<?php

namespace App\Models;

use App\Config\Database;

class Message
{
    public static function findBySessionId(int $sessionId): array
    {
        $db = Database::getInstance();
        $stmt = $db->prepare('SELECT * FROM messages WHERE session_id = :session_id ORDER BY created_at ASC');
        $stmt->execute(['session_id' => $sessionId]);
        return $stmt->fetchAll();
    }

    public static function create(array $data): array
    {
        $db = Database::getInstance();
        $stmt = $db->prepare('INSERT INTO messages (session_id, role, content, file_info, thinking_content) VALUES (:session_id, :role, :content, :file_info, :thinking_content)');
        $stmt->execute([
            'session_id' => $data['session_id'],
            'role' => $data['role'],
            'content' => $data['content'],
            'file_info' => isset($data['file_info']) ? json_encode($data['file_info']) : null,
            'thinking_content' => $data['thinking_content'] ?? null,
        ]);

        $stmt = $db->prepare('SELECT * FROM messages WHERE id = :id');
        $stmt->execute(['id' => (int) $db->lastInsertId()]);
        return $stmt->fetch();
    }
}