<?php

namespace app\models;

use Yii;
use app\components\FlashStorage;
use app\components\Serializer;
use Overtrue\Pinyin\Pinyin;

/**
 * This is the model class for table "{{%district}}".
 *
 * @property int $id ID
 * @property int $parent_id 父级ID
 * @property string $code 区划代码
 * @property string $name 名称
 * @property string $level 层级
 * @property int $created_at 添加时间
 * @property int $is_delete 是否删除
 * @property string $initial 首字母
 * @property string $initials 拼音首字母
 */
class District extends \yii\db\ActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%district}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['parent_id', 'created_at', 'is_delete'], 'integer'],
            [['code', 'name', 'level'], 'required'],
            [['code'], 'string', 'max' => 32],
            [['name'], 'string', 'max' => 64],
            [['level'], 'string', 'max' => 16],
            [['initial', 'initials'], 'string', 'max' => 50],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'parent_id' => '父级ID',
            'code' => '区划代码',
            'name' => '名称',
            'level' => '层级',
            'created_at' => '添加时间',
            'is_delete' => '是否删除',
            'initial' => '首字母',
            'initials' => '拼音首字母',
        ];
    }
    
    public static function getArr($levels = ['province', 'city', 'district'])
    {
        $level_md5 = md5(json_encode($levels));
        $cache_key = "_dh_ul_{$level_md5}";
        $data = FlashStorage::getCache($cache_key);
        if($data === false){
            $data = self::_getArr($levels);
            FlashStorage::setCache($cache_key, $data,86400);
        }
        return $data;        
    }
    
    public static function _getArr($levels)
    {
        $list = District::find()
            ->where([
                'is_delete' => 0,
            ])
            ->andWhere([
                'level' => $levels
            ])
            ->select('id,parent_id,name,level')
            ->asArray()->all();
        $district = [];
        foreach ($list as $index => $item){
            $district[$item['id']] = $item;
        }
        return $district;
    } 

    /**
     * 获取已父级id为$parent_id为根节点的树型结构数组
     *
     * @param array $arr
     * @param int $level 树型当前层
     * @param int $parent_id 父级id
     * @param int $floor 树型总层数
     * @return array
     */
    public static function getList(&$arr, $level = 0, $parent_id = 1, $floor = 3)
    {
        $treeData = [];// 保存结果
        $catList = $arr;
        foreach ($catList as &$item) {
            $parent_id = $item['parent_id'];
            if (isset($catList[$parent_id]) && !empty($catList[$parent_id])) {// 肯定是子分类
                $catList[$parent_id]['list'][] = &$catList[$item['id']];
            } else {// 肯定是一级分类
                $treeData[] = &$catList[$item['id']];
            }
        }
        unset($item);
        return $treeData[0]['list'];
    }    
    
    // 根据id获取信息
    public static function getDistrict($param)
    {
        if (is_array($param)) {
            $id = $param['id'];
        } else {
            $id = $param;
        }
        $arr = self::getArr();
        $list = $arr[$id];
        $str = (new Serializer())->encode($list);
        return (new Serializer())->decode($str);
    }
    
    // 根据指定的key=>value查找需要的数组
    public static function getInfo($param)
    {
        $newParam = [];
        foreach ($param as $key => $value) {
            $newParam[0] = $key;
            $newParam[1] = $value;
        }
        $arr = self::getArr();
        $list = array_filter($arr, function ($v) use ($newParam) {
            return $v[$newParam[0]] == $newParam[1];
        });
        $str = (new Serializer())->encode($list);
        return (new Serializer())->decode($str);
    }    
    

    public static function getTerritorial()
    {
        $data = FlashStorage::getGlobal('district_territorial_list');
        if ($data) {
            return $data;
        }
        $arr = self::getArr();
        $treeData = [];// 保存结果
        $catList = &$arr;
        foreach ($catList as &$item) {
            $item['selected'] = false;
            $parent_id = $item['parent_id'];
            if (isset($catList[$parent_id]) && !empty($catList[$parent_id])) {// 肯定是子分类
                $catList[$parent_id]['list'][] = &$catList[$item['id']];
            } else {// 肯定是一级分类
                $treeData[] = &$catList[$item['id']];
            }
        }
        unset($item);
        $data = $treeData;
        FlashStorage::setGlobal('district_territorial_list', $data);
        return $data;
    }    
    
    public static  function convertPy($content)
    {
        $pinyin = new Pinyin();
        $output = $pinyin->abbr($content);
        unset($pinyin);
        return $output;
    }
    
    public static function setRecordInitial($id,$name)
    {
        $name = trim($name);
        $initials = self::convertPy($name);
        $initials = strtoupper($initials);
        District::updateAll(['initial' => $initials[0], 'initials' => $initials],['id' => $id]);
        unset($id);
        unset($name);
        unset($initials);
    }
    
    public static function batchSetRecordInitial($limit = 1000, $max = 5000, $counter = 0)
    {
        set_time_limit(0);
        $list = District::find()
            ->where([
                'is_delete' => 0,
                'initial' => NULL
            ])
            ->select('id,name')
            ->limit($limit)->asArray()->all();
        if(count($list) == 0){
            return true;
        }
        foreach ($list as $index => $item){
            self::setRecordInitial($item['id'], $item['name']);
        }
        unset($list);
        $counter += 1;
        echo "已处理：第{$counter}页数据".PHP_EOL;
        if($counter * $limit >= $max){
            return true;
        }
        self::batchSetRecordInitial($limit, $max, $counter);
    }
    
    
    public static function getCityIndexList($levels = ['province', 'city', 'district'])
    {
        $level_md5 = md5(json_encode($levels));
        $cache_key = "_dh_ul_cil_{$level_md5}";
        $data = FlashStorage::getCache($cache_key);
        if($data === false){
            $data = self::_getCityIndexList($levels);
            FlashStorage::setCache($cache_key, $data,86400);
        }
        return $data;        
    }
    
    public static function _getCityIndexList($levels, $filter = [])
    {
        $chars = District::find()
            ->where([
                'is_delete' => 0,
            ])
            ->andWhere([
                'level' => $levels
            ])
            ->andFilterWhere($filter)                
            ->select('initial')->distinct(true)->orderBy(['initial' => SORT_ASC])->column();
        $district = [];
        foreach($chars as $index => $char){
            $list = District::find()
                ->where([
                    'is_delete' => 0,
                ])
                ->andWhere([
                    'level' => $levels,
                    'initial' => $char
                ])
                ->andFilterWhere($filter)    
                ->select('id,parent_id,name,level')
                ->asArray()->all();  
            $district[$char] = $list;
        }
        return $district;
    } 
    
}