<?php

namespace App\Cache\Base;

use Illuminate\Support\Facades\Cache;

//用户缓存用户基础信息（结构自己组装或等于数据表）primary_key为主键
abstract class BaseCache
{
    const CACHE_TTL = 60 * 60 * 24 * 3; //缓存时间 3天

    public string $primary_prefix; //前缀
    public string $primary_key; //值
    public string $primary_key_column; //值标识

    function setPrimaryKey($primary_key): void
    {
        $this->primary_key = $primary_key;
    }

    function getPrimaryKey($primary_key = null): ?string
    {
        if (empty($primary_key) && empty($this->primary_key)) return null;
        if (empty($primary_key)) $primary_key = $this->primary_key;
        return $this->primary_prefix . $primary_key;
    }

    function loadToCache(): bool
    {
        $sCacheKey = $this->getPrimaryKey();
        $aData = $this->loadData();
        if (empty($aData)) return false;
        return Cache::put($sCacheKey, serialize($aData), self::CACHE_TTL);
    }

    abstract function loadData(): array|null;

    function getCacheData($primary_key = null): array|null
    {
        if ($primary_key === null) $primary_key = $this->primary_key;
        if (empty($primary_key)) return [];
        $sCacheKey = $this->getPrimaryKey($primary_key);
        $sData = Cache::get($sCacheKey);
        if (empty($sData)) {
            $this->primary_key = $primary_key;
            if($this->loadToCache()) $sData = Cache::get($sCacheKey);
        }
        if (empty($sData)) return null;
        return unserialize($sData);
    }

    //根据primary_key获取缓存数据单个值，不指定key就默认获取所有
    function getCacheDataByKey($primary_key = null, $key = null): string|array|bool|null
    {
        if ($primary_key === null) $primary_key = $this->primary_key;
        if (empty($primary_key)) return false;
        $aData = $this->getCacheData($primary_key);
        if(empty($aData)) return null;
        if (empty($key)) return $aData;
        return $aData[$key] ?? '';
    }

    function delCacheData($primary_key = null): bool
    {
        if ($primary_key === null) $primary_key = $this->primary_key;
        if (empty($primary_key)) return false;
        $sCacheKey = $this->getPrimaryKey($primary_key);
        return Cache::forget($sCacheKey);
    }

}