<?php

namespace common\services;

use Yii;
use common\components\dict;
use common\models\xhGoodsCategory;

class xhGoodsCategoryService
{
	
	/**
	 * 根据分类id取商品列表
	 */
	public static function getGoodsListByCId($cId)
	{
		$list = self::getGoodsIdByCId($cId);
		$goodsList = [];
		if (!empty($list)) {
			foreach ($list as $key => $val) {
				$goodsId = $val['gId'];
				$goodsInfo = xhGoodsService::getById($goodsId);
				
				//取出较小的封面图片 ssh 2019.8.3
				$url = $goodsInfo['cover'];
				$pos = strrpos($url, '.');
				$pre = substr($url, 0, $pos);
				$ext = substr($url, ($pos + 1));
				$goodsInfo['middleCover'] = $pre . '_200.' . $ext;
				
				$goodsList[] = $goodsInfo;
			}
		}
		return $goodsList;
	}
	
	/**
	 * 根据分类id取商品id列表
	 */
	public static function getGoodsIdByCId($cId)
	{
		$list = xhGoodsCategory::getAllByCondition(['cId' => $cId], 'inTurn desc');
		$ids = [];
		if (!empty($list)) {
			foreach ($list as $key => $val) {
				$ids[] = ['inTurn' => $val['inTurn'], 'gId' => $val['gId']];
			}
		}
		return $ids;
	}
	
	public static function refreshByCId($cId)
	{
		$cacheKey = dict::getCacheKey('categoryGoodsList') . $cId;
		Yii::$app->redis->executeCommand('DEL', [$cacheKey]);
		$list = xhGoodsCategory::getAllByCondition(['cId' => $cId]);
		$ids = [];
		if (!empty($list)) {
			foreach ($list as $key => $val) {
				$addList = [];
				$addList[] = $cacheKey;
				$addList[] = $val['id'];
				$addList[] = $val['gId'];
				Yii::$app->redis->executeCommand('ZADD', $addList);//有序合集
			}
		}
	}
	
	public static function add($data, $cId, $gId)
	{
		xhGoodsCategory::add($data);
		$cacheKey = dict::getCacheKey('categoryGoodsList') . $cId;
		Yii::$app->redis->executeCommand('ZADD', [$cacheKey, 100, $gId]);//有序合集，参数中100 是排序默认值 对应表xhGoodsCategory的inTurn值
	}
	
	/**
	 * 修改商品时，修改商品分类，删除原有分类
	 */
	public static function delGId($cId, $gId)
	{
		xhGoodsCategory::deleteByCondition(['gId' => $gId, 'cId' => $cId]);
		$cacheKey = dict::getCacheKey('categoryGoodsList') . $cId;
		Yii::$app->redis->executeCommand('ZREM', [$cacheKey, $gId]);//有序合集，参数中100 是排序默认值 对应表xhGoodsCategory的inTurn值
	}
	
	/**
	 * 删除商品，清理想商品下的分类
	 */
	public static function delGoodsCategoryId($goods)
	{
		$id = $goods['id'];
		xhGoodsCategory::deleteByCondition(['gId' => $id]);//先删除分类表里商品
		$categoryString = $goods['categoryId'];
		if (!empty($categoryString)) {
			$categoryList = explode(',', $categoryString);
			$categoryList = array_filter($categoryList);
			if (!empty($categoryList)) {
				foreach ($categoryList as $cId) {
					self::refreshByCId($cId);//再更新删除分类的缓存
				}
			}
		}
	}
	
	public static function updateByCId($cId, $data)
	{
		xhSlide::updateByCondition(['cId' => $cId], $data);
		self::refreshByCId($cId);
	}
	
	public static function getByCondition($condition)
	{
		return xhGoodsCategory::getByCondition($condition);
	}
	
	/**
	 * 批量更新
	 */
	public static function batch_update($goodsId, $catData)
	{
		xhGoodsCategory::deleteByCondition(['gId' => $goodsId]);
		xhGoodsCategory::batchAdd($catData);
	}
}