package pay

import (
	"context"
	"strings"

	gatewaypb "chatappgateway/api/proto"
	"chatappgateway/internal/apperr"
)

// Client 定义支付服务 gRPC 客户端能力。
type Client interface {
	QueryOrder(ctx context.Context, request *gatewaypb.QueryOrderRequest) (*gatewaypb.QueryOrderResponse, error)
}

// Service 负责订单号校验和下游支付查询。
type Service struct {
	client Client
}

// New 创建支付查询服务。
func New(client Client) *Service {
	return &Service{client: client}
}

// QueryOrder 校验订单号并调用支付服务。
func (s *Service) QueryOrder(ctx context.Context, orderNo string) (*gatewaypb.QueryOrderResponse, error) {
	normalized := strings.TrimSpace(orderNo)
	if normalized == "" {
		return nil, apperr.New(400, "bad_request", "order_no is required")
	}

	return s.client.QueryOrder(ctx, &gatewaypb.QueryOrderRequest{
		OrderNo: normalized,
	})
}