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namespace App\Http\Controllers;
use App\Models\ChatMessage;
use App\Services\OpenAiChatService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
class ChatController extends Controller
{
public function index(Request $request): View
{
$conversation = $request->user()
->chatConversations()
->with('messages')
->latest()
->first();
if (! $conversation) {
$conversation = $request->user()->chatConversations()->create([
'title' => 'Chat AI',
]);
$conversation->load('messages');
}
return view('chat.index', [
'conversation' => $conversation,
]);
}
public function store(Request $request, OpenAiChatService $openai): RedirectResponse
{
$data = $request->validate([
'prompt' => ['required', 'string', 'max:1000'],
]);
$dailyLimit = max(5, (int) config('services.openai.daily_message_limit', 40));
$todayCount = ChatMessage::query()
->where('role', 'user')
->whereDate('created_at', now()->toDateString())
->whereHas('conversation', fn ($q) => $q->where('user_id', $request->user()->id))
->count();
if ($todayCount >= $dailyLimit) {
return redirect()
->route('chat.index')
->with('chat_error', "Batas harian chat ({$dailyLimit}) sudah tercapai. Coba lagi besok atau minta limit dinaikkan.");
}
$conversation = $request->user()
->chatConversations()
->latest()
->first();
if (! $conversation) {
$conversation = $request->user()->chatConversations()->create([
'title' => 'Chat AI',
]);
}
$conversation->messages()->create([
'role' => 'user',
'content' => $data['prompt'],
]);
$historyLimit = max(2, (int) config('services.openai.history_limit', 10));
$messages = $conversation->messages()
->latest('id')
->limit($historyLimit)
->get(['role', 'content'])
->reverse()
->map(fn ($message) => [
'role' => $message->role,
'content' => $message->content,
])
->values()
->all();
$systemPrompt = config('services.openai.system_prompt');
$languageGuard = 'Aturan wajib: selalu jawab dalam Bahasa Indonesia. Gunakan Bahasa Inggris hanya jika pengguna secara eksplisit memintanya.';
$finalSystemPrompt = trim((string) $systemPrompt);
if ($finalSystemPrompt !== '') {
$finalSystemPrompt .= "\n\n".$languageGuard;
} else {
$finalSystemPrompt = $languageGuard;
}
array_unshift($messages, [
'role' => 'system',
'content' => $finalSystemPrompt,
]);
try {
$reply = $openai->reply($messages);
} catch (\Throwable $e) {
$conversation->messages()->create([
'role' => 'assistant',
'content' => 'Maaf, AI belum bisa merespons sekarang. Cek konfigurasi OPENAI_API_KEY dan model OpenAI kamu.',
]);
return redirect()
->route('chat.index')
->with('chat_error', $e->getMessage());
}
$conversation->messages()->create([
'role' => 'assistant',
'content' => $reply,
]);
return redirect()->route('chat.index');
}
}
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