import request from './request'

export interface PurchaseNeedRow {
  purchaseId: number
  salesOrderCode: string
  planCode: string
  purchaseCode: string
  itemCode: string
  itemName: string
  demandQty: number
  availableQty: number
  purchaseQty: number
  orderedQty: number
  unorderedQty: number    // = purchaseQty - orderedQty (backend returns in totalQuantity)
  purchaseDate: string
  remark?: string
}

export interface PurchaseNeedQuery {
  salesOrderCode?: string
  itemCode?: string
  itemName?: string
  businessType?: string
  beginDate?: string
  endDate?: string
  pageNum?: number
  pageSize?: number
}

export interface PurchaseNeedListResponse {
  rows: PurchaseNeedRow[]
  total: number
}

export interface PurchaseNeedSummary {
  totalPurchaseQty: number
  totalOrderedQty: number
  totalUnorderedQty: number
}

// 查询采购计划需求列表
export function getPurchaseNeedList(params: PurchaseNeedQuery): Promise<PurchaseNeedListResponse> {
  return request.get('/erp/mp/purchase/need/list', { params }).then((res: any) => {
    const rows = (res.rows || []).map((r: any) => ({
      ...r,
      unorderedQty: r.totalQuantity  // backend puts unordered qty in totalQuantity field
    }))
    return { rows, total: res.total || 0 }
  })
}

// 查询采购计划需求汇总
export function getPurchaseNeedSummary(params: PurchaseNeedQuery): Promise<PurchaseNeedSummary> {
  return request.get('/erp/mp/purchase/need/summary', { params }).then((res: any) => res.data || {})
}

// 导出采购计划需求表
export function exportPurchaseNeed(params: PurchaseNeedQuery): Promise<Blob> {
  return request.post('/erp/mp/purchase/need/export', params, { responseType: 'blob' })
}