/**
 * 订单管理模块属性测试
 * 
 * 使用 fast-check 进行属性测试，验证订单管理模块的正确性属性
 * 
 * Feature: order-management-frontend
 */

import { describe, it, expect } from 'vitest'
import * as fc from 'fast-check'

// ==================== 辅助函数 ====================

/**
 * 构建搜索参数对象，过滤掉空值
 * 用于验证搜索参数正确传递
 */
function buildSearchParams<T extends Record<string, any>>(params: T): Record<string, any> {
  const result: Record<string, any> = {}
  for (const [key, value] of Object.entries(params)) {
    if (value !== undefined && value !== null && value !== '') {
      result[key] = value
    }
  }
  return result
}

/**
 * 验证分页参数是否有效
 */
function isValidPagination(page: number, pageSize: number): boolean {
  return page >= 1 && pageSize > 0 && Number.isInteger(page) && Number.isInteger(pageSize)
}

/**
 * 验证发货信息是否有效
 * 物流公司名称和快递单号不能为空或纯空白字符串
 */
function isValidShipInfo(courierName: string, courierNumber: string): boolean {
  return courierName.trim().length > 0 && courierNumber.trim().length > 0
}

/**
 * 验证API响应格式是否符合规范
 */
function isValidApiResponse(response: any): boolean {
  return (
    typeof response === 'object' &&
    response !== null &&
    typeof response.code === 'number' &&
    typeof response.message === 'string'
  )
}

/**
 * 验证分页结果格式是否符合规范
 */
function isValidPagedResult(result: any): boolean {
  return (
    typeof result === 'object' &&
    result !== null &&
    Array.isArray(result.list) &&
    typeof result.total === 'number' &&
    typeof result.page === 'number' &&
    typeof result.pageSize === 'number' &&
    typeof result.totalPages === 'number'
  )
}

/**
 * 验证订单列表响应项是否包含必需字段
 */
function isValidOrderListResponse(item: any): boolean {
  return (
    typeof item === 'object' &&
    item !== null &&
    typeof item.id === 'number' &&
    typeof item.orderNum === 'string' &&
    typeof item.userId === 'number' &&
    typeof item.status === 'number' &&
    typeof item.statusName === 'string'
  )
}

/**
 * 验证发货订单响应项是否包含必需字段
 */
function isValidShippingOrderResponse(item: any): boolean {
  return (
    typeof item === 'object' &&
    item !== null &&
    typeof item.id === 'number' &&
    typeof item.userId === 'number' &&
    typeof item.sendNum === 'string' &&
    typeof item.status === 'number' &&
    typeof item.statusName === 'string' &&
    Array.isArray(item.prizes)
  )
}

/**
 * 验证回收订单响应项是否包含必需字段
 */
function isValidRecoveryOrderResponse(item: any): boolean {
  return (
    typeof item === 'object' &&
    item !== null &&
    typeof item.id === 'number' &&
    typeof item.userId === 'number' &&
    typeof item.recoveryNum === 'string' &&
    typeof item.money === 'number' &&
    typeof item.count === 'number' &&
    Array.isArray(item.prizes)
  )
}

/**
 * 验证错误响应格式是否符合规范
 */
function isValidErrorResponse(response: any): boolean {
  return (
    typeof response === 'object' &&
    response !== null &&
    typeof response.code === 'number' &&
    response.code !== 0 &&
    typeof response.message === 'string' &&
    response.message.length > 0
  )
}

// ==================== 生成器 ====================

/** 生成可选的用户ID */
const optionalUserIdArb = fc.option(fc.integer({ min: 1, max: 999999 }), { nil: undefined })

/** 生成可选的手机号 */
const optionalMobileArb = fc.option(
  fc.stringOf(fc.constantFrom('0', '1', '2', '3', '4', '5', '6', '7', '8', '9'), { minLength: 11, maxLength: 11 }),
  { nil: undefined }
)

/** 生成可选的订单号 */
const optionalOrderNumArb = fc.option(
  fc.stringMatching(/^[a-zA-Z0-9]{10,32}$/),
  { nil: undefined }
)

/** 生成可选的日期字符串 */
const optionalDateArb = fc.option(
  fc.date({ min: new Date('2020-01-01'), max: new Date('2030-12-31') })
    .map(d => d.toISOString().split('T')[0]),
  { nil: undefined }
)

/** 生成可选的状态 */
const optionalStatusArb = fc.option(fc.integer({ min: 0, max: 4 }), { nil: undefined })

/** 生成有效的页码 */
const validPageArb = fc.integer({ min: 1, max: 1000 })

