<?php

namespace Modules\Communication\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class SorenaAiClient
{
    private string $apiUrl;

    private string $model;

    private float $temperature;

    private int $timeout;

    private string $token;

    public function __construct()
    {
        $config = config('communication.sorena_ai', []);
        $this->apiUrl = $config['url'] ?? 'https://saeed-taghadosi.ir/ai/demo';
        $this->model = $config['model'] ?? 'gpt-3.5-turbo-0125';
        $this->temperature = (float) ($config['temperature'] ?? 0.3);
        $this->timeout = (int) ($config['timeout'] ?? 60);
        $this->token = $config['token'] ?? '';
    }

    /**
     * @param  array<int, array{role: string, content: string}>  $messages
     */
    public function chat(array $messages, ?float $temperature = null): ?string
    {
        try {
            $response = Http::timeout($this->timeout)
                ->withHeaders([
                    'Content-Type' => 'application/json',
                    'Authorization' => 'Bearer '.$this->token,
                ])
                ->withOptions(['verify' => false])
                ->post($this->apiUrl, [
                    'model' => $this->model,
                    'messages' => $messages,
                    'temperature' => $temperature ?? $this->temperature,
                ]);

            if (! $response->successful()) {
                Log::warning('Sorena AI HTTP '.$response->status(), ['body' => $response->body()]);

                return null;
            }

            return $this->extractText($response->json());
        } catch (\Throwable $e) {
            Log::error('Sorena AI request failed: '.$e->getMessage());

            return null;
        }
    }

    public function translate(string $text, string $from = 'fa', string $to = 'en'): ?string
    {
        $text = trim($text);
        if ($text === '') {
            return '';
        }

        $langNames = config('communication.translation_languages', [
            'fa' => 'فارسی',
            'en' => 'English',
            'ar' => 'العربية',
        ]);

        $fromName = $langNames[$from] ?? $from;
        $toName = $langNames[$to] ?? $to;

        $system = "تو یک مترجم حرفه‌ای {$fromName} به {$toName} هستی.\n\n"
            ."قوانین:\n"
            ."- فقط متن ترجمه‌شده را برگردان\n"
            ."- اصطلاحات فنی را دقیق ترجمه کن\n"
            ."- این متن گفتگوی زنده در جلسه آنلاین است";

        return $this->chat([
            ['role' => 'system', 'content' => $system],
            ['role' => 'user', 'content' => $text],
        ], 0.3);
    }

    /**
     * @param  array<string, mixed>|null  $data
     */
    private function extractText(?array $data): ?string
    {
        if (! is_array($data)) {
            return null;
        }

        $text = $data['res'] ?? $data['message'] ?? $data['response'] ?? $data['text'] ?? null;
        if (isset($data['choices'][0]['message']['content'])) {
            $text = $data['choices'][0]['message']['content'];
        }

        if (! $text || $text === 'Error') {
            return null;
        }

        return trim((string) $text);
    }
}