import { init_game, bake_items, is_menu_item_enabled } from './game.js';

describe('init_game', () => {
  test('should create a new game state with default values', () => {
    const game = init_game();
    
    expect(game.player_money).toBe(0);
    expect(game.time.day).toBe(1);
    expect(game.time.phase).toBe('planning');
    expect(game.oven.capacity).toBe(4);
    expect(game.oven.used).toBe(0);
  });

  test('should start with zero supplies', () => {
    const game = init_game();
    
    expect(game.supplies.flour).toBe(0);
    expect(game.supplies.eggs).toBe(0);
    expect(game.supplies.sugar).toBe(0);
  });
});

describe('is_menu_item_enabled', () => {
  test('should return false when supplies are insufficient', () => {
    const game = init_game();
    // No supplies, so nothing should be enabled
    expect(is_menu_item_enabled(game, 'bread')).toBe(false);
    expect(is_menu_item_enabled(game, 'cookies')).toBe(false);
  });

  test('should return true when supplies are sufficient', () => {
    const game = init_game();
    // Add enough supplies for bread (flour: 2, yeast: 1, milk: 1)
    game.supplies.flour = 10;
    game.supplies.yeast = 5;
    game.supplies.milk = 5;
    
    expect(is_menu_item_enabled(game, 'bread')).toBe(true);
  });

  test('should return false for non-existent menu item', () => {
    const game = init_game();
    expect(is_menu_item_enabled(game, 'pizza')).toBe(false);
  });
});

describe('bake_items', () => {
  test('should deduct ingredients when baking', () => {
    const game = init_game();
    // Add supplies for bread
    game.supplies.flour = 10;
    game.supplies.yeast = 5;
    game.supplies.milk = 5;
    
    const result = bake_items(game, 'bread');
    
    // Bread uses: flour: 2, yeast: 1, milk: 1
    expect(result.supplies.flour).toBe(8);
    expect(result.supplies.yeast).toBe(4);
    expect(result.supplies.milk).toBe(4);
  });

  test('should increase oven used slots', () => {
    const game = init_game();
    game.supplies.flour = 10;
    game.supplies.yeast = 5;
    game.supplies.milk = 5;
    
    const result = bake_items(game, 'bread');
    
    // Bread uses 1 oven slot
    expect(result.oven.used).toBe(1);
  });

  test('should not mutate the original game state', () => {
    const game = init_game();
    game.supplies.flour = 10;
    game.supplies.yeast = 5;
    game.supplies.milk = 5;
    
    bake_items(game, 'bread');
    
    // Original should be unchanged
    expect(game.supplies.flour).toBe(10);
    expect(game.oven.used).toBe(0);
  });
});