<?php
declare (strict_types = 1);

namespace app\model\api;

use library\basic\BaseModel;
use library\traits\ModelTrait;
use think\Model;

/**
 * 聊天次数变动明细模型
 * @mixin \think\Model
 */
class ChatBalanceLog extends BaseModel
{
    use ModelTrait;
    
    protected $name = 'chat_balance_log';
    
    // 类型
    const TYPE_GIFT = 1;           // 新用户赠送
    const TYPE_BUY = 2;            // 积分购买
    const TYPE_FIRST_CHAT = 3;     // 首次聊天消耗
    const TYPE_ADMIN_ADD = 4;      // 管理员赠送
    const TYPE_ADMIN_SUB = 5;     // 管理员扣除
    
    /**
     * 记录变动
     * @param int $userId 用户ID
     * @param int $type 类型
     * @param int $num 变动数量
     * @param int $balance 变动后余额
     * @param string $remark 备注
     * @param int $relateId 关联ID
     * @return self
     */
    public static function record(int $userId, int $type, int $num, int $balance, string $remark = '', int $relateId = 0): self
    {
        return self::create([
            'user_id' => $userId,
            'type' => $type,
            'num' => $num,
            'balance' => $balance,
            'remark' => $remark,
            'relate_id' => $relateId,
            'create_time' => time(),
        ]);
    }
    
    /**
     * 获取用户变动记录
     * @param int $userId 用户ID
     * @param int $page 页码
     * @param int $limit 每页数量
     * @return array
     */
    public static function getUserLogs(int $userId, int $page = 1, int $limit = 10): array
    {
        $data = self::where('user_id', $userId)
            ->order('id desc')
            ->page($page, $limit)
            ->select();
        
        $total = self::where('user_id', $userId)->count();
        
        $list = [];
        foreach ($data ?: [] as $item) {
            $itemArr = $item->toArray();
            $itemArr['type_text'] = self::getTypeText((int)$itemArr['type']);
            $itemArr['num_text'] = (int)$itemArr['num'] > 0 ? '+' . $itemArr['num'] : (string)$itemArr['num'];
            $list[] = $itemArr;
        }
        
        return [
            'list' => $list,
            'total' => $total,
            'page' => $page,
            'limit' => $limit,
        ];
    }
    
    /**
     * 获取类型文本
     * @param int $type 类型
     * @return string
     */
    public static function getTypeText(int $type): string
    {
        $typeMap = [
            self::TYPE_GIFT => '新用户赠送',
            self::TYPE_BUY => '积分购买',
            self::TYPE_FIRST_CHAT => '首次聊天消耗',
            self::TYPE_ADMIN_ADD => '管理员赠送',
            self::TYPE_ADMIN_SUB => '管理员扣除',
        ];
        
        return $typeMap[$type] ?? '未知';
    }
}