chore: init project

src/InboxIntel.Api/Controllers/AuthController.cs

@@ -0,0 +1,39 @@
+using System.Security.Claims;
+using Asp.Versioning;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authentication.Cookies;
+using Microsoft.AspNetCore.Authentication.Google;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace InboxIntel.Api.Controllers;
+
+[ApiController]
+[ApiVersion("1.0")]
+[Route("api/v{version:apiVersion}/[controller]")]
+public class AuthController : ControllerBase
+{
+    /// <summary>Begins the Google OAuth2 login flow.</summary>
+    [HttpGet("login")]
+    [AllowAnonymous]
+    public IActionResult Login([FromQuery] string? returnUrl = "/")
+        => Challenge(new AuthenticationProperties { RedirectUri = returnUrl }, GoogleDefaults.AuthenticationScheme);
+
+    [HttpPost("logout")]
+    [Authorize]
+    public async Task<IActionResult> Logout()
+    {
+        await HttpContext.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
+        return NoContent();
+    }
+
+    /// <summary>Returns the currently signed-in user, or 401.</summary>
+    [HttpGet("me")]
+    [Authorize]
+    public IActionResult Me() => Ok(new
+    {
+        UserId = User.FindFirstValue("inboxintel:uid"),
+        Email = User.FindFirstValue(ClaimTypes.Email),
+        Name = User.FindFirstValue(ClaimTypes.Name)
+    });
+}