package logic

import (
	"context"

	"muyu-apiserver/rpc/inventory/internal/svc"
	"muyu-apiserver/rpc/inventory/pb"

	"github.com/zeromicro/go-zero/core/logx"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

type ConfirmStockCheckLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewConfirmStockCheckLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ConfirmStockCheckLogic {
	return &ConfirmStockCheckLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *ConfirmStockCheckLogic) ConfirmStockCheck(in *pb.ConfirmStockCheckReq) (*pb.Empty, error) {
	check, err := l.svcCtx.StockCheckModel.FindOneByCheckId(l.ctx, in.CheckId)
	if err != nil {
		return nil, status.Error(codes.NotFound, "stock check not found")
	}

	if check.Status != 0 && check.Status != 1 {
		return nil, status.Error(codes.FailedPrecondition, "stock check cannot be confirmed in current status")
	}

	details, err := l.svcCtx.CheckDetailModel.FindByCheckId(l.ctx, in.CheckId)
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	for _, d := range details {
		product, err := l.svcCtx.ProductModel.FindOneByProductId(l.ctx, d.ProductId)
		if err != nil {
			return nil, status.Errorf(codes.Internal, "failed to find product %s: %v", d.ProductId, err)
		}

		product.StockQuantity = d.ActualQuantity
		err = l.svcCtx.ProductModel.Update(l.ctx, product)
		if err != nil {
			return nil, status.Errorf(codes.Internal, "failed to update product %s stock: %v", d.ProductId, err)
		}
	}

	check.Status = 2
	err = l.svcCtx.StockCheckModel.Update(l.ctx, check)
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	return &pb.Empty{}, nil
}