* Added recalculation

MealPlan.Api/Controllers/RecipeManagementController.cs

@@ -13,13 +13,16 @@ public class RecipeManagementController : ControllerBase
 {
     private readonly IRecipeManagementService _managementService;
     private readonly IRecipeExcelService _excelService;
+    private readonly IRecipeCalorieRecalculationService _calorieRecalculation;
 
     public RecipeManagementController(
         IRecipeManagementService managementService,
-        IRecipeExcelService excelService)
+        IRecipeExcelService excelService,
+        IRecipeCalorieRecalculationService calorieRecalculation)
     {
         _managementService = managementService;
         _excelService = excelService;
+        _calorieRecalculation = calorieRecalculation;
     }
 
     /// <summary>Creates a new recipe with ingredients and steps.</summary>
@@ -90,4 +93,26 @@ public class RecipeManagementController : ControllerBase
         var result = await _managementService.RecalculateAllMacrosFromCatalogAsync(ct);
         return Ok(result);
     }
+
+    /// <summary>Scales or AI-adjusts ingredient amounts to match a calorie target.</summary>
+    [HttpPost("{id:int}/recalculate-calories")]
+    [ProducesResponseType(typeof(RecalculateRecipeCaloriesResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> RecalculateCalories(
+        int id,
+        [FromBody] RecalculateRecipeCaloriesRequestDto request,
+        CancellationToken ct)
+    {
+        try
+        {
+            var result = await _calorieRecalculation.RecalculateAsync(id, request, ct);
+            return result is null
+                ? NotFound(new { error = $"Recipe {id} was not found." })
+                : Ok(result);
+        }
+        catch (InvalidOperationException ex)
+        {
+            return BadRequest(new { error = ex.Message });
+        }
+    }
 }

MealPlan.Api/Program.cs

@@ -69,6 +69,7 @@ builder.Services.AddScoped<ITokenService, TokenService>();
 builder.Services.AddScoped<IAuthService, AuthService>();
 builder.Services.AddScoped<IRecipeService, RecipeService>();
 builder.Services.AddScoped<IRecipeManagementService, RecipeManagementService>();
+builder.Services.AddScoped<IRecipeCalorieRecalculationService, RecipeCalorieRecalculationService>();
 builder.Services.AddScoped<IRecipeExcelService, RecipeExcelService>();
 builder.Services.AddScoped<IDietTrackingService, DietTrackingService>();
 builder.Services.AddScoped<IIngredientCatalogService, IngredientCatalogService>();