fix(makhno): handle voices with different season counts

Previously, the code assumed all voices had the same number of seasons
as the first voice, which could cause errors or incorrect behavior when
voices had varying season counts. Now calculates the maximum seasons
across all voices and safely handles cases where a specific voice
doesn't have the requested season index.

Makhno/Controller.cs

@@ -196,13 +196,16 @@ namespace Makhno
                 return OnError();
             }
 
+            int maxSeasons = playerData.Voices.Max(v => v.Seasons?.Count ?? 0);
+            if (maxSeasons <= 0)
+                return OnError();
+
             if (season == -1)
             {
-                var firstVoice = playerData.Voices.First();
                 var season_tpl = new SeasonTpl();
-                for (int i = 0; i < firstVoice.Seasons.Count; i++)
+                for (int i = 0; i < maxSeasons; i++)
                 {
-                    var seasonItem = firstVoice.Seasons[i];
+                    var seasonItem = playerData.Voices.Select(v => v.Seasons.ElementAtOrDefault(i)).FirstOrDefault(s => s != null);
                     string seasonName = seasonItem.Title ?? $"Сезон {i + 1}";
                     int seasonNumber = i + 1;
                     string link = $"{host}/makhno?imdb_id={imdb_id}&title={HttpUtility.UrlEncode(title)}&original_title={HttpUtility.UrlEncode(original_title)}&year={year}&serial=1&season={seasonNumber}";
@@ -213,7 +216,7 @@ namespace Makhno
             }
 
             int seasonIndex = season > 0 ? season - 1 : season;
-            if (seasonIndex < 0 || seasonIndex >= playerData.Voices.First().Seasons.Count)
+            if (seasonIndex < 0 || seasonIndex >= maxSeasons)
                 return OnError();
 
             var voice_tpl = new VoiceTpl();
@@ -229,7 +232,11 @@ namespace Makhno
             {
                 var voice = playerData.Voices[i];
                 string voiceName = voice.Name ?? $"Озвучка {i + 1}";
-                int seasonNumber = seasonIndex + 1;
+                int voiceSeasonIndex = GetSeasonIndexForVoice(voice, seasonIndex);
+                if (voiceSeasonIndex < 0)
+                    continue;
+
+                int seasonNumber = voiceSeasonIndex + 1;
                 string voiceLink = $"{host}/makhno?imdb_id={imdb_id}&title={HttpUtility.UrlEncode(title)}&original_title={HttpUtility.UrlEncode(original_title)}&year={year}&serial=1&season={seasonNumber}&t={i}";
                 bool isActive = selectedVoice == i.ToString();
                 voice_tpl.Append(voiceName, isActive, voiceLink);
@@ -238,9 +245,10 @@ namespace Makhno
             if (!string.IsNullOrEmpty(selectedVoice) && int.TryParse(selectedVoice, out int voiceIndex) && voiceIndex < playerData.Voices.Count)
             {
                 var selectedVoiceData = playerData.Voices[voiceIndex];
-                if (seasonIndex < selectedVoiceData.Seasons.Count)
+                int effectiveSeasonIndex = GetSeasonIndexForVoice(selectedVoiceData, seasonIndex);
+                if (effectiveSeasonIndex >= 0)
                 {
-                    var selectedSeason = selectedVoiceData.Seasons[seasonIndex];
+                    var selectedSeason = selectedVoiceData.Seasons[effectiveSeasonIndex];
                     var sortedEpisodes = selectedSeason.Episodes.OrderBy(e => ExtractEpisodeNumber(e.Title)).ToList();
 
                     for (int i = 0; i < sortedEpisodes.Count; i++)
@@ -249,7 +257,7 @@ namespace Makhno
                         if (!string.IsNullOrEmpty(episode.File))
                         {
                             string streamUrl = BuildStreamUrl(init, episode.File);
-                            int seasonNumber = seasonIndex + 1;
+                            int seasonNumber = effectiveSeasonIndex + 1;
                             episode_tpl.Append(
                                 episode.Title,
                                 title ?? original_title,
@@ -278,6 +286,17 @@ namespace Makhno
             return match.Success ? int.Parse(match.Groups[1].Value) : 0;
         }
 
+        private int GetSeasonIndexForVoice(Voice voice, int requestedSeasonIndex)
+        {
+            if (voice?.Seasons == null || voice.Seasons.Count == 0)
+                return -1;
+
+            if (requestedSeasonIndex >= 0 && requestedSeasonIndex < voice.Seasons.Count)
+                return requestedSeasonIndex;
+
+            return 0;
+        }
+
         private async Task<ResolveResult> ResolvePlaySource(string imdbId, string title, string originalTitle, int year, int serial, MakhnoInvoke invoke)
         {
             string playUrl = null;