/** 生成有效的页大小 */
const validPageSizeArb = fc.integer({ min: 1, max: 100 })

/** 生成无效的页码（小于1或非整数） */
const invalidPageArb = fc.oneof(
  fc.integer({ min: -100, max: 0 }),
  fc.double({ min: 0.1, max: 10, noNaN: true }).filter(n => !Number.isInteger(n))
)

/** 生成无效的页大小（小于等于0或非整数） */
const invalidPageSizeArb = fc.oneof(
  fc.integer({ min: -100, max: 0 }),
  fc.double({ min: 0.1, max: 10, noNaN: true }).filter(n => !Number.isInteger(n))
)

/** 生成有效的物流公司名称 */
const validCourierNameArb = fc.stringOf(fc.unicode(), { minLength: 1, maxLength: 50 })
  .filter(s => s.trim().length > 0)

/** 生成有效的快递单号 */
const validCourierNumberArb = fc.stringMatching(/^[a-zA-Z0-9]{10,30}$/)

/** 生成空或纯空白字符串 */
const emptyOrWhitespaceArb = fc.oneof(
  fc.constant(''),
  fc.stringOf(fc.constantFrom(' ', '\t', '\n', '\r'), { minLength: 1, maxLength: 10 })
)

/** 生成订单列表请求参数 */
const orderListRequestArb = fc.record({
  page: validPageArb,
  pageSize: validPageSizeArb,
  userId: optionalUserIdArb,
  mobile: optionalMobileArb,
  orderNum: optionalOrderNumArb,
  startDate: optionalDateArb,
  endDate: optionalDateArb,
  status: optionalStatusArb
})

/** 生成发货订单列表请求参数 */
const shippingOrderListRequestArb = fc.record({
  page: validPageArb,
  pageSize: validPageSizeArb,
  userId: optionalUserIdArb,
  mobile: optionalMobileArb,
  sendNum: optionalOrderNumArb,
  startDate: optionalDateArb,
  endDate: optionalDateArb,
  status: optionalStatusArb
})

/** 生成综合订单列表请求参数 */
const comprehensiveOrderListRequestArb = fc.record({
  page: validPageArb,
  pageSize: validPageSizeArb,
  userId: optionalUserIdArb,
  mobile: optionalMobileArb,
  orderNum: optionalOrderNumArb,
  startDate: optionalDateArb,
  endDate: optionalDateArb,
  status: optionalStatusArb,
  accountType: fc.option(fc.integer({ min: 0, max: 2 }), { nil: undefined }),
  accountStatus: fc.option(fc.integer({ min: 0, max: 1 }), { nil: undefined })
})

// ==================== 属性测试 ====================

describe('订单管理模块属性测试', () => {
  /**
   * Property 1: 搜索参数正确传递
   * 
   * *For any* 搜索条件对象，当用户提交搜索时，API调用应该正确传递所有非空的搜索参数到后端。
   * 
   * **Validates: Requirements 1.2, 3.2, 4.2, 6.2, 7.2**
   * 
   * Feature: order-management-frontend, Property 1: 搜索参数正确传递
   */
  describe('Property 1: 搜索参数正确传递', () => {
    it('对于任意订单列表搜索参数，buildSearchParams应该正确过滤空值', () => {
      fc.assert(
        fc.property(orderListRequestArb, (params) => {
          const builtParams = buildSearchParams(params)
          
          // 验证：所有非空参数都应该被保留
          for (const [key, value] of Object.entries(params)) {
            if (value !== undefined && value !== null && value !== '') {
              expect(builtParams[key]).toBe(value)
            } else {
              expect(builtParams[key]).toBeUndefined()
            }
          }
          
          // 验证：构建的参数中不应该有空值
          for (const value of Object.values(builtParams)) {
            expect(value).not.toBeUndefined()
            expect(value).not.toBeNull()
            expect(value).not.toBe('')
          }
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意发货订单搜索参数，buildSearchParams应该正确过滤空值', () => {
      fc.assert(
        fc.property(shippingOrderListRequestArb, (params) => {
          const builtParams = buildSearchParams(params)
          
          // 验证：所有非空参数都应该被保留
          for (const [key, value] of Object.entries(params)) {
            if (value !== undefined && value !== null && value !== '') {
              expect(builtParams[key]).toBe(value)
            } else {
              expect(builtParams[key]).toBeUndefined()
            }
          }
          
