<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ScriptRecord extends Model
{
    use HasFactory;

    protected $table = 'mp_script_records';

    protected $fillable = [
        'uid',
        'script_id',
        'sequence',
        'role',
        'content',
    ];

    /**
     * 角色常量
     */
    const ROLE_USER = 'user';
    const ROLE_ASSISTANT = 'assistant';

    /**
     * 批量插入对话记录
     * 
     * @param int $uid 用户ID
     * @param int $scriptId 剧本ID
     * @param int $sequence 剧集序号
     * @param array $messages 消息数组
     * @return bool
     */
    public static function batchInsertRecords($uid, $scriptId, $sequence, $messages)
    {
        $records = [];
        $now = now();

        foreach ($messages as $message) {
            if (!isset($message['role']) || !isset($message['content'])) {
                continue;
            }

            // 只处理 user 和 assistant 角色
            if (!in_array($message['role'], [self::ROLE_USER, self::ROLE_ASSISTANT])) {
                continue;
            }

            $records[] = [
                'uid' => $uid,
                'script_id' => $scriptId,
                'sequence' => $sequence,
                'role' => $message['role'],
                'content' => is_array($message['content']) ? json_encode($message['content'], JSON_UNESCAPED_UNICODE) : $message['content'],
                'created_at' => $now,
                'updated_at' => $now,
            ];
        }

        if (empty($records)) {
            return false;
        }

        return self::insert($records);
    }
}