package logic

import (
	"context"
	"database/sql"
	"time"

	"muyu-apiserver/pkg/metrics"
	"muyu-apiserver/pkg/tenantctx"
	"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 DeleteProductLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

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

func (l *DeleteProductLogic) DeleteProduct(in *pb.DeleteProductReq) (*pb.Empty, error) {
	product, err := l.svcCtx.ProductModel.FindOneByProductId(l.ctx, in.ProductId)
	if err != nil {
		return nil, status.Error(codes.NotFound, "product not found")
	}

	now := time.Now()
	product.DeletedAt = sql.NullTime{Time: now, Valid: true}

	err = l.svcCtx.ProductModel.Update(l.ctx, product)
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	tenantId := tenantctx.ExtractTenantId(l.ctx)
	metrics.ProductDeletedTotal.WithLabelValues(tenantId).Inc()

	return &pb.Empty{}, nil
}