Add settings endpoints and registration status check: implement new API endpoints for settings management, including registration status retrieval, and update the registration command handler to enforce registration rules based on site settings.

backend/src/TeleWave.Infrastructure/Persistence/AppDbContext.cs

@@ -6,6 +6,7 @@ using TeleWave.Domain.Auth;
 using TeleWave.Domain.Broadcast;
 using TeleWave.Domain.Library;
 using TeleWave.Domain.Media;
+using TeleWave.Domain.Settings;
 using TeleWave.Infrastructure.Identity;
 
 namespace TeleWave.Infrastructure.Persistence;
@@ -24,6 +25,7 @@ public class AppDbContext(DbContextOptions<AppDbContext> options)
     public DbSet<Channel> Channels => Set<Channel>();
     public DbSet<ScheduleEntry> ScheduleEntries => Set<ScheduleEntry>();
     public DbSet<BumperAsset> BumperAssets => Set<BumperAsset>();
+    public DbSet<AppSetting> AppSettings => Set<AppSetting>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {

backend/src/TeleWave.Infrastructure/Persistence/Configurations/AppSettingConfiguration.cs

@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using TeleWave.Domain.Settings;
+
+namespace TeleWave.Infrastructure.Persistence.Configurations;
+
+public class AppSettingConfiguration : IEntityTypeConfiguration<AppSetting>
+{
+    public void Configure(EntityTypeBuilder<AppSetting> builder)
+    {
+        builder.HasKey(x => x.Key);
+        builder.Property(x => x.Key).HasMaxLength(128);
+        builder.Property(x => x.Value).IsRequired().HasMaxLength(1024);
+    }
+}