import { mount } from '@vue/test-utils';
import LabeledSelect from '@shell/components/form/LabeledSelect.vue';
import { defineComponent } from 'vue';

describe('component: LabeledSelect', () => {
  describe('should display correct label', () => {
    it('given an existing value and option', () => {
      const label = 'Foo';
      const value = 'foo';
      const wrapper = mount(LabeledSelect, {
        props: {
          value,
          options: [
            { label, value },
          ],
        }
      });

      // Component is from a library and class is not going to be changed
      expect(wrapper.find('.vs__selected').text()).toBe(label);
    });

    it('using value as label if no options', () => {
      const value = 'foo';
      const wrapper = mount(LabeledSelect, {
        props: {
          value,
          options: [],
        }
      });

      // Component is from a library and class is not going to be changed
      expect(wrapper.find('.vs__selected').text()).toBe(value);
    });

    it('using custom key as label for option object', () => {
      const value = 'foo';
      const label = 'Foo';
      const customLabelKey = 'bananas';
      const wrapper = mount(LabeledSelect, {
        props: {
          value,
          optionLabel: customLabelKey,
          options:     [{
            [customLabelKey]: label,
            value
          }],
        }
      });

      // Component is from a library and class is not going to be changed
      expect(wrapper.find('.vs__selected').text()).toBe(label);
    });

    it('translating localized cases', () => {
      const value = 'foo';
      const translation = 'bananas';
      const wrapper = mount(LabeledSelect, {
        props: {
          localizedLabel: true,
          value,
          options:        [{ label: 'whatever', value }],
        },
        global: { mocks: { $store: { getters: { 'i18n/t': () => translation } } } }
      });

      // Component is from a library and class is not going to be changed
      expect(wrapper.find('.vs__selected').text()).toBe(translation);
    });

    describe('updating the value on options change', () => {
      it('using new label', async() => {
        const value = 'foo';
        const oldLabel = 'Foo';
        const newLabel = 'Baz';
        const wrapper = mount(LabeledSelect, {
          props: {
            value,
            options: [
              { label: oldLabel, value },
            ],
          }
        });

        await wrapper.setProps({
          options: [
            { label: newLabel, value },
          ]
        });

        // Component is from a library and class is not going to be changed
        expect(wrapper.find('.vs__selected').text()).toBe(newLabel);
      });

      it('using values only and no labels', async() => {
        const value = 'foo';
        const newValue = 'bananas';
        const wrapper = mount(LabeledSelect, {
          props: {
            value,
            options: [value],
          }
        });

        await wrapper.setProps({ options: [newValue] });

        // Component is from a library and class is not going to be changed
        expect(wrapper.find('.vs__selected').text()).toBe(value);
      });

      it('using translated value', async() => {
        const value = 'foo';
        const oldLabel = 'Foo';
        const newLabel = 'Baz';
        const translation = 'bananas';
        const i18nMap: Record<string, string> = { [newLabel]: translation };
        const wrapper = mount(LabeledSelect, {
          props: {
            value,
            localizedLabel: true,
            options:        [
              { label: oldLabel, value },
            ],
          },
          global: { mocks: { $store: { getters: { 'i18n/t': (text: string) => i18nMap[text] } } } }
        });

        await wrapper.setProps({
          options: [
            { label: newLabel, value },
          ]
        });

        // Component is from a library and class is not going to be changed
        expect(wrapper.find('.vs__selected').text()).toBe(translation);
      });
    });
  });

  describe('given attributes from parent element', () => {
    it('should not pass classes to the select element', () => {
      const customClass = 'bananas';
      const ParentComponent = defineComponent({
        components: { LabeledSelect },
        template:   `<LabeledSelect class="${ customClass }" />`,
      });
      const wrapper = mount(ParentComponent);
      const input = wrapper.find('.v-select');

      expect(input.classes).not.toContain(customClass);
    });

    it.each([
      [true, ['bananas']],
      [false, 'bananas'],
    ])('given multiple as %p, should emit %p', async(multiple, expectation) => {
      const ParentComponent = defineComponent({
        components: { LabeledSelect },
        template:   `
          <LabeledSelect
            v-model:value="myValue"
            :multiple="${ multiple }"
            :options="options"
            :appendToBody="false"
          />`,
        data: () => ({
          myValue: [],
          options: ['bananas']
        })
      });
      const wrapper = mount(ParentComponent);

      // https://test-utils.vuejs.org/guide/essentials/event-handling#Asserting-the-arguments-of-the-event
      await wrapper.find('input').trigger('focus');
      await wrapper.find('.vs__dropdown-option').trigger('click');

      expect(wrapper.vm.$data.myValue).toStrictEqual(expectation);
    });
  });
});