<?php

/**
 * @author Any
 * @description KISS
 * @date 2021年9月1日
 * @version 1.0.0
 * 
 * _____LOG_____
 * 
 */
namespace app\components;


use PHPExcel;
use PHPExcel_IOFactory;


class ExportFile
{
    public static function getSheetColIndex($index)
    {
        $letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
        if($index <= 26){
            return $letters[$index - 1];
        }
        if($index <= 26 * 26){
            $int = floor($index / 26);
            $remainder = $index % 26;
            return $letters[$int - 1] . $letters[$remainder - 1];
        }
        throw new \Exception("超出范围");
    }
    
    /**
     * @param array $data $data['title']工作表标题，$data['list']工作表数据
     * @param string $filename 文件保存路径
     * @param string $style 工作表样式
     * @param string $author 作者信息 
     */
    public static  function xlsx($data, $filename, $style="default", $author="Any")
    {
        //引入Excel类
        $objPHPExcel = new \PHPExcel();
        // 设置excel文档的属性
        $objPHPExcel->getProperties()->setCreator($author)
            ->setLastModifiedBy($author)
            ->setTitle($author)
            ->setSubject($author)
            ->setDescription($author)
            ->setKeywords($author)
            ->setCategory($author);
        //设置excel工作表名及文件名
        $title = $data['title'];
        $objPHPExcel->getActiveSheet()->setTitle($title);
        $objPHPExcel->getActiveSheet()->getRowDimension('1')->setRowHeight(25); 
        if(!isset($data['list'])){
            throw new \Exception("缺少数据");
        }
        foreach ($data['list'] as $index => $item){
            $rowIndex = $index + 1;
            for($k=0; $k < count($item); $k++){
                $pos = self::getSheetColIndex($k+1).$rowIndex;
                if($style == "default"){
                    $objPHPExcel->getActiveSheet()->setCellValue($pos,$item[$k]);
                    if($rowIndex == 1){
                        $objPHPExcel->getActiveSheet()->getStyle($pos)->getFont()->setSize(10)->setBold(true);
                        $objPHPExcel->getActiveSheet()->getStyle($pos)->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
                    }                        
                } else {
                    $objPHPExcel->getActiveSheet()->setCellValue($pos,$item[$k]);
                }
            }            
        }
        $exportPath = dirname($filename);
        $exportPath = trim($exportPath,".");
        $exportPath = trim($exportPath,"/");
        if(!file_exists($exportPath) && strlen($exportPath)){
            self::mkDir($exportPath);
        }
        $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
        $objWriter->save($filename);
        if(file_exists($filename)){
            return $filename;
        }
        throw new \Exception("文件导出失败");
    }
    
    public static function csv()
    {
        
    }
    
    //目录创建（递归创建）
    public static function mkDir($dir, $mode = 0777)
    {
        return is_dir($dir) or self::mkDir(dirname($dir), $mode) and mkdir($dir, $mode);
    }      
}