<?php

namespace App\Http\Controllers\Api\Ai;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Services\Ai\AiDispatcherService;
use App\Services\DateRangeService;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;

class AiController extends Controller
{
    public function __construct(
        protected AiDispatcherService $dispatcher,
        protected DateRangeService $dateRangeService
    ) {}

    public function ask(Request $request)
    {
        $request->validate([
            'question' => 'required|string|max:500',
            'period_start' => 'nullable',
            'period_end' => 'nullable',
        ]);

        $user = $request->user();
        $role = $user?->role ?? 'guest';
        $question = $request->question;

        $periodStart = $request->period_start;
        $periodEnd = $request->period_end;
        $dates = $this->dateRangeService->getDateRangeForUser($user, $periodStart, $periodEnd, false);

        $cacheKey = 'ai_stats_' . md5("{$role}|{$periodStart}|{$periodEnd}|{$question}");

        $cached = Cache::get($cacheKey);
        if ($cached) {
            return response()->json([
                'success' => true,
                'from_cache' => true,
                'answer' => $cached['answer'],
                'structured' => $cached['structured'] ?? null,
            ]);
        }

        try {
            $result = $this->dispatcher->dispatch(
                question: "Период с {$dates[0]} по {$dates[1]}. Вопрос: {$question}",
                role: $role
            );

//            Cache::put($cacheKey, [
//                'answer' => $result['answer'],
//                'structured' => $result['structured'] ?? null,
//            ], now()->addMinutes(10));

            return response()->json([
                'success' => true,
                'from_cache' => false,
                'answer' => $result['answer'],
                'structured' => $result['structured'] ?? null,
            ]);

        } catch (\Exception $e) {
            Log::error('AI Dispatch Error: ' . $e->getMessage(), [
                'user' => $user?->id,
                'question' => $question,
                'period' => "$periodStart - $periodEnd",
            ]);

            return response()->json([
                'success' => false,
                'message' => 'Не удалось обработать запрос. Попробуйте позже.',
            ], 500);
        }
    }
}