import { describe, it, expect, vi } from 'vitest';
import { render, screen } from '@testing-library/svelte';
import { userEvent } from '@testing-library/user-event';
import DayMealCard from './DayMealCard.svelte';

const slot = {
	id: 's1',
	slotDate: '2026-03-30',
	recipe: { id: 'r1', name: 'Pasta Bolognese', effort: 'Easy', cookTimeMin: 30 }
};

describe('DayMealCard', () => {
	it('renders recipe name', () => {
		render(DayMealCard, { props: { slot, isToday: false, readonly: false } });
		expect(screen.getByText('Pasta Bolognese')).toBeTruthy();
	});

	it('shows Jetzt kochen link and Tauschen button when not readonly and onaddrecipe provided', () => {
		render(DayMealCard, { props: { slot, isToday: false, readonly: false, onaddrecipe: vi.fn() } });
		expect(screen.getByRole('link', { name: /Jetzt kochen/i })).toBeTruthy();
		expect(screen.getByRole('button', { name: /Tauschen/i })).toBeTruthy();
	});

	it('Tauschen button calls onaddrecipe when clicked', async () => {
		const onaddrecipe = vi.fn();
		const user = userEvent.setup();
		render(DayMealCard, { props: { slot, isToday: false, readonly: false, onaddrecipe } });
		await user.click(screen.getByRole('button', { name: /Tauschen/i }));
		expect(onaddrecipe).toHaveBeenCalledOnce();
	});

	it('hides Tauschen button when onaddrecipe not provided', () => {
		render(DayMealCard, { props: { slot, isToday: false, readonly: false } });
		expect(screen.queryByRole('button', { name: /Tauschen/i })).toBeNull();
	});

	it('hides action links when readonly', () => {
		render(DayMealCard, { props: { slot, isToday: false, readonly: true, onaddrecipe: vi.fn() } });
		expect(screen.queryByRole('link', { name: /Jetzt kochen/i })).toBeNull();
		expect(screen.queryByRole('button', { name: /Tauschen/i })).toBeNull();
	});

	it('applies today styling when isToday is true', () => {
		render(DayMealCard, { props: { slot, isToday: true, readonly: false } });
		const card = screen.getByTestId('day-meal-card');
		expect(card.getAttribute('data-today')).toBe('true');
	});

	it('applies selected styling when isSelected is true and not today', () => {
		render(DayMealCard, { props: { slot, isToday: false, isSelected: true, readonly: false } });
		const card = screen.getByTestId('day-meal-card');
		expect(card.getAttribute('data-selected')).toBe('true');
	});

	it('renders empty state when slot has no recipe', () => {
		render(DayMealCard, { props: { slot: { id: 's2', slotDate: '2026-03-31', recipe: null }, isToday: false, readonly: false } });
		expect(screen.getByText(/Kein Gericht/i)).toBeTruthy();
	});

	it('shows cook time and effort metadata', () => {
		render(DayMealCard, { props: { slot, isToday: false, readonly: false } });
		expect(screen.getByText(/30 Min/)).toBeTruthy();
		expect(screen.getByText(/Easy/)).toBeTruthy();
	});

	it('empty state shows add button when onaddrecipe provided', () => {
		const onaddrecipe = vi.fn();
		render(DayMealCard, { props: { slot: { id: 's2', slotDate: '2026-03-31', recipe: null }, isToday: false, readonly: false, onaddrecipe } });
		expect(screen.getByRole('button', { name: /Gericht hinzufügen/i })).toBeTruthy();
	});

	it('add button calls onaddrecipe when clicked', async () => {
		const onaddrecipe = vi.fn();
		const user = userEvent.setup();
		render(DayMealCard, { props: { slot: { id: 's2', slotDate: '2026-03-31', recipe: null }, isToday: false, readonly: false, onaddrecipe } });
		await user.click(screen.getByRole('button', { name: /Gericht hinzufügen/i }));
		expect(onaddrecipe).toHaveBeenCalledOnce();
	});

	it('empty state hides add button when onaddrecipe not provided', () => {
		render(DayMealCard, { props: { slot: { id: 's2', slotDate: '2026-03-31', recipe: null }, isToday: false, readonly: false } });
		expect(screen.queryByRole('button', { name: /Gericht hinzufügen/i })).toBeNull();
	});
});