          // 验证：构建的参数中不应该有空值
          for (const value of Object.values(builtParams)) {
            expect(value).not.toBeUndefined()
            expect(value).not.toBeNull()
            expect(value).not.toBe('')
          }
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意综合订单搜索参数，buildSearchParams应该正确过滤空值', () => {
      fc.assert(
        fc.property(comprehensiveOrderListRequestArb, (params) => {
          const builtParams = buildSearchParams(params)
          
          // 验证：所有非空参数都应该被保留
          for (const [key, value] of Object.entries(params)) {
            if (value !== undefined && value !== null && value !== '') {
              expect(builtParams[key]).toBe(value)
            } else {
              expect(builtParams[key]).toBeUndefined()
            }
          }
          
          // 验证：构建的参数中不应该有空值
          for (const value of Object.values(builtParams)) {
            expect(value).not.toBeUndefined()
            expect(value).not.toBeNull()
            expect(value).not.toBe('')
          }
        }),
        { numRuns: 100 }
      )
    })
  })


  /**
   * Property 2: 分页参数正确传递
   * 
   * *For any* 页码和页大小组合，当用户切换分页时，API调用应该正确传递page和pageSize参数，
   * 且page >= 1，pageSize > 0。
   * 
   * **Validates: Requirements 1.3**
   * 
   * Feature: order-management-frontend, Property 2: 分页参数正确传递
   */
  describe('Property 2: 分页参数正确传递', () => {
    it('对于任意有效的分页参数，isValidPagination应该返回true', () => {
      fc.assert(
        fc.property(validPageArb, validPageSizeArb, (page, pageSize) => {
          expect(isValidPagination(page, pageSize)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意无效的页码，isValidPagination应该返回false', () => {
      fc.assert(
        fc.property(invalidPageArb, validPageSizeArb, (page, pageSize) => {
          expect(isValidPagination(page, pageSize)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意无效的页大小，isValidPagination应该返回false', () => {
      fc.assert(
        fc.property(validPageArb, invalidPageSizeArb, (page, pageSize) => {
          expect(isValidPagination(page, pageSize)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('分页参数应该满足page >= 1且pageSize > 0的约束', () => {
      fc.assert(
        fc.property(
          fc.integer({ min: -100, max: 1000 }),
          fc.integer({ min: -100, max: 100 }),
          (page, pageSize) => {
            const isValid = isValidPagination(page, pageSize)
            const shouldBeValid = page >= 1 && pageSize > 0 && Number.isInteger(page) && Number.isInteger(pageSize)
            expect(isValid).toBe(shouldBeValid)
          }
        ),
        { numRuns: 100 }
      )
    })
  })

  /**
   * Property 3: 发货信息验证
   * 
   * *For any* 发货表单输入，当物流公司名称或快递单号为空字符串或纯空白字符串时，
   * 表单验证应该失败并阻止提交。
   * 
   * **Validates: Requirements 5.4**
   * 
   * Feature: order-management-frontend, Property 3: 发货信息验证
   */
  describe('Property 3: 发货信息验证', () => {
    it('对于任意有效的发货信息，isValidShipInfo应该返回true', () => {
      fc.assert(
        fc.property(validCourierNameArb, validCourierNumberArb, (courierName, courierNumber) => {
          expect(isValidShipInfo(courierName, courierNumber)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('当物流公司名称为空或纯空白时，isValidShipInfo应该返回false', () => {
      fc.assert(
        fc.property(emptyOrWhitespaceArb, validCourierNumberArb, (courierName, courierNumber) => {
          expect(isValidShipInfo(courierName, courierNumber)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('当快递单号为空或纯空白时，isValidShipInfo应该返回false', () => {
      fc.assert(
        fc.property(validCourierNameArb, emptyOrWhitespaceArb, (courierName, courierNumber) => {
          expect(isValidShipInfo(courierName, courierNumber)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('当物流公司名称和快递单号都为空或纯空白时，isValidShipInfo应该返回false', () => {
      fc.assert(
        fc.property(emptyOrWhitespaceArb, emptyOrWhitespaceArb, (courierName, courierNumber) => {
          expect(isValidShipInfo(courierName, courierNumber)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('发货信息验证应该正确处理trim后的字符串', () => {
      fc.assert(
        fc.property(
          fc.string(),
          fc.string(),
          (courierName, courierNumber) => {
            const isValid = isValidShipInfo(courierName, courierNumber)
            const shouldBeValid = courierName.trim().length > 0 && courierNumber.trim().length > 0
            expect(isValid).toBe(shouldBeValid)
          }
        ),
        { numRuns: 100 }
      )
    })
  })

