<?php
namespace app\service;

use PhpOffice\PhpSpreadsheet\Shared\Date as EDate;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use think\file\UploadedFile;

class Excel
{
    // 导出excel默认样式
    public static array $excelStyle = [
        'font'      => [
            'name' => '宋体',
        ],
        'alignment' => [
            'horizontal' => Alignment::HORIZONTAL_CENTER,  // 水平居中
            'vertical'   => Alignment::VERTICAL_CENTER,  // 垂直居中
            'wrapText'   => true,
        ],
        'borders'   => [
            'allBorders' => [
                'borderStyle' => Border::BORDER_THIN,
                'color'       => ['rgb' => 'eeeeee'],
            ]
        ],
    ];

    public static array $defaultSetting = [
        'cell_width'    => 30, // 默认列宽
        'font_size'     => 12, // 默认excel内容字体大小
    ];

    //导出
    static public function export($spreadsheet,$filename)
    {
        $writer = new Xlsx($spreadsheet);
        header("Content-Type: application/force-download");
        header("Content-Type: application/octet-stream");
        header("Content-Type: application/download");
        header('Content-Disposition:inline;filename="'.$filename.'"');
        header("Content-Transfer-Encoding: binary");
        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Pragma: no-cache");
        $writer->save('php://output');
        $spreadsheet->disconnectWorksheets();
        unset($spreadsheet);
        exit;
    }

    public static function cancelTimeLimit()
    {
        ini_set('max_execution_time', '0');
        ini_set("memory_limit", '-1');
        set_time_limit(0);
    }

    /**
     * 根据header字段获取可配置列的cellId列表
     * 默认前26列为可配置列A~Z, $headerLength不能超过26 * 27 = 702
     *
     * @param int $headerLength
     * @return array
     */
    public static function getCellIds(int $headerLength): array
    {
        $defaultCellIds = range('A', 'Z', 1);
        $cellIds = $defaultCellIds;
        $loop = ceil($headerLength / 26);
        if($loop>1) {
            $maxPrefixIndex = ($loop - 2) >= 25 ? 25 : ($loop - 2);
            for ($prefixIndex = 0; $prefixIndex<= $maxPrefixIndex; $prefixIndex++) {
                $prefix = $defaultCellIds[$prefixIndex];
                $cellIds = array_merge($cellIds, array_map(function ($val) use($prefix) {
                    return $prefix.$val;
                }, $defaultCellIds));
            }
        }
        return $cellIds;
    }

    /**
     * 设置导出表数据
     *
     * @param Worksheet $sheet 工作表对象
     * @param array $cellValues 数据信息，二维数组(ps：若字段值需要指定样式以数组格式传递，如[$val, DataType::TYPE_STRING])。第二行开始填充
     * @param array $header 表头信息, 第一行为表头
     * @param string $sheetTitle 工作表标题
     * @param array $cellWidthList 列宽样式，键值对，键名为列序号(从0开始计算)
     * @param array $excelStyle 表数据样式
     * @param array $defaultList 默认设置样式
     * @param array $cellWrapList 列换行样式
     * @return bool
     */
    public static function setExcelCells(Worksheet $sheet, array $cellValues, array $header, string $sheetTitle = '数据列表', $cellWidthList = [], $excelStyle = [], $defaultList = [], $cellWrapList = []): bool
    {
        $defaultStyle = [
            'font' => [
                'name' => '宋体',
            ],
            'alignment' => [
                'horizontal' => Alignment::HORIZONTAL_CENTER,  // 水平居中
                'vertical' => Alignment::VERTICAL_CENTER,  // 垂直居中
                'wrapText' => false,
            ],
            'borders' => [
                'allBorders' => [
                    'borderStyle' => Border::BORDER_THIN,
                    'color' => ['rgb'=>'eeeeee'],
                ]
            ],
        ];
        $headerLength = count($header);

        if($headerLength === 0) return false;
        $cellIds = self::getCellIds($headerLength);
        $lastCellId = $cellIds[$headerLength-1];
        $contentIndex = 2;
        foreach ($cellValues as $n => $itemCell) {
            foreach ($itemCell as $i => $cellValue) {
                if(is_array($cellValue)) {
                    $sheet->setCellValueExplicit($cellIds[$i] . $contentIndex, ...$cellValue);
                } else {
                    $sheet->setCellValue($cellIds[$i] . $contentIndex, $cellValue);
                }
            }
            $contentIndex++;
        }

        try {
            $headerStr = 'A1:' . $lastCellId.'1';
            $bodyStr = 'A2:' . $lastCellId . ($contentIndex - 1);

            $defaultWidth   = 24; // 默认列宽24个字符
            $fontSize       = 12; // 默认字体大小为12号
            if(!empty($defaultList)) {
                if(isset($defaultList['cell_width']) && is_numeric($defaultList['cell_width']) && $defaultList['cell_width'] > 0) {
                    $defaultWidth = $defaultList['cell_width'];
                }
                if(isset($defaultList['font_size']) && is_numeric($defaultList['font_size']) && $defaultList['font_size'] > 0) {
                    $fontSize = $defaultList['font_size'];
                }
            }


            $sheet->setTitle(empty($sheetTitle) ? '数据列表': $sheetTitle);
            $sheet->getDefaultColumnDimension()->setAutoSize($fontSize);
            $sheet->getStyle($headerStr)->getFont()->setBold(false)->setSize($fontSize+2);
            $sheet->getDefaultColumnDimension()->setWidth($defaultWidth);
            $sheet->fromArray($header, null, 'A1');
            $sheet->getStyle($headerStr)->applyFromArray($defaultStyle);
            $sheet->getStyle($bodyStr)->applyFromArray(empty($excelStyle) ? $defaultStyle : $excelStyle);

            // 自定义列宽
            if(!empty($cellWidthList)) {
                foreach ($cellWidthList as $cellId => $widthVal) {
                    if(isset($cellIds[$cellId]) && is_numeric($widthVal) && $widthVal > 0) {
                        $sheet->getColumnDimension($cellIds[$cellId])->setWidth($widthVal);
                    }
                }
            }

            //自定义列是否换行
            if(!empty($cellWrapList)) {
                foreach ($cellWrapList as $cellId => $boolVal) {
                    if(isset($cellIds[$cellId])) {
                        $wrap = $boolVal ? true : false;
                        $sheet->getStyle($cellIds[$cellId])->getAlignment()->setWrapText($wrap);
                    }
                }
            }

            return true;
        } catch (\Exception $e) {
            return false;
        }
    }

    // excel导入时间转换
    public static function getExcelTime($timeStr, $format = 'Y-m-d')
    {
        $timezone = ini_get('date.timezone');
        $timeStr = trim($timeStr);
        if (!empty($timeStr)) {
            if (is_numeric($timeStr)) {
                $toTimestamp = EDate::excelToTimestamp($timeStr, $timezone);
                $timeStr = date($format, $toTimestamp);
            } else {
                $toTimestamp = strtotime($timeStr);
                $timeStr = ($toTimestamp === false) ? '' : date($format, $toTimestamp);
            }
        } else {
            $timeStr = '';
        }
        return $timeStr;
    }
}