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

/** Matches server/internal/api/integration_test.go testAuthUser / testAuthPass. */
export const E2E_USER = process.env.AETHERFORGE_E2E_USER || 'testuser';
export const E2E_PASS = process.env.AETHERFORGE_E2E_PASS || 'testpass';

/** Seed this into the server data dir as users.json before first start (see tests/README.md). */
export const E2E_USERS_JSON = JSON.stringify({ [E2E_USER]: E2E_PASS });

export function e2eAuthHeaders(): Record<string, string> {
  const token = Buffer.from(`${E2E_USER}:${E2E_PASS}`).toString('base64');
  return {
    Authorization: `Basic ${token}`,
    'X-AetherForge-Client': 'dashboard',
  };
}

/**
 * Reads fleet_secret for stub agent auth.
 * Prefer AETHERFORGE_FLEET_SECRET (test-suite.ps1 seeds from data/config.json).
 */
export async function fetchFleetSecret(request: APIRequestContext): Promise<string> {
  if (process.env.AETHERFORGE_E2E !== '1') {
    const fromEnv = process.env.AETHERFORGE_FLEET_SECRET?.trim();
    if (fromEnv) return fromEnv;
  }

  const res = await request.get('/api/v1/config', {
    headers: e2eAuthHeaders(),
    timeout: 10_000,
  });
  if (!res.ok()) {
    throw new Error(`config fetch failed: ${res.status()}`);
  }
  const body = (await res.json()) as { server?: { fleet_secret?: string } };
  const secret = body.server?.fleet_secret?.trim() ?? '';
  if (!secret) {
    throw new Error(
      'fleet_secret missing — set AETHERFORGE_FLEET_SECRET from data/config.json in the E2E runner',
    );
  }
  return secret;
}

/** Poll /api/v1/health until status ok or timeout (mirrors test-suite.ps1 phase 8). */
export async function waitForServerHealth(
  request: APIRequestContext,
  opts?: { timeoutMs?: number; intervalMs?: number },
): Promise<boolean> {
  const timeoutMs = opts?.timeoutMs ?? 30_000;
  const intervalMs = opts?.intervalMs ?? 1_000;
  const deadline = Date.now() + timeoutMs;
  while (Date.now() < deadline) {
    try {
      const res = await request.get('/api/v1/health', { timeout: 2_000 });
      if (res.ok()) {
        const body = (await res.json()) as { status?: string };
        if (body.status === 'ok') return true;
      }
    } catch {
      /* retry */
    }
    await new Promise((r) => setTimeout(r, intervalMs));
  }
  return false;
}

/** 6px status dots fail Playwright visibility — assert card online via class instead. */
export async function expectOnlineCrucibleCard(page: Page, hostname: string): Promise<Locator> {
  const card = page.locator('.crucible-node-card').filter({
    has: page.locator('.cn-name', { hasText: hostname }),
  });
  await expect(card).toBeVisible({ timeout: 20_000 });
  await expect(card).not.toHaveClass(/offline/, { timeout: 20_000 });
  await expect(card.locator('.cn-status-dot')).toHaveClass(/on/, { timeout: 5_000 });
  return card;
}

export async function loginToDashboard(page: Page): Promise<void> {
  const commandDeck = page.getByRole('heading', { name: 'Command Deck' });

  for (let attempt = 0; attempt < 3; attempt++) {
    await page.goto('/', { waitUntil: 'domcontentloaded', timeout: 30_000 });

    if (await commandDeck.isVisible().catch(() => false)) {
      return;
    }

    const loginHeading = page.getByRole('heading', { name: 'AetherForge' });
    try {
      await expect(loginHeading).toBeVisible({ timeout: 25_000 });
    } catch (err) {
      if (attempt === 2) throw err;
      await page.waitForTimeout(2_000);
      continue;
    }

    await page.getByLabel('Username').fill(E2E_USER);
    await page.getByLabel('Password').fill(E2E_PASS);
    await page.getByRole('button', { name: /enter command deck/i }).click();

    try {
      await expect(commandDeck).toBeVisible({ timeout: 25_000 });
      return;
    } catch (err) {
      if (attempt === 2) throw err;
      await page.waitForTimeout(2_000);
    }
  }
}