<?php

namespace addons\shopro_aliyun_express\library;

use think\Db;

class ExpressConfig
{
    protected static $instance;
    protected $values = [];

    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    public static function reload()
    {
        self::$instance = null;
        return self::getInstance();
    }

    protected function __construct()
    {
        try {
            $rows = Db::name('shopro_aliyun_express_config')->select();
            foreach ($rows as $row) {
                $this->values[$row['name']] = $row['value'];
            }
        } catch (\Exception $e) {
            $this->values = [];
        }
    }

    public function get($name, $default = '')
    {
        return array_key_exists($name, $this->values) ? $this->values[$name] : $default;
    }

    public function all()
    {
        return $this->values;
    }

    public function isEnabled()
    {
        if ($this->get('express_enable', '1') !== '1') {
            return false;
        }

        // 已写入插件配置表则视为可用（避免 info.ini state=0 时业务 API 与后台测试行为不一致）
        try {
            if (\think\Db::name('shopro_aliyun_express_config')->count() > 0) {
                return true;
            }
        } catch (\Exception $e) {
            // ignore
        }

        if (!function_exists('get_addon_info')) {
            return false;
        }
        $info = get_addon_info('shopro_aliyun_express');
        return $info && intval($info['state'] ?? 0) === 1;
    }

    public function getProvider()
    {
        $provider = strtolower(trim($this->get('express_provider', 'aliyun')));
        if (!in_array($provider, ['aliyun', 'kdniao', 'expressbird'], true)) {
            return 'aliyun';
        }
        return $provider;
    }

    public function getCacheTtl()
    {
        $ttl = intval($this->get('cache_ttl', 300));
        return $ttl > 0 ? $ttl : 300;
    }

    public function getAliyunAppcode()
    {
        return trim($this->get('aliyun_appcode', ''));
    }

    public function getAliyunApiUrl()
    {
        $url = trim($this->get('aliyun_api_url', ''));
        return $url;
    }

    public function getAliyunApiMode()
    {
        $mode = strtolower(trim($this->get('aliyun_api_mode', 'auto')));
        $allowed = ['auto', 'expr_post', 'expr_get', 'wuliu_kdi', 'kzexpress'];
        return in_array($mode, $allowed, true) ? $mode : 'auto';
    }

    public function getAliyunHttpMethod()
    {
        $method = strtolower(trim($this->get('aliyun_http_method', 'auto')));
        return in_array($method, ['auto', 'get', 'post'], true) ? $method : 'auto';
    }

    public function getExpressBirdAppcode()
    {
        return trim($this->get('expressbird_appcode', ''));
    }
}