feat: dynamic category in AI chat + keywords support in controller

Author: dhabyap

app/Http/Controllers/Api/CategoryController.php

@@ -22,6 +22,7 @@ public function index(Request $request): JsonResponse
                 'name' => $cat->name,
                 'icon' => $cat->icon ?? '📌',
                 'type' => $cat->type,
+                'keywords' => $cat->keywords ?? [],
             ]);
 
         return $this->successResponse($categories, 'Daftar kategori berhasil diambil');
@@ -33,6 +34,8 @@ public function store(Request $request): JsonResponse
             'name' => 'required|string|max:50|unique:categories,name',
             'icon' => 'required|string|max:4',
             'type' => 'required|in:income,expense,both',
+            'keywords' => 'nullable|array',
+            'keywords.*' => 'string|max:50',
         ]);
 
         $category = Category::create($validated);
@@ -42,6 +45,7 @@ public function store(Request $request): JsonResponse
             'name' => $category->name,
             'icon' => $category->icon,
             'type' => $category->type,
+            'keywords' => $category->keywords ?? [],
         ], 'Kategori berhasil ditambahkan', 201);
     }
 
@@ -56,6 +60,8 @@ public function update(Request $request, int $id): JsonResponse
             'name' => 'sometimes|required|string|max:50|unique:categories,name,' . $id,
             'icon' => 'sometimes|required|string|max:4',
             'type' => 'sometimes|required|in:income,expense,both',
+            'keywords' => 'nullable|array',
+            'keywords.*' => 'string|max:50',
         ]);
 
         $category->update($validated);
@@ -65,6 +71,7 @@ public function update(Request $request, int $id): JsonResponse
             'name' => $category->name,
             'icon' => $category->icon,
             'type' => $category->type,
+            'keywords' => $category->keywords ?? [],
         ], 'Kategori berhasil diperbarui');
     }
 

app/Services/AiTransactionParserService.php

@@ -202,14 +202,20 @@ private function nullableString(mixed $value): ?string
 
     private function systemPrompt(): string
     {
-        return <<<'PROMPT'
+        $categories = Category::query()
+            ->orderBy('name')
+            ->get()
+            ->map(fn (Category $cat) => $cat->name)
+            ->implode(', ');
+
+        return <<<PROMPT
 Extract one Indonesian finance transaction from the user message.
 Return only valid JSON with keys: response, description, amount, category, type.
 amount must be an integer rupiah value or null.
 type must be "expense", "income", or null.
 Use "income" if the message contains: dapat, dapet, dpt, gaji, bonus, dibayar, transfer masuk, pendapatan, fee.
 Use "expense" if the message contains: beli, bayar, belanja, isi, sewa, tagihan, potong, hutang.
-category should be one of: MAKANAN, TRANSPORT, BELANJA, TAGIHAN, HIBURAN, GAJI, LAINNYA.
+category should be one of: {$categories}.
 If the message has no amount, set description, amount, category, and type to null.
 PROMPT;
     }