<?php

namespace YesWiki\Bazar\Service;

use YesWiki\Bazar\Field\CheckboxEntryField;
use YesWiki\Bazar\Field\CheckboxField;
use YesWiki\Bazar\Field\EnumField;
use YesWiki\Bazar\Field\FileField;
use YesWiki\Bazar\Field\ImageField;
use YesWiki\Bazar\Field\MapField;
use YesWiki\Bazar\Field\TagsField;
use YesWiki\Bazar\Field\UserField;
use YesWiki\Wiki;

class CSVManager
{
    protected $debug;
    protected $entryManager;
    protected $formManager;
    protected $wiki;
    protected $importdone;
    protected $errormsg;

    /**
     * contructor.
     */
    public function __construct(
        EntryManager $entryManager,
        FormManager $formManager,
        Wiki $wiki
    ) {
        $this->entryManager = $entryManager;
        $this->formManager = $formManager;
        $this->wiki = $wiki;
        $this->debug = ($this->wiki->GetConfigValue('debug') == 'yes');
        $this->importdone = false;
        $this->errormsg = [];
    }

    /**
     * get headers from a form.
     *
     * @param array $form form from which headers shoudl be extracted
     *
     * @return array ['propertyName1' => ['field' => field, 'fullHeader' => 'jjjjk'],
     *               'propertyName2' => ['field' => field, 'fullHeader' => 'jjjjk']]
     *               null if error
     */
    private function getHeaders(array $form): ?array
    {
        $headers = [];
        foreach ($form['prepared'] as $field) {
            $propName = $field->getPropertyName();
            if (!empty($propName)) {
                if ($field instanceof UserField) {
                    // TODO save userField data on one field
                    $fullHeader1 = 'NomWiki';
                    $fullHeader2 = 'Mot de passe';
                    if ($field->isRequired()) {
                        $fullHeader1 .= ' *';
                        $fullHeader2 .= ' *';
                    }

                    $headers['nomwiki'] = [
                        'field' => $field,
                        'fullHeader' => $fullHeader1,
                    ];
                    $headers['mot_de_passe_wikini'] = [
                        'field' => $field,
                        'fullHeader' => $fullHeader2,
                    ];
                } elseif ($field instanceof MapField) {
                    // TODO save userField data on one field
                    // after refacto MapField
                    $latitudeHeader = $field->getLatitudeField();
                    $longitudeHeader = $field->getLongitudeField();

                    $headers[$latitudeHeader] = [
                        'field' => $field,
                        'fullHeader' => $latitudeHeader,
                    ];
                    $headers[$longitudeHeader] = [
                        'field' => $field,
                        'fullHeader' => $longitudeHeader,
                    ];
                } else {
                    // *** standard case ****
                    $fullHeader = $field->getLabel();
                    if (!empty($fullHeader)) {
                        if ($field->isRequired()) {
                            $fullHeader .= ' *';
                        }

                        $headers[$propName] = [
                            'field' => $field,
                            'fullHeader' => $fullHeader,
                        ];
                    }
                }
            }
        }

        return $headers;
    }

    /**
     * convert array to csv.
     *
     * @return string csv
     */
    public function arrayToCSV(?array $data): ?string
    {
        if (!empty($data)) {
            // output up to 50MB is kept in memory, if it becomes bigger it will automatically be written to a temporary file
            $csvResource = fopen('php://temp/maxmemory:' . (50 * 1024 * 1024), 'r+');

            foreach ($data as $line) {
                // output the column headings
                fputcsv($csvResource, $line, ',', '"', '\\');
            }
            rewind($csvResource);

            // read file
            $csv = stream_get_contents($csvResource);

            // close file to release tmp file and leave system to ulink it
            fclose($csvResource);
        }

        return $csv ?? null;
    }

    /**
     * get CSV of all entries from form.
     *
     * @param <string>|null $pFormId : the form ID for EntryManager::search
     * @param <array> $pParams : parameters for EntryManager::search
     *	        	[
     *					"query" => <string>|<array> the query
     *					"keywords" => <string> the keywords string
     *				]
     * @param <array>|null $pOptions =
     *			 [
     * 				"fakeMode" => <bool> to create a template (default false),
     *				"keysInsteadOfValues" => <bool> export keys instead of values (default false)
     *			]
     *
     * @return array|null csv; null is empty or error
     */
    public function getCSVfromFormId(
        ?string $pFormId,
        array $pParams,
        ?array $pOptions = null
    ): ?array {
        $vFakeMode = isset($pOptions) ? ($pOptions['fakeMode'] ?? false) : false;
        $vKeysInsteadOfValues = isset($pOptions) ? ($pOptions['keysInsteadOfValues'] ?? false) : false;

        $vQuery = $pParams['query'] ?? '';
        $vKeywords = $pParams['keywords'] ?? '';
        $vSearchFields = $pParams['searchfields'] ?? '';

        if (!empty($pFormId)) {
            if ($form = $this->formManager->getOne($pFormId)) {
                $csv_raw = [];

                // get headers
                $headers = $this->getHeaders($form);