  /**
   * Property 4: API响应格式一致性
   * 
   * *For any* API调用，响应数据应该符合定义的TypeScript接口类型，包含所有必需字段。
   * 
   * **Validates: Requirements 8.2, 8.3, 8.4, 8.5, 8.6**
   * 
   * Feature: order-management-frontend, Property 4: API响应格式一致性
   */
  describe('Property 4: API响应格式一致性', () => {
    /** 生成有效的API响应 */
    const validApiResponseArb = fc.record({
      code: fc.constant(0),
      message: fc.string(),
      data: fc.anything()
    })

    /** 生成有效的分页结果 */
    const validPagedResultArb = fc.record({
      list: fc.array(fc.anything()),
      total: fc.nat(),
      page: fc.integer({ min: 1 }),
      pageSize: fc.integer({ min: 1 }),
      totalPages: fc.nat()
    })

    /** 生成有效的订单列表响应项 */
    const validOrderListResponseArb = fc.record({
      id: fc.integer({ min: 1 }),
      orderNum: fc.string({ minLength: 1 }),
      userId: fc.integer({ min: 1 }),
      userNickname: fc.option(fc.string(), { nil: undefined }),
      userMobile: fc.option(fc.string(), { nil: undefined }),
      userUid: fc.option(fc.string(), { nil: undefined }),
      goodsId: fc.integer({ min: 1 }),
      goodsTitle: fc.option(fc.string(), { nil: undefined }),
      goodsImgUrl: fc.option(fc.string(), { nil: undefined }),
      orderType: fc.integer({ min: 0, max: 10 }),
      orderTotal: fc.float({ min: 0 }),
      discount: fc.float({ min: 0 }),
      discountTotal: fc.float({ min: 0 }),
      weChatPayment: fc.float({ min: 0 }),
      balancePayment: fc.float({ min: 0 }),
      integralPayment: fc.float({ min: 0 }),
      scorePayment: fc.float({ min: 0 }),
      couponPayment: fc.option(fc.float({ min: 0 }), { nil: undefined }),
      num: fc.integer({ min: 1 }),
      prizeNum: fc.integer({ min: 0 }),
      status: fc.integer({ min: 0, max: 2 }),
      statusName: fc.string({ minLength: 1 }),
      payType: fc.integer({ min: 0, max: 2 }),
      payTypeName: fc.string({ minLength: 1 }),
      createdAt: fc.string({ minLength: 1 }),
      payTime: fc.option(fc.string(), { nil: undefined })
    })

    /** 生成有效的发货订单响应项 */
    const validShippingOrderResponseArb = fc.record({
      id: fc.integer({ min: 1 }),
      userId: fc.integer({ min: 1 }),
      userNickname: fc.option(fc.string(), { nil: undefined }),
      userMobile: fc.option(fc.string(), { nil: undefined }),
      userUid: fc.option(fc.string(), { nil: undefined }),
      sendNum: fc.string({ minLength: 1 }),
      freight: fc.float({ min: 0 }),
      status: fc.integer({ min: 0, max: 4 }),
      statusName: fc.string({ minLength: 1 }),
      count: fc.integer({ min: 1 }),
      name: fc.option(fc.string(), { nil: undefined }),
      receiverMobile: fc.option(fc.string(), { nil: undefined }),
      address: fc.option(fc.string(), { nil: undefined }),
      message: fc.option(fc.string(), { nil: undefined }),
      courierNumber: fc.option(fc.string(), { nil: undefined }),
      courierName: fc.option(fc.string(), { nil: undefined }),
      courierCode: fc.option(fc.string(), { nil: undefined }),
      deliveryStatus: fc.integer({ min: 0, max: 3 }),
      deliveryStatusName: fc.string({ minLength: 1 }),
      createdAt: fc.string({ minLength: 1 }),
      payTime: fc.option(fc.string(), { nil: undefined }),
      sendTime: fc.option(fc.string(), { nil: undefined }),
      receiveTime: fc.option(fc.string(), { nil: undefined }),
      prizes: fc.array(fc.record({
        id: fc.integer({ min: 1 }),
        prizeCode: fc.option(fc.string(), { nil: undefined }),
        title: fc.option(fc.string(), { nil: undefined }),
        imgUrl: fc.option(fc.string(), { nil: undefined }),
        price: fc.float({ min: 0 }),
        goodsType: fc.integer({ min: 0 })
      }))
    })

