import { post } from '@/lib/request'
import { USE_MOCK, delay, paginate, mockId } from '@/mock'
import type { SystemOss, StorageConfig } from '../system'
import type { PageResult } from '@/lib/request'

const BASE_URL = '/file'

const mockFiles: SystemOss[] = [
  { id: '1', name: 'avatar.jpg', key: 'avatars/1.jpg', url: 'https://images.unsplash.com/photo-1535713875002-d1d0cf377fde?w=800&q=80', suffix: 'jpg', createdAt: new Date().toISOString(), updatedAt: new Date().toISOString() },
  { id: '2', name: 'bg.png', key: 'bg/1.png', url: 'https://images.unsplash.com/photo-1451187580459-43490279c0fa?w=800&q=80', suffix: 'png', createdAt: new Date().toISOString(), updatedAt: new Date().toISOString() },
]

export async function getFileList(params: { current: number; pageSize: number; keyword?: string }) {
  if (USE_MOCK) {
    await delay()
    let list = [...mockFiles]
    if (params.keyword) list = list.filter(f => f.name.includes(params.keyword!))
    return paginate(list, params.current, params.pageSize)
  }
  return post<PageResult<SystemOss>>(`${BASE_URL}/list`, params)
}

export async function uploadFile(_file: File) {
  if (USE_MOCK) { 
    await delay(1000)
    const newFile: SystemOss = {
      id: mockId(), name: _file.name, key: `upload/${_file.name}`,
      url: URL.createObjectURL(_file), suffix: _file.name.split('.').pop() || '',
      createdAt: new Date().toISOString(), updatedAt: new Date().toISOString()
    }
    mockFiles.unshift(newFile)
    return { file: newFile }
  }
  const formData = new FormData()
  formData.append('file', _file)
  return post<{ file: SystemOss }>(`${BASE_URL}/upload`, formData)
}

export async function deleteFile(ids: string[]) {
  if (USE_MOCK) { 
    await delay()
    const idSet = new Set(ids)
    for (let i = mockFiles.length - 1; i >= 0; i--) {
      if (idSet.has(mockFiles[i].id)) mockFiles.splice(i, 1)
    }
    return null
  }
  return post<null>(`${BASE_URL}/delete`, { ids })
}

// ==================== Storage Config APIs ====================
const CONFIG_URL = '/file/config'

export async function getStorageConfigList(params: { current: number; pageSize: number; type?: string; name?: string }) {
  if (USE_MOCK) {
    await delay()
    return paginate([], params.current, params.pageSize)
  }
  return post<PageResult<StorageConfig>>(`${CONFIG_URL}/list`, params)
}

export async function createStorageConfig(data: Partial<StorageConfig>) {
  if (USE_MOCK) return delay()
  return post<null>(`${CONFIG_URL}/create`, data)
}

export async function updateStorageConfig(data: Partial<StorageConfig>) {
  if (USE_MOCK) return delay()
  return post<null>(`${CONFIG_URL}/update`, data)
}

export async function deleteStorageConfig(ids: string[]) {
  if (USE_MOCK) return delay()
  return post<null>(`${CONFIG_URL}/delete`, { ids })
}

export async function setDefaultStorageConfig(id: string) {
  if (USE_MOCK) return delay()
  return post<null>(`${CONFIG_URL}/setDefault`, { id })
}