import { describe, it, expect, beforeEach, vi } from 'vitest'
import { mount } from '@vue/test-utils'
import { createPinia, setActivePinia } from 'pinia'
import { useUi } from '@/stores/useUi'
import { useTareasStore } from '@/stores/useTareas'
import TareasIndex from '../TareasIndex.vue'
import TablaTareas from '@/components/tareas/tablaTareas.vue'
import CardTarea from '@/components/tareas/cardTarea.vue'

// Mock child components
vi.mock('@/components/tareas/tablaTareas.vue', () => ({
  default: {
    name: 'TablaTareas',
    props: ['tareas'], // Match actual props
    emits: ['edit'],
    template: '<div data-testid="tabla-tareas"></div>',
  },
}))

vi.mock('@/components/tareas/cardTarea.vue', () => ({
  default: {
    name: 'CardTarea',
    props: ['tarea'], // Match actual props
    emits: ['edit'],
    template: '<div data-testid="card-tarea"></div>',
  },
}))

// Mock stores
const mockSetDefaultViewTareas = vi.fn();
const mockFetchTareas = vi.fn();

vi.mock('@/stores/useUi', () => ({
  useUi: vi.fn(() => ({
    defaultViewTareas: 'table', // Default mock value
    setDefaultViewTareas: mockSetDefaultViewTareas,
  })),
}))

vi.mock('@/stores/useTareas', () => ({
  useTareasStore: vi.fn(() => ({
    tareas: [],
    fetchTareas: mockFetchTareas,
  })),
}))

describe('TareasIndex.vue', () => {
  let uiStoreMock
  let tareasStoreMock

  beforeEach(() => {
    setActivePinia(createPinia())
    mockFetchTareas.mockClear().mockResolvedValue([])
    mockSetDefaultViewTareas.mockClear()

    uiStoreMock = useUi()
    tareasStoreMock = useTareasStore()
  })

  const mountComponent = () => {
    return mount(TareasIndex, {
      global: {},
    })
  }

  it('fetches tareas on mount', async () => {
    mountComponent()
    await mockFetchTareas(); // Ensure the promise from fetch resolves
    expect(mockFetchTareas).toHaveBeenCalledTimes(1)
  })

  describe('View Rendering based on useUi store', () => {
    it('renders TablaTareas when defaultViewTareas is "table"', async () => {
      uiStoreMock.defaultViewTareas = 'table'
      tareasStoreMock.tareas = [{ id: 1, titulo: 'Test Task', completada: false }]

      const wrapper = mountComponent()
      await mockFetchTareas();
      await wrapper.vm.$nextTick()
      await wrapper.vm.$nextTick()

      expect(wrapper.findComponent({ name: 'TablaTareas' }).exists()).toBe(true)
      const expected = [...tareasStoreMock.tareas].sort((a, b) => b.id - a.id)
      expect(wrapper.findComponent({ name: 'TablaTareas' }).props('tareas')).toEqual(expected)
      expect(wrapper.findComponent({ name: 'CardTarea' }).exists()).toBe(false)
    })

    it('renders CardTarea when defaultViewTareas is "card"', async () => {
      uiStoreMock.defaultViewTareas = 'card'
      tareasStoreMock.tareas = [{ id: 1, T1: 'T1' }, { id: 2, T2: 'T2' }]

      const wrapper = mountComponent()
      await mockFetchTareas();
      await wrapper.vm.$nextTick()
      await wrapper.vm.$nextTick()

      const cardWrappers = wrapper.findAllComponents({ name: 'CardTarea' })
      const expected = [...tareasStoreMock.tareas].sort((a, b) => b.id - a.id)
      expect(cardWrappers.length).toBe(expected.length)
      expect(cardWrappers[0].props('tarea')).toEqual(expected[0])
      expect(wrapper.findComponent({ name: 'TablaTareas' }).exists()).toBe(false)
    })

    it('renders no data message for table view when no tareas exist', async () => {
        uiStoreMock.defaultViewTareas = 'table';
        tareasStoreMock.tareas = [];

        const wrapper = mountComponent();
        await mockFetchTareas();
        await wrapper.vm.$nextTick();
        await wrapper.vm.$nextTick();