    /** 生成有效的回收订单响应项 */
    const validRecoveryOrderResponseArb = fc.record({
      id: fc.integer({ min: 1 }),
      userId: fc.integer({ min: 1 }),
      userNickname: fc.option(fc.string(), { nil: undefined }),
      userMobile: fc.option(fc.string(), { nil: undefined }),
      userUid: fc.option(fc.string(), { nil: undefined }),
      recoveryNum: fc.string({ minLength: 1 }),
      money: fc.float({ min: 0 }),
      count: fc.integer({ min: 1 }),
      createdAt: fc.string({ minLength: 1 }),
      prizes: fc.array(fc.record({
        id: fc.integer({ min: 1 }),
        prizeCode: fc.option(fc.string(), { nil: undefined }),
        title: fc.option(fc.string(), { nil: undefined }),
        imgUrl: fc.option(fc.string(), { nil: undefined }),
        price: fc.float({ min: 0 }),
        recoveryMoney: fc.float({ min: 0 }),
        goodsType: fc.integer({ min: 0 })
      }))
    })

    it('对于任意有效的API响应，isValidApiResponse应该返回true', () => {
      fc.assert(
        fc.property(validApiResponseArb, (response) => {
          expect(isValidApiResponse(response)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意有效的分页结果，isValidPagedResult应该返回true', () => {
      fc.assert(
        fc.property(validPagedResultArb, (result) => {
          expect(isValidPagedResult(result)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意有效的订单列表响应项，isValidOrderListResponse应该返回true', () => {
      fc.assert(
        fc.property(validOrderListResponseArb, (item) => {
          expect(isValidOrderListResponse(item)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意有效的发货订单响应项，isValidShippingOrderResponse应该返回true', () => {
      fc.assert(
        fc.property(validShippingOrderResponseArb, (item) => {
          expect(isValidShippingOrderResponse(item)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意有效的回收订单响应项，isValidRecoveryOrderResponse应该返回true', () => {
      fc.assert(
        fc.property(validRecoveryOrderResponseArb, (item) => {
          expect(isValidRecoveryOrderResponse(item)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('缺少必需字段的响应应该验证失败', () => {
      // 测试缺少code字段
      expect(isValidApiResponse({ message: 'test', data: null })).toBe(false)
      // 测试缺少message字段
      expect(isValidApiResponse({ code: 0, data: null })).toBe(false)
      // 测试null响应
      expect(isValidApiResponse(null)).toBe(false)
      // 测试undefined响应
      expect(isValidApiResponse(undefined)).toBe(false)
    })
  })

  /**
   * Property 5: 错误响应格式一致性
   * 
   * *For any* API调用失败，错误响应应该包含统一格式的错误信息（code和message字段）。
   * 
   * **Validates: Requirements 8.7**
   * 
   * Feature: order-management-frontend, Property 5: 错误响应格式一致性
   */
  describe('Property 5: 错误响应格式一致性', () => {
    /** 生成有效的错误响应 */
    const validErrorResponseArb = fc.record({
      code: fc.integer({ min: 1, max: 9999 }), // 非0的错误码
      message: fc.string({ minLength: 1 })
    })

    /** 生成无效的错误响应（缺少字段或格式错误） */
    const invalidErrorResponseArb = fc.oneof(
      fc.constant(null),
      fc.constant(undefined),
      fc.constant({}),
      fc.record({ code: fc.constant(0), message: fc.string() }), // code为0不是错误
      fc.record({ code: fc.integer(), message: fc.constant('') }), // 空message
      fc.record({ code: fc.string() as any, message: fc.string() }), // code类型错误
      fc.record({ code: fc.integer(), message: fc.integer() as any }) // message类型错误
    )

    it('对于任意有效的错误响应，isValidErrorResponse应该返回true', () => {
      fc.assert(
        fc.property(validErrorResponseArb, (response) => {
          expect(isValidErrorResponse(response)).toBe(true)
        }),
        { numRuns: 100 }
      )
    })

    it('对于任意无效的错误响应，isValidErrorResponse应该返回false', () => {
      fc.assert(
        fc.property(invalidErrorResponseArb, (response) => {
          expect(isValidErrorResponse(response)).toBe(false)
        }),
        { numRuns: 100 }
      )
    })

    it('错误响应必须包含非零的code和非空的message', () => {
      fc.assert(
        fc.property(
          fc.integer(),
          fc.string(),
          (code, message) => {
            const response = { code, message }
            const isValid = isValidErrorResponse(response)
            const shouldBeValid = code !== 0 && message.length > 0
            expect(isValid).toBe(shouldBeValid)
          }
        ),
        { numRuns: 100 }
      )
    })
  })
})
