update naming of functions, add option to get count of unread messages of user

packages/convertions/convertions.go

@@ -1,6 +1,7 @@
 package convertions
 
 import (
+	"errors"
 	"fmt"
 	"strconv"
 	"strings"
@@ -40,10 +41,30 @@ func Uint32ToRgba(v uint32) *types.Rgba {
 	return &types.Rgba{uint8(v >> 24), uint8(v >> 16), uint8(v >> 8), uint8(v)}
 }
 
-func ConvertStringUuid(str string) (uuid.UUID, error) {
+func StringToUuid(str string) (uuid.UUID, error) {
 	return uuid.Parse(str)
 }
 
-func ConvertStringTimestamp(str string) (time.Time, error) {
+func StringToUuidSlice(uuidStr string) (*[]uuid.UUID, error) {
+	if uuidStr == "" {
+		return nil, errors.New("empty string")
+	}
+
+	parts := strings.Split(uuidStr, ",")
+
+	slice := make([]uuid.UUID, len(parts))
+
+	for _, part := range parts {
+		id, err := StringToUuid(part)
+		if err != nil {
+			return nil, err
+		}
+
+		slice = append(slice, id)
+	}
+	return &slice, nil
+}
+
+func StringToTimestamp(str string) (time.Time, error) {
 	return time.Parse(time.RFC3339, str)
 }