/**
 * 생산계획 API 클라이언트
 */

import apiClient from "./client";

// ─── 타입 정의 ───

export interface OrderSummaryItem {
  item_code: string;
  item_name: string;
  total_order_qty: number;
  total_ship_qty: number;
  total_balance_qty: number;
  order_count: number;
  earliest_due_date: string | null;
  current_stock: number;
  safety_stock: number;
  existing_plan_qty: number;
  in_progress_qty: number;
  required_plan_qty: number;
  orders: OrderDetail[];
}

export interface OrderDetail {
  id: string;
  order_no: string;
  part_code: string;
  part_name: string;
  order_qty: number;
  ship_qty: number;
  balance_qty: number;
  due_date: string | null;
  status: string;
  customer_name: string | null;
}

export interface StockShortageItem {
  item_code: string;
  item_name: string;
  current_qty: number;
  safety_qty: number;
  shortage_qty: number;
  recommended_qty: number;
  last_in_date: string | null;
}

export interface ProductionPlan {
  id: number;
  company_code: string;
  plan_no: string;
  plan_date: string;
  item_code: string;
  item_name: string;
  product_type: string;
  plan_qty: number;
  completed_qty: number;
  progress_rate: number;
  start_date: string;
  end_date: string;
  due_date: string | null;
  equipment_id: number | null;
  equipment_code: string | null;
  equipment_name: string | null;
  status: string;
  priority: string | null;
  order_no: string | null;
  parent_plan_id: number | null;
  remarks: string | null;
}

export interface GenerateScheduleRequest {
  items: {
    item_code: string;
    item_name: string;
    required_qty: number;
    earliest_due_date: string;
    hourly_capacity?: number;
    daily_capacity?: number;
    lead_time?: number;
  }[];
  options?: {
    safety_lead_time?: number;
    recalculate_unstarted?: boolean;
    product_type?: string;
  };
}

export interface GenerateScheduleResponse {
  summary: {
    total: number;
    new_count: number;
    kept_count: number;
    deleted_count: number;
  };
  schedules: ProductionPlan[];
}

// ─── API 함수 ───

/** 수주 데이터 조회 (품목별 그룹핑) */
export async function getOrderSummary(params?: {
  excludePlanned?: boolean;
  itemCode?: string;
  itemName?: string;
}) {
  const queryParams = new URLSearchParams();
  if (params?.excludePlanned) queryParams.set("excludePlanned", "true");
  if (params?.itemCode) queryParams.set("itemCode", params.itemCode);
  if (params?.itemName) queryParams.set("itemName", params.itemName);

  const qs = queryParams.toString();
  const url = `/api/production/order-summary${qs ? `?${qs}` : ""}`;
  const response = await apiClient.get(url);
  return response.data as { success: boolean; data: OrderSummaryItem[] };
}

/** 안전재고 부족분 조회 */
export async function getStockShortage() {
  const response = await apiClient.get("/api/production/stock-shortage");
  return response.data as { success: boolean; data: StockShortageItem[] };
}

/** 생산계획 상세 조회 */
export async function getPlanById(planId: number) {
  const response = await apiClient.get(`/api/production/plan/${planId}`);
  return response.data as { success: boolean; data: ProductionPlan };
}

/** 생산계획 수정 */
export async function updatePlan(planId: number, data: Partial<ProductionPlan>) {
  const response = await apiClient.put(`/api/production/plan/${planId}`, data);
  return response.data as { success: boolean; data: ProductionPlan };
}

/** 생산계획 삭제 */
export async function deletePlan(planId: number) {
  const response = await apiClient.delete(`/api/production/plan/${planId}`);
  return response.data as { success: boolean; message: string };
}

/** 자동 스케줄 생성 */
export async function generateSchedule(request: GenerateScheduleRequest) {
  const response = await apiClient.post("/api/production/generate-schedule", request);
  return response.data as { success: boolean; data: GenerateScheduleResponse };
}

/** 스케줄 병합 */
export async function mergeSchedules(scheduleIds: number[], productType?: string) {
  const response = await apiClient.post("/api/production/merge-schedules", {
    schedule_ids: scheduleIds,
    product_type: productType || "완제품",
  });
  return response.data as { success: boolean; data: ProductionPlan };
}

/** 반제품 계획 자동 생성 */
export async function generateSemiSchedule(
  planIds: number[],
  options?: { considerStock?: boolean; excludeUsed?: boolean }
) {
  const response = await apiClient.post("/api/production/generate-semi-schedule", {
    plan_ids: planIds,
    options: options || {},
  });
  return response.data as { success: boolean; data: { count: number; schedules: ProductionPlan[] } };
}

/** 스케줄 분할 */
export async function splitSchedule(planId: number, splitQty: number) {
  const response = await apiClient.post(`/api/production/plan/${planId}/split`, {
    split_qty: splitQty,
  });
  return response.data as {
    success: boolean;
    data: { original: { id: number; plan_qty: number }; split: ProductionPlan };
  };
}