/**
 * 수주 등록/수정 모달 — 품목별 등록 포장재 옵션 조회
 * - pkg_unit_item에서 item_number로 매핑된 포장재 + 입수수량
 * - pkg_unit JOIN으로 포장재 이름·종류 함께 반환
 */

import { Response } from "express";
import { AuthenticatedRequest } from "../types/auth";
import { getPool } from "../database/db";
import { logger } from "../utils/logger";

export async function getPackagingOptions(req: AuthenticatedRequest, res: Response) {
  try {
    const companyCode = req.user!.companyCode;
    const itemNumber = (req.params.itemNumber || "").trim();
    if (!itemNumber) {
      return res.status(400).json({ success: false, message: "itemNumber가 필요합니다" });
    }

    const pool = getPool();
    const result = await pool.query(
      `SELECT
         pui.pkg_code,
         pui.pkg_qty,
         pu.pkg_name,
         pu.pkg_type
       FROM pkg_unit_item pui
       LEFT JOIN pkg_unit pu
         ON pu.pkg_code = pui.pkg_code AND pu.company_code = pui.company_code
       WHERE pui.company_code = $1
         AND pui.item_number = $2
       ORDER BY pui.created_date ASC`,
      [companyCode, itemNumber]
    );

    const options = result.rows.map((r: any) => ({
      pkg_code: r.pkg_code,
      pkg_name: r.pkg_name || r.pkg_code,
      pkg_type: r.pkg_type || "",
      pkg_qty_per_unit: Number(r.pkg_qty) || 0, // 1 포장당 입수 수량
    }));

    return res.json({
      success: true,
      itemNumber,
      total: options.length,
      options,
    });
  } catch (error: any) {
    logger.error("품목별 포장재 옵션 조회 실패", { error: error.message });
    return res.status(500).json({ success: false, message: error.message });
  }
}