Add metadata handling

main.go

@@ -191,6 +191,61 @@ func Bump(username string) {
 	}
 }
 
+type Metadata struct {
+	MetaKey	string `db:meta_key`
+	MetaValue string `db:meta_value`
+}
+
+func GetAllMeta(username string) (map[string]string) {
+	meta:=make(map[string]string)
+	q:=fmt.Sprintf(`select meta_key, meta_value 
+			from %s_user_metadata where 
+			user_id=(select userid from %s_auth where username=?)`,
+			c.TablePrefix, c.TablePrefix)
+	rows,err:=c.db.Queryx(q, username)
+	if err != nil {
+		log.Printf("scsusers.GetAllMeta: %s: %s\n", username, err.Error())
+		return meta
+	}
+	var m Metadata	
+	for rows.Next() {
+		err=rows.StructScan(&m)		
+		if err != nil {
+			log.Printf("scsusers.GetAllMeta: StructScan: %s\n", username, err.Error())
+			return meta
+		}
+		meta[m.MetaKey]=m.MetaValue
+	}
+	return meta
+}
+
+func GetMeta(username string, metakey string) string {
+	var v string
+	q:=fmt.Sprintf(`select meta_value from %s_user_metadata where 
+		user_id=(select userid from %s_auth where username=?) AND meta_key=?`, c.TablePrefix, c.TablePrefix)
+	err:=c.db.Get(&v, q, username, metakey)
+	if err != nil {
+		log.Printf("scsusers.GetMeta: %s - %s - %s\n", username, metakey, err.Error())
+	}
+	return v
+}
+
+func SetMeta(username string, metakey string, metavalue string) {
+	var err error
+	if metavalue=="" {
+		q:=fmt.Sprintf(`delete from %s_user_metadata where user_id=(select userid from %s_auth where username=?) AND meta_key=?`,
+			c.TablePrefix, c.TablePrefix)
+	_, err=c.db.Exec(q, username, metakey)
+	} else {
+		q:=fmt.Sprintf(`insert into %s_user_metadata (user_id, meta_key, meta_value) VALUES
+		((select userid from %s_auth where username=?), ?, ?)`, c.TablePrefix, c.TablePrefix)
+		_,err=c.db.Exec(q, username, metakey, metavalue)
+	}
+	if err != nil {
+		log.Printf("scsusers.SetMeta: %s %s %s %s\n", username, metakey, metavalue, err.Error())
+	}
+}
+
 func GetRoles(username string) []string {
 	var roles []string
 	q:=fmt.Sprintf(`select role_name from %s_roles