MAL progress fetch

schaffer.go

@@ -128,3 +128,38 @@ func SearchSeason(animeId int64) (*Anime, error) {
 	}
 	return nil, errors.New("anime not found")
 }
+
+func FetchProgress(animeId, userId int64, username string, progress int) (int, time.Time, error) {
+	// check watching first
+	list, _, err := GetUserAnimeListData(username, malApiStatusW)
+	if err != nil {
+		return 0, time.Time{}, err
+	}
+	for _, a := range list.Data {
+		// check if found
+		if a.Node.ID == animeId {
+			// check if progress changed
+			if progress != a.ListStatus.NumEpisodesWatched {
+				return a.ListStatus.NumEpisodesWatched, a.ListStatus.UpdatedAt, nil
+			}
+			return progress, a.ListStatus.UpdatedAt, nil
+		}
+	}
+	// check completed
+	list, _, err = GetUserAnimeListData(username, malApiStatusC)
+	if err != nil {
+		return 0, time.Time{}, err
+	}
+	for _, a := range list.Data {
+		// check if found
+		if a.Node.ID == animeId {
+			// check if progress changed
+			if progress != a.ListStatus.NumEpisodesWatched {
+				return a.ListStatus.NumEpisodesWatched, a.ListStatus.UpdatedAt, nil
+			}
+			return progress, a.ListStatus.UpdatedAt, nil
+		}
+	}
+	// has no progress or dropped/hold
+	return 0, time.Now(), nil
+}