getByRole('button', { name: 'Save channel' }).first();
    if ((await saveChannel.count()) > 0) {
      await saveChannel.click({ timeout: 10_000 }).catch(() => {});
      await page.waitForTimeout(1_200);
      flowSteps.push({
        step: 'button:Save channel',
        snapshot: await captureSnapshot(page, 'notifications:save-channel'),
      });
    }

    return {
      action: 'flow:New channel',
      ok: true,
      steps: flowSteps,
      snapshot: await captureSnapshot(page, 'notifications:new-channel-finished'),
    };
  }));

  actions.push(await runAction(page, route, 'flow:New rule', async () => {
    await navigate(page, route);
    const newRule = page.getByRole('button', { name: 'New rule' }).first();
    if ((await newRule.count()) === 0) {
      return {
        action: 'flow:New rule',
        ok: false,
        reason: 'missing-button',
        snapshot: await captureSnapshot(page, 'notifications:missing-new-rule'),
      };
    }

    await newRule.click({ timeout: 10_000 });
    await page.waitForTimeout(800);
    const flowSteps = [
      {
        step: 'button:New rule',
        snapshot: await captureSnapshot(page, 'notifications:new-rule'),
      },
    ];

    const saveRule = page.getByRole('button', { name: 'Save rule' }).first();
    if ((await saveRule.count()) > 0) {
      await saveRule.click({ timeout: 10_000 }).catch(() => {});
      await page.waitForTimeout(1_200);
      flowSteps.push({
        step: 'button:Save rule',
        snapshot: await captureSnapshot(page, 'notifications:save-rule'),
      });
    }

    return {
      action: 'flow:New rule',
      ok: true,
      steps: flowSteps,
      snapshot: await captureSnapshot(page, 'notifications:new-rule-finished'),
    };
  }));

  actions.push(await runAction(page, route, 'link:Open watchlist tuning', () => clickLink(context, page, route, 'Open watchlist tuning')));
  actions.push(await runAction(page, route, 'link:Review watchlist alerts', () => clickLink(context, page, route, 'Review watchlist alerts')));

  return { route, actions };
}

async function main() {
  await mkdir(outputDir, { recursive: true });

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

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

  const context = await createAuthenticatedContext(browser, authReport, { statePath: authStatePath });
  context.setDefaultTimeout(15_000);
  context.setDefaultNavigationTimeout(30_000);

  const page = await context.newPage();
  page.setDefaultTimeout(15_000);
  page.setDefaultNavigationTimeout(30_000);

  const runtime = {
    consoleErrors: [],
    pageErrors: [],
    responseErrors: [],
    requestFailures: [],
  };
  const results = [];
  const summary = {
    generatedAtUtc: new Date().toISOString(),
    results,
    runtime,
  };

  page.on('console', (message) => {
    if (message.type() === 'error') {
      runtime.consoleErrors.push({ page: page.url(), text: message.text() });
    }
  });
  page.on('pageerror', (error) => {
    runtime.pageErrors.push({ page: page.url(), message: error.message });
  });
  page.on('requestfailed', (request) => {
    const url = request.url();
    if (/\.(?:css|js|map|png|jpg|jpeg|svg|woff2?)(?:$|\?)/i.test(url)) {
      return;
    }

    const errorText = request.failure()?.errorText ?? 'unknown';
    if (errorText === 'net::ERR_ABORTED') {
      return;
    }

    runtime.requestFailures.push({
      page: page.url(),
      method: request.method(),
      url,
      error: errorText,
    });
  });
  page.on('response', (response) => {
    const url = response.url();
    if (/\.(?:css|js|map|png|jpg|jpeg|svg|woff2?)(?:$|\?)/i.test(url)) {
      return;
    }

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

  try {
    results.push({
      route: '/ops/operations/quotas',
      actions: [
        await runAction(page, '/ops/operations/quotas', 'button:Configure Alerts', () =>
          clickButton(page, '/ops/operations/quotas', 'Configure Alerts')),
        await runAction(page, '/ops/operations/quotas', 'button:Export Report', () =>
          clickButton(page, '/ops/operations/quotas', 'Export Report')),
        await runAction(page, '/ops/operations/quotas', 'link:View Details', () =>
          clickLink(context, page, '/ops/operations/quotas', 'View Details')),
        await runAction(page, '/ops/operations/quotas', 'link:Default Tenant', () =>
          clickLink(context, page, '/ops/operations/quotas', 'Default Tenant')),
      ],
    });
    await persistSummary(summary);

