<?php

namespace Lc\SovBundle\Generator;

use Symfony\Component\HttpFoundation\StreamedResponse;

class CsvGenerator
{
        protected $arrayToExport;
        protected $columns;
        protected $titleDocument;

        protected $convertEncoding ;
        protected $fromEncoding ;
        protected $toEncoding ;
        protected $delimiter ;

        public function __construct()
        {
                $this->arrayToExport = array();
                $this->titleDocument = 'csv_file';
                $this->convertEncoding = false ;
                $this->fromEncoding = 'UTF-8' ;
                $this->toEncoding = 'ISO-8859-1' ;
                $this->delimiter = ';' ;
        }

        public function enableConvertEncoding($toEncoding, $fromEncoding = null)
        {
                $this->convertEncoding = true ;
                $this->toEncoding = $toEncoding ;

                if(!is_null($fromEncoding)) {
                        $this->fromEncoding = $fromEncoding ;
                }
        }

        public function encode($value)
        {
                if($this->convertEncoding) {
                        return mb_convert_encoding(
                                $value,
                                $this->toEncoding,
                                $this->fromEncoding) ;
                }

                return $value ;
        }

        public function encodeArray($array)
        {
                if($array && is_array($array)) {
                        return array_map(function($value) {
                                return $this->encode($value) ;
                        }, $array) ;
                }

                return $array ;
        }

        public function setTitle($title, $displayHeader = false){

                $this->titleDocument = $this->formatTitle($title);

                if($displayHeader) {
                        array_unshift($this->arrayToExport, array(''));
                        array_unshift($this->arrayToExport, array($title));
                }
        }

        public function setColumns($columns, $displayLegend = true) {
                $this->columns = array_fill_keys(array_keys($columns), null);
                if($displayLegend) $this->row($columns);
        }

        public function cell($column, $value){
                $this->arrayToExport[] = array_merge(
                        $this->columns,
                        array($column => $this->encode($value))
                );
        }

        public function row($values = null, $row = false){

                $values = $this->encodeArray($values) ;

                if(!$row){
                        if($values)$this->arrayToExport[] = array_merge($this->columns, $values);
                        else $this->arrayToExport[] = array();
                }else{
                        if($values)$this->arrayToExport[$row] = array_merge($this->columns, $values);
                        else $this->arrayToExport[$row] = array();
                }
        }

        public function emptyRow()
        {
                $this->row([]) ;
        }

        public function dump(){
                dump($this->arrayToExport);
        }

        public function createCsv($path)
        {
                $handle = fopen($path, 'w+');

                foreach ($this->arrayToExport as $line) {
                        fputcsv($handle, $line, $this->getDelimiter(), "\"");
                }
                fclose($handle);
        }

        public function getReponse(){
                $response = new StreamedResponse(function () {
                        $this->createCsv('php://output');
                });
                $response->headers->set('Content-Encoding', $this->toEncoding);
                $response->headers->set('Content-Type', 'application/force-download');
                $response->headers->set('Content-Disposition', 'attachment; filename="'.$this->titleDocument.'.csv"');
                return $response;
        }
        private function  formatTitle($str) {
                $str = str_replace("-", ' ', $str);
                $str = preg_replace('/\s+/', '_',$str);;
                //$str = str_replace(" ", '_', $str);
                $str = iconv('UTF-8', 'ASCII//TRANSLIT', $str);

                return $str;
        }


        public function getDelimiter()
        {
                return $this->delimiter ;
        }
}