Adding Flags API

src/api/MicCheck.Api/Features/FlagsController.cs

@@ -0,0 +1,19 @@
+using MicCheck.Api.Authorization;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace MicCheck.Api.Features;
+
+[ApiController]
+[Route("api/v1/flags")]
+[Authorize(Policy = AuthorizationPolicies.FlagsApiAccess)]
+public class FlagsController(FeatureEvaluationService featureEvaluationService) : ControllerBase
+{
+    [HttpGet]
+    public async Task<ActionResult<IReadOnlyList<FlagResponse>>> GetAll(CancellationToken ct)
+    {
+        var environmentId = int.Parse(User.FindFirst("EnvironmentId")!.Value);
+        var results = await featureEvaluationService.EvaluateForEnvironmentAsync(environmentId, ct);
+        return Ok(results.Select(FlagResponse.From).ToList());
+    }
+}