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

const ADMIN_EMAIL = 'admin@example.com';
const ADMIN_PASSWORD = 'Admin123!';

async function loginAsAdmin(page: Page) {
  await page.goto('/login');
  await page.getByLabel('Email').fill(ADMIN_EMAIL);
  await page.getByLabel('Password').fill(ADMIN_PASSWORD);
  await page.getByRole('button', { name: 'Sign In' }).click();
  await page.waitForURL('**/dashboard', { timeout: 10000 });
}

test.describe('Diagnostics - Debug Sessions', () => {
  test.beforeEach(async ({ page }) => {
    await loginAsAdmin(page);
  });

  test('navigates to diagnostics page', async ({ page }) => {
    await page.click('text=Diagnostics');
    await expect(page.getByText('Debug Sessions')).toBeVisible();
    await expect(page.getByText('Create Session')).toBeVisible();
  });

  test('shows session list with filters', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Check filter dropdowns exist
    await expect(page.getByLabel('Status')).toBeVisible();
    await expect(page.getByLabel('Collection Level')).toBeVisible();

    // Check table headers
    await expect(page.getByText('Session ID')).toBeVisible();
    await expect(page.getByText('Status')).toBeVisible();
    await expect(page.getByText('Target')).toBeVisible();
    await expect(page.getByText('Logs')).toBeVisible();
    await expect(page.getByText('Traces')).toBeVisible();
    await expect(page.getByText('Created')).toBeVisible();
  });

  test('creates new debug session', async ({ page }) => {
    await page.click('text=Diagnostics');
    await page.click('text=Create Session');

    // Should open modal
    await expect(page.getByText('Create Debug Session')).toBeVisible();

    // Fill form
    await page.getByLabel('Target User ID').fill('user_test_123');
    await page.getByLabel('Target Device ID').fill('device_test_456');

    // Select collection level
    await page.getByLabel('Collection Level').selectOption('debug');

    // Enable capture options
    await page.getByLabel('Capture Logs').check();
    await page.getByLabel('Capture Network').check();
    await page.getByLabel('Capture Screenshots').check();

    // Set duration
    await page.getByLabel('Max Duration (minutes)').fill('30');

    // Submit
    await page.click('text=Start Session');

    // Should show success and close modal
    await expect(page.getByText('Session created')).toBeVisible({ timeout: 5000 });
  });

  test('views session details', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Click on first session
    await page.locator('table tbody tr').first().click();

    // Should show detail panel
    await expect(page.getByText('Session Details')).toBeVisible();
    await expect(page.getByText('Status')).toBeVisible();
    await expect(page.getByText('Collection Level')).toBeVisible();
    await expect(page.getByText('Logs')).toBeVisible();
    await expect(page.getByText('Traces')).toBeVisible();
    await expect(page.getByText('Screenshots')).toBeVisible();
  });

  test('pauses and resumes session', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Find an active session
    const activeRow = page.locator('tr:has-text("Active")').first();

    if (await activeRow.isVisible().catch(() => false)) {
      // Click pause
      await activeRow.getByRole('button', { name: 'Pause' }).click();
      await expect(page.getByText('Session paused')).toBeVisible();

      // Resume
      await page
        .locator('tr:has-text("Paused")')
        .first()
        .getByRole('button', { name: 'Resume' })
        .click();
      await expect(page.getByText('Session resumed')).toBeVisible();
    }
  });

  test('cancels session', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Find a pending or active session
    const sessionRow = page.locator('tr:has-text("Pending"), tr:has-text("Active")').first();

    if (await sessionRow.isVisible().catch(() => false)) {
      await sessionRow.getByRole('button', { name: 'Cancel' }).click();

      // Confirm cancel
      await page.getByLabel('Reason (optional)').fill('Test cancellation');
      await page.click('text=Confirm Cancel');

      await expect(page.getByText('Session cancelled')).toBeVisible();
    }
  });

  test('filters sessions by status', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Filter by Active
    await page.getByLabel('Status').selectOption('active');

