<?php

namespace app\common\Service\Commission;

use app\common\model\commission\Level as LevelModel;
use app\common\model\commission\CommissionGoods as CommissionGoodsModel;

/**
 * 分销商品服务（全新设计）
 */
class Goods
{
    public $commissionGoods;     // 分销商品模型
    protected $commissionConfig = null;    // 独立分销设置
    protected $commissionRules;     // 分销规则
    protected $skuPriceId;          // 商品规格ID

    /**
     * 构造函数
     * 
     * @param int|object $goods 商品ID或商品对象
     * @param int $skuPriceId 商品规格ID
     */
    public function __construct($goods, $skuPriceId = 0)
    {
        $this->skuPriceId = $skuPriceId;
        
        // 获取分销商品信息
        if (is_numeric($goods)) {
            $this->commissionGoods = CommissionGoodsModel::where([
                'goods_id' => $goods, 
                'status' => 1  // 参与分销
            ])->find();
        } else {
            $this->commissionGoods = $goods;
        }

        if ($this->commissionGoods) {
            // 获取独立配置
            $this->commissionConfig = $this->commissionGoods->getCommissionConfig();
            
            // 获取佣金规则
            $this->commissionRules = $this->loadCommissionRules();
        } else {
            $this->commissionRules = false;
        }
    }

    /**
     * 加载佣金规则
     * @return array|false
     */
    private function loadCommissionRules()
    {
        if (!$this->commissionGoods) {
            return false;
        }

        switch ($this->commissionGoods->rule_type) {
            case 0: // 默认规则
                return $this->getDefaultCommissionRules();
                
            case 1: // 独立规则
                return $this->commissionGoods->getCommissionRules($this->skuPriceId);
                
            case 2: // 批量规则
                return $this->commissionGoods->getCommissionRules(0);
                
            default:
                return false;
        }
    }

    public function getCommissionConfig()
    {
        return $this->commissionConfig;
    }

    public function getCommissionRules()
    {
        return $this->commissionRules;
    }

    /**
     * 获取对应分销商等级、对应层级的商品佣金规则
     * 
     * @param int $agentLevel 分销商等级
     * @param int $commissionLevel 分销层级
     * @return array|false
     */
    public function getCommissionLevelRule($agentLevel, $commissionLevel = 1)
    {
        if (empty($this->commissionRules)) {
            return false;
        }

        if (isset($this->commissionRules[$agentLevel][$commissionLevel])) {
            return $this->commissionRules[$agentLevel][$commissionLevel];
        }
        
        return false;
    }

    /**
     * 计算分销佣金
     * 
     * @param array $commissionRule 分销规则
     * @param string $amount 结算价格
     * @param int $goodsNum 购买数量
     * @return string
     */
    public function caculateGoodsCommission($commissionRule, $amount, $goodsNum = 1)
    {
        if (empty($commissionRule)) {
            return '0.00';
        }

        // 使用新的统一计算方法
        if ($this->commissionGoods) {
            return $this->commissionGoods->calculateCommission($commissionRule, $amount, $goodsNum);
        }

        return '0.00';
    }

    /**
     * 获取分销商等级默认规则
     * @return array
     */
    private function getDefaultCommissionRules()
    {
        $agentLevelRules = LevelModel::order('level asc')->column('commission_rules', 'level');
        $commissionRules = [];
        
        foreach ($agentLevelRules as $agentLevel => $rule) {
            $rule = json_decode($rule, true);
            if (!is_array($rule)) {
                continue;
            }
            
            foreach ($rule as $commission_level => $percent) {
                $commission_level = explode('_', $commission_level);
                if (count($commission_level) >= 2) {
                    $levelName = $commission_level[1];
                    // 将英文级别名映射为数字级别
                    $levelMap = [
                        'first' => 1,     // 一级
                        'second' => 2,    // 二级
                        'third' => 3,     // 三级
                    ];
                    $level = isset($levelMap[$levelName]) ? $levelMap[$levelName] : intval($levelName);
                    $commissionRules[$agentLevel][$level] = [
                        'type' => 'rate',
                        'value' => $percent,
                        'rate' => $percent,
                        'money' => ''
                    ];
                }
            }
        }
        
        return $commissionRules;
    }
}