memperbaiki cost/benefit

app/Services/ToyRecommendationService.php

@@ -29,7 +29,7 @@ public function getRecommendations(array $input): Collection
 
         $criterias = Criteria::orderBy('weight_order')->get();
         if ($criterias->isEmpty()) {
-            return $products->take(5)->map(fn ($p, $i) => [
+            return $products->take(5)->map(fn($p, $i) => [
                 'rank' => $i + 1,
                 'product' => $p,
                 'score' => 0.0,
@@ -47,7 +47,7 @@ public function getRecommendations(array $input): Collection
 
         return $ranked->map(function ($item, $index) use ($products, $criteriaNames, $priorities) {
             $product = $products->firstWhere('id', $item['product_id']);
-            if (! $product) {
+            if (!$product) {
                 return null;
             }
             $explanation = $this->buildExplanation($product, $item['score'], $priorities, $criteriaNames);
@@ -87,7 +87,7 @@ public function getRecommendationsWithMatrix(array $input): array
 
         $criterias = Criteria::orderBy('weight_order')->get();
         if ($criterias->isEmpty()) {
-            $recommendations = $products->take(5)->map(fn ($p, $i) => [
+            $recommendations = $products->take(5)->map(fn($p, $i) => [
                 'rank' => $i + 1,
                 'product' => $p,
                 'score' => 0.0,
@@ -110,7 +110,7 @@ public function getRecommendationsWithMatrix(array $input): array
         $ranked = $scores->sortByDesc('score')->take(5)->values();
         $topProductIds = $ranked->pluck('product_id')->all();
         $rankedScoresByProductId = $ranked
-            ->mapWithKeys(fn ($item) => [$item['product_id'] => round($item['score'], 4)])
+            ->mapWithKeys(fn($item) => [$item['product_id'] => round($item['score'], 4)])
             ->all();
 
         $criteriasWithWeight = [];
@@ -125,7 +125,7 @@ public function getRecommendationsWithMatrix(array $input): array
         $decisionMatrix = [];
         foreach ($topProductIds as $productId) {
             $row = $matrix[$productId] ?? null;
-            if (! $row) {
+            if (!$row) {
                 continue;
             }
             $product = $products->firstWhere('id', $productId);
@@ -139,7 +139,7 @@ public function getRecommendationsWithMatrix(array $input): array
         $normalizedMatrix = [];
         foreach ($topProductIds as $productId) {
             $row = $normalized[$productId] ?? null;
-            if (! $row) {
+            if (!$row) {
                 continue;
             }
             $product = $products->firstWhere('id', $productId);
@@ -156,7 +156,7 @@ public function getRecommendationsWithMatrix(array $input): array
         $criteriaNames = $criterias->keyBy('id')->map->name;
         $recommendations = $ranked->map(function ($item, $index) use ($products, $criteriaNames, $priorities) {
             $product = $products->firstWhere('id', $item['product_id']);
-            if (! $product) {
+            if (!$product) {
                 return null;
             }
             $explanation = $this->buildExplanation($product, $item['score'], $priorities, $criteriaNames);
@@ -205,23 +205,33 @@ protected function ageRangeOverlaps(string $ageRange, int $childMin, int $childM
 
     protected function buildWeightsFromPriorities(array $priorities, Collection $criterias): array
     {
-        // priorities: [criteria_id => 1..5]
-        // return weights by criteria name: ['Harga' => 0.2, 'Kualitas' => 0.2, ...]
         $raw = [];
         $sum = 0.0;
 
         foreach ($criterias as $c) {
-            $w = (float) ($priorities[(string) $c->id] ?? $priorities[$c->id] ?? 1);
-            if ($w < 1) $w = 1;
-            if ($w > 5) $w = 5;
+
+            $input = (int) ($priorities[(string) $c->id] ?? $priorities[$c->id] ?? 3);
+
+            if ($input < 1)
+                $input = 1;
+            if ($input > 5)
+                $input = 5;
+
+            // Jika Cost, dibalik
+            if ($c->type === 'cost') {
+                $w = 6 - $input;
+            } else {
+                $w = $input;
+            }
+
             $raw[$c->name] = $w;
             $sum += $w;
         }
 
-        $count = max(1, $criterias->count());
         $weights = [];
-        foreach ($raw as $name => $v) {
-            $weights[$name] = $sum > 0 ? $v / $sum : 1 / $count;
+
+        foreach ($raw as $name => $value) {
+            $weights[$name] = $value / $sum;
         }
 
         return $weights;
@@ -240,7 +250,7 @@ protected function buildMatrix(Collection $products, Collection $criterias): arr
                 }
             }
             foreach ($criterias as $c) {
-                if (! isset($row[$c->name])) {
+                if (!isset($row[$c->name])) {
                     $row[$c->name] = $c->name === 'Harga' ? (float) $product->price : 0;
                 }
             }

database/migrations/2026_05_31_231107_change_image.php

@@ -0,0 +1,25 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->longBlob('image_blob')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        //
+    }
+};

database/migrations/2026_05_31_231706_add_image_blob_to_products_table.php

@@ -0,0 +1,21 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    public function up(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->binary('image_blob')->nullable()->after('image');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->dropColumn('image_blob');
+        });
+    }
+};