import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'

const { post } = vi.hoisted(() => ({
  post: vi.fn(),
}))

vi.mock('@/api/client', () => ({
  apiClient: { post },
}))

import { duplicate } from '@/api/admin/channelMonitor'

describe('admin channel monitor duplicate API', () => {
  beforeEach(() => {
    localStorage.clear()
    sessionStorage.clear()
    localStorage.setItem('auth_user', JSON.stringify({ id: 7 }))
    post.mockReset()
    post.mockResolvedValue({ data: { id: 43, name: 'primary (Copy)' } })
    vi.spyOn(globalThis.crypto, 'randomUUID').mockReturnValue('11111111-1111-4111-8111-111111111111')
  })

  afterEach(() => {
    vi.restoreAllMocks()
  })

  it('sends a stable idempotency key with the duplicate request', async () => {
    const monitor = await duplicate(42)

    expect(post).toHaveBeenCalledWith('/admin/channel-monitors/42/duplicate', undefined, {
      headers: {
        'Idempotency-Key': 'channel-monitor-duplicate-7-42-11111111-1111-4111-8111-111111111111',
      },
    })
    expect(monitor).toEqual({ id: 43, name: 'primary (Copy)' })
    expect(sessionStorage.length).toBe(0)
  })

  it('reuses the operation key after an ambiguous failed request', async () => {
    post.mockRejectedValueOnce(new Error('network timeout'))
    await expect(duplicate(99)).rejects.toThrow('network timeout')

    post.mockResolvedValueOnce({ data: { id: 100, name: 'retry (Copy)' } })
    await duplicate(99)

    expect(post).toHaveBeenCalledTimes(2)
    expect(post.mock.calls[1][2].headers).toEqual(post.mock.calls[0][2].headers)
    expect(sessionStorage.length).toBe(0)
  })

  it('reuses the operation key after a page reload', async () => {
    post.mockRejectedValueOnce(new Error('network timeout'))
    await expect(duplicate(77)).rejects.toThrow('network timeout')
    const firstHeaders = post.mock.calls[0][2].headers

    vi.resetModules()
    post.mockResolvedValueOnce({ data: { id: 78, name: 'reload (Copy)' } })
    const { duplicate: duplicateAfterReload } = await import('@/api/admin/channelMonitor')
    await duplicateAfterReload(77)

    expect(post).toHaveBeenCalledTimes(2)
    expect(post.mock.calls[1][2].headers).toEqual(firstHeaders)
    expect(sessionStorage.length).toBe(0)
  })

  it('does not reuse an operation key across administrators for the same monitor', async () => {
    post.mockRejectedValueOnce(new Error('first admin timeout'))
    await expect(duplicate(55)).rejects.toThrow('first admin timeout')
    const firstAdminHeaders = post.mock.calls[0][2].headers

    localStorage.setItem('auth_user', JSON.stringify({ id: 8 }))
    vi.mocked(globalThis.crypto.randomUUID).mockReturnValueOnce(
      '22222222-2222-4222-8222-222222222222'
    )
    post.mockResolvedValueOnce({ data: { id: 56, name: 'second admin copy' } })
    await duplicate(55)

    expect(post.mock.calls[1][2].headers).not.toEqual(firstAdminHeaders)
    expect(post.mock.calls[1][2].headers).toEqual({
      'Idempotency-Key': 'channel-monitor-duplicate-8-55-22222222-2222-4222-8222-222222222222',
    })
    expect(sessionStorage.getItem('sub2api:admin:channel-monitor-duplicate:7:55')).toBe(
      firstAdminHeaders['Idempotency-Key']
    )
    expect(sessionStorage.getItem('sub2api:admin:channel-monitor-duplicate:8:55')).toBeNull()
  })

  it('does not persist or reuse keys when the current user cannot be parsed', async () => {
    localStorage.setItem('auth_user', '{invalid json')
    post.mockRejectedValueOnce(new Error('network timeout'))
    await expect(duplicate(66)).rejects.toThrow('network timeout')
    const firstHeaders = post.mock.calls[0][2].headers

    vi.mocked(globalThis.crypto.randomUUID).mockReturnValueOnce(
      '33333333-3333-4333-8333-333333333333'
    )
    post.mockResolvedValueOnce({ data: { id: 67, name: 'fallback copy' } })
    await duplicate(66)

    expect(post.mock.calls[1][2].headers).not.toEqual(firstHeaders)
    expect(sessionStorage.length).toBe(0)
  })
})