<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use think\Db;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Reader\Csv;
use PhpOffice\PhpSpreadsheet\Reader\Xls;
use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
use think\Exception;
use think\exception\PDOException;

/**
 * 多选题题库
 *
 * @icon fa fa-circle-o
 */
class Duo extends Backend
{
    
    /**
     * Duo模型对象
     * @var \app\admin\model\Duo
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\Duo;

    }
    
    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */

    /**
     * 查看
     */
    public function index()
    {
        //设置过滤方法
        $this->request->filter(['strip_tags']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $total = $this->model
                ->where($where)
                ->order($sort, $order)
                ->count();

            $list = $this->model
                ->where($where)
                ->order($sort, $order)
                ->limit($offset, $limit)
                ->select();

            $list = collection($list)->toArray();
            foreach ($list as &$v){
                $v['study_id'] = Db::name('study')->where('id',$v['study_id'])->value('examname');
            }
            $result = array("total" => $total, "rows" => $list);

            return json($result);
        }
        return $this->view->fetch();
    }

    /**
     * 导入
     */
    public function import()
    {
        $file = $this->request->request('file');
        if (!$file) {
            $this->error(__('Parameter %s can not be empty', 'file'));
        }
        $filePath = ROOT_PATH . DS . 'public' . DS . $file;
        if (!is_file($filePath)) {
            $this->error(__('No results were found'));
        }
        //实例化reader
        $ext = pathinfo($filePath, PATHINFO_EXTENSION);
        if (!in_array($ext, ['csv', 'xls', 'xlsx'])) {
            $this->error(__('Unknown data format'));
        }
        if ($ext === 'csv') {
            $file = fopen($filePath, 'r');
            $filePath = tempnam(sys_get_temp_dir(), 'import_csv');
            $fp = fopen($filePath, "w");
            $n = 0;
            while ($line = fgets($file)) {
                $line = rtrim($line, "\n\r\0");
                $encoding = mb_detect_encoding($line, ['utf-8', 'gbk', 'latin1', 'big5']);
                if ($encoding != 'utf-8') {
                    $line = mb_convert_encoding($line, 'utf-8', $encoding);
                }
                if ($n == 0 || preg_match('/^".*"$/', $line)) {
                    fwrite($fp, $line . "\n");
                } else {
                    fwrite($fp, '"' . str_replace(['"', ','], ['""', '","'], $line) . "\"\n");
                }
                $n++;
            }
            fclose($file) || fclose($fp);

            $reader = new Csv();
        } elseif ($ext === 'xls') {
            $reader = new Xls();
        } else {
            $reader = new Xlsx();
        }

        //导入文件首行类型,默认是注释,如果需要使用字段名称请使用name
        $importHeadType = isset($this->importHeadType) ? $this->importHeadType : 'comment';

        $table = $this->model->getQuery()->getTable();
        $database = \think\Config::get('database.database');
        $fieldArr = [];

        //数据表注释以及字段
        $list = db()->query("SELECT COLUMN_NAME,COLUMN_COMMENT FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = ? AND TABLE_SCHEMA = ?", [$table, $database]);
        foreach ($list as $k => $v) {
            if ($importHeadType == 'comment') {
                $fieldArr[$v['COLUMN_COMMENT']] = $v['COLUMN_NAME'];
            } else {
                $fieldArr[$v['COLUMN_NAME']] = $v['COLUMN_NAME'];
            }
        }

        $fieldArr = [
            '考试科目名称'=>'study',
            '题目'=>'content',
            '选项数量'=>'num',
            '正确答案'=>'answer',
            'A'=>'A',
            'B'=>'B',
            'C'=>'C',
            'D'=>'D',
            'E'=>'E',
            'F'=>'F',
            'G'=>'G',
            'H'=>'H'
        ];


        //加载文件
        $insert = [];
        try {
            if (!$PHPExcel = $reader->load($filePath)) {
                $this->error(__('Unknown data format'));
            }
            $currentSheet = $PHPExcel->getSheet(0);  //读取文件中的第一个工作表
            $allColumn = $currentSheet->getHighestDataColumn(); //取得最大的列号
            $allRow = $currentSheet->getHighestRow(); //取得一共有多少行
            $maxColumnNumber = Coordinate::columnIndexFromString($allColumn);
            $fields = [];
            for ($currentRow = 1; $currentRow <= 1; $currentRow++) {
                for ($currentColumn = 1; $currentColumn <= $maxColumnNumber; $currentColumn++) {
                    $val = $currentSheet->getCellByColumnAndRow($currentColumn, $currentRow)->getValue();
                    $fields[] = $val;
                }
            }

