import { browser, expect } from '@wdio/globals';

// Phase C — UI Interaction Tests (C1–C4)
// Command palette, search overlay, notification center, keyboard navigation.

// ─── Helpers ──────────────────────────────────────────────────────────

/** Open command palette via Ctrl+K. */
async function openPalette(): Promise<void> {
  await browser.execute(() => document.body.focus());
  await browser.pause(100);
  await browser.keys(['Control', 'k']);
  const palette = await browser.$('[data-testid="command-palette"]');
  await palette.waitForDisplayed({ timeout: 3000 });
}

/** Close command palette via Escape. */
async function closePalette(): Promise<void> {
  await browser.keys('Escape');
  await browser.pause(300);
}

/** Type into palette input and get filtered results. */
async function paletteSearch(query: string): Promise<string[]> {
  const input = await browser.$('[data-testid="palette-input"]');
  await input.setValue(query);
  await browser.pause(300);
  return browser.execute(() => {
    const items = document.querySelectorAll('.palette-item .cmd-label');
    return Array.from(items).map(el => el.textContent?.trim() ?? '');
  });
}

// ─── Scenario C1: Command Palette — Hardening Commands ────────────────

describe('Scenario C1 — Command Palette Hardening Commands', () => {
  afterEach(async () => {
    // Ensure palette is closed after each test
    try {
      const isVisible = await browser.execute(() => {
        const el = document.querySelector('[data-testid="command-palette"]');
        return el !== null && window.getComputedStyle(el).display !== 'none';
      });
      if (isVisible) {
        await closePalette();
      }
    } catch {
      // Ignore if palette doesn't exist
    }
  });

  it('should find settings command in palette', async () => {
    await openPalette();
    const results = await paletteSearch('settings');
    expect(results.length).toBeGreaterThanOrEqual(1);
    const hasSettings = results.some(r => r.toLowerCase().includes('settings'));
    expect(hasSettings).toBe(true);
  });

  it('should find terminal command in palette', async () => {
    await openPalette();
    const results = await paletteSearch('terminal');
    expect(results.length).toBeGreaterThanOrEqual(1);
    const hasTerminal = results.some(r => r.toLowerCase().includes('terminal'));
    expect(hasTerminal).toBe(true);
  });

  it('should find keyboard shortcuts command in palette', async () => {
    await openPalette();
    const results = await paletteSearch('keyboard');
    expect(results.length).toBeGreaterThanOrEqual(1);
    const hasShortcuts = results.some(r => r.toLowerCase().includes('keyboard'));
    expect(hasShortcuts).toBe(true);
  });

  it('should list all commands grouped by category when input is empty', async () => {
    await openPalette();
    const input = await browser.$('[data-testid="palette-input"]');
    await input.clearValue();
    await browser.pause(200);

    const itemCount = await browser.execute(() =>
      document.querySelectorAll('.palette-item').length,
    );
    // v3 has 18+ commands
    expect(itemCount).toBeGreaterThanOrEqual(10);

    // Commands should be organized in groups (categories)
    const groups = await browser.execute(() => {
      const headers = document.querySelectorAll('.palette-category');
      return Array.from(headers).map(h => h.textContent?.trim() ?? '');
    });
    // Should have at least 2 command groups
    expect(groups.length).toBeGreaterThanOrEqual(2);
  });
});

// ─── Scenario C2: Search Overlay (Ctrl+Shift+F) ──────────────────────

describe('Scenario C2 — Search Overlay (FTS5)', () => {
  it('should open search overlay with Ctrl+Shift+F', async () => {
    await browser.execute(() => document.body.focus());
    await browser.pause(100);
    await browser.keys(['Control', 'Shift', 'f']);
    await browser.pause(500);

    const overlay = await browser.execute(() => {
      // SearchOverlay uses .search-overlay class
      const el = document.querySelector('.search-overlay, [data-testid="search-overlay"]');
      return el !== null;
    });
    expect(overlay).toBe(true);
  });

  it('should have search input focused', async () => {
    const isFocused = await browser.execute(() => {
      const input = document.querySelector('.search-overlay input, [data-testid="search-input"]') as HTMLInputElement | null;
      if (!input) return false;
      input.focus();
      return input === document.activeElement;
    });
    expect(isFocused).toBe(true);
  });

  it('should show no results for nonsense query', async () => {
    await browser.execute(() => {
      const input = document.querySelector('.search-overlay input, [data-testid="search-input"]') as HTMLInputElement | null;
      if (input) {
        input.value = 'zzz_nonexistent_xyz_999';
        input.dispatchEvent(new Event('input', { bubbles: true }));
      }
    });
    await browser.pause(500); // 300ms debounce + render time

    const resultCount = await browser.execute(() => {
      const results = document.querySelectorAll('.search-result, .search-result-item');
      return results.length;
    });
    expect(resultCount).toBe(0);
  });

  it('should close search overlay with Escape', async () => {
    await browser.keys('Escape');
    await browser.pause(300);

    const overlay = await browser.execute(() => {
      const el = document.querySelector('.search-overlay, [data-testid="search-overlay"]');
      if (!el) return false;
      const style = window.getComputedStyle(el);
      return style.display !== 'none' && style.visibility !== 'hidden';
    });
    expect(overlay).toBe(false);
  });
});

