/**
 * Evidence Panel Micro-Interactions E2E Tests
 * SPRINT_0341_0001_0001 - T8: Playwright tests for EvidencePanel micro-interactions
 * 
 * Tests the "Verify locally" commands, copy affordances, and ProofSpine interactions.
 */

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

// Test fixtures for deterministic evidence data
const MOCK_EVIDENCE = {
  digest: 'sha256:abc123def456',
  artifactPurl: 'pkg:oci/myimage@sha256:abc123def456',
  sbomDigest: 'sha256:sbom789012',
  rekorLogIndex: 12345678,
  rekorLogId: 'test-rekor-log-id',
  bundleDigest: 'sha256:bundle456789'
};

test.describe('Evidence Panel - Verify Locally Commands', () => {
  test.beforeEach(async ({ page }) => {
    // Navigate to evidence panel with mock data
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    
    // Wait for evidence panel to load
    await page.waitForSelector('.evidence-panel');
    
    // Navigate to Linkset tab
    await page.click('[role="tab"]:has-text("Linkset")');
    await page.waitForSelector('.linkset-panel');
  });

  test('should display verify locally section when linkset has verification data', async ({ page }) => {
    // Arrange - Wait for verify section
    const verifySection = page.locator('.linkset-panel__verify');
    
    // Assert
    await expect(verifySection).toBeVisible();
    await expect(verifySection.locator('h4')).toHaveText('Verify Locally');
    await expect(verifySection.locator('.linkset-panel__verify-description')).toContainText(
      'independently verify the evidence chain'
    );
  });

  test('should display artifact signature verification command', async ({ page }) => {
    // Arrange
    const verifyCommands = page.locator('.verify-command');
    
    // Find the artifact signature command
    const signatureCommand = verifyCommands.filter({ hasText: 'Verify Artifact Signature' });
    
    // Assert
    await expect(signatureCommand).toBeVisible();
    await expect(signatureCommand.locator('.verify-command__description')).toContainText('Cosign');
    
    // The command should contain the artifact reference
    const codeBlock = signatureCommand.locator('.verify-command__code code');
    await expect(codeBlock).toContainText('cosign verify');
  });

  test('should display SBOM attestation verification command', async ({ page }) => {
    // Arrange
    const verifyCommands = page.locator('.verify-command');
    
    // Find the SBOM attestation command
    const sbomCommand = verifyCommands.filter({ hasText: 'Verify SBOM Attestation' });
    
    // Assert
    await expect(sbomCommand).toBeVisible();
    await expect(sbomCommand.locator('.verify-command__description')).toContainText('attestation');
    
    // The command should contain the predicate type
    const codeBlock = sbomCommand.locator('.verify-command__code code');
    await expect(codeBlock).toContainText('--type spdxjson');
  });

  test('should display Rekor transparency verification command when available', async ({ page }) => {
    // Arrange
    const verifyCommands = page.locator('.verify-command');
    
    // Find the Rekor command
    const rekorCommand = verifyCommands.filter({ hasText: 'Verify Transparency Log' });
    
    // Assert
    await expect(rekorCommand).toBeVisible();
    await expect(rekorCommand.locator('.verify-command__description')).toContainText('Rekor');
    
    // The command should contain rekor-cli
    const codeBlock = rekorCommand.locator('.verify-command__code code');
    await expect(codeBlock).toContainText('rekor-cli get');
  });

  test('should display policy decision verification command', async ({ page }) => {
    // Arrange
    const verifyCommands = page.locator('.verify-command');
    
    // Find the policy command
    const policyCommand = verifyCommands.filter({ hasText: 'Verify Policy Decision' });
    
    // Assert
    await expect(policyCommand).toBeVisible();
    
    // The command should contain stella policy
    const codeBlock = policyCommand.locator('.verify-command__code code');
    await expect(codeBlock).toContainText('stella policy verify');
  });
});

test.describe('Evidence Panel - Copy Interactions', () => {
  test.beforeEach(async ({ page }) => {
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.waitForSelector('.evidence-panel');
    await page.click('[role="tab"]:has-text("Linkset")');
    await page.waitForSelector('.linkset-panel__verify');
  });

  test('should copy verification command on copy button click', async ({ page }) => {
    // Arrange
    const copyButton = page.locator('.verify-command__copy').first();
    
    // Act
    await copyButton.click();
    
    // Assert - button should show "Copied!" state
    await expect(copyButton).toHaveText('Copied!');
    await expect(copyButton).toHaveClass(/copied/);
  });

  test('should reset copy button state after delay', async ({ page }) => {
    // Arrange
    const copyButton = page.locator('.verify-command__copy').first();
    
    // Act
    await copyButton.click();
    await expect(copyButton).toHaveText('Copied!');
    
    // Wait for reset (typically 2-3 seconds)
    await page.waitForTimeout(3500);
    
    // Assert - button should reset to "Copy"
    await expect(copyButton).toHaveText('Copy');
    await expect(copyButton).not.toHaveClass(/copied/);
  });

  test('should copy correct command text to clipboard', async ({ page, context }) => {
    // Grant clipboard permissions
    await context.grantPermissions(['clipboard-read', 'clipboard-write']);
    
