Added instrastructure extensions

Implemented database service registration

PostFundManagement.Infrastructure/Database/ApplicationDbContextFactory.cs

@@ -1,3 +1,5 @@
+using static PostFundManagement.Infrastructure.Extensions.Constants;
+
 namespace PostFundManagement.Infrastructure.Database;
 
 public sealed class ApplicationDbContextFactory : IDesignTimeDbContextFactory<ApplicationDbContext>
@@ -12,8 +14,8 @@ public sealed class ApplicationDbContextFactory : IDesignTimeDbContextFactory<Ap
 
         var optionsBuilder = new DbContextOptionsBuilder<ApplicationDbContext>();
 
-        var connectionString = configuration.GetConnectionString("PfmDatabase") 
-            ?? throw new InvalidOperationException("Connection string 'PfmDatabase' was not found in configuration.");
+        var connectionString = configuration.GetConnectionString(DatabaseConfigName) 
+            ?? throw new InvalidOperationException($"Connection string '{DatabaseConfigName}' was not found in configuration.");
         
         optionsBuilder.UseNpgsql(connectionString, npgsqlOptions => npgsqlOptions.MigrationsAssembly(typeof(ApplicationDbContext).Assembly.FullName));
 

PostFundManagement.Infrastructure/Extensions/Constants.cs

@@ -0,0 +1,6 @@
+namespace PostFundManagement.Infrastructure.Extensions;
+
+public static class Constants
+{
+    public const string DatabaseConfigName = "PfmDatabase";
+}

PostFundManagement.Infrastructure/Extensions/Postgres.cs

@@ -0,0 +1,17 @@
+using PostFundManagement.Infrastructure.Database;
+using static PostFundManagement.Infrastructure.Extensions.Constants;
+
+namespace PostFundManagement.Infrastructure.Extensions;
+
+public static class Postgres
+{
+    public static IServiceCollection AddApplicationDbContext(this IServiceCollection services, IConfiguration configuration)
+    {
+        var connectionString = configuration.GetConnectionString(DatabaseConfigName)
+            ?? throw new InvalidOperationException($"Connection string '{DatabaseConfigName}' was not found in configuration.");
+
+        services.AddPooledDbContextFactory<ApplicationDbContext>(builder => builder.UseNpgsql(connectionString));
+
+        return services;
+    }
+}

PostFundManagement.Infrastructure/PostFundManagement.Infrastructure.csproj

@@ -27,13 +27,14 @@
     <Using Include="Microsoft.EntityFrameworkCore.Design" />
   </ItemGroup>
 
-  <!-- Configuration -->
+  <!-- Extensions -->
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.11" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="10.0.11" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="10.0.11" />
 
     <Using Include="Microsoft.Extensions.Configuration" />
+    <Using Include="Microsoft.Extensions.DependencyInjection" />
   </ItemGroup>
 
   <ItemGroup>