feat: save ai usage

app/Http/Controllers/MealImageAnalysisController.php

@@ -3,38 +3,66 @@
 namespace App\Http\Controllers;
 
 use App\Ai\Agents\MealImageAnalyzer;
+use App\Enums\AiUsageType;
 use App\Enums\IngredientUnit;
 use App\Enums\MealPostType;
 use App\Http\Requests\MealImageAnalysisRequest;
+use App\Services\AiUsageRecorder;
 use Illuminate\Contracts\Support\Arrayable;
 use Illuminate\Http\JsonResponse;
+use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Str;
+use Laravel\Ai\Responses\Data\Usage;
 use Throwable;
 
 class MealImageAnalysisController extends Controller
 {
-    public function store(MealImageAnalysisRequest $request): JsonResponse
+    public function store(MealImageAnalysisRequest $request, AiUsageRecorder $aiUsageRecorder): JsonResponse
     {
+        $image = $request->file('image');
+        $input = $this->analysisInput($image);
+
         try {
             $response = MealImageAnalyzer::make()->prompt(
                 $this->prompt(),
-                [$request->file('image')],
+                [$image],
                 timeout: 90,
             );
         } catch (Throwable $exception) {
             report($exception);
 
+            $aiUsageRecorder->failed(
+                user: $request->user(),
+                type: AiUsageType::MEAL_IMAGE_ANALYSIS,
+                exception: $exception,
+                input: $input,
+            );
+
             return response()->json([
                 'message' => __('api.meal_image_analysis.failed'),
             ], 502);
         }
 
+        $draft = $this->normalizeDraft(
+            $response instanceof Arrayable
+                ? $response->toArray()
+                : (json_decode($response->text, true) ?: [])
+        );
+
+        $aiUsageRecorder->success(
+            user: $request->user(),
+            type: AiUsageType::MEAL_IMAGE_ANALYSIS,
+            input: $input,
+            output: $draft,
+            provider: $response->meta->provider ?? null,
+            model: $response->meta->model ?? null,
+            promptTokens: $response->usage->promptTokens ?? null,
+            completionTokens: $response->usage->completionTokens ?? null,
+            totalTokens: $this->totalTokens($response->usage ?? null),
+        );
+
         return response()->json([
-            'data' => $this->normalizeDraft(
-                $response instanceof Arrayable
-                    ? $response->toArray()
-                    : (json_decode($response->text, true) ?: [])
-            ),
+            'data' => $draft,
         ]);
     }
 
@@ -51,6 +79,26 @@ Contraintes:
 PROMPT;
     }
 
+    private function analysisInput(UploadedFile $image): array
+    {
+        return [
+            'image' => [
+                'client_original_name' => $image->getClientOriginalName(),
+                'mime_type' => $image->getMimeType(),
+                'size' => $image->getSize(),
+            ],
+        ];
+    }
+
+    private function totalTokens(?Usage $usage): ?int
+    {
+        if (! $usage) {
+            return null;
+        }
+
+        return $usage->promptTokens + $usage->completionTokens;
+    }
+
     private function normalizeDraft(array $draft): array
     {
         $type = MealPostType::tryFrom($this->cleanString($draft['type'] ?? '', 32))