import type { FileInfo, PageResult } from '@/types/api'
import type { Contract, ContractQuery } from '@/types/business/contract'

// TODO(api): 待接口文档到位后，将以下 mock 替换为 request<T> 调用

/** 构造 mock 文件信息 */
function mockFile(name: string, size: number, uploadTime: string): FileInfo {
  return { name, size, uploadTime, url: '' }
}

/** 详情 mock 所属合同 id */
const DETAIL_ID = 'contract-001'

/** 合同列表 mock（3 条，覆盖全部签署状态） */
const MOCK_CONTRACTS: Contract[] = [
  {
    id: 'contract-001',
    contractNo: 'C8K2M202408001',
    contractName: '智慧城市建设项目技术服务合同',
    contractType: '互联网软件通用/app开发',
    contractAmount: 201000,
    relatedProjectName: '智慧城市大数据平台建设项目',
    projectNo: 'P8K2M202408001',
    signStatus: '履行中',
    signDate: '2026-8-17 14:00',
    effectiveDate: '2026-8-17 14:00',
    expiryDate: '2026-8-17 14:00',
    files: [mockFile('项目需求规格说明书.pdf', 2516582, '2026-8-17 14:00')],
  },
  {
    id: 'contract-002',
    contractNo: 'C8K2M202408002',
    contractName: '智慧城市建设项目硬件电路设计合同',
    contractType: '硬件电路通用/电路版设计',
    contractAmount: 180000,
    relatedProjectName: '三甲医院指挥医疗信息化系统',
    projectNo: 'P8K2M202408001',
    signStatus: '已过期',
    signDate: '2026-8-17 14:00',
    effectiveDate: '2026-8-17 14:00',
    expiryDate: '2026-8-17 14:00',
    files: [mockFile('硬件电路设计合同.pdf', 1468006, '2026-8-17 14:00')],
  },
  {
    id: 'contract-003',
    contractNo: 'C8K2M202408003',
    contractName: '智慧城市建设项目物联网全案合同',
    contractType: '物联网全案通用/一套门禁卡',
    contractAmount: 96000,
    relatedProjectName: '社区康养智能服务系统',
    projectNo: 'P8K2M202408001',
    signStatus: '待签署',
    effectiveDate: '2026-8-17 14:00',
    expiryDate: '2026-8-17 14:00',
    files: [mockFile('物联网全案合同.pdf', 1258291, '2026-8-17 14:00')],
  },
]

/** 合同详情 mock */
const CONTRACT_DETAIL: Contract = {
  id: DETAIL_ID,
  contractNo: 'C8K2M202408001',
  contractName: '社区康养智能服务系统开发合同',
  contractType: '互联网软件开发',
  contractAmount: 201000,
  relatedProjectName: '社区康养智能服务系统',
  projectNo: '20260813ZZ251245',
  signStatus: '履行中',
  signDate: '2024-10-15',
  effectiveDate: '2024-10-15',
  expiryDate: '2024-10-15',
  files: [mockFile('项目需求规格说明书.pdf', 2516582, '2024-10-15')],
}

/** 合同列表（keyword 筛选 + 分页） */
export function getContractList(query: ContractQuery): Promise<PageResult<Contract>> {
  const filtered = MOCK_CONTRACTS.filter((item) => {
    if (
      query.keyword
      && !item.contractName.includes(query.keyword)
      && !item.contractNo.includes(query.keyword)
    ) {
      return false
    }
    return true
  })
  const pageSize = query.pageSize > 0 ? query.pageSize : 8
  const start = (query.page - 1) * pageSize
  return Promise.resolve({
    list: filtered.slice(start, start + pageSize),
    total: filtered.length,
  })
}

/** 合同详情（不存在返回 null） */
export function getContractDetail(id: string): Promise<Contract | null> {
  if (id === DETAIL_ID) return Promise.resolve({ ...CONTRACT_DETAIL, files: [...CONTRACT_DETAIL.files] })
  const found = MOCK_CONTRACTS.find((item) => item.id === id) ?? null
  return Promise.resolve(found ? { ...found, files: [...found.files] } : null)
}

/** 获取签署二维码（返回有效期） */
export function getSignQr(_id: string): Promise<{ expiresInSeconds: number }> {
  return Promise.resolve({ expiresInSeconds: 272 })
}

/** 刷新签署二维码（返回有效期） */
export function refreshSignQr(_id: string): Promise<{ expiresInSeconds: number }> {
  return Promise.resolve({ expiresInSeconds: 272 })
}