<?php
declare(strict_types=1);

namespace App\Helper;

use Closure;
use Hyperf\Database\Model\Collection;

class Export
{
    const MODE_QUERY = 1;
    const MODE_ARRAY = 2;
    const MODE_COLLECTION = 3;
    
    public $name;

    protected $params;
    protected $basePath = BASE_PATH . '/public';
    protected $writerType = '.xlsx';
    protected $fileName;
    protected $filePath;
    protected $fileUrl;
    protected $diskOptions;
    protected $list;
    public $chunkCompareEnable = true;

    public $withSummary = false;

    public $chunkCompareOptions = [
        'key' => 'id',
        'symbol' => '<'
    ];

    public function __construct(array $params = [])
    {
        $this->params = $params;
        $this->init();
    }

    protected function init()
    {

    }

    public function query()
    {
        return null;
    }

    public function array(): array
    {
        return [];
    }

    public function collection(): Collection
    {
        return new Collection([]);
    }

    /**
     * 导出时每行的数据
     */
    public function map($item): array
    {
        return [];
    }

    /**
     * 导出时的表头
     */
    public function headings(): array
    {
        return [];
    }

    public function summary(): array
    {
        return [];
    }

    public function rangeQueryItems($items)
    {
        return $items;
    }

    /**
     * 导出时文件后缀
     */
    public function getExtension()
    {
        /* $extensions = [
            Excel::XLSX => '.xlsx',
            Excel::CSV => '.csv',
            // Excel::TSV => '.tsv',
            Excel::ODS => '.ods',
            Excel::XLS => '.xls',
            Excel::HTML => '.html',
            Excel::MPDF => '.pdf',
            Excel::DOMPDF => '.pdf',
            Excel::TCPDF => '.pdf',
        ];

        return $extensions[$this->writerType] ?? '.xlsx'; */
        return '.xlsx';
    }

    public function generateFileName()
    {
        $uniqueCode = Excel::generateUniqueCode($this->params, '', 8);
        if (!$this->name) {
            $this->fileName = date('YmdHis') . $uniqueCode;
        } else {
            $this->fileName = date('YmdHis') . $uniqueCode . '_' . $this->name;
        }
    }

    protected function generateFilePath()
    {
        if (!$this->fileName) {
            $this->generateFileName();
        }
        $excelPath = getRoutePrefix() . '/excels/';
        if (!is_dir($this->basePath . $excelPath)) {
            mkdir($this->basePath . $excelPath);
        }
        $this->fileUrl =  $excelPath . $this->fileName. $this->getExtension();
        $this->filePath = $this->basePath . $this->fileUrl;
    }

    public function getMode()
    {
        return self::MODE_QUERY;
    }

    protected function prepare()
    {

    }

    public function store()
    {
        $this->prepare();
        $this->generateFilePath();
        $exporter = new Exporter();
        $exporter->store($this, $this->filePath);
    }

    /**
     * 返回设置单元格样式的函数 function(Export, Worksheet)
     */
    public function getStyleSetting(): ?Closure
    {
        return null;
    }

    public function setFileName($fileName)
    {
        return $this->fileName = $fileName;
    }

    public function getFileName()
    {
        return $this->fileName;
    }

    public function getFileUrl()
    {
        return $this->fileUrl;
    }

    protected function check()
    {

    }

    public static function identity()
    {
        return Str::encrypt(static::class);
    }

    public static function getClassByIdentity($identity)
    {
        return Str::decrypt($identity);
    }
}