<?php

namespace App\Exports;
use Maatwebsite\Excel\Concerns\FromCollection;

class TraceExport implements FromCollection
{

    private $row;
    private $data;

    public function __construct($row,$data)
    {
        $this->row = $row;
        $this->data = $data;
    }

    public function collection()
    {
        $row = $this->row;
        $data = $this->data;

        //设置表头
        $key_arr=[];
        foreach ($row[0] as $key => $value) {
            $key_arr[] = $key;
        }

        //输入数据
        foreach ($data as $keys => $value) {
            $js = [];
            for ($i=0; $i < count($key_arr); $i++) {
                if($key_arr[$i]=='code'){
                    $js = array_merge($js, [$key_arr[$i] => env('APP_URL').(string)$value[$key_arr[$i]]]);
                }else{
                    $js = array_merge($js, [$key_arr[$i] => (string)$value[$key_arr[$i]]]);
                }
            }
            $row[]=$js;
            if($value['get_child']){
                foreach($value['get_child'] as $key=>$val){
                    $js = [];
                    for ($j=0; $j < count($key_arr); $j++) {
                        if($key_arr[$j]=='code'){
                            $js = array_merge($js, [$key_arr[$j] => env('APP_URL').(string)$val[$key_arr[$j]]]);
                        }else{
                            $js = array_merge($js, [$key_arr[$j] => (string)$val[$key_arr[$j]]]);
                        }
                    }
                    $row[]=$js;
                    if($val['get_child']){
                        foreach($val['get_child'] as $k=>$v){
                            $js=[];
                            for ($z=0; $z < count($key_arr); $z++) {
                                if($key_arr[$z]=='code'){
                                    $js = array_merge($js, [$key_arr[$z] => env('APP_URL').(string)$v[$key_arr[$z]]]);
                                }else{
                                    $js = array_merge($js, [$key_arr[$z] => (string)$v[$key_arr[$z]]]);
                                }

                            }
                            $row[]=$js;
                        }
                    }
                }
            }
        }
        return collect($row);
    }
}