From 30b49ca19b8625e70104ce27f977d3cb9a603afd Mon Sep 17 00:00:00 2001
From: Danijel Martinek <danijel@fraqtal.xyz>
Date: Tue, 5 May 2026 07:58:20 +0200
Subject: [PATCH] feat(auth): add tRPC router with signIn + signUp + signOut

---
 .../auth/src/integrations/api/router.test.ts  | 43 +++++++++++++++++++
 packages/auth/src/integrations/api/router.ts  | 32 ++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 packages/auth/src/integrations/api/router.test.ts
 create mode 100644 packages/auth/src/integrations/api/router.ts

diff --git a/packages/auth/src/integrations/api/router.test.ts b/packages/auth/src/integrations/api/router.test.ts
new file mode 100644
index 0000000..c230916
--- /dev/null
+++ b/packages/auth/src/integrations/api/router.test.ts
@@ -0,0 +1,43 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { authContainer } from "@/di/container";
+import { AUTH_SYMBOLS } from "@/di/symbols";
+import { MockUsersRepository } from "@/infrastructure/repositories/mock-users.repository";
+import { MockAuthenticationService } from "@/infrastructure/services/mock-authentication.service";
+import type { IUsersRepository } from "@/application/repositories/users-repository.interface";
+import type { IAuthenticationService } from "@/application/services/authentication-service.interface";
+import { authRouter } from "./router";
+
+describe("authRouter", () => {
+  beforeEach(() => {
+    if (authContainer.isBound(AUTH_SYMBOLS.IUsersRepository)) {
+      authContainer.unbind(AUTH_SYMBOLS.IUsersRepository);
+    }
+    if (authContainer.isBound(AUTH_SYMBOLS.IAuthenticationService)) {
+      authContainer.unbind(AUTH_SYMBOLS.IAuthenticationService);
+    }
+    const usersRepo = new MockUsersRepository();
+    const authService = new MockAuthenticationService(usersRepo);
+    authContainer
+      .bind<IUsersRepository>(AUTH_SYMBOLS.IUsersRepository)
+      .toConstantValue(usersRepo);
+    authContainer
+      .bind<IAuthenticationService>(AUTH_SYMBOLS.IAuthenticationService)
+      .toConstantValue(authService);
+  });
+
+  it("exposes signIn, signUp, signOut procedures", () => {
+    const names = Object.keys(authRouter._def.procedures);
+    expect(names).toContain("signIn");
+    expect(names).toContain("signUp");
+    expect(names).toContain("signOut");
+  });
+
+  it("signIn returns a cookie", async () => {
+    const caller = authRouter.createCaller({});
+    const result = await caller.signIn({
+      username: "alice",
+      password: "password_alice",
+    });
+    expect(result.name).toBe("session");
+  });
+});
diff --git a/packages/auth/src/integrations/api/router.ts b/packages/auth/src/integrations/api/router.ts
new file mode 100644
index 0000000..1c36a04
--- /dev/null
+++ b/packages/auth/src/integrations/api/router.ts
@@ -0,0 +1,32 @@
+import { z } from "zod";
+import { router, publicProcedure } from "@repo/core-shared/trpc/init";
+import { signInController } from "../../interface-adapters/controllers/sign-in.controller";
+import { signUpController } from "../../interface-adapters/controllers/sign-up.controller";
+import { signOutController } from "../../interface-adapters/controllers/sign-out.controller";
+
+export const authRouter = router({
+  signIn: publicProcedure
+    .input(
+      z.object({
+        username: z.string().min(3).max(31),
+        password: z.string().min(6).max(255),
+      }),
+    )
+    .mutation(({ input }) => signInController(input)),
+
+  signUp: publicProcedure
+    .input(
+      z.object({
+        username: z.string().min(3).max(31),
+        password: z.string().min(6).max(255),
+        confirmPassword: z.string().min(6).max(255),
+      }),
+    )
+    .mutation(({ input }) => signUpController(input)),
+
+  signOut: publicProcedure
+    .input(z.object({ sessionId: z.string() }))
+    .mutation(({ input }) => signOutController(input.sessionId)),
+});
+
+export type AuthRouter = typeof authRouter;