    // Arrange
    const firstCommand = page.locator('.verify-command').first();
    const expectedCommand = await firstCommand.locator('.verify-command__code code').textContent();
    
    // Act
    await firstCommand.locator('.verify-command__copy').click();
    
    // Assert - check clipboard content
    const clipboardText = await page.evaluate(() => navigator.clipboard.readText());
    expect(clipboardText).toBe(expectedCommand?.trim());
  });

  test('should be keyboard accessible', async ({ page }) => {
    // Arrange
    const copyButton = page.locator('.verify-command__copy').first();
    
    // Act - focus and press Enter
    await copyButton.focus();
    await page.keyboard.press('Enter');
    
    // Assert
    await expect(copyButton).toHaveText('Copied!');
  });

  test('should have proper aria-label for copy button', async ({ page }) => {
    // Arrange
    const copyButton = page.locator('.verify-command__copy').first();
    
    // Assert - initial state
    await expect(copyButton).toHaveAttribute('aria-label', 'Copy command');
    
    // Act
    await copyButton.click();
    
    // Assert - copied state
    await expect(copyButton).toHaveAttribute('aria-label', 'Copied!');
  });
});

test.describe('Evidence Panel - ProofSpine Component', () => {
  test.beforeEach(async ({ page }) => {
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.waitForSelector('.evidence-panel');
    await page.click('[role="tab"]:has-text("Linkset")');
  });

  test('should display bundle hash in ProofSpine', async ({ page }) => {
    // The ProofSpine should show the evidence bundle digest
    const proofSpine = page.locator('.linkset-panel__provenance');
    
    await expect(proofSpine).toBeVisible();
    // Check for bundle hash display
    const bundleHash = proofSpine.locator('code').filter({ hasText: /sha256:/ });
    await expect(bundleHash.first()).toBeVisible();
  });

  test('should truncate long hashes with copy on click', async ({ page }) => {
    // Find truncated hash
    const truncatedHash = page.locator('.linkset-panel__provenance code').first();
    
    // Verify it shows truncated form
    const text = await truncatedHash.textContent();
    expect(text?.length).toBeLessThan(64); // SHA256 is 64 chars
  });
});

test.describe('Evidence Panel - Tab Navigation', () => {
  test.beforeEach(async ({ page }) => {
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.waitForSelector('.evidence-panel');
  });

  test('should support keyboard navigation between tabs', async ({ page }) => {
    // Focus first tab
    const firstTab = page.locator('[role="tab"]').first();
    await firstTab.focus();
    
    // Press right arrow to move to next tab
    await page.keyboard.press('ArrowRight');
    
    // Verify focus moved
    const focusedElement = page.locator(':focus');
    await expect(focusedElement).toHaveAttribute('role', 'tab');
  });

  test('should announce tab content changes to screen readers', async ({ page }) => {
    // The tabpanel should have proper aria attributes
    const tabpanel = page.locator('[role="tabpanel"]');
    
    await expect(tabpanel).toHaveAttribute('aria-label');
  });
});

test.describe('Evidence Panel - Responsive Behavior', () => {
  test('should stack verify commands on mobile viewport', async ({ page }) => {
    // Set mobile viewport
    await page.setViewportSize({ width: 375, height: 667 });
    
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.waitForSelector('.evidence-panel');
    await page.click('[role="tab"]:has-text("Linkset")');
    
    // Verify commands container should be flex column
    const commandsContainer = page.locator('.verify-commands');
    
    const display = await commandsContainer.evaluate((el) => 
      window.getComputedStyle(el).flexDirection
    );
    
    expect(display).toBe('column');
  });

  test('should wrap long command text on small screens', async ({ page }) => {
    // Set small viewport
    await page.setViewportSize({ width: 375, height: 667 });
    
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.click('[role="tab"]:has-text("Linkset")');
    
    // Command code should wrap
    const codeBlock = page.locator('.verify-command__code').first();
    
    const whiteSpace = await codeBlock.evaluate((el) => 
      window.getComputedStyle(el).whiteSpace
    );
    
    expect(whiteSpace).toBe('pre-wrap');
  });
});

test.describe('Evidence Panel - Error States', () => {
  test('should not show verify section when no verification data available', async ({ page }) => {
    // Navigate to evidence without Rekor/signature data
    await page.goto('/evidence?digest=sha256:nosig123');
    await page.waitForSelector('.evidence-panel');
    await page.click('[role="tab"]:has-text("Linkset")');
    
    // Verify section should be hidden or empty
    const verifySection = page.locator('.linkset-panel__verify');
    
    // Either hidden or shows no commands
    const verifyCommands = page.locator('.verify-command');
    const count = await verifyCommands.count();
    
    if (count === 0) {
      await expect(verifySection).not.toBeVisible();
    }
  });

  test('should handle clipboard API failure gracefully', async ({ page, context }) => {
    // Deny clipboard permissions
    await context.clearPermissions();
    
    await page.goto('/evidence?digest=' + MOCK_EVIDENCE.digest);
    await page.click('[role="tab"]:has-text("Linkset")');
    
    // Click copy - should not crash
    const copyButton = page.locator('.verify-command__copy').first();
    await copyButton.click();
    
    // Should show error state or fallback
    // Implementation may vary - check it doesn't throw
    await expect(page.locator('.evidence-panel')).toBeVisible();
  });
});