        expect(wrapper.findComponent({ name: 'TablaTareas' }).exists()).toBe(true);
        expect(wrapper.text()).toContain('No hay tareas para mostrar');
    });

    it('renders no data message for card view when no tareas exist', async () => {
        uiStoreMock.defaultViewTareas = 'card';
        tareasStoreMock.tareas = [];

        const wrapper = mountComponent();
        await mockFetchTareas();
        await wrapper.vm.$nextTick();
        await wrapper.vm.$nextTick();

        expect(wrapper.findAllComponents({ name: 'CardTarea' }).length).toBe(0);
        expect(wrapper.text()).toContain('No hay tareas para mostrar');
    });
  })

  describe('Local View Toggle Buttons', () => {
    it('renders toggle buttons and reflects initial view from store (table)', async () => {
      uiStoreMock.defaultViewTareas = 'table';
      const wrapper = mountComponent();
      await mockFetchTareas();
      await wrapper.vm.$nextTick();
      await wrapper.vm.$nextTick();

      const tableViewButton = wrapper.find('button[aria-label="Table View"]');
      const cardViewButton = wrapper.find('button[aria-label="Card View"]');

      expect(tableViewButton.exists()).toBe(true);
      expect(cardViewButton.exists()).toBe(true);
      expect(tableViewButton.classes()).toContain('bg-[var(--accent-color-tareas)]');
      expect(cardViewButton.classes()).toContain('bg-gray-200');
    });

    it('renders toggle buttons and reflects initial view from store (card)', async () => {
      uiStoreMock.defaultViewTareas = 'card';
      const wrapper = mountComponent();
      await mockFetchTareas();
      await wrapper.vm.$nextTick();
      await wrapper.vm.$nextTick();

      const tableViewButton = wrapper.find('button[aria-label="Table View"]');
      const cardViewButton = wrapper.find('button[aria-label="Card View"]');

      expect(cardViewButton.classes()).toContain('bg-[var(--accent-color-tareas)]');
      expect(tableViewButton.classes()).toContain('bg-gray-200');
    });

    it('switches to card view on button click and updates button styles, does not call global store action', async () => {
      uiStoreMock.defaultViewTareas = 'table';
      tareasStoreMock.tareas = [{ id: 1, titulo: 'Test' }];
      const wrapper = mountComponent();
      await mockFetchTareas();
      await wrapper.vm.$nextTick();
      await wrapper.vm.$nextTick();

      const cardViewButton = wrapper.find('button[aria-label="Card View"]');
      const tableViewButton = wrapper.find('button[aria-label="Table View"]');

      await cardViewButton.trigger('click');
      await wrapper.vm.$nextTick();

      expect(wrapper.findComponent({ name: 'CardTarea' }).exists()).toBe(true);
      expect(wrapper.findComponent({ name: 'TablaTareas' }).exists()).toBe(false);
      expect(cardViewButton.classes()).toContain('bg-[var(--accent-color-tareas)]');
      expect(tableViewButton.classes()).toContain('bg-gray-200');
      expect(mockSetDefaultViewTareas).not.toHaveBeenCalled();
    });

    it('switches back to table view on button click and updates button styles, does not call global store action', async () => {
      uiStoreMock.defaultViewTareas = 'card'; // Start with card view
      tareasStoreMock.tareas = [{ id: 1, titulo: 'Test' }];
      const wrapper = mountComponent();
      await mockFetchTareas();
      await wrapper.vm.$nextTick();
      await wrapper.vm.$nextTick();

      const cardViewButton = wrapper.find('button[aria-label="Card View"]');
      const tableViewButton = wrapper.find('button[aria-label="Table View"]');
      expect(cardViewButton.classes()).toContain('bg-[var(--accent-color-tareas)]');

      await tableViewButton.trigger('click');
      await wrapper.vm.$nextTick();

      expect(wrapper.findComponent({ name: 'TablaTareas' }).exists()).toBe(true);
      expect(wrapper.findComponent({ name: 'CardTarea' }).exists()).toBe(false);
      expect(tableViewButton.classes()).toContain('bg-[var(--accent-color-tareas)]');
      expect(cardViewButton.classes()).toContain('bg-gray-200');
      expect(mockSetDefaultViewTareas).not.toHaveBeenCalled();
    });
  });
})