feat: add core persistence model

Tiku.Infrastructure/Persistence/Configurations/TenancyConfigurations.cs

@@ -0,0 +1,53 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Tiku.Domain.Identity;
+using Tiku.Domain.Tenancy;
+
+namespace Tiku.Infrastructure.Persistence.Configurations;
+
+internal sealed class TenantConfiguration : IEntityTypeConfiguration<Tenant>
+{
+    public void Configure(EntityTypeBuilder<Tenant> builder)
+    {
+        builder.ConfigureEntity("tenants");
+        builder.ConfigureTimestamps();
+
+        builder.Property(entity => entity.Slug).HasColumnType("citext").HasMaxLength(100);
+        builder.Property(entity => entity.Name).HasMaxLength(200);
+        builder.Property(entity => entity.LegalName).HasMaxLength(300);
+        builder.Property(entity => entity.Status).HasSnakeCaseEnum();
+        builder.Property(entity => entity.Mode).HasSnakeCaseEnum();
+        builder.Property(entity => entity.BillingStatus).HasSnakeCaseEnum();
+        builder.Property(entity => entity.LegacyId).HasMaxLength(64);
+        builder.Property(entity => entity.Metadata).IsJson("{}");
+
+        builder.HasIndex(entity => entity.Slug).IsUnique();
+        builder.HasIndex(entity => entity.LegacyId).IsUnique();
+
+        builder.HasOne<User>()
+            .WithMany()
+            .HasForeignKey(entity => entity.OwnerUserId)
+            .OnDelete(DeleteBehavior.SetNull);
+    }
+}
+
+internal sealed class TenantMembershipConfiguration : IEntityTypeConfiguration<TenantMembership>
+{
+    public void Configure(EntityTypeBuilder<TenantMembership> builder)
+    {
+        builder.ConfigureTenantEntity("tenant_memberships");
+        builder.ConfigureTimestamps();
+
+        builder.Property(entity => entity.Role).HasSnakeCaseEnum();
+        builder.Property(entity => entity.Status).HasSnakeCaseEnum();
+        builder.Property(entity => entity.Permissions).IsJson("{}");
+        builder.Property(entity => entity.LegacyRole).HasMaxLength(50);
+
+        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.Role }).IsUnique();
+
+        builder.HasOne<User>()
+            .WithMany()
+            .HasForeignKey(entity => entity.UserId)
+            .OnDelete(DeleteBehavior.Cascade);
+    }
+}