import service, { request } from './request'
import type { PageData } from './types'

/** 参数目录项（含各维度截至查询时点的生效值） */
export interface ParamDimensionValue {
  dimension_value: string
  value_text: string
  effective_date: string | null
}

export interface ParamCatalogItem {
  param_code: string
  param_name: string
  param_group: string
  value_type: string
  unit: string | null
  dimension_type: string
  options: string[]
  default_value: string | null
  value_min: string | null
  value_max: string | null
  description: string | null
  values: ParamDimensionValue[]
}

/**
 * 枚举参数值 → 中文（展示层翻译；库与接口仍存英文码，审计口径不变）。
 *
 * 业界惯例（RuoYi 字典标签同款）：映射单一出处，避免页内复制漂移；
 * 未知码原样回显 —— 后端新增枚举项而前端未跟上时不会显示成空。
 */
export const PARAM_ENUM_LABELS: Record<string, string> = {
  FULL: '当月全额',
  BALANCE: '余额',
  INCLUDE: '含基本工资',
  DEDUCT: '扣除基本工资',
  EXCLUDE: '不计基本工资',
  '0': '关',
  '1': '开',
}

export function paramEnumLabel(code: string): string {
  return PARAM_ENUM_LABELS[code] ?? code
}

/** 参数目录（asOf 缺省为今日） */
export function getCatalog(asOf?: string): Promise<ParamCatalogItem[]> {
  return request({ url: '/v1/system/params', method: 'get', params: asOf ? { as_of: asOf } : {} })
}

/** 变更条目：参数 + 维度 + 新值 */
export interface ParamChangeItem {
  param_code: string
  dimension_value: string
  value: string
}

export interface ParamChangePayload {
  /** 生效方式：1立即生效 2指定日期生效 */
  change_type: number
  effective_date?: string
  remark?: string
  items: ParamChangeItem[]
}

export interface ParamChangeBatch {
  id: number
  version_no: string
  effective_date: string
  change_type: number
  remark: string | null
  operator_name: string
  item_count: number
  create_time: string
}

/** 提交变更批次 */
export function submitChanges(data: ParamChangePayload): Promise<ParamChangeBatch> {
  return request({ url: '/v1/system/params/changes', method: 'post', data })
}

export interface ParamBatchItem {
  param_code: string
  param_name: string
  dimension_value: string
  old_value_text: string | null
  value_text: string
  effective_date: string
}

export interface ParamBatchDetail {
  id: number
  version_no: string
  effective_date: string
  change_type: number
  remark: string | null
  operator_name: string
  item_count: number
  create_time: string
  items: ParamBatchItem[]
}

/** 批次明细（旧值 → 新值） */
export function getBatchDetail(batchId: number): Promise<ParamBatchDetail> {
  return request({ url: `/v1/system/params/changes/${batchId}`, method: 'get' })
}

export interface ParamBatch {
  id: number
  version_no: string
  effective_date: string
  change_type: number
  remark: string | null
  operator_name: string
  item_count: number
  create_time: string
}

/** 变更记录分页 */
export function listBatches(params: {
  pageNum?: number
  pageSize?: number
  start_date?: string
  end_date?: string
}): Promise<PageData<ParamBatch>> {
  return request({ url: '/v1/system/params/changes', method: 'get', params })
}

/** 撤回未生效批次 */
export function withdrawBatch(batchId: number): Promise<null> {
  return request({ url: `/v1/system/params/changes/${batchId}`, method: 'delete' })
}

export interface ParamDiff {
  param_code: string
  param_name: string
  param_group: string
  dimension_value: string
  old_value: string | null
  new_value: string | null
  changed: boolean
}

/** 两日期快照对比 */
export function compareParams(fromDate: string, toDate: string): Promise<ParamDiff[]> {
  return request({
    url: '/v1/system/params/compare',
    method: 'get',
    params: { from_date: fromDate, to_date: toDate },
  })
}

export interface ParamHistory {
  version_no: string
  dimension_value: string
  old_value_text: string | null
  value_text: string
  effective_date: string
  operator_name: string
  create_time: string
}

/** 单参数版本历史 */
export function getParamHistory(
  paramCode: string,
  params: { pageNum?: number; pageSize?: number; dimension_value?: string },
): Promise<PageData<ParamHistory>> {
  return request({ url: `/v1/system/params/${paramCode}/history`, method: 'get', params })
}

/**
 * 导出变更记录（文件流）。
 *
 * 走 axios 实例（带令牌）而非 request 封装：响应是 xlsx 文件流，
 * 不是统一信封，拦截器已对 responseType=blob 直通。
 */
export async function exportChanges(params: {
  start_date?: string
  end_date?: string
}): Promise<Blob> {
  const response = await service.get('/v1/system/params/export', {
    params,
    responseType: 'blob',
  })
  return response.data as Blob
}

/** 计算预览入参（金额为字符串，Decimal 承载） */
export interface ParamPreviewPayload {
  business_role?: string
  customer_type?: string
  product_category?: string
  ship_date: string
  receipt_date: string
  revenue: string
  profit: string
  received_amount: string
  barter: boolean
  probation: boolean
}

export interface ParamUsed {
  param_code: string
  value_text: string
  effective_date: string | null
}

export interface ParamPreviewResult {
  payment_days: number
  rate: string
  rate_text: string
  profit_rate: string
  converted_profit: string
  performance_amount: string
  barter_applied: boolean
  performance_after_barter: string | null
  start_payment_ok: boolean
  payment_weight_r: number
  payment_weight: string
  payable_amount: string
  probation_note: string | null
  params_used: ParamUsed[]
}

/** 计算预览 */
export function previewCalc(data: ParamPreviewPayload): Promise<ParamPreviewResult> {
  return request({ url: '/v1/system/params/preview', method: 'post', data })
}