            for ($currentRow = 2; $currentRow <= $allRow; $currentRow++) {
                $values = [];
                for ($currentColumn = 1; $currentColumn <= $maxColumnNumber; $currentColumn++) {
                    $val = $currentSheet->getCellByColumnAndRow($currentColumn, $currentRow)->getValue();
                    $values[] = is_null($val) ? '' : $val;
                }
                $row = [];
                $temp = array_combine($fields, $values);
                foreach ($temp as $k => $v) {
                    if (isset($fieldArr[$k]) && $k !== '') {
                        $row[$fieldArr[$k]] = $v;
                    }
                }
                if ($row) {
                    $insert[] = $row;
                }
            }
        } catch (Exception $exception) {
            $this->error($exception->getMessage());
        }
        if (!$insert) {
            $this->error(__('No rows were updated'));
        }
        $new_insert = $name = [];

        foreach ($insert as $k=>$v) {
            $xuan = [];
            if(!empty($v['A'])){
                array_push($xuan,$v['A']);
            }
            if (!empty($v['B'])){
                array_push($xuan,$v['B']);
            }
            if (!empty($v['C'])){
                array_push($xuan,$v['C']);
            }
            if (!empty($v['D'])){
                array_push($xuan,$v['D']);
            }
            if (!empty($v['E'])){
                array_push($xuan,$v['E']);
            }
            if (!empty($v['F'])){
                array_push($xuan,$v['F']);
            }
            if (!empty($v['G'])){
                array_push($xuan,$v['G']);
            }
            if (!empty($v['H'])){
                array_push($xuan,$v['H']);
            }
            $arr = $this->text($v['num']);

            $key = ['name','gender'];

            $option = $this->he_array($key,$arr,$xuan);
            $study = Db::name('study')->where('examname',$v['study'])->find();
            if($study) {
                $new_insert[] = [
                    'study_id' => $study['id'],
                    'content' => $v['content'],
                    'option'=>json_encode($option),
                    'type' => 1,
                    'answer' => $v['answer'],
                ];
            }else{
                $this->error('含有不存在的考试科目');
            }
        }

        try {
            //是否包含admin_id字段
            $has_admin_id = false;
            foreach ($fieldArr as $name => $key) {
                if ($key == 'admin_id') {
                    $has_admin_id = true;
                    break;
                }
            }
            if ($has_admin_id) {
                $auth = \app\admin\library\Auth::instance();
                foreach ($insert as &$val) {
                    if (!isset($val['admin_id']) || empty($val['admin_id'])) {
                        $val['admin_id'] = $auth->isLogin() ? $auth->id : 0;
                    }
                }
            }
            $this->model->saveAll($new_insert);
        } catch (PDOException $exception) {
            $msg = $exception->getMessage();
            if (preg_match("/.+Integrity constraint violation: 1062 Duplicate entry '(.+)' for key '(.+)'/is", $msg, $matches)) {
                $msg = "导入失败，包含【{$matches[1]}】的记录已存在";
            };
            $this->error($msg);
        } catch (Exception $e) {
            $this->error($e->getMessage());
        }
        $this->success();
    }

    public function text($num){
        $eng = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $str = substr($eng,0,$num);
        $arr = chunk_split($str,1,",");
        $arr1 = explode(',',trim($arr,','));
//        $array = [];
//        foreach ($arr1 as $v){
//            array_push($array,['name'=>$v]);
//        }
        return $arr1;
    }


    //将多个一维数组转为二维数组
    public function he_array($keys, ...$arrs){
        // 检查参数是否正确
        if(!$keys || !is_array($keys) || !$arrs || !is_array($arrs) || count($keys)!=count($arrs)){
            return array();
        }
        // 一维数组中最大长度
        $max_len = 0;
        // 整理数据，把所有一维数组转重新索引
        for($i=0,$len=count($arrs); $i<$len; $i++){
            $arrs[$i] = array_values($arrs[$i]);

            if(count($arrs[$i])>$max_len){
                $max_len = count($arrs[$i]);
            }
        }
        // 合拼数据
        $result = array();
        for($i=0; $i<$max_len; $i++){
            $tmp = array();
            foreach($keys as $k=>$v){
                if(isset($arrs[$k][$i])){
                    $tmp[$v] = $arrs[$k][$i];
                }
            }
            $result[] = $tmp;
        }
        return $result;
    }

    public function type(){
        $res = Db::name('study')->field('id,examname')->select();
        $arr = [];
        foreach($res as $key=>$value){
            $arr[$value['id']] = $value['examname'];
        }
        return json($arr);
    }

}