Initial commit

MealPlan.Api/Services/IAuthService.cs

@@ -0,0 +1,18 @@
+using MealPlan.Api.DTOs.Auth;
+
+namespace MealPlan.Api.Services;
+
+public interface IAuthService
+{
+    Task<AuthResult> RegisterAsync(RegisterRequestDto request, CancellationToken ct = default);
+
+    Task<AuthResult> LoginAsync(LoginRequestDto request, CancellationToken ct = default);
+
+    /// <summary>Validates and rotates a refresh token, issuing a fresh token pair.</summary>
+    Task<AuthResult> RefreshAsync(string refreshToken, CancellationToken ct = default);
+
+    /// <summary>Revokes the supplied refresh token. Idempotent.</summary>
+    void Logout(string refreshToken);
+
+    Task<UserInfoDto?> GetUserInfoAsync(string userId, CancellationToken ct = default);
+}