Added base model, client model, entity configuration files.

src/dotnet/HQ.Server/Data/Configuration/BaseConfiguration.cs

@@ -0,0 +1,13 @@
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Microsoft.EntityFrameworkCore;
+using HQ.Server.Data.Models;
+
+namespace HQ.Server.Data.Configuration;
+
+public abstract class BaseConfiguration<T> : IEntityTypeConfiguration<T> where T : Base
+{
+    public virtual void Configure(EntityTypeBuilder<T> builder)
+    {
+        builder.HasKey(t => t.Id);
+    }
+}

src/dotnet/HQ.Server/Data/Configuration/ClientConfiguration.cs

@@ -0,0 +1,18 @@
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Microsoft.EntityFrameworkCore;
+using HQ.Server.Data.Models;
+
+namespace HQ.Server.Data.Configuration;
+
+public class ClientConfiguration : BaseConfiguration<Client>
+{
+    public override void Configure(EntityTypeBuilder<Client> builder)
+    {
+        base.Configure(builder);
+
+        builder.ToTable("clients");
+
+        builder.HasIndex(t => t.Name)
+            .IsUnique();
+    }
+}

src/dotnet/HQ.Server/Data/HQDbContext.cs

@@ -1,10 +1,13 @@
-using Microsoft.EntityFrameworkCore;
+using HQ.Server.Data.Models;
+using Microsoft.EntityFrameworkCore;
 using System.Reflection;
 
 namespace HQ.Server.Data
 {
     public class HQDbContext : DbContext
     {
+        public DbSet<Client> Clients { get; set; } = null!;
+
         public HQDbContext(DbContextOptions<HQDbContext> options)
             : base(options)
         {

src/dotnet/HQ.Server/Data/Migrations/20240410034318_AddedClients.cs

@@ -0,0 +1,45 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace HQ.Server.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddedClients : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "clients",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    name = table.Column<string>(type: "text", nullable: false),
+                    official_name = table.Column<string>(type: "text", nullable: true),
+                    billing_email = table.Column<string>(type: "text", nullable: true),
+                    hourly_rate = table.Column<decimal>(type: "numeric", nullable: true),
+                    created_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    updated_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_clients", x => x.id);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "ix_clients_name",
+                table: "clients",
+                column: "name",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "clients");
+        }
+    }
+}

src/dotnet/HQ.Server/Data/Migrations/HQDbContextModelSnapshot.cs

@@ -1,4 +1,5 @@
 // <auto-generated />
+using System;
 using HQ.Server.Data;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
@@ -20,6 +21,48 @@ protected override void BuildModel(ModelBuilder modelBuilder)
                 .HasAnnotation("Relational:MaxIdentifierLength", 63);
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("HQ.Server.Data.Models.Client", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<string>("BillingEmail")
+                        .HasColumnType("text")
+                        .HasColumnName("billing_email");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("created_at");
+
+                    b.Property<decimal?>("HourlyRate")
+                        .HasColumnType("numeric")
+                        .HasColumnName("hourly_rate");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<string>("OfficialName")
+                        .HasColumnType("text")
+                        .HasColumnName("official_name");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("updated_at");
+
+                    b.HasKey("Id")
+                        .HasName("pk_clients");
+
+                    b.HasIndex("Name")
+                        .IsUnique()
+                        .HasDatabaseName("ix_clients_name");
+
+                    b.ToTable("clients", (string)null);
+                });
 #pragma warning restore 612, 618
         }
     }

src/dotnet/HQ.Server/Data/Models/Base.cs

@@ -0,0 +1,8 @@
+namespace HQ.Server.Data.Models;
+
+public abstract class Base
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime? UpdatedAt { get; set; }
+}

src/dotnet/HQ.Server/Data/Models/Client.cs

@@ -0,0 +1,9 @@
+namespace HQ.Server.Data.Models;
+
+public class Client : Base
+{
+    public string Name { get; set; } = null!;
+    public string? OfficialName { get; set; }
+    public string? BillingEmail { get; set; }
+    public decimal? HourlyRate { get; set; }
+}