package dao

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

	"gitea.com/red-future/common/db/mongo"
	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"
	"go.mongodb.org/mongo-driver/v2/bson"
)

var PurchaseOrderItem = new(purchaseOrderItem)

type purchaseOrderItem struct{}

// Insert 插入采购订单明细
func (d *purchaseOrderItem) Insert(ctx context.Context, req *dto.CreatePurchaseOrderItemReq) (ids []any, err error) {
	var result *entity.PurchaseOrderItem
	if err = gconv.Struct(req, &result); err != nil {
		return
	}
	ids, err = mongo.DB().Insert(ctx, []interface{}{&result}, public.PurchaseOrderItemCollection)
	return
}

// BatchInsert 批量插入采购订单明细
func (d *purchaseOrderItem) BatchInsert(ctx context.Context, req *dto.BatchCreatePurchaseOrderItemsReq) (ids []any, err error) {
	items := make([]*entity.PurchaseOrderItem, 0, len(req.Items))
	for _, item := range req.Items {
		var result *entity.PurchaseOrderItem
		if err = gconv.Struct(item, &result); err != nil {
			return
		}
		items = append(items, result)
	}
	// 转换为 interface{} 切片
	interfaces := make([]interface{}, len(items))
	for i, item := range items {
		interfaces[i] = item
	}
	ids, err = mongo.DB().Insert(ctx, interfaces, public.PurchaseOrderItemCollection)
	return
}

// GetOne 获取单个采购订单明细
func (d *purchaseOrderItem) GetOne(ctx context.Context, id *bson.ObjectID) (item *entity.PurchaseOrderItem, err error) {
	filter := bson.M{"_id": id}
	err = mongo.DB().FindOne(ctx, filter, &item, public.PurchaseOrderItemCollection)
	return
}

// Update 更新采购订单明细
func (d *purchaseOrderItem) Update(ctx context.Context, req *dto.UpdatePurchaseOrderItemReq) (err error) {
	buildUpdateData, err := mongo.BuildUpdateData(ctx, req)
	if err != nil {
		return
	}
	filter := bson.M{"_id": req.ID}
	update := bson.M{"$set": buildUpdateData}
	_, err = mongo.DB().Update(ctx, filter, update, public.PurchaseOrderItemCollection)
	return
}

// IncrementInboundQty 原子增加已入库数量（并发安全）
// 使用$inc + $expr条件：inboundQty + deltaQty <= passQuantity，防止并发超量入库
func (d *purchaseOrderItem) IncrementInboundQty(ctx context.Context, id *bson.ObjectID, deltaQty int) (err error) {
	filter := bson.M{
		"_id": id,
		"$expr": bson.M{
			"$lte": bson.A{
				bson.M{"$add": bson.A{"$inboundQty", deltaQty}},
				"$passQuantity",
			},
		},
	}
	update := bson.M{
		"$inc": bson.M{
			"inboundQty": deltaQty,
		},
	}
	modifiedCount, err := mongo.DB().Update(ctx, filter, update, public.PurchaseOrderItemCollection)
	if err != nil {
		return
	}
	if modifiedCount == 0 {
		return gerror.Newf("入库数量超出签收数量限制，本次入库%d", deltaQty)
	}
	return
}

// DeleteFake 删除采购订单明细-根据id进行假删
func (d *purchaseOrderItem) DeleteFake(ctx context.Context, id *bson.ObjectID) (err error) {
	filter := bson.M{"_id": id}
	_, err = mongo.DB().DeleteSoft(ctx, filter, public.PurchaseOrderItemCollection)
	return
}

// List 获取采购订单明细列表
func (d *purchaseOrderItem) List(ctx context.Context, req *dto.ListPurchaseOrderItemsReq) (res []*entity.PurchaseOrderItem, total int64, err error) {
	filter, err := d.buildListFilter(ctx, req)
	if err != nil {
		return
	}

	total, err = mongo.DB().Find(ctx, filter, &res, public.PurchaseOrderItemCollection, nil, nil)
	return
}

// ListByOrderId 根据订单ID获取采购订单明细列表
func (d *purchaseOrderItem) ListByOrderId(ctx context.Context, orderId *bson.ObjectID) (res []*entity.PurchaseOrderItem, err error) {
	filter := bson.M{"orderId": orderId}
	_, err = mongo.DB().Find(ctx, filter, &res, public.PurchaseOrderItemCollection, nil, nil)
	return
}

// buildListFilter 构建列表查询的过滤条件
func (d *purchaseOrderItem) buildListFilter(ctx context.Context, req *dto.ListPurchaseOrderItemsReq) (filter bson.M, err error) {
	_ = ctx
	filter = bson.M{}

	if req.OrderId != nil {
		filter["orderId"] = req.OrderId
	}
	if req.AssetId != nil {
		filter["assetId"] = req.AssetId
	}
	if req.AssetSkuId != nil {
		filter["assetSkuId"] = req.AssetSkuId
	}
	if !g.IsEmpty(req.ProductName) {
		filter["productName"] = bson.M{"$regex": req.ProductName, "$options": "i"}
	}
	if !g.IsEmpty(req.Brand) {
		filter["brand"] = bson.M{"$regex": req.Brand, "$options": "i"}
	}
	return
}