feat: stats

app/Http/Controllers/MealPostController.php

@@ -3,12 +3,16 @@
 namespace App\Http\Controllers;
 
 use App\Http\Requests\MealPostsRequest;
+use App\Http\Requests\MealPostStatsRequest;
 use App\Http\Resources\MealPostsResource;
 use App\Models\MealPosts;
+use Carbon\CarbonImmutable;
+use Carbon\CarbonInterface;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
 use Illuminate\Http\Response;
+use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\Storage;
 
 class MealPostController extends Controller
@@ -27,6 +31,40 @@ class MealPostController extends Controller
         return MealPostsResource::collection($mealPosts);
     }
 
+    public function stats(MealPostStatsRequest $request): JsonResponse
+    {
+        $validated = $request->validated();
+        $period = $validated['period'] ?? 'day';
+        $referenceDate = CarbonImmutable::createFromFormat('!Y-m-d', $validated['date'] ?? now()->toDateString());
+
+        [$startDate, $endDate] = match ($period) {
+            'week' => [
+                $referenceDate->startOfWeek(CarbonInterface::MONDAY),
+                $referenceDate->endOfWeek(CarbonInterface::SUNDAY),
+            ],
+            default => [
+                $referenceDate->startOfDay(),
+                $referenceDate->endOfDay(),
+            ],
+        };
+
+        $mealPosts = MealPosts::query()
+            ->where('user_id', $request->user()->getKey())
+            ->whereBetween('eaten_at', [$startDate, $endDate])
+            ->get(['calories', 'proteins', 'carbs', 'fats', 'eaten_at']);
+
+        return response()->json([
+            'data' => [
+                'period' => $period,
+                'date' => $referenceDate->toDateString(),
+                'startDate' => $startDate->toDateString(),
+                'endDate' => $endDate->toDateString(),
+                'totals' => $this->getNutritionTotals($mealPosts),
+                'days' => $this->getDailyNutritionTotals($mealPosts, $startDate, $endDate),
+            ],
+        ]);
+    }
+
     public function store(MealPostsRequest $request): JsonResponse
     {
         $mealPost = MealPosts::create([
@@ -85,4 +123,34 @@ class MealPostController extends Controller
 
         return $data;
     }
+
+    private function getDailyNutritionTotals(Collection $mealPosts, CarbonImmutable $startDate, CarbonImmutable $endDate): array
+    {
+        $days = [];
+
+        for ($date = $startDate; $date->lte($endDate); $date = $date->addDay()) {
+            $day = $date->toDateString();
+            $dayMealPosts = $mealPosts->filter(
+                fn (MealPosts $mealPost): bool => $mealPost->eaten_at->toDateString() === $day
+            );
+
+            $days[] = [
+                'date' => $day,
+                'totals' => $this->getNutritionTotals($dayMealPosts),
+            ];
+        }
+
+        return $days;
+    }
+
+    private function getNutritionTotals(Collection $mealPosts): array
+    {
+        return [
+            'calories' => (int) $mealPosts->sum(fn (MealPosts $mealPost): int => (int) ($mealPost->calories ?? 0)),
+            'proteins' => round((float) $mealPosts->sum(fn (MealPosts $mealPost): float => (float) ($mealPost->proteins ?? 0)), 2),
+            'carbs' => round((float) $mealPosts->sum(fn (MealPosts $mealPost): float => (float) ($mealPost->carbs ?? 0)), 2),
+            'fats' => round((float) $mealPosts->sum(fn (MealPosts $mealPost): float => (float) ($mealPost->fats ?? 0)), 2),
+            'mealsCount' => $mealPosts->count(),
+        ];
+    }
 }