    // Should only show active sessions
    const rows = page.locator('table tbody tr');
    const count = await rows.count();

    for (let i = 0; i < count; i++) {
      await expect(rows.nth(i).locator('td').nth(1)).toHaveText('Active');
    }
  });

  test('searches sessions by user ID', async ({ page }) => {
    await page.click('text=Diagnostics');

    // Search
    await page.getByPlaceholder('Search by user/device ID').fill('test_user');
    await page.click('text=Search');

    // Results should contain search term
    const firstRow = page.locator('table tbody tr').first();
    if (await firstRow.isVisible().catch(() => false)) {
      await expect(firstRow).toContainText('test_user');
    }
  });
});

test.describe('Diagnostics - Logs & Traces', () => {
  test.beforeEach(async ({ page }) => {
    await loginAsAdmin(page);
    await page.click('text=Diagnostics');
  });

  test('views session logs', async ({ page }) => {
    // Click on a session with logs
    const sessionWithLogs = page.locator('tr:has([data-logs="true"])').first();
    if (await sessionWithLogs.isVisible().catch(() => false)) {
      await sessionWithLogs.click();

      // Click Logs tab
      await page.click('text=Logs');

      // Should show log entries
      await expect(page.locator('[data-testid="log-entry"]').first()).toBeVisible();

      // Check log level badges
      await expect(
        page.getByText('INFO').or(page.getByText('ERROR')).or(page.getByText('DEBUG'))
      ).toBeVisible();
    }
  });

  test('filters logs by level', async ({ page }) => {
    // Open a session and go to logs
    const sessionWithLogs = page.locator('tr:has([data-logs="true"])').first();
    if (await sessionWithLogs.isVisible().catch(() => false)) {
      await sessionWithLogs.click();
      await page.click('text=Logs');

      // Filter by ERROR
      await page.getByLabel('Log Level').selectOption('error');

      // All visible logs should be ERROR level
      const logs = page.locator('[data-testid="log-entry"]');
      const count = await logs.count();
      for (let i = 0; i < count; i++) {
        await expect(logs.nth(i).locator('[data-level]')).toHaveAttribute('data-level', 'error');
      }
    }
  });

  test('searches logs by message', async ({ page }) => {
    const sessionWithLogs = page.locator('tr:has([data-logs="true"])').first();
    if (await sessionWithLogs.isVisible().catch(() => false)) {
      await sessionWithLogs.click();
      await page.click('text=Logs');

      // Search
      await page.getByPlaceholder('Search logs...').fill('error');
      await page.click('text=Search');

      // Results should contain search term
      const firstLog = page.locator('[data-testid="log-entry"]').first();
      if (await firstLog.isVisible().catch(() => false)) {
        await expect(firstLog).toContainText('error');
      }
    }
  });

  test('views trace spans', async ({ page }) => {
    const sessionWithTraces = page.locator('tr:has([data-traces="true"])').first();
    if (await sessionWithTraces.isVisible().catch(() => false)) {
      await sessionWithTraces.click();
      await page.click('text=Traces');

      // Should show trace tree
      await expect(page.locator('[data-testid="trace-span"]').first()).toBeVisible();

      // Should show span details
      await expect(page.getByText('Duration')).toBeVisible();
      await expect(page.getByText('Status')).toBeVisible();
    }
  });

  test('expands trace span details', async ({ page }) => {
    const sessionWithTraces = page.locator('tr:has([data-traces="true"])').first();
    if (await sessionWithTraces.isVisible().catch(() => false)) {
      await sessionWithTraces.click();
      await page.click('text=Traces');

      // Click to expand first span
      const firstSpan = page.locator('[data-testid="trace-span"]').first();
      await firstSpan.click();

      // Should show span details
      await expect(page.getByText('Attributes')).toBeVisible();
      await expect(page.getByText('Events')).toBeVisible();
    }
  });
});

test.describe('Diagnostics - Screenshots', () => {
  test.beforeEach(async ({ page }) => {
    await loginAsAdmin(page);
    await page.click('text=Diagnostics');
  });

  test('views screenshots gallery', async ({ page }) => {
    const sessionWithScreenshots = page.locator('tr:has([data-screenshots="true"])').first();
    if (await sessionWithScreenshots.isVisible().catch(() => false)) {
      await sessionWithScreenshots.click();
      await page.click('text=Screenshots');