                // add header to csv_raw
                $csv_raw[] = array_values(array_merge(
                    $vFakeMode ? [] : ['datetime_create', 'datetime_latest'],
                    $vKeysInsteadOfValues
                        ? array_keys($headers)
                        : array_map(function ($fieldHeader) {
                            return $fieldHeader['fullHeader'];
                        }, $headers)
                ));

                if (!$vFakeMode) {
                    $vQuery = $this->wiki->services->get(SearchManager::class)->aggregateQueries($vQuery, $_GET);

                    // get lines for each entry
                    $entries = $this->entryManager->search([
                        'formsIds' => [$pFormId],
                        'keywords' => $vKeywords,
                        'queries' => $vQuery,
                        'searchfields' => $vSearchFields,
                    ]);

                    foreach ($entries as $entry) {
                        $csv_line = $this->getCSVLineFromEntry($entry, $headers, $vKeysInsteadOfValues);
                        if ($csv_line) {
                            $csv_raw[] = $csv_line;
                        }
                    }
                } else {
                    // emulate an 4 empty lines
                    for ($i = 1; $i < 4; $i++) {
                        $csv_line = $this->getTemplateCSVLine($headers, $i);
                        if ($csv_line) {
                            $csv_raw[] = $csv_line;
                        }
                    }
                }
            }
        }

        return $csv_raw ?? null;
    }

    /**
     * getCSVLineFromEntry.
     *
     * @param array $headers             from $this->getHeaders
     * @param bool  $keysInsteadOfValues to export keys insteadof values
     *
     * @return array|null $entry in csv or null if error
     */
    private function getCSVLineFromEntry(array $entry, array $headers, bool $keysInsteadOfValues = false): ?array
    {
        // line
        $line = [];
        // create date and latest date
        $line[] = date_format(date_create_from_format('Y-m-d H:i:s', $entry['date_creation_fiche']), 'd/m/Y H:i:s');
        $line[] = date_format(date_create_from_format('Y-m-d H:i:s', $entry['date_maj_fiche']), 'd/m/Y H:i:s');

        foreach ($headers as $propertyName => $header) {
            $value = $entry[$propertyName] ?? null;

            if ($value) {
                if ($propertyName == 'mot_de_passe_wikini') {
                    // secure password
                    $value = md5($value);
                } elseif (($header['field'] instanceof ImageField) || ($header['field'] instanceof FileField)) {
                    // ajoute l'URL de base aux images et fichiers
                    $value = $this->wiki->getBaseUrl() . '/' . BAZ_CHEMIN_UPLOAD . $value;
                } elseif (
                    $header['field'] instanceof EnumField
                    && !($header['field'] instanceof TagsField)
                    && !$keysInsteadOfValues
                ) {
                    $value = $this->getLabelsFromEnumFieldOptions($value, $header['field'], $entry);
                }
            }
            if ($header['field'] instanceof MapField) {
                if (!empty($entry[$header['field']->getPropertyName()])) {
                    $value = $entry[$header['field']->getPropertyName()];
                    if (is_array($value)) {
                        // standard case
                        $latitude = $value[$header['field']->getLatitudeField()] ?? null;
                        $longitude = $value[$header['field']->getLongitudeField()] ?? null;
                    }
                } elseif (!empty($entry['carte_google'])) {
                    // retrocompatibility carte_google
                    $values = explode('|', $entry['carte_google']);
                    $latitude = $values[0] ?? null;
                    $longitude = $values[1] ?? null;
                } else {
                    // compatibility with very old data
                    $latitude = $entry[$header['field']->getLatitudeField()] ?? null;
                    $longitude = $entry[$header['field']->getLongitudeField()] ?? null;
                }
                if (!empty($latitude) && !empty($longitude)) {
                    switch ($propertyName) {
                        case $header['field']->getLatitudeField():
                            $value = $latitude;
                            break;
                        case $header['field']->getLongitudeField():
                            $value = $longitude;
                            break;
                        default:
                            break;
                    }
                }
            }

            $line[] = $value ?? '';
        }

        return $line;
    }

    /**
     * getLabelsFromEnumFieldOptions.
     *
     * @param mixed               $value
     * @param BazarEnumFieldField $field
     *
     * @return mixed array|string|null
     */
    private function getLabelsFromEnumFieldOptions($value, EnumField $field, array $entry)
    {
        // prevent errors when entries are saved with array in values for entry
        // (bug from old doryphore version but it is better not to block export)
        if (is_array($value)) {
            $reasonMessage = 'an array : ' . json_encode($value)
                . ', which has been exported to string (not maintained). ';
            $value = implode(',', array_values($value));
        }

        if (!is_string($value)) {
            $reasonMessage = 'this : ' . json_encode($value)
                . ', which was replaced by null. ';
            $value = null;
        }
        if ($this->debug && !empty($reasonMessage)) {
            trigger_error('Error when exporting \'' . $field->getPropertyName() . '\''
                . ' from entry \'' . ($entry['id_fiche'] ?? '<no id_fiche>') . '\'.' .
                ' Waiting a string, giving ' . $reasonMessage
                . 'You should edit and save this entry to prevent error.');
        }

