<?php

namespace common\components\export;

use common\enums\DownloadEnum;
use common\helpers\UploadHelper;
use common\models\common\Attachment;
use common\models\common\Download;
use common\traits\ErrorTrait;
use Exception;
use Yii;
use yii\base\Component;

class CsvTool extends Component
{

    use ErrorTrait;

    const EXPORT_MODE_SYNC = 1;
    const EXPORT_MODE_ASYNC = 2;
    private $_base_dirname = 'download'; //下载中心目录
    private $_handler; // 文件指针
    public $file_dirname; //下载中心资源存放目录
    public $relative_filename; // 文件存储相对路径
    public $export_mode;
    public $filename;
    public $full_filename;
    public $header;
    public $data;
    public $file_size = 0;
    public $line_num = 0;
    public $download_url = '';
    public $absolute_dir = '';
    public $relative_dir = '';

    /**
     * 导出数据
     * @Author bing
     * @DateTime 2021-10-22 11:54:12
     * @param [type] $export_mode
     * @return void
     * @copyright: Copyright (c) 2020 广东七件事集团
     */
    public function export(bool $is_make_head = false)
    {
        try {
            $this->_checkParams($is_make_head);
            switch ($this->export_mode) {
                // 同步下载
                case self::EXPORT_MODE_SYNC:
                    header('Content-Type: application/vnd.ms-excel');
//                    header('Content-Disposition: attachment;filename*=utf-8' . "'zh_cn'" . iconv('utf-8', 'gbk', $this->filename . '.csv'));
                    header("Content-Disposition: attachment;filename={$this->filename}.csv");
                    header('Cache-Control: max-age=0');
                    //打开PHP文件句柄,php://output 表示直接输出到浏览器
                    $this->_handler = fopen('php://output', 'a');
                    $this->header = $this->_handRowData($this->header);
                    fputcsv($this->_handler, $this->header);
                    // 数据总量
                    if (!empty($this->data)) {
                        $i = 0;
                        $limit = 10000;
                        while ($this->data[$i]) {
                            if ($i % $limit == 0) {
                                // 清一下缓冲区
                                ob_flush();
                                flush();
                            }
                            $row = $this->_handRowData($this->data[$i]);
                            fputcsv($this->_handler, $row);
                            unset($this->data[$i]);
                            $i++;
                        }
                    }
                    fclose($this->_handler);
                    exit;
                    break;
                // 异步导出至下载中心
                case self::EXPORT_MODE_ASYNC:
                    $this->relative_dir = $this->_getBaseDonwLoadDir();
                    $this->absolute_dir = Yii::getAlias('@attachment') . '/' .$this->relative_dir;
                    $this->full_filename = $this->absolute_dir . '/' . $this->filename . '.csv';
                    $this->relative_filename = $this->relative_dir . '/' . $this->filename . '.csv';
                    if (!file_exists($this->full_filename)) {
                        $this->_handler = fopen($this->full_filename, 'a+');
                        fwrite($this->_handler, "\xEF\xBB\xBF");
                        //将数据通过fputcsv写到文件句柄
                        $this->header = $this->_handRowData($this->header);
                        fputcsv($this->_handler, $this->header);
                    }
                    $this->_handler = fopen($this->full_filename, 'a+');
                    $i = 0;
                    $limit = 10000;
                    while(!empty($this->data[$i])){
                        if($i != 0 && $i % $limit == 0){
                            // 清一下缓冲区
                            ob_flush();
                            flush();
                        }
                        $row = $this->_handRowData($this->data[$i]);
                        $row = array_values($row);
                        fputcsv($this->_handler, $row);
                        unset($this->data[$i]);
                        $i ++;
                        $this->line_num ++;
                    }
                    fclose($this->_handler);
                    $this->file_size = file_exists($this->full_filename) ? $this->transf_byte(filesize($this->full_filename)) : 0;
                    break;
            }
        } catch (Exception $e) {
            echo $e->getMessage();
            $this->setError($e->getMessage());
            return false;
        }
    }


    /**
     * 检查参数
     * @Author bing
     * @DateTime 2021-10-22 16:04:42
     * @return void
     * @copyright: Copyright (c) 2020 广东七件事集团
     */
    private function _checkParams($is_make_head = false)
    {
        if ($is_make_head) {
            if (!$this->filename || !$this->header) {
                throw new Exception('导出参数错误');
            }
        } else {
            if (!$this->filename || !$this->header || !$this->data) {
                throw new Exception('导出参数错误');
            }
        }
    }

