Added configuration reading, redis caching basic, hopefully fixed future season issue

AnimeAnnouncer/AnimeAnnouncer.csproj

@@ -12,6 +12,12 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="8.0.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.21.0" />
+    <PackageReference Include="StackExchange.Redis" Version="2.8.16" />
     <PackageReference Include="TMDbLib" Version="2.2.0" />
   </ItemGroup>
+  <ItemGroup>
+    <None Update="appSettings.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
 </Project>

AnimeAnnouncer/Cache/TMDBCache.cs

@@ -0,0 +1,35 @@
+using System.Text.Json;
+using StackExchange.Redis;
+using TMDbLib.Utilities.Converters;
+
+namespace AnimeAnnouncer.Cache;
+
+public class TMDBCache
+{
+    private readonly ConnectionMultiplexer redis;
+
+    public TimeSpan CacheExpiration { get; set; }
+
+
+    public TMDBCache(String redisConnectionString)
+    {
+        CacheExpiration = TimeSpan.FromDays(3);
+        redis = ConnectionMultiplexer.Connect(redisConnectionString);
+    }
+    public async Task SetCacheItem(String key, TMDBCacheItem item)
+    {
+        var db = redis.GetDatabase();
+        String jsonItem = JsonSerializer.Serialize(item);
+        db.StringSetAsync(key, jsonItem, CacheExpiration);
+    }
+    public async Task<TMDBCacheItem> GetCacheItem(String key)
+    {
+        var db = redis.GetDatabase();
+        String jsonItem = await db.StringGetAsync(key);
+        
+        if(!String.IsNullOrEmpty(jsonItem))
+            return JsonSerializer.Deserialize<TMDBCacheItem>(jsonItem);
+        else
+            return null;
+    }
+}

AnimeAnnouncer/Cache/TMDBCacheItem.cs

@@ -0,0 +1,12 @@
+
+namespace AnimeAnnouncer.Cache
+{
+    public class TMDBCacheItem
+    {
+        public required String Title { get; set; }
+        public int ShowID { get; set; }
+
+        public int LatestSeasonNumber { get; set; }
+        public int LastEpisodeNumber { get; set; }
+    }
+}

AnimeAnnouncer/Program.cs

@@ -1,4 +1,6 @@
-using AnimeAnnouncer.RSS;
+using AnimeAnnouncer.Cache;
+using AnimeAnnouncer.RSS;
+using Microsoft.Extensions.Configuration;
 using TMDbLib.Client;
 
 namespace AnimeAnnouncer
@@ -7,13 +9,33 @@ namespace AnimeAnnouncer
     {
         private static NyaaIndexer nyaaIndexer= new NyaaIndexer();
 
-        private const String TMDBApiKey = "";
-
-        private static TMDbClient tmdbClient = new TMDbClient(TMDBApiKey);
+        private static TMDbClient tmdbClient;
+        private static TMDBCache tmdbCache;
         static void Main(string[] args)
         {
             Console.WriteLine("Starting...");
 
+            var configurationBuilder = new ConfigurationBuilder();
+
+            configurationBuilder.SetBasePath(System.IO.Directory.GetCurrentDirectory());  // errors here
+            configurationBuilder.AddJsonFile(path: "appSettings.json", optional: false, reloadOnChange: true); // errors here
+            
+            var config = configurationBuilder.Build();
+
+            String TMDBApiKey = config["TMDBApiKey"];
+            if(String.IsNullOrEmpty(TMDBApiKey))
+            {
+                Console.WriteLine("ERROR: API key not found in config.");
+                return;
+            }
+            tmdbClient = new TMDbClient(TMDBApiKey);
+
+            String redisCacheConnectionString = config["redisConnectionString"];
+            if(!String.IsNullOrEmpty(redisCacheConnectionString))
+            {
+                tmdbCache = new TMDBCache(redisCacheConnectionString);
+            }
+
             nyaaIndexer.NewPost += OnNewPost;
             nyaaIndexer.RssReadFinished += OnRssReadFinished;
             nyaaIndexer.Start(true);
@@ -61,7 +83,13 @@ namespace AnimeAnnouncer
 
             var showResult = await tmdbClient.GetTvShowAsync(supposedShowId);
 
-            var latestSeason = showResult.Seasons.OrderByDescending(s => s.SeasonNumber).First();
+            var latestSeason = showResult.Seasons.Where(s => s.AirDate.HasValue && s.AirDate.Value < DateTime.Now).OrderByDescending(s => s.SeasonNumber).FirstOrDefault();
+
+            if(latestSeason == null)
+            {
+                Console.WriteLine("Unable to find a viable season from TMDB.");
+                return;
+            }
 
             if(latestSeason.SeasonNumber != int.Parse(season))
             {

AnimeAnnouncer/appSettings.json

@@ -0,0 +1,4 @@
+{
+    "TMDBApiKey": "",
+    "redisConnectionString": "localhost"
+}