first commit

Controllers/ImageController.cs

@@ -0,0 +1,50 @@
+using Microsoft.AspNetCore.Mvc;
+using StitcherApi.Models;
+using StitcherApi.Services;
+
+namespace StitcherApi.Controllers;
+
+public static class ImageController
+{
+    public static void MapImageEndpoints(this IEndpointRouteBuilder app)
+    {
+        var group = app.MapGroup("/api/image");
+
+        group.MapPost(
+            "/generate",
+            async (
+                [FromBody] GenerateImageRequest request,
+                [FromServices] IImageService imageService
+            ) =>
+            {
+                try
+                {
+                    var imageBytes = await imageService.GenerateImageAsync(request);
+                    return Results.File(imageBytes, "image/png");
+                }
+                catch (FileNotFoundException ex)
+                {
+                    return Results.Problem(
+                        detail: ex.Message,
+                        statusCode: StatusCodes.Status404NotFound
+                    );
+                }
+                catch (ArgumentException ex)
+                {
+                    return Results.Problem(
+                        detail: ex.Message,
+                        statusCode: StatusCodes.Status400BadRequest
+                    );
+                }
+                catch (Exception)
+                {
+                    // In a real app, log the exception here.
+                    return Results.Problem(
+                        detail: "An internal error occurred.",
+                        statusCode: StatusCodes.Status500InternalServerError
+                    );
+                }
+            }
+        );
+    }
+}