import { render, screen, waitFor } from '@testing-library/react';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { Sessions } from '@/pages/Sessions';
import { useOpencodeStore } from '@/stores/opencode';

const hostApiFetchMock = vi.fn();

vi.mock('@/lib/host-api', () => ({
  hostApiFetch: (...args: unknown[]) => hostApiFetchMock(...args),
  ensureHostApiToken: vi.fn().mockResolvedValue('test-token'),
}));

vi.mock('@/lib/api-client', () => ({
  invokeIpc: vi.fn(),
}));

describe('Sessions page', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    useOpencodeStore.setState({
      status: { state: 'stopped', port: 4096 },
      health: null,
      runtimeConfigSummary: null,
      projects: [],
      activeProject: null,
      sessions: [],
      sessionsByProjectId: {},
      selectedSessionId: null,
      sessionStatuses: {},
      sessionMessages: [],
      sessionMessagesBySessionId: {},
      streamingMessage: null,
      streamingMessagesBySessionId: {},
      streamingTools: [],
      streamingToolsBySessionId: {},
      sendingSessionId: null,
      sendingSessionIds: {},
      queuedSessionPrompts: {},
      runtimeAutoStartAttempted: false,
      loading: false,
      error: null,
    });
  });

  it('renders sessions for the active project without exposing the runtime brand', async () => {
    const activeProject = {
      id: 'prj_1',
      path: 'D:/repo/packages/ui',
      name: 'ui',
      createdAt: '2026-05-12T00:00:00.000Z',
      updatedAt: '2026-05-12T00:00:00.000Z',
      lastOpenedAt: '2026-05-12T00:00:00.000Z',
    };
    hostApiFetchMock.mockImplementation(async (path: string) => {
      if (path === '/api/opencode/projects') {
        return { projects: [activeProject], activeProject };
      }
      if (path === '/api/opencode/status') {
        return { state: 'running', port: 4096, url: 'http://127.0.0.1:4096' };
      }
      if (path === '/api/opencode/sessions') {
        return {
          sessions: [
            {
              id: 'ses_1',
              title: 'Implement login',
              updatedAt: '2026-05-12T08:30:00.000Z',
            },
          ],
        };
      }
      throw new Error(`Unexpected path ${path}`);
    });

    render(<Sessions />);

    await waitFor(() => expect(screen.getByText('Implement login')).toBeInTheDocument());
    expect(screen.getByText('D:/repo/packages/ui')).toBeInTheDocument();
    expect(document.body.textContent).not.toMatch(/opencode/i);
    expect(hostApiFetchMock).toHaveBeenCalledWith('/api/opencode/sessions');
  });

  it('shows a project selection empty state when no project is active', async () => {
    hostApiFetchMock.mockImplementation(async (path: string) => {
      if (path === '/api/opencode/projects') {
        return { projects: [], activeProject: null };
      }
      if (path === '/api/opencode/status') {
        return { state: 'running', port: 4096, url: 'http://127.0.0.1:4096' };
      }
      throw new Error(`Unexpected path ${path}`);
    });

    render(<Sessions />);

    await waitFor(() => expect(screen.getByText('Select a project to view sessions')).toBeInTheDocument());
    expect(hostApiFetchMock).not.toHaveBeenCalledWith('/api/opencode/sessions');
  });
});