#93: Reduce build errors

Database/Contexts/AlbumContext.cs

@@ -6,7 +6,7 @@ namespace Icarus.Database.Contexts;
 
 public class AlbumContext : DbContext
 {
-    public DbSet<Album> Albums { get; set; }
+    public DbSet<Album>? Albums { get; set; }
 
     public AlbumContext(DbContextOptions<AlbumContext> options) : base(options) { }
     public AlbumContext(string connString) : base(new DbContextOptionsBuilder<AlbumContext>()
@@ -22,11 +22,12 @@ public class AlbumContext : DbContext
 
     public Album RetrieveRecord(Album album)
     {
-        return Albums.FirstOrDefault(alb => alb.Id == album.Id);
+        var albm = Albums!.FirstOrDefault(alb => alb.Id == album.Id);
+        return albm!;
     }
 
     public bool DoesRecordExist(Album album)
     {
-        return Albums.FirstOrDefault(alb => alb.Id == album.Id) != null ? true : false;
+        return Albums!.FirstOrDefault(alb => alb.Id == album.Id) != null ? true : false;
     }
 }

Database/Contexts/ArtistContext.cs

@@ -23,7 +23,7 @@ public class ArtistContext : DbContext
     public Artist RetrieveRecord(Artist artist)
     {
 
-        return Artists.FirstOrDefault(arst => arst.Id == artist.Id);
+        return Artists.FirstOrDefault(arst => arst.Id == artist.Id)!;
     }
 
 

Database/Contexts/CoverArtContext.cs

@@ -6,7 +6,9 @@ namespace Icarus.Database.Contexts;
 
 public class CoverArtContext : DbContext
 {
-    public DbSet<CoverArt> CoverArtImages { get; set; }
+    #region Properties
+    public DbSet<CoverArt>? CoverArtImages { get; set; }
+    #endregion
 
     public CoverArtContext(DbContextOptions<CoverArtContext> options) : base(options) { }
     public CoverArtContext(string connString) : base(new DbContextOptionsBuilder<CoverArtContext>()
@@ -22,11 +24,11 @@ public class CoverArtContext : DbContext
 
     public CoverArt RetrieveRecord(CoverArt cover)
     {
-        return CoverArtImages.FirstOrDefault(cov => cov.Id == cover.Id);
+        return CoverArtImages!.FirstOrDefault(cov => cov.Id == cover.Id)!;
     }
 
     public bool DoesRecordExist(CoverArt cover)
     {
-        return CoverArtImages.FirstOrDefault(cov => cov.Id == cover.Id) != null ? true : false;
+        return CoverArtImages!.FirstOrDefault(cov => cov.Id == cover.Id) != null ? true : false;
     }
 }

Database/Contexts/GenreContext.cs

@@ -6,7 +6,10 @@ namespace Icarus.Database.Contexts;
 
 public class GenreContext : DbContext
 {
-    public DbSet<Genre> Genres { get; set; }
+    #region Properties
+    public DbSet<Genre>? Genres { get; set; }
+    #endregion
+
     public GenreContext(DbContextOptions<GenreContext> options) : base(options) { }
     public GenreContext(string connString) : base(new DbContextOptionsBuilder<GenreContext>()
                         .UseMySQL(connString).Options)
@@ -22,11 +25,12 @@ public class GenreContext : DbContext
 
     public Genre RetrieveRecord(Genre genre)
     {
-        return Genres.FirstOrDefault(gnr => gnr.Id == genre.Id);
+        var gnre = Genres!.FirstOrDefault(gnr => gnr.Id == genre.Id);
+        return gnre!;
     }
 
     public bool DoesRecordExist(Genre genre)
     {
-        return Genres.FirstOrDefault(gnr => gnr.Id == genre.Id) != null ? true : false;
+        return Genres!.FirstOrDefault(gnr => gnr.Id == genre.Id) != null ? true : false;
     }
 }

Database/Contexts/SongContext.cs

@@ -6,7 +6,7 @@ namespace Icarus.Database.Contexts;
 
 public class SongContext : DbContext
 {
-    public DbSet<Song> Songs { get; set; }
+    public DbSet<Song>? Songs { get; set; }
 
     public SongContext(string connString) : base(new DbContextOptionsBuilder<SongContext>()
                         .UseMySQL(connString).Options)
@@ -41,12 +41,13 @@ public class SongContext : DbContext
 
     public Song RetrieveRecord(Song song)
     {
-        return Songs.FirstOrDefault(sng => sng.Id == song.Id);
+        var sng = Songs!.FirstOrDefault(sng => sng.Id == song.Id);
+        return sng!;
     }
 
 
     public bool DoesRecordExist(Song song)
     {
-        return Songs.FirstOrDefault(sng => sng.Id == song.Id) != null ? true : false;
+        return Songs!.FirstOrDefault(sng => sng.Id == song.Id) != null ? true : false;
     }
 }

Database/Contexts/UserContext.cs

@@ -32,7 +32,7 @@ public class UserContext : DbContext
     
     public User RetrieveRecord(User user)
     {
-        return Users.FirstOrDefault(usr => usr.Id == user.Id);
+        return Users.FirstOrDefault(usr => usr.Id == user.Id)!;
     }
 
     public bool DoesRecordExist(User user)