<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/
if(version_compare(PHP_VERSION, '8.1.0') <= 0) {
	ini_set("auto_detect_line_endings", true);
}

class Import_CSVReader_Reader extends Import_FileReader_Reader {

	public function arrayCombine($key, $value) { 
		$combine = array(); 
		$dup = array(); 
		for($i=0;$i<php7_count($key);$i++) { 
			if(array_key_exists($key[$i], $combine)){ 
				if(!$dup[$key[$i]]) $dup[$key[$i]] = 1;
				$key[$i] = $key[$i]."(".++$dup[$key[$i]].")";
			} 
			$combine[$key[$i]] = $value[$i]; 
		} 
		return $combine; 
	}

	public function getFirstRowData($hasHeader=true) {
		global $default_charset;

		$fileHandler = $this->getFileHandler();

		$headers = array();
		$firstRowData = array();
		$currentRow = 0;
		while($data = fgetcsv($fileHandler, 0, $this->request->get('delimiter'), "\"", "\"")) {
			if($currentRow == 0 || ($currentRow == 1 && $hasHeader)) {
				if($hasHeader && $currentRow == 0) {
					foreach($data as $key => $value) {
						$headers[$key] = trim($this->convertCharacterEncoding(strip_tags(decode_html($value)), $this->request->get('file_encoding'), $default_charset));
					}
				} else {
					foreach($data as $key => $value) {
						$firstRowData[$key] = trim($this->convertCharacterEncoding(strip_tags(decode_html($value)), $this->request->get('file_encoding'), $default_charset));
					}
					break;
				}
			}
			$currentRow++;
		}

		if($hasHeader) {
			$noOfHeaders = php7_count($headers);
			$noOfFirstRowData = php7_count($firstRowData);
			// Adjust first row data to get in sync with the number of headers
			if($noOfHeaders > $noOfFirstRowData) {
				$firstRowData = array_merge($firstRowData, array_fill($noOfFirstRowData, $noOfHeaders-$noOfFirstRowData, ''));
			} elseif($noOfHeaders < $noOfFirstRowData) {
				$firstRowData = array_slice($firstRowData, 0, php7_count($headers), true);
			}
			$rowData = $this->arrayCombine($headers, $firstRowData);
		} else {
			$rowData = $firstRowData;
		}

		unset($fileHandler);
		return $rowData;
	}

	public function read() {
		global $default_charset;

		$fileHandler = $this->getFileHandler();
		$status = $this->createTable();
		if(!$status) {
			return false;
		}

		$fieldMapping = $this->request->get('field_mapping');
		$delimiter    = $this->request->get('delimiter');
		$hasHeader    = $this->request->get('has_header');
		$fileEncoding = $this->request->get('file_encoding');
		
		// NOTE: Retaining row-read and insert as LOAD DATA command is being disabled by default.
		$i = -1;
		while($data = fgetcsv($fileHandler, 0, $delimiter)) {
			$i++;
			if($hasHeader && $i == 0) continue;
			$mappedData = array();
			$allValuesEmpty = true;
			foreach($fieldMapping as $fieldName => $index) {
				$fieldValue = $data[$index];
				$mappedData[$fieldName] = $fieldValue;
				if($fileEncoding != $default_charset) {
					$mappedData[$fieldName] = $this->convertCharacterEncoding($fieldValue, $fileEncoding, $default_charset);
				}
				if(!empty($fieldValue)) $allValuesEmpty = false;
			}
			if($allValuesEmpty) continue;
			$fieldNames = array_keys($mappedData);
			$fieldValues = array_values($mappedData);
			$this->addRecordToDB($fieldNames, $fieldValues);
		}
		unset($fileHandler);
	}
}
?>
