import { render, screen, fireEvent } from '@testing-library/vue'
import '@testing-library/jest-dom'
import badges from './badges.vue'

const localVue = global.localVue

describe('badge settings', () => {
  let mocks

  const apolloMutateMock = jest.fn()

  const Wrapper = () => {
    return render(badges, {
      localVue,
      mocks,
    })
  }

  beforeEach(() => {
    apolloMutateMock.mockReset()
    mocks = {
      $t: jest.fn((t) => t),
      $toast: {
        success: jest.fn(),
        error: jest.fn(),
        info: jest.fn(),
      },
      $apollo: {
        mutate: apolloMutateMock,
      },
    }
  })

  describe('without badges', () => {
    beforeEach(() => {
      mocks.$store = {
        getters: {
          'auth/isModerator': () => false,
          'auth/user': {
            id: 'u23',
            badgeVerification: {
              id: 'bv1',
              icon: '/verification/icon',
              description: 'Verification description',
              isDefault: true,
            },
            badgeTrophiesSelected: [],
            badgeTrophiesUnused: [],
          },
        },
      }
    })

    it('renders', () => {
      const wrapper = Wrapper()
      expect(wrapper.container).toMatchSnapshot()
    })
  })

  describe('with badges', () => {
    const badgeTrophiesSelected = [
      {
        id: '1',
        icon: '/path/to/some/icon',
        isDefault: false,
        description: 'Some description',
      },
      {
        id: '2',
        icon: '/path/to/empty/icon',
        isDefault: true,
        description: 'Empty',
      },
      {
        id: '3',
        icon: '/path/to/third/icon',
        isDefault: false,
        description: 'Third description',
      },
    ]

    const badgeTrophiesUnused = [
      {
        id: '4',
        icon: '/path/to/fourth/icon',
        description: 'Fourth description',
      },
      {
        id: '5',
        icon: '/path/to/fifth/icon',
        description: 'Fifth description',
      },
    ]

    let wrapper

    beforeEach(() => {
      mocks.$store = {
        commit: jest.fn(),
        getters: {
          'auth/isModerator': () => false,
          'auth/user': {
            id: 'u23',
            badgeVerification: {
              id: 'bv1',
              icon: '/verification/icon',
              description: 'Verification description',
              isDefault: false,
            },
            badgeTrophiesSelected,
            badgeTrophiesUnused,
          },
        },
      }
      wrapper = Wrapper()
    })

    it('renders', () => {
      expect(wrapper.container).toMatchSnapshot()
    })

    describe('selecting a used badge', () => {
      beforeEach(async () => {
        const badge = screen.getByTitle(badgeTrophiesSelected[0].description)
        await fireEvent.click(badge)
      })

      it('shows remove badge button', () => {
        expect(screen.getByText('settings.badges.remove')).toBeInTheDocument()
      })

      describe('clicking remove badge button', () => {
        const clickButton = async () => {
          const removeButton = screen.getByText('settings.badges.remove')
          await fireEvent.click(removeButton)
        }

        describe('with successful server request', () => {
          const removedResponseData = {
            setTrophyBadgeSelected: {
              id: 'u23',
              badgeTrophiesSelected: [
                {
                  id: 'empty-0',
                  icon: '/path/to/empty/icon',
                  isDefault: true,
                  description: 'Empty',
                },
                {
                  id: '2',
                  icon: '/path/to/empty/icon',
                  isDefault: true,
                  description: 'Empty',
                },
                {
                  id: '3',
                  icon: '/path/to/third/icon',
                  isDefault: false,
                  description: 'Third description',
                },
              ],
              badgeTrophiesUnused: [
                {
                  id: '1',
                  icon: '/path/to/some/icon',
                  description: 'Some description',
                },
                {
                  id: '4',
                  icon: '/path/to/fourth/icon',
                  description: 'Fourth description',
                },
                {
                  id: '5',
                  icon: '/path/to/fifth/icon',
                  description: 'Fifth description',
                },
              ],
            },
          }

          beforeEach(async () => {
            apolloMutateMock.mockImplementation(({ update }) => {
              const result = { data: removedResponseData }
              if (update) update(null, result)
              return Promise.resolve(result)
            })
            await clickButton()
          })

          it('calls the server', () => {
            expect(apolloMutateMock).toHaveBeenCalledWith({
              mutation: expect.anything(),
              update: expect.anything(),
              variables: {
                badgeId: null,
                slot: 0,
              },
            })
          })

          it('updates badges in store via update callback', () => {
            expect(mocks.$store.commit).toHaveBeenCalledWith(
              'auth/SET_USER',
              expect.objectContaining({
                id: 'u23',
                badgeTrophiesSelected:
                  removedResponseData.setTrophyBadgeSelected.badgeTrophiesSelected,
                badgeTrophiesUnused: removedResponseData.setTrophyBadgeSelected.badgeTrophiesUnused,
              }),
            )
          })

          it('shows a success message', () => {
            expect(mocks.$toast.success).toHaveBeenCalledWith('settings.badges.success-update')
          })
        })

