import { render, screen, fireEvent } from '@testing-library/react-native';
import { ActivityCard } from './ActivityCard';
import type { Activity } from '@repo/core';

describe('ActivityCard', () => {
  const mockActivity: Activity = {
    id: '1',
    name: 'Morning Run',
    type: 'run',
    distance: 5000,
    duration: 1800,
    startTime: new Date(),
  };

  it('renders activity name and stats', () => {
    render(<ActivityCard activity={mockActivity} />);

    expect(screen.getByText('Morning Run')).toBeTruthy();
    expect(screen.getByText('5.00 km')).toBeTruthy();
    expect(screen.getByText('30:00')).toBeTruthy();
  });

  it('calls onPress when pressed', () => {
    const onPress = jest.fn();
    render(<ActivityCard activity={mockActivity} onPress={onPress} />);

    fireEvent.press(screen.getByRole('button'));
    expect(onPress).toHaveBeenCalledWith('1');
  });
});

import { renderHook, waitFor } from "@testing-library/react-native";
import { useActivityRecorder } from "./useActivityRecorder";

describe("useActivityRecorder", () => {
  it("starts in ready state", () => {
    const { result } = renderHook(() => useActivityRecorder("running"));

    expect(result.current.state).toBe("ready");
  });

  it("transitions to recording when started", async () => {
    const { result } = renderHook(() => useActivityRecorder("running"));

    act(() => {
      result.current.start();
    });

    await waitFor(() => {
      expect(result.current.state).toBe("recording");
    });
  });
});

import { calculateTSS } from "./calculations";

describe("calculateTSS", () => {
  it("calculates TSS correctly for 1 hour at FTP", () => {
    const tss = calculateTSS({
      normalizedPower: 250,
      duration: 3600,
      ftp: 250,
    });

    expect(tss).toBe(100);
  });

  it("returns 0 for zero duration", () => {
    const tss = calculateTSS({
      normalizedPower: 250,
      duration: 0,
      ftp: 250,
    });

    expect(tss).toBe(0);
  });
});