import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'

import EventDiscountsPanel from '@/features/events/detail/EventDiscountsPanel'

const listCodes = vi.fn()
const listRedemptions = vi.fn()
const getReport = vi.fn()
const getBootstrap = vi.fn()
const bulkCreate = vi.fn()
const setActive = vi.fn()
const removeCode = vi.fn()
const addToast = vi.fn()
const showAlert = vi.fn((_message: string, onConfirm?: () => unknown) => {
  void onConfirm?.()
})

vi.mock('@/lib/toast', () => ({ addToast: (...args: unknown[]) => addToast(...args) }))
vi.mock('@/hooks/useAlertModal', () => ({ default: () => ({ showAlert }) }))
vi.mock('@/services/discountCodes', () => ({
  LIST_DISCOUNT_CODES: (...args: unknown[]) => listCodes(...args),
  LIST_DISCOUNT_REDEMPTIONS: (...args: unknown[]) => listRedemptions(...args),
  GET_DISCOUNT_REPORT: (...args: unknown[]) => getReport(...args),
  GET_DISCOUNT_MANAGEMENT_BOOTSTRAP: (...args: unknown[]) => getBootstrap(...args),
  BULK_CREATE_DISCOUNT_CODES: (...args: unknown[]) => bulkCreate(...args),
  SET_DISCOUNT_CODE_ACTIVE: (...args: unknown[]) => setActive(...args),
  DELETE_DISCOUNT_CODE: (...args: unknown[]) => removeCode(...args),
}))
vi.mock('@/components/formElements/Button', () => ({
  default: ({
    children,
    isLoading,
    fullWidth: _fullWidth,
    ...props
  }: React.ButtonHTMLAttributes<HTMLButtonElement> & { isLoading?: boolean; fullWidth?: boolean }) => (
    <button
      {...props}
      disabled={props.disabled || isLoading}
    >
      {children}
    </button>
  ),
}))

const usedCode = {
  id: 'code-used',
  eventId: 'event-1',
  code: 'WELCOME20',
  type: 'percent' as const,
  value: 20,
  bearer: 'organizer' as const,
  maxUses: null,
  maxUsesPerUser: null,
  validFrom: null,
  validUntil: null,
  generationBatchId: 'batch-1',
  isActive: true,
  redeemedCount: 2,
  totalDiscountAmount: 140000,
  createdAt: '2030-01-01T09:00:00.000Z',
}

const freshCode = {
  ...usedCode,
  id: 'code-fresh',
  code: 'SAVE50K',
  type: 'fixed' as const,
  value: 50000,
  redeemedCount: 0,
  totalDiscountAmount: 0,
}

describe('EventDiscountsPanel', () => {
  afterEach(() => {
    cleanup()
    vi.clearAllMocks()
  })

  beforeEach(() => {
    vi.clearAllMocks()
    showAlert.mockImplementation((_message: string, onConfirm?: () => unknown) => {
      void onConfirm?.()
    })
    listCodes.mockResolvedValue({ ok: true, data: { items: [usedCode, freshCode], totalItemsCount: 2, totalPages: 1 } })
    listRedemptions.mockResolvedValue({ ok: true, data: { items: [], totalItemsCount: 0, totalPages: 0 } })
    getReport.mockResolvedValue({
      ok: true,
      data: { totalCodes: 2, totalRedemptions: 2, totalDiscountAmount: 140000, totalPlatformAbsorbed: 0, totalOrganizerAbsorbed: 140000 },
    })
    getBootstrap.mockResolvedValue({
      ok: true,
      data: {
        codes: { items: [usedCode, freshCode], totalItemsCount: 2, totalPages: 1 },
        redemptions: { items: [], totalItemsCount: 0, totalPages: 0 },
        report: {
          totalCodes: 2,
          totalRedemptions: 2,
          totalDiscountAmount: 140000,
          totalPlatformAbsorbed: 0,
          totalOrganizerAbsorbed: 140000,
        },
      },
    })
    bulkCreate.mockResolvedValue({ ok: true, data: { batchId: 'b', count: 2, codes: ['AAAA1111', 'BBBB2222'], items: [] } })
    removeCode.mockResolvedValue({ ok: true, data: undefined })
  })

  it('renders a message and skips loading for free events', () => {
    render(
      <EventDiscountsPanel
        isFree
        eventId="event-1"
      />
    )

    expect(screen.getByText('این ایونت رایگان است')).toBeInTheDocument()
    expect(getBootstrap).not.toHaveBeenCalled()
    expect(listCodes).not.toHaveBeenCalled()
  })

  it('lists codes and disables delete for a used code', async () => {
    render(
      <EventDiscountsPanel
        eventId="event-1"
        isFree={false}
      />
    )

    expect(await screen.findByText('WELCOME20')).toBeInTheDocument()
    expect(screen.getByText('SAVE50K')).toBeInTheDocument()

    const deleteButtons = screen.getAllByRole('button', { name: 'حذف' })

    // First card is the used code — its delete must be disabled.
    expect(deleteButtons[0]).toBeDisabled()
    // Second card is the unused code — deletable.
    expect(deleteButtons[1]).toBeEnabled()
  })

  it('bulk-creates codes and reveals the generated list', async () => {
    render(
      <EventDiscountsPanel
        eventId="event-1"
        isFree={false}
      />
    )

    await screen.findByText('WELCOME20')
    bulkCreate.mockClear()

    fireEvent.change(screen.getByLabelText('درصد تخفیف (۱ تا ۹۹)'), { target: { value: '25' } })
    fireEvent.change(screen.getByLabelText('تعداد کد یکتا'), { target: { value: '2' } })
    fireEvent.click(screen.getByRole('button', { name: 'ساخت کد تخفیف' }))

    await waitFor(() => {
      expect(bulkCreate).toHaveBeenCalledWith('event-1', expect.objectContaining({ type: 'percent', value: 25, quantity: 2 }))
    })
    expect(await screen.findByText('AAAA1111')).toBeInTheDocument()
    expect(screen.getByText('BBBB2222')).toBeInTheDocument()
  })

  it('rejects an out-of-range percent value before calling the API', async () => {
    render(
      <EventDiscountsPanel
        eventId="event-1"
        isFree={false}
      />
    )

    await screen.findByText('WELCOME20')
    bulkCreate.mockClear()
    addToast.mockClear()

    fireEvent.change(screen.getByLabelText('درصد تخفیف (۱ تا ۹۹)'), { target: { value: '150' } })
    fireEvent.click(screen.getByRole('button', { name: 'ساخت کد تخفیف' }))

    await waitFor(() => {
      expect(addToast).toHaveBeenCalledWith(expect.objectContaining({ color: 'warning' }))
    })
    expect(bulkCreate).not.toHaveBeenCalled()
  })
})