      // Should show screenshot thumbnails
      await expect(page.locator('[data-testid="screenshot-thumb"]').first()).toBeVisible();
    }
  });

  test('opens screenshot lightbox', async ({ page }) => {
    const sessionWithScreenshots = page.locator('tr:has([data-screenshots="true"])').first();
    if (await sessionWithScreenshots.isVisible().catch(() => false)) {
      await sessionWithScreenshots.click();
      await page.click('text=Screenshots');

      // Click first screenshot
      await page.locator('[data-testid="screenshot-thumb"]').first().click();

      // Lightbox should open
      await expect(page.locator('[data-testid="screenshot-lightbox"]')).toBeVisible();
      await expect(page.locator('[data-testid="screenshot-full"]').first()).toBeVisible();
    }
  });

  test('navigates between screenshots', async ({ page }) => {
    const sessionWithScreenshots = page.locator('tr:has([data-screenshots="true"])').first();
    if (await sessionWithScreenshots.isVisible().catch(() => false)) {
      await sessionWithScreenshots.click();
      await page.click('text=Screenshots');

      // Open lightbox
      await page.locator('[data-testid="screenshot-thumb"]').first().click();

      // Navigate next
      await page.click('text=Next');
      await expect(page.getByText('2 /')).toBeVisible();

      // Navigate prev
      await page.click('text=Previous');
      await expect(page.getByText('1 /')).toBeVisible();
    }
  });
});

test.describe('Diagnostics - End-to-End Flow', () => {
  test.beforeEach(async ({ page }) => {
    await loginAsAdmin(page);
  });

  test('full workflow: create → capture → analyze', async ({ page }) => {
    // 1. Create session
    await page.click('text=Diagnostics');
    await page.click('text=Create Session');

    const targetUserId = `test_user_${Date.now()}`;
    await page.getByLabel('Target User ID').fill(targetUserId);
    await page.getByLabel('Collection Level').selectOption('debug');
    await page.getByLabel('Capture Logs').check();
    await page.click('text=Start Session');

    await expect(page.getByText('Session created')).toBeVisible();

    // 2. Verify session appears in list
    await expect(page.locator('table tbody tr').first()).toContainText(targetUserId);

    // 3. Open session details
    await page.locator(`tr:has-text("${targetUserId}")`).first().click();
    await expect(page.getByText('Session Details')).toBeVisible();

    // 4. View logs (if any captured)
    await page.click('text=Logs');

    // 5. Pause session
    await page.click('text=Actions');
    await page.click('text=Pause');
    await expect(page.getByText('Session paused')).toBeVisible();

    // 6. Resume and complete
    await page.click('text=Actions');
    await page.click('text=Resume');
    await page.click('text=Actions');
    await page.click('text=Complete');
    await expect(page.getByText('Session completed')).toBeVisible();
  });

  test('error threshold triggers auto-notification', async ({ page }) => {
    // This would require backend simulation of error threshold
    // For E2E, we verify the UI handles the notification
    await page.click('text=Diagnostics');

    // Look for notification about high error rate
    const notification = page.locator('[data-testid="error-threshold-alert"]');
    if (await notification.isVisible().catch(() => false)) {
      await expect(notification).toContainText('High error rate detected');

      // Should offer to create debug session
      await notification.getByRole('button', { name: 'Start Debug Session' }).click();
      await expect(page.getByText('Create Debug Session')).toBeVisible();
    }
  });

  test('crash-triggered auto-session', async ({ page }) => {
    // Look for auto-created session after crash
    await page.click('text=Diagnostics');

    // Filter to show auto-created sessions
    await page.getByLabel('Source').selectOption('auto_crash');

    // Should show auto-created sessions
    const autoSession = page.locator('tr:has-text("Auto-created")').first();
    if (await autoSession.isVisible().catch(() => false)) {
      await expect(autoSession).toContainText('Crash detected');

      // Open and verify it has crash data
      await autoSession.click();
      await page.click('text=Logs');
      await expect(page.locator('[data-testid="log-entry"]')).toContainText('CRASH');
    }
  });
});