SimplyPrint.Integrations.Core

Shared C# client used by SimplyPrint's desktop CAD add-ins (SolidWorks, Alibre, …). It is the formalisation of the client the Python integrations copy-port (api.py / oauth.py / config.py): OAuth2 PKCE, chunked temp upload, .env configuration, and token / preferences storage under ~/.simplyprint/.

Everything host-specific is injected via IntegrationProfile, so a single build serves every add-in.

What's in here

File	Role
IntegrationProfile.cs	The per-integration identity + SimplyPrintClient.Init(profile) entry point.
Config.cs	.env loader (defaults ← profile, then ~/.simplyprint/.env, <addin>/.env, real env vars).
OAuth.cs	OAuth2 Authorization-Code + PKCE (S256) flow with a loopback TcpListener callback.
ApiClient.cs	GET /account/GetUser, POST /files/TempUpload, chunked POST /files/ChunkReceive, panel import URLs.
Storage.cs	TokenStore (profile-named token file) + PreferenceStore (host-supplied schema).
Http.cs / Json.cs	Process-wide HttpClient (TLS 1.2/1.3) and in-box JSON helpers.

The backend contract is upload-then-hand-off: authenticate → upload the mesh to temp storage → open the browser at https://{domain}/panel?import=tmp:{uuid}. There is no "create print job" API — job creation happens in the web panel.

Using it from an add-in

using SimplyPrint.Integrations.Core;

// Once, at add-in load:
SimplyPrintClient.Init(new IntegrationProfile
{
    DefaultClientId    = "simplyprintalibre",
    DefaultCallbackPort = 21334,
    UserAgent          = "SimplyPrint Alibre Plugin",
    TokenFileName      = "oauth_alibre.json",
    PrefsSubdir        = "alibre",
});

// Log in (background thread; callback marshalled by the caller):
OAuth.StartFlow(result =>
{
    if (result.Success) TokenStore.Save(result.ToTokens());
});

// Upload an exported mesh:
var resp = ApiClient.UploadFile(bytes, "part.stl", TokenStore.Load().AccessToken);
var uuid = Json.GetString(resp, "uuid");
System.Diagnostics.Process.Start(ApiClient.MakeImportUrl(uuid, "part.stl"));

Building

dotnet build -c Release

Targets net48 (referenced fine by net481 add-ins) and uses the Microsoft.NETFramework.ReferenceAssemblies package so it builds on Linux/CI with the dotnet CLI — no Windows Developer Pack required.

Consumed by

• solidworks-integration (SimplyPrintSolidWorks)
• alibre-integration (SimplyPrintAlibre)

Each add-in references this project. Once this repo has a Git remote, wire it into the consumers as a submodule at core/ and point the <ProjectReference> there; until then the consumers reference it by relative path.