From 84de905469784b73bc2c64ccb1b750d0412a8ff0 Mon Sep 17 00:00:00 2001
From: Gulum <gulum@rismer.de>
Date: Fri, 5 Jun 2026 23:36:06 +0200
Subject: [PATCH] ARCH-2: wire PostgreSQL through Aspire

- AppHost: AddPostgres(postgres).WithDataVolume() + AddDatabase(gerbilmanager),
  WebAPI project resource WithReference/WaitFor on the db (Aspire-generated credentials)
- WebAPI: AddNpgsqlDbContext<ApplicationContext>(gerbilmanager) replaces manual
  AddDbContext/UseNpgsql + appsettings connection string

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 GerbilManager.AppHost/AppHost.cs                  | 15 ++++++++++++---
 .../GerbilManager.AppHost.csproj                  |  8 ++++++++
 GerbilManagerWebAPI/GerbilManagerWebAPI.csproj    |  1 +
 GerbilManagerWebAPI/Program.cs                    |  2 +-
 4 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/GerbilManager.AppHost/AppHost.cs b/GerbilManager.AppHost/AppHost.cs
index 97422e2..3f842d4 100644
--- a/GerbilManager.AppHost/AppHost.cs
+++ b/GerbilManager.AppHost/AppHost.cs
@@ -1,3 +1,12 @@
-var builder = DistributedApplication.CreateBuilder(args);
-
-builder.Build().Run();
+var builder = DistributedApplication.CreateBuilder(args);
+
+var postgres = builder.AddPostgres("postgres")
+    .WithDataVolume();
+
+var gerbilDb = postgres.AddDatabase("gerbilmanager");
+
+builder.AddProject<Projects.GerbilManagerWebAPI>("webapi")
+    .WithReference(gerbilDb)
+    .WaitFor(gerbilDb);
+
+builder.Build().Run();
diff --git a/GerbilManager.AppHost/GerbilManager.AppHost.csproj b/GerbilManager.AppHost/GerbilManager.AppHost.csproj
index 9300699..475f60d 100644
--- a/GerbilManager.AppHost/GerbilManager.AppHost.csproj
+++ b/GerbilManager.AppHost/GerbilManager.AppHost.csproj
@@ -8,4 +8,12 @@
     <UserSecretsId>b153f50c-bec1-401e-9893-f9df7cff2ebd</UserSecretsId>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Aspire.Hosting.PostgreSQL" Version="13.4.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GerbilManagerWebAPI\GerbilManagerWebAPI.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/GerbilManagerWebAPI/GerbilManagerWebAPI.csproj b/GerbilManagerWebAPI/GerbilManagerWebAPI.csproj
index 7897860..6c68de5 100644
--- a/GerbilManagerWebAPI/GerbilManagerWebAPI.csproj
+++ b/GerbilManagerWebAPI/GerbilManagerWebAPI.csproj
@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Aspire.Npgsql.EntityFrameworkCore.PostgreSQL" Version="13.4.2" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.8" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.8" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.8">
diff --git a/GerbilManagerWebAPI/Program.cs b/GerbilManagerWebAPI/Program.cs
index 2e5a64d..e04a6fc 100644
--- a/GerbilManagerWebAPI/Program.cs
+++ b/GerbilManagerWebAPI/Program.cs
@@ -11,7 +11,7 @@ builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
-builder.Services.AddDbContext<ApplicationContext>(opts => opts.UseNpgsql(builder.Configuration.GetConnectionString("gerbilmanager")));
+builder.AddNpgsqlDbContext<ApplicationContext>("gerbilmanager");
 builder.Services.AddScoped<UnitOfWork>();
 
 var app = builder.Build();