chore: minor

util/homeassistant/connection.go

@@ -273,22 +273,17 @@ func (c *Connection) GetPhaseFloatStates(entities []string) (float64, float64, f
 		return 0, 0, 0, errors.New("invalid phase entities")
 	}
 
-	var l1, l2, l3 float64
-	var err error
+	var res [3]float64
 
-	if l1, err = c.GetFloatState(entities[0]); err != nil {
-		return 0, 0, 0, fmt.Errorf("phase L1: %w", err)
+	for i := range res {
+		f, err := c.GetFloatState(entities[i])
+		if err != nil {
+			return 0, 0, 0, fmt.Errorf("phase L%d: %w", i+1, err)
+		}
+		res[i] = f
 	}
 
-	if l2, err = c.GetFloatState(entities[1]); err != nil {
-		return 0, 0, 0, fmt.Errorf("phase L2: %w", err)
-	}
-
-	if l3, err = c.GetFloatState(entities[2]); err != nil {
-		return 0, 0, 0, fmt.Errorf("phase L3: %w", err)
-	}
-
-	return l1, l2, l3, nil
+	return res[0], res[1], res[2], nil
 }
 
 // ValidatePhaseEntities validates that phase entity arrays contain 1 or 3 entities
@@ -297,12 +292,13 @@ func ValidatePhaseEntities(phases []string) ([]string, error) {
 		t := strings.TrimSpace(s)
 		return t, t != ""
 	})
+
 	switch len(entities) {
 	case 0:
 		return nil, nil
 	case 3:
 		return entities, nil
 	default:
-		return nil, fmt.Errorf("must contain three-phase entities (L1, L2, L3), got %d", len(entities))
+		return nil, errors.New("invalid phase entities")
 	}
 }