1 files changed, 25 insertions, 2 deletions
diff --git a/manga_list.go b/manga_list.go
index 1c04463..373c733 100644
--- a/manga_list.go
+++ b/manga_list.go
@@ -78,10 +78,33 @@ func (c Client) GetMangaList(mangas *[]Manga, params *ListParams) (bool, error)
 }
 
 func (c Client) UpdateManga(res *MangaUpdateResponse, id int, params map[string]interface{}) error {
-	// TODO: validate params
 	p := url.Values{}
 	for k, v := range params {
-		p.Set(k, fmt.Sprint(v))
+		vString := fmt.Sprint(v)
+		var err error
+
+		// validate params
+		switch(k) {
+		case Status:
+			err = validateAnimeListStatus(vString)
+		case Score:
+			err = validateScore(v.(int))
+		case Priority:
+			err = validatePriority(v.(int))
+		case RereadValue:
+			err = validateRereadValue(v.(int))
+		case Tags, Comments, IsRereading, ChaptersRead, VolumesRead, TimesReread:
+			// these ones don't need to be validated
+			err = nil
+		default:
+			err = ErrUnknownUpdateParam
+		}
+
+		if err != nil {
+			return err
+		}
+
+		p.Set(k, vString)
 	}
 
 	body, err := c.put(getUpdateQuery(id, "manga"), p)