// ─── Scenario C3: Notification Center ─────────────────────────────────

describe('Scenario C3 — Notification Center', () => {
  it('should render notification bell in status bar', async () => {
    const hasBell = await browser.execute(() => {
      const bar = document.querySelector('[data-testid="status-bar"]');
      // NotificationCenter is in status bar with bell icon
      const bell = bar?.querySelector('.notification-bell, .bell-icon, [data-testid="notification-bell"]');
      return bell !== null;
    });
    expect(hasBell).toBe(true);
  });

  it('should open notification panel on bell click', async () => {
    await browser.execute(() => {
      const bell = document.querySelector('.notification-bell, .bell-icon, [data-testid="notification-bell"]');
      if (bell) (bell as HTMLElement).click();
    });
    await browser.pause(300);

    const panelOpen = await browser.execute(() => {
      const panel = document.querySelector('.notification-panel, .notification-dropdown, [data-testid="notification-panel"]');
      if (!panel) return false;
      const style = window.getComputedStyle(panel);
      return style.display !== 'none';
    });
    expect(panelOpen).toBe(true);
  });

  it('should show empty state or notification history', async () => {
    const content = await browser.execute(() => {
      const panel = document.querySelector('.notification-panel, .notification-dropdown, [data-testid="notification-panel"]');
      return panel?.textContent ?? '';
    });
    // Panel should have some text content (either "No notifications" or actual notifications)
    expect(content.length).toBeGreaterThan(0);
  });

  it('should close notification panel on outside click', async () => {
    // Click the backdrop overlay to close the panel
    await browser.execute(() => {
      const backdrop = document.querySelector('.notification-center .backdrop');
      if (backdrop) (backdrop as HTMLElement).click();
    });
    await browser.pause(300);

    const panelOpen = await browser.execute(() => {
      const panel = document.querySelector('.notification-panel, .notification-dropdown, [data-testid="notification-panel"]');
      if (!panel) return false;
      const style = window.getComputedStyle(panel);
      return style.display !== 'none';
    });
    expect(panelOpen).toBe(false);
  });
});

// ─── Scenario C4: Keyboard Navigation ────────────────────────────────

describe('Scenario C4 — Keyboard-First Navigation', () => {
  it('should toggle settings with Ctrl+Comma', async () => {
    await browser.execute(() => document.body.focus());
    await browser.pause(100);
    await browser.keys(['Control', ',']);
    await browser.pause(500);

    const settingsVisible = await browser.execute(() => {
      const panel = document.querySelector('.sidebar-panel');
      if (!panel) return false;
      const style = window.getComputedStyle(panel);
      return style.display !== 'none';
    });
    expect(settingsVisible).toBe(true);

    // Close it
    await browser.keys('Escape');
    await browser.pause(300);
  });

  it('should toggle sidebar with Ctrl+B', async () => {
    await browser.execute(() => document.body.focus());
    await browser.pause(100);

    // First open settings to have sidebar content
    await browser.keys(['Control', ',']);
    await browser.pause(300);

    const initialState = await browser.execute(() => {
      const panel = document.querySelector('.sidebar-panel');
      return panel !== null && window.getComputedStyle(panel).display !== 'none';
    });

    // Toggle sidebar
    await browser.keys(['Control', 'b']);
    await browser.pause(300);

    const afterToggle = await browser.execute(() => {
      const panel = document.querySelector('.sidebar-panel');
      if (!panel) return false;
      return window.getComputedStyle(panel).display !== 'none';
    });

    // State should have changed
    if (initialState) {
      expect(afterToggle).toBe(false);
    }

    // Clean up — close sidebar if still open
    await browser.keys('Escape');
    await browser.pause(200);
  });

  it('should focus project with Alt+1', async () => {
    await browser.execute(() => document.body.focus());
    await browser.pause(100);
    await browser.keys(['Alt', '1']);
    await browser.pause(300);

    const hasActive = await browser.execute(() => {
      const active = document.querySelector('.project-box.active');
      return active !== null;
    });
    expect(hasActive).toBe(true);
  });
});