    /**
     *
     * @Author bing
     * @DateTime 2021-10-22 14:55:47
     * @return string //相对路径
     * @copyright: Copyright (c) 2020 广东七件事集团
     */
    private function _getBaseDonwLoadDir()
    {
        $relative_dir = $this->_base_dirname;
        $absolute_dir = Yii::getAlias('@attachment') . '/' . $this->_base_dirname;
        if ($this->file_dirname) {
            $absolute_dir .= '/' . $this->file_dirname;
            $relative_dir .= '/' . $this->file_dirname;
        }
        if (!is_dir($absolute_dir)) {
            mkdir($absolute_dir, 0777, true);
        }
        return $relative_dir;
    }

    /**
     * 每一列数据做处理
     * @Author bing
     * @DateTime 2021-10-22 15:59:39
     * @copyright: Copyright (c) 2020 广东七件事集团
     * @param array $row
     * @return array
     */
    private function _handRowData($row){
        return array_map(function($clo){
            // json不做处理
            try {
                if(is_null(json_decode($clo))){
                    $clo = rtrim($clo, "\r\n");
                    $clo = str_replace(",", "，", $clo);
                    // $clo = is_string($clo) ? iconv('UTF-8', 'GBK', $clo) . "\t" : $clo;
                    // $clo = is_string($clo) ? iconv("UTF-8", "GB2312//IGNORE", $clo) . "\t" : $clo;
                    $clo = is_string($clo) ? $clo . "\t" : $clo;
                    $clo = is_int($clo) ? intval($clo) : $clo;
                    $clo = is_float($clo) ? floatval($clo) : $clo;
                }
                return $clo;
            } catch (\Exception $e) {
                return $clo;
            }
        },$row);
    }

    /**
     * 上传至云存储
     * @Author: hua
     * @DateTime: 2021/10/14 10:36
     * @Copyright: copyright (c) 2021 广东七件事集团
     * @param $mall_id
     * @param $relative_filename //相对路径的文件资源
     * @return string
     * @throws \League\Flysystem\FileExistsException
     * @throws \League\Flysystem\FileNotFoundException
     * @throws \yii\web\NotFoundHttpException
     */
    public function upload($mall_id, $relative_filename)
    {
        $config = \Yii::$app->services->attachment->getStorageConfig($mall_id);
        $config['mall_id'] = $mall_id;
        $upload = new UploadHelper($config, 'files');
        switch ($config['drive']) {
            case Attachment::DRIVE_LOCAL:
                return \Yii::getAlias('@attachurl') . '/'.$relative_filename;
            case Attachment::DRIVE_OSS:
                $url = $upload->upload($relative_filename);
                if (!empty($config['storage_aliyun_user_url'])) {
                    return $config['storage_aliyun_transport_protocols'].'://'.$config['storage_aliyun_user_url'] . '/' . $url;
                }
                break;
            case Attachment::DRIVE_COS:
                $url = $upload->upload($relative_filename);
                if (!empty($config['domain'])) {
                    return $config['domain'] . '/' . $url;
                }
                break;
            case Attachment::DRIVE_QINIU:
                $url = $upload->upload($relative_filename);
                if (!empty($config['domain']))  return $config['domain'] . '/' . $url;
                break;
        }
    }

    public function transf_byte($byte) {
        $kb = 1024;
        $mb = $kb * 1024;
        $gb = $mb * 1024;
        if ($byte < $kb) {
            return $byte . 'b';
        } else if ($byte < $mb) {
            return round($byte / $kb, 2) . 'kb';
        } else if ($byte < $gb) {
            return round($byte / $mb, 2) . 'mb';
        }
    }

    public function utf8ToGbk($string) {
        return iconv("UTF-8", "gbk//TRANSLIT", $string);
    }

    /**
     * @desc:上传至云存储和更新down模型
     * @Author: hua
     * @Date: 2021/11/15
     * @Time: 15:39
     * @Copyright: copyright (c) 2021 广东七件事集团
     * @param $download
     * @param $mall_id
     * @return mixed
     * @throws \League\Flysystem\FileExistsException
     * @throws \League\Flysystem\FileNotFoundException
     * @throws \yii\web\NotFoundHttpException
     */
    public function updateDown($download,$mall_id){
        $url = $this->upload($mall_id, $this->relative_filename);
        $download->status = DownloadEnum::STATUS_FINISH;
        $download->url = $url;
        $download->num = $this->line_num;
        $download->size = $this->file_size;
        return  $download->save();
    }

}