<?php


namespace app\common;


use yii\data\ActiveDataProvider;
use yii\data\ArrayDataProvider;
use yii\db\ActiveQuery;
use yii\db\QueryInterface;
use yii\di\NotInstantiableException;

class PaginationHelper
{

    /**
     *
     * @param   \yii\db\ActiveQuery  $query
     * @param   int                  $limit
     * @param   string               $pageParam
     * @param   string               $pageSizeParam
     *
     * @return \yii\data\ActiveDataProvider
     */
    public static function createDataProvider($query, $limit = 10, $pageParam = 'page', $pageSizeParam = 'per_page')
    {
        $dataProvider = new ActiveDataProvider([
            'query' => $query,
            'pagination' => [
                //分页大小
                'pageSize' => \Yii::$app->request->get($pageSizeParam) ?: $limit,
                //设置地址栏当前页数参数名
                'pageParam' => $pageParam,
                //设置地址栏分页大小参数名
                'pageSizeParam' => $pageSizeParam,
            ],
        ]);

        return $dataProvider;
    }

    /**
     * @param $query
     * @param  int  $limit
     * @param  string  $pageParam
     * @param  string  $pageSizeParam
     *
     * @return \yii\db\QueryInterface
     * @throws \yii\di\NotInstantiableException
     */
    public static function createQueryProvider($query, $limit = 10, $pageParam = 'page', $pageSizeParam = 'limit')
    {
        $param = \Yii::$app->request->get();
        $pageSize = $param['limit'] ?: $param[$pageSizeParam];

        if ($query instanceof QueryInterface) {
            return $query->limit($pageSize)->offset(($param[$pageParam] - 1) * $pageSize);
        }
        throw new NotInstantiableException('not instanceof QueryInterFace');
    }

    /**
     * @param  array   $array
     * @param  int     $limit
     * @param  string  $pageParam
     * @param  string  $pageSizeParam
     * @param  array   $orderFields
     *
     * @return ArrayDataProvider
     */
    public static function createArrayDataProvider($array = [], $orderFields = [], $limit = 10, $pageParam = 'page', $pageSizeParam = 'limit')
    {
        $attributes = array_keys($orderFields);
        $order = $orderFields;
        $dataProvider = new ArrayDataProvider([
            'allModels' => $array,
            'sort' => [
                'attributes' => $attributes,
                'defaultOrder' => $order
            ],
            'pagination' => [
                //分页大小
                'pageSize' =>  \Yii::$app->request->get($pageSizeParam, 10),
                //设置地址栏当前页数参数名
                'pageParam' => $pageParam,
                //设置地址栏分页大小参数名
                'pageSizeParam' => $pageSizeParam,
            ],
        ]);

        return $dataProvider;
    }
}