Added contract entity

PostFundManagement.Domain/Configuration/Contract.cs

@@ -0,0 +1,34 @@
+namespace PostFundManagement.Domain.Configuration;
+
+public sealed class Contract : IEntityTypeConfiguration<Entities.Contract>
+{
+    public void Configure(EntityTypeBuilder<Entities.Contract> builder)
+    {
+        builder.ToTable(nameof(Entities.Contract).Pluralize());
+
+        builder.HasKey(pk => pk.Id);
+        builder.HasIndex(f => f.AwardId).IsUnique();
+
+        builder.Property(f => f.AwardId).IsRequired();
+        builder.Property(f => f.CreatedBy).IsRequired();
+        builder.Property(f => f.CreatedAt).IsRequired().HasDefaultValueSql("now()");
+        builder.Property(f => f.ExternalSignatureId).IsRequired(false);
+        builder.Property(f => f.SignedDocumentUrl).IsRequired(false);
+        builder.Property(f => f.EffectiveAt).IsRequired(false);
+        builder.Property(f => f.ExpiresAt).IsRequired(false);
+        builder.Property(f => f.TotalValue).IsRequired().HasPrecision(18, 2);
+        builder.Property(f => f.Status).IsRequired().HasDefaultValue(ContractStatus.Draft);
+
+        builder.HasOne(f => f.Award)
+            .WithOne(f => f.Contract)
+            .HasForeignKey<Entities.Contract>(fk => fk.AwardId)
+            .IsRequired()
+            .OnDelete(DeleteBehavior.Restrict);
+
+        builder.HasOne(f => f.Creator)
+            .WithMany()
+            .HasForeignKey(fk => fk.CreatedBy)
+            .IsRequired()
+            .OnDelete(DeleteBehavior.NoAction);
+    }
+}

PostFundManagement.Domain/Entities/Award.cs

@@ -14,4 +14,6 @@ public class Award : Models.Award
     public virtual Programme? Programme { get; set; }
 
     public virtual Project? Project { get; set; }
+
+    public virtual Contract? Contract { get; set; }
 }

PostFundManagement.Domain/Entities/Contract.cs

@@ -0,0 +1,8 @@
+namespace PostFundManagement.Domain.Entities;
+
+public class Contract : Models.Contract
+{
+    public virtual Award? Award { get; set; }
+
+    public virtual User? Creator { get; set; }
+}

PostFundManagement.Infrastructure/Database/ApplicationDbContext.cs

@@ -4,6 +4,8 @@ namespace PostFundManagement.Infrastructure.Database;
 
 public sealed class ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : DbContext(options)
 {
+    public DbSet<Contract> Contracts => Set<Contract>();
+
     public DbSet<Award> Awards => Set<Award>();
 
     public DbSet<Project> Projects => Set<Project>();