Got most of admin panel working. Data issues fixed

OpenArchival.DataAccess/ApplicationDbContext.cs

@@ -0,0 +1,64 @@
+using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+using OpenArchival.DataAccess;
+using Microsoft.EntityFrameworkCore;
+
+namespace OpenArchival.DataAccess;
+
+public class ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : IdentityDbContext<ApplicationUser>(options)
+{
+    public DbSet<ArtifactGrouping> ArtifactGroupings { get; set; }
+
+    public DbSet<ArtifactEntry> ArtifactEntries { get; set; }
+
+    public DbSet<ArtifactEntryTag> ArtifactEntryTags { get; set; }
+
+    public DbSet<ArchiveCategory> ArchiveCategories { get; set; }
+
+    public DbSet<ListedName> ArtifactAssociatedNames { get; set; }
+
+    public DbSet<FilePathListing> ArtifactFilePaths { get; set; }
+
+    public DbSet<ArtifactDefect> ArtifactDefects { get; set; }
+
+    public DbSet<ArtifactStorageLocation> ArtifactStorageLocations { get; set; }
+
+    public DbSet<ArtifactType> ArtifactTypes { get; set; }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        base.OnModelCreating(modelBuilder);
+
+        modelBuilder.Entity<ArtifactEntry>()
+            .HasMany(p => p.Files)
+            .WithOne(p => p.ParentArtifactEntry)
+            .IsRequired(false);
+
+        modelBuilder.Entity<ArtifactEntry>()
+            .HasMany(a => a.RelatedTo)
+            .WithMany(a => a.RelatedBy)
+            .UsingEntity(j => j.ToTable("ArtifactRelationships"));
+
+        modelBuilder.Entity<ArtifactGrouping>()
+            .OwnsOne(p => p.IdentifierFields)
+            .ToJson();
+        
+        modelBuilder.Entity<ArtifactGrouping>()
+            .HasMany(grouping => grouping.ChildArtifactEntries)
+            .WithOne(entry => entry.ArtifactGrouping)
+            .HasForeignKey(entry => entry.ArtifactGroupingId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        var dictionaryComparer = new ValueComparer<Dictionary<string, string>>(
+            (dictionary1, dictionary2) => dictionary1.OrderBy(pair => pair.Key)
+                                                      .SequenceEqual(dictionary2.OrderBy(pair => pair.Key)),
+
+            dictionary => dictionary.Aggregate(
+                0,
+                (aggregatedHash, pair) => HashCode.Combine(aggregatedHash, pair.Key.GetHashCode(), pair.Value.GetHashCode())),
+
+            sourceDictionary => new Dictionary<string, string>(sourceDictionary)
+        );
+    }
+}