    results.push({
      route: '/ops/operations/dead-letter',
      actions: [
        await runAction(page, '/ops/operations/dead-letter', 'button:Export CSV', () =>
          clickButton(page, '/ops/operations/dead-letter', 'Export CSV')),
        await runAction(page, '/ops/operations/dead-letter', 'button:Replay All Retryable (0)', () =>
          checkDisabledButton(page, '/ops/operations/dead-letter', 'Replay All Retryable (0)')),
        await runAction(page, '/ops/operations/dead-letter', 'button:Clear', () =>
          clickButton(page, '/ops/operations/dead-letter', 'Clear')),
        await runAction(page, '/ops/operations/dead-letter', 'link:View Full Queue', () =>
          clickLink(context, page, '/ops/operations/dead-letter', 'View Full Queue')),
      ],
    });
    await persistSummary(summary);

    results.push({
      route: '/ops/operations/aoc',
      actions: [
        await runAction(page, '/ops/operations/aoc', 'button:Refresh', () =>
          clickButton(page, '/ops/operations/aoc', 'Refresh')),
        await runAction(page, '/ops/operations/aoc', 'button:Validate', () =>
          clickButton(page, '/ops/operations/aoc', 'Validate')),
        await runAction(page, '/ops/operations/aoc', 'link:Export Report', () =>
          clickLink(context, page, '/ops/operations/aoc', 'Export Report')),
        await runAction(page, '/ops/operations/aoc', 'link:View All', () =>
          clickLink(context, page, '/ops/operations/aoc', 'View All')),
        await runAction(page, '/ops/operations/aoc', 'link:Details', () =>
          clickLink(context, page, '/ops/operations/aoc', 'Details')),
        await runAction(page, '/ops/operations/aoc', 'link:Full Validator', () =>
          clickLink(context, page, '/ops/operations/aoc', 'Full Validator')),
      ],
    });
    await persistSummary(summary);

    results.push(await notificationsFormProbe(context, page));
    await persistSummary(summary);

      results.push({
        route: '/ops/policy/simulation',
        actions: [
          await runAction(page, '/ops/policy/simulation', 'button:View Results', () =>
            exerciseShadowResults(page)),
          await runAction(page, '/ops/policy/simulation', 'button:Enable|Disable', () =>
            clickFirstAvailableButton(page, '/ops/policy/simulation', ['Enable', 'Disable'])),
          await runAction(page, '/ops/policy/simulation', 'link:Simulation Console', () =>
          clickLink(context, page, '/ops/policy/simulation', 'Simulation Console')),
        await runAction(page, '/ops/policy/simulation', 'link:Coverage', () =>
          clickLink(context, page, '/ops/policy/simulation', 'Coverage')),
      ],
    });
    await persistSummary(summary);

    results.push({
      route: '/ops/policy/staleness',
      actions: [
        await runAction(page, '/ops/policy/staleness', 'button:SBOM', () =>
          clickButton(page, '/ops/policy/staleness', 'SBOM')),
        await runAction(page, '/ops/policy/staleness', 'button:Vulnerability Data', () =>
          clickButton(page, '/ops/policy/staleness', 'Vulnerability Data')),
        await runAction(page, '/ops/policy/staleness', 'button:VEX Statements', () =>
          clickButton(page, '/ops/policy/staleness', 'VEX Statements')),
        await runAction(page, '/ops/policy/staleness', 'button:Save Changes', () =>
          clickButton(page, '/ops/policy/staleness', 'Save Changes')),
        await runAction(page, '/ops/policy/staleness', 'link:Reset view', () =>
          clickLink(context, page, '/ops/policy/staleness', 'Reset view')),
      ],
    });
    await persistSummary(summary);
  } finally {
    summary.failedActionCount = results.flatMap((route) => route.actions ?? []).filter((action) => action?.ok === false).length;
    summary.runtimeIssueCount =
      runtime.consoleErrors.length + runtime.pageErrors.length + runtime.responseErrors.length + runtime.requestFailures.length;
    await persistSummary(summary).catch(() => {});
    await browser.close().catch(() => {});
  }

  process.stdout.write(`${JSON.stringify(summary, null, 2)}\n`);
  if (summary.failedActionCount > 0 || summary.runtimeIssueCount > 0) {
    process.exitCode = 1;
  }
}

main().catch((error) => {
  process.stderr.write(`[live-ops-policy-action-sweep] ${error instanceof Error ? error.message : String(error)}\n`);
  process.exitCode = 1;
});