        describe('with failed server request', () => {
          beforeEach(async () => {
            apolloMutateMock.mockRejectedValue({ message: 'Ouch!' })
            await clickButton()
          })

          it('shows an error message', () => {
            expect(mocks.$toast.error).toHaveBeenCalledWith('settings.badges.error-update')
          })
        })
      })
    })

    describe('no more badges available', () => {
      beforeEach(async () => {
        mocks.$store.getters['auth/user'].badgeTrophiesUnused = []
      })

      describe('selecting an empty slot', () => {
        beforeEach(async () => {
          const emptySlot = screen.getAllByTitle('Empty')[0]
          await fireEvent.click(emptySlot)
        })

        it('shows no more badges available message', () => {
          expect(wrapper.container).toMatchSnapshot()
        })
      })
    })

    describe('more badges available', () => {
      describe('selecting an empty slot', () => {
        beforeEach(async () => {
          const emptySlot = screen.getAllByTitle('Empty')[0]
          await fireEvent.click(emptySlot)
        })

        it('shows list with available badges', () => {
          expect(wrapper.container).toMatchSnapshot()
        })

        describe('clicking on an available badge', () => {
          const clickBadge = async () => {
            const badge = screen.getByText(badgeTrophiesUnused[0].description)
            await fireEvent.click(badge)
          }

          describe('with successful server request', () => {
            const addedResponseData = {
              setTrophyBadgeSelected: {
                id: 'u23',
                badgeTrophiesSelected: [
                  {
                    id: '1',
                    icon: '/path/to/some/icon',
                    isDefault: false,
                    description: 'Some description',
                  },
                  {
                    id: '4',
                    icon: '/path/to/fourth/icon',
                    isDefault: false,
                    description: 'Fourth description',
                  },
                  {
                    id: '3',
                    icon: '/path/to/third/icon',
                    isDefault: false,
                    description: 'Third description',
                  },
                ],
              },
            }

            beforeEach(async () => {
              apolloMutateMock.mockImplementation(({ update }) => {
                const result = { data: addedResponseData }
                if (update) update(null, result)
                return Promise.resolve(result)
              })
              await clickBadge()
            })

            it('calls the server', () => {
              expect(apolloMutateMock).toHaveBeenCalledWith({
                mutation: expect.anything(),
                update: expect.anything(),
                variables: {
                  badgeId: '4',
                  slot: 1,
                },
              })
            })

            it('updates badges in store via update callback', () => {
              expect(mocks.$store.commit).toHaveBeenCalledWith(
                'auth/SET_USER',
                expect.objectContaining({
                  id: 'u23',
                  badgeTrophiesSelected:
                    addedResponseData.setTrophyBadgeSelected.badgeTrophiesSelected,
                }),
              )
            })

            it('shows a success message', () => {
              expect(mocks.$toast.success).toHaveBeenCalledWith('settings.badges.success-update')
            })
          })

          describe('with failed server request', () => {
            beforeEach(async () => {
              apolloMutateMock.mockRejectedValue({ message: 'Ouch!' })
              await clickBadge()
            })

            it('shows an error message', () => {
              expect(mocks.$toast.error).toHaveBeenCalledWith('settings.badges.error-update')
            })
          })
        })
      })
    })

    describe('drag and drop', () => {
      const makeDropData = (source) => JSON.stringify(source)

      describe('assign badge from reserve to empty slot via DnD', () => {
        const assignResponseData = {
          setTrophyBadgeSelected: {
            id: 'u23',
            badgeTrophiesSelected: [
              badgeTrophiesSelected[0],
              {
                id: '4',
                icon: '/path/to/fourth/icon',
                isDefault: false,
                description: 'Fourth description',
              },
              badgeTrophiesSelected[2],
            ],
            badgeTrophiesUnused: [badgeTrophiesUnused[1]],
          },
        }

        beforeEach(async () => {
          apolloMutateMock.mockImplementation(({ update }) => {
            const result = { data: assignResponseData }
            if (update) update(null, result)
            return Promise.resolve(result)
          })

          // Simulate dropping a reserve badge on the empty hex slot (index 2 in Badges = slot 1)
          const emptySlot = screen.getAllByTitle('Empty')[0]
          const container = emptySlot.closest('.hc-badge-container')
          const sourceData = makeDropData({
            source: 'reserve',
            badge: badgeTrophiesUnused[0],
          })
          await fireEvent.drop(container, {
            dataTransfer: { getData: () => sourceData },
          })
        })

        it('calls the server with correct badge and slot', () => {
          expect(apolloMutateMock).toHaveBeenCalledWith(
            expect.objectContaining({
              variables: {
                badgeId: '4',
                slot: 1,
              },
            }),
          )
        })

        it('shows success message', () => {
          expect(mocks.$toast.success).toHaveBeenCalledWith('settings.badges.success-update')
        })
      })

      describe('remove badge from hex to reserve via DnD', () => {
        const removeResponseData = {
          setTrophyBadgeSelected: {
            id: 'u23',
            badgeTrophiesSelected: [
              {
                id: 'empty-0',
                icon: '/path/to/empty/icon',
                isDefault: true,
                description: 'Empty',
              },
              badgeTrophiesSelected[1],
              badgeTrophiesSelected[2],
            ],
            badgeTrophiesUnused: [badgeTrophiesSelected[0], ...badgeTrophiesUnused],
          },
        }

        beforeEach(async () => {
          apolloMutateMock.mockImplementation(({ update }) => {
            const result = { data: removeResponseData }
            if (update) update(null, result)
            return Promise.resolve(result)
          })

