// 批次库存DAO层(逻辑库存)
// 职责：批次CRUD、使用$inc原子操作更新数量
// 紧密耦合：service.StockBatch、service.StockManage(入库出库)
// 注意：Update使用$inc原子操作，GetOne使用NoCache()跳过缓存
package dao

import (
	"assets/consts/public"
	dto "assets/model/dto/stock"
	entity "assets/model/entity/stock"
	"context"

	"gitea.com/red-future/common/db/mongo"
	"gitea.com/red-future/common/utils"
	"go.mongodb.org/mongo-driver/v2/bson"
)

var StockBatch = new(stockBatch)

type stockBatch struct {
}

// Insert 插入
func (d *stockBatch) Insert(ctx context.Context, req *dto.CreateBatchReq) (ids []interface{}, err error) {
	var result *entity.StockBatch
	if err = utils.Struct(req, &result); err != nil {
		return
	}
	ids, err = mongo.DB().Insert(ctx, []interface{}{&result}, public.StockBatchCollection)
	return
}

// Update 更新批次数量（使用$inc原子操作，并发安全）
func (d *stockBatch) Update(ctx context.Context, req *dto.UpdateBatchReq) (err error) {
	filter := bson.M{"_id": req.Id}
	update := bson.M{
		"$inc": bson.M{
			"batchQty":     req.BatchQty,
			"availableQty": req.AvailableQty,
		},
	}
	_, err = mongo.DB().Update(ctx, filter, update, public.StockBatchCollection)
	return
}

// GetOne 根据批次号查询（使用NoCache跳过缓存，确保获取最新数据）
func (d *stockBatch) GetOne(ctx context.Context, batchNo string) (res *entity.StockBatch, err error) {
	filter := bson.M{"batchNo": batchNo}
	err = mongo.DB().NoCache().FindOne(ctx, filter, &res, public.StockBatchCollection)
	return
}

// GetOneById 根据ID查询批次
func (d *stockBatch) GetOneById(ctx context.Context, req *dto.GetBatchReq) (res *entity.StockBatch, err error) {
	filter := bson.M{"_id": req.Id}
	err = mongo.DB().FindOne(ctx, filter, &res, public.StockBatchCollection)
	return
}

// DeleteFake 软删除批次
func (d *stockBatch) DeleteFake(ctx context.Context, req *dto.DeleteBatchReq) error {
	filter := bson.M{"_id": req.Id}
	_, err := mongo.DB().DeleteSoft(ctx, filter, public.StockBatchCollection)
	return err
}

// List 查询批次列表
func (d *stockBatch) List(ctx context.Context, req *dto.ListBatchReq) (res []entity.StockBatch, total int64, err error) {
	filter := bson.M{}
	if req.AssetId != nil {
		filter["assetId"] = req.AssetId
	}
	if req.AssetSkuId != nil {
		filter["assetSkuId"] = req.AssetSkuId
	}
	total, err = mongo.DB().Find(ctx, filter, &res, public.StockBatchCollection, req.Page, req.OrderBy)
	return
}