WebUI Redesign and Component 1: category mapper fixes

src/Predictalytics.Infrastructure/Data/AppDbContext.cs

@@ -1,5 +1,6 @@
 using Predictalytics.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
 
 namespace Predictalytics.Infrastructure.Data;
 
@@ -25,7 +26,49 @@ public class AppDbContext : DbContext
     public DbSet<TraderTrait> TraderTraits => Set<TraderTrait>();
     public DbSet<TraderWindowMetrics> TraderWindowMetrics => Set<TraderWindowMetrics>();
 
-    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
+    private readonly bool _isReadOnly;
+
+    public AppDbContext(DbContextOptions<AppDbContext> options, Microsoft.Extensions.Configuration.IConfiguration? configuration = null) 
+        : base(options) 
+    {
+        _isReadOnly = configuration?.GetValue<bool>("ApiSettings:ReadOnlyDatabase", false) ?? false;
+    }
+
+    public override int SaveChanges()
+    {
+        if (_isReadOnly)
+        {
+            throw new System.InvalidOperationException("Database is configured as Read-Only.");
+        }
+        return base.SaveChanges();
+    }
+
+    public override int SaveChanges(bool acceptAllChangesOnSuccess)
+    {
+        if (_isReadOnly)
+        {
+            throw new System.InvalidOperationException("Database is configured as Read-Only.");
+        }
+        return base.SaveChanges(acceptAllChangesOnSuccess);
+    }
+
+    public override Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
+    {
+        if (_isReadOnly)
+        {
+            throw new System.InvalidOperationException("Database is configured as Read-Only.");
+        }
+        return base.SaveChangesAsync(cancellationToken);
+    }
+
+    public override Task<int> SaveChangesAsync(bool acceptAllChangesOnSuccess, CancellationToken cancellationToken = default)
+    {
+        if (_isReadOnly)
+        {
+            throw new System.InvalidOperationException("Database is configured as Read-Only.");
+        }
+        return base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken);
+    }
 
     protected override void OnModelCreating(ModelBuilder mb)
     {