          // Simulate dropping a hex badge on the reserve container
          const reserveContainer = wrapper.container.querySelector('.badge-selection')
          const hexData = makeDropData({
            source: 'hex',
            index: 1,
            badge: badgeTrophiesSelected[0],
          })
          await fireEvent.drop(reserveContainer, {
            dataTransfer: { getData: () => hexData },
          })
        })

        it('calls the server to remove badge', () => {
          expect(apolloMutateMock).toHaveBeenCalledWith(
            expect.objectContaining({
              variables: {
                badgeId: null,
                slot: 0,
              },
            }),
          )
        })

        it('shows success message', () => {
          expect(mocks.$toast.success).toHaveBeenCalledWith('settings.badges.success-update')
        })
      })

      describe('swap two badges via DnD', () => {
        const swapResponse1 = {
          setTrophyBadgeSelected: {
            id: 'u23',
            badgeTrophiesSelected: [
              {
                id: '3',
                icon: '/path/to/third/icon',
                isDefault: false,
                description: 'Third description',
              },
              badgeTrophiesSelected[1],
              {
                id: 'empty-temp',
                icon: '/path/to/empty/icon',
                isDefault: true,
                description: 'Empty',
              },
            ],
            badgeTrophiesUnused: [badgeTrophiesSelected[0], ...badgeTrophiesUnused],
          },
        }

        const swapResponse2 = {
          setTrophyBadgeSelected: {
            id: 'u23',
            badgeTrophiesSelected: [
              {
                id: '3',
                icon: '/path/to/third/icon',
                isDefault: false,
                description: 'Third description',
              },
              badgeTrophiesSelected[1],
              {
                id: '1',
                icon: '/path/to/some/icon',
                isDefault: false,
                description: 'Some description',
              },
            ],
            badgeTrophiesUnused,
          },
        }

        beforeEach(async () => {
          let callCount = 0
          apolloMutateMock.mockImplementation(({ update }) => {
            callCount++
            const responseData = callCount === 1 ? swapResponse1 : swapResponse2
            const result = { data: responseData }
            if (update) update(null, result)
            return Promise.resolve(result)
          })

          // Simulate dragging badge at index 1 onto badge at index 3 (both occupied)
          const targetBadge = screen.getByTitle(badgeTrophiesSelected[2].description)
          const container = targetBadge.closest('.hc-badge-container')
          const sourceData = makeDropData({
            source: 'hex',
            index: 1,
            badge: badgeTrophiesSelected[0],
          })
          await fireEvent.drop(container, {
            dataTransfer: { getData: () => sourceData },
          })
        })

        it('calls the server twice for swap', () => {
          expect(apolloMutateMock).toHaveBeenCalledTimes(2)
        })

        it('first mutation moves source to target slot', () => {
          expect(apolloMutateMock).toHaveBeenNthCalledWith(
            1,
            expect.objectContaining({
              variables: {
                badgeId: '1',
                slot: 2,
              },
            }),
          )
        })

        it('second mutation moves former target to source slot', () => {
          expect(apolloMutateMock).toHaveBeenNthCalledWith(
            2,
            expect.objectContaining({
              variables: {
                badgeId: '3',
                slot: 0,
              },
            }),
          )
        })

        it('shows success message', () => {
          expect(mocks.$toast.success).toHaveBeenCalledWith('settings.badges.success-update')
        })
      })

      describe('swap with partial failure', () => {
        beforeEach(async () => {
          let callCount = 0
          apolloMutateMock.mockImplementation(({ update }) => {
            callCount++
            if (callCount === 1) {
              const result = {
                data: {
                  setTrophyBadgeSelected: {
                    id: 'u23',
                    badgeTrophiesSelected: badgeTrophiesSelected,
                    badgeTrophiesUnused: badgeTrophiesUnused,
                  },
                },
              }
              if (update) update(null, result)
              return Promise.resolve(result)
            }
            return Promise.reject(new Error('Server error'))
          })

          const targetBadge = screen.getByTitle(badgeTrophiesSelected[2].description)
          const container = targetBadge.closest('.hc-badge-container')
          const sourceData = makeDropData({
            source: 'hex',
            index: 1,
            badge: badgeTrophiesSelected[0],
          })
          await fireEvent.drop(container, {
            dataTransfer: { getData: () => sourceData },
          })
        })

        it('shows swap partial error', () => {
          expect(mocks.$toast.error).toHaveBeenCalledWith('settings.badges.swap-partial-error')
        })
      })
    })
  })
})