<?php

namespace common\services;

use Yii;

use common\components\dict;
use common\models\xhCategory;

class xhCategoryService
{
	
	/**
	 * 更新分类菜单缓存
	 */
	public static function refreshMenu($sjId)
	{
		$preKey = dict::getCacheKey('categoryNavigationBar');
		$cacheKey = $preKey . $sjId;
		Yii::$app->redis->executeCommand('DEL', [$cacheKey]);
		$list = self::getAll($sjId);
		Yii::$app->redis->executeCommand('SET', [$cacheKey, json_encode($list)]);
		return $list;
	}
	
	/**
	 * 取出所有分类
	 */
	public static function getAll($sjId, $classify = null, $flag = null)
	{
		$list = self::getByCateogryId(0, $sjId, $classify, $flag);
		return $list;
	}

	/**
	 * 根据分类id取子集分类 $flag false 默认不带键名 true 返回带键名的
	 */
	public static function getByCateogryId($id, $sjId, $classify = null, $flag = null)
	{
		$condition = ['parentId' => $id, 'sjId' => $sjId];
		if (isset($classify)) {
			$condition['classify'] = $classify;
		}
		$xhCategory = xhCategory::getAllByCondition($condition, 'inTurn asc');
		$data = array();
		if ($xhCategory) {
			foreach ($xhCategory as $k => $v) {
				$id = $v['id'];
				$name = $v['categoryName'];
				$arr = array(
					'id' => $id,
					'categoryName' => $name,
					'classify' => $v['classify'],
					'cover' => $v['cover'],
					'description' => $v['description'],
					'isShow' => $v['isShow'],
					'child' => self::getByCateogryId($id, $sjId, $classify, $flag),
				);
				if ($flag) {
					$data[$id] = $arr;
				} else {
					$data[] = $arr;
				}
			}
		}
		return $data;
	}
	
	/**
	 * 取分类列表，没有层级关系
	 */
	public static function getList($sjId)
	{
		$preKey = dict::getCacheKey('categoryList');
		$cacheKey = $preKey . $sjId;
		$string = Yii::$app->redis->executeCommand('GET', [$cacheKey]);
		if (!empty($string)) {
			$arr = json_decode($string, true);
			return $arr;
		}
		$category = xhCategory::getAllByCondition(['sjId' => $sjId]);
		$list = [];
		if (!empty($category)) {
			foreach ($category as $key => $val) {
				$list[$val['id']] = $val['categoryName'];
			}
		}
		$string = json_encode($list);
		Yii::$app->redis->executeCommand('SET', [$cacheKey, $string]);
		return $list;
	}
	
	/**
	 * 添加分类
	 */
	public static function addCategory($data, $parentId, $sjId)
	{
		$c = xhCategory::getByCondition(['sjId' => $sjId, 'parentId' => $parentId], 'inTurn desc');
		$inTurn = !empty($c) ? $c['inTurn'] + 1 : 0;//排到最后面
		$data['inTurn'] = $inTurn;
		$data['showName'] = $data['categoryName'];
		$data['sjId'] = $sjId;
		$category = xhCategory::add($data);
		
		$id = $category['id'];
		$cacheKey = dict::getCacheKey('category') . $id;
		$params = [$cacheKey];
		$params[] = 'info_already_get_by_sql';
		$params[] = 'ok';//redis没有办法设置带空值的键，加此可以数据空时表示取过
		foreach ($category as $key => $val) {
			$params[] = $key;
			$params[] = $val;
		}
		Yii::$app->redis->executeCommand('HMSET', $params);//添加到缓存
		
		self::refreshMenu($sjId);//更新菜单
		return $category;
	}
	
	/**
	 * 修改分类
	 * @param  $id
	 * @param  $data
	 * @param  $sjId
	 */
	public static function updateById($id, $data, $sjId)
	{
		xhCategory::updateById($id, $data);
		$cacheKey = dict::getCacheKey('category') . $id;
		$params = [$cacheKey];
		foreach ($data as $key => $val) {
			$params[] = $key;
			$params[] = $val;
		}
		Yii::$app->redis->executeCommand('HMSET', $params);//更新缓存
		self::refreshMenu($sjId);//更新菜单
	}
	
	public static function deleteById($id, $sjId)
	{
		xhCategory::deleteById($id);
		$cacheKey = dict::getCacheKey('category') . $id;
		Yii::$app->redis->executeCommand('DEL', [$cacheKey]);//删除缓存
		$cacheKey = dict::getCacheKey('categoryGoodsList') . $id;
		Yii::$app->redis->executeCommand('DEL', [$cacheKey]);//删除 分类下的商品 的缓存
		self::refreshMenu($sjId);//刷新菜单缓存
	}
	
	public static function getById($id)
	{
		$category = xhCategory::find()->where(['id' => $id])->asArray()->one();
		return $category;
	}

	//取出要显示的菜单分类
	public static function getShowList($sjId)
	{
		$data = xhCategory::find()->where(['sjId' => $sjId, 'isShow' => 1])->limit(8)->orderBy('inTurn desc')->asArray()->all();
		return $data;
	}

}