package logic

import (
	"context"
	"fmt"

	"bj_power_mes/ent"
	"bj_power_mes/ent/bomitem"
)

type BomItemReq struct {
	ProductCode  string  `json:"productCode"`
	MaterialCode string  `json:"materialCode"`
	MaterialName string  `json:"materialName"`
	Spec         string  `json:"spec"`
	Unit         string  `json:"unit"`
	ManageMode   string  `json:"manageMode"`
	UnitQty      float64 `json:"unitQty"`
	LossRate     float64 `json:"lossRate"`
	RequiredQty  float64 `json:"requiredQty"`
	SerialSns    []string `json:"serialSns"`
}

// SaveBom 保存产品 BOM（覆盖式：按 产品编码+物料编码 做 upsert）
func (s *Service) SaveBom(ctx context.Context, productCode string, items []BomItemReq, operator string) error {
	for _, it := range items {
		if it.ManageMode == "" {
			it.ManageMode = "2"
		}
		exist, err := s.ctx.EntClient.BomItem.Query().
			Where(bomitem.ProductCode(productCode), bomitem.MaterialCode(it.MaterialCode)).First(ctx)
		if err == nil && exist != nil {
			u := s.ctx.EntClient.BomItem.UpdateOneID(exist.ID).
				SetMaterialName(it.MaterialName).SetSpec(it.Spec).SetUnit(it.Unit).
				SetManageMode(it.ManageMode).SetUnitQty(it.UnitQty).SetLossRate(it.LossRate)
			if len(it.SerialSns) > 0 {
				u.SetSerialSns(it.SerialSns)
			}
			if _, err := u.Save(ctx); err != nil {
				return fmt.Errorf("更新BOM物料 %s 失败: %w", it.MaterialCode, err)
			}
		} else {
			b := s.ctx.EntClient.BomItem.Create().
				SetProductCode(productCode).SetMaterialCode(it.MaterialCode).
				SetMaterialName(it.MaterialName).SetSpec(it.Spec).SetUnit(it.Unit).
				SetManageMode(it.ManageMode).SetUnitQty(it.UnitQty).SetLossRate(it.LossRate)
			if len(it.SerialSns) > 0 {
				b.SetSerialSns(it.SerialSns)
			}
			if _, err := b.Save(ctx); err != nil {
				return fmt.Errorf("保存BOM物料 %s 失败: %w", it.MaterialCode, err)
			}
		}
	}
	s.ctx.EventLog.Write(ctx, "bom.save", "", operator, "product_bom", productCode, "保存产品BOM", map[string]any{"count": len(items)})
	return nil
}

func (s *Service) ListBom(ctx context.Context, productCode string) ([]*ent.BomItem, error) {
	q := s.ctx.EntClient.BomItem.Query()
	if productCode != "" {
		q = q.Where(bomitem.ProductCode(productCode))
	}
	return q.Order(ent.Asc(bomitem.FieldID)).All(ctx)
}