Initial commit

internal/logic/expandurllogic.go

@@ -0,0 +1,46 @@
+package logic
+
+import (
+	"context"
+	"fmt"
+
+	"5feet11/internal/db"
+	"5feet11/internal/svc"
+	"5feet11/internal/types"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type ExpandUrlLogic struct {
+	logx.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewExpandUrlLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ExpandUrlLogic {
+	return &ExpandUrlLogic{
+		Logger: logx.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *ExpandUrlLogic) ExpandUrl(req *types.ExpandReq) (resp *types.ExpandResp, err error) {
+	queryUrl := db.UrlTable.SelectBuilder("redirect_url").Query(l.svcCtx.DB)
+	queryUrl.BindStruct(db.UrlModel{Id: req.Snowflake})
+
+	var urls []db.UrlModel
+	if err := queryUrl.Select(&urls); err != nil {
+		return nil, err
+	}
+
+	if len(urls) != 1 {
+		return nil, fmt.Errorf("no URL found")
+	}
+
+	resp = &types.ExpandResp{
+		RedirectUrl: urls[0].RedirectUrl,
+	}
+
+	return resp, err
+}