        if (!empty($value)) {
            $options = $field->getOptions();
            // explode values
            $values = explode(',', $value);
            if (is_array($values)) {
                $values = array_map(function ($tag) use ($options) {
                    return $options[$tag] ?? $tag;
                }, $values);
                $newValue = trim($this->arrayToCSV([$values]));
            } else {
                $newValue = $value;
            }
        }

        return $newValue ?? null;
    }

    /**
     * getTempalteCSVLine.
     *
     * @param array $headers from $this->getHeaders
     *
     * @return array|null $entry in csv or null if error
     */
    private function getTemplateCSVLine(array $headers, int $lineNumber): ?array
    {
        // line
        $line = [];
        $columnNumber = 1;

        foreach ($headers as $propertyName => $header) {
            if ($header['field'] instanceof CheckboxField || $header['field'] instanceof CheckboxEntryField) {
                $options = $header['field']->getOptions();
                $nb = min(3, count($options));
                if (!empty($options)) {
                    $line[] = trim($this->arrayToCSV([ // emulate CSV
                        array_map(function ($index) use ($options) {
                            return $options[array_keys($options)[$index]];
                        }, range(0, $nb - 1)),
                    ]));
                } else {
                    $line[] = 'ligne ' . $lineNumber . ' - champ ' . $columnNumber;
                }
            } elseif ($header['field'] instanceof TagsField) {
                $line[] = '"' . implode(',', array_map(function ($index) use ($lineNumber, $columnNumber) {
                    return 'ligne ' . $lineNumber . ' - champ ' . $columnNumber . ' - tag ' . $index;
                }, [1, 2, 3])) . '"';
            } elseif ($header['field'] instanceof EnumField) {
                $options = $header['field']->getOptions();
                $index = rand(1, count($options)) - 1;
                $line[] = trim($this->arrayToCSV([ // emulate CSV
                    [ //emulate a line
                        'ligne ' . $lineNumber . ' - champ ' . $columnNumber .
                            (empty($options) ? '' : ' - ex: ' . $options[array_keys($options)[$index]]),
                    ],
                ]));
            } else {
                $line[] = 'ligne ' . $lineNumber . ' - champ ' . $columnNumber;
            }
            $columnNumber++;
        }

        return $line;
    }

    /**
     * importEntry.
     *
     * @return array|null $createdEntries
     */
    public function importEntry(array $importedEntries, string $formId): ?array
    {
        if (!$this->importdone) {
            // Pour les traitements particulier lors de l import
            $GLOBALS['_BAZAR_']['provenance'] = 'import';
            $createdEntries = [];
            foreach ($importedEntries as $entry) {
                $entry = unserialize(base64_decode($entry));
                $entry = array_map('strval', $entry);

                $entry['antispam'] = 1;
                if (isset($entry['id_fiche'])) {
                    // to prevent errors when several entries with same bf_titre
                    unset($entry['id_fiche']);
                }
                $entry = $this->entryManager->create($formId, $entry);

                if ($entry) {
                    $createdEntries[] = $entry;
                }
            }
            $this->importdone = true;

            return $createdEntries;
        }

        return null;
    }

    /**
     * extract CSV from csv file.
     *
     * @param array|null [['entry' => $extractedData,'errormsg' => ['error1','error2']],...]
     */
    public function extractCSVfromCSVFile(?string $formId, $filesData, bool $detectColumnsOnHeaders = true)
    {
        if (!empty($formId)) {
            if ($form = $this->formManager->getOne($formId)) {
                // get headers
                $headers = $this->getHeaders($form);

                // import file
                if (!empty($filesData) && ($filesData['error'] == 0)) {
                    //Check if the file is csv
                    $filename = basename($filesData['name']);
                    $ext = substr($filename, strrpos($filename, '.') + 1);
                    if ($ext == 'csv') {
                        if (($handle = fopen($filesData['tmp_name'], 'r')) !== false) {
                            if (($firstLine = fgetcsv($handle, 0, ',', '"', '\\')) !== false) {
                                if ($columnIndexesForPropertyNames =
                                    $this->getColumnIndexesForPropertyNames($firstLine, $headers, $detectColumnsOnHeaders)
                                ) {
                                    // next lines
                                    $extracted = [];
                                    while (($data = fgetcsv($handle, 0, ',', '"', '\\')) !== false) { // init errors
                                        $this->errormsg = [];
                                        $extractedData = $this->getEntryFromCSVLine($data, $headers, $columnIndexesForPropertyNames, $formId);
                                        $extracted[] = [
                                            'entry' => $extractedData,
                                            'errormsg' => $this->errormsg,
                                        ];
                                    }
                                }
                            }
                            fclose($handle);

                            return $extracted ?? null;
                        }
                    }
                }
            }
        }

        return null;
    }

    /**
     * get columnIndexes for propertyNames.
     *
     * @param array $firstLine of the CSV from fgetcsv
     * @param array $headers   from getHeaders
     *
     * @return array|null [$propertyName => $index, ...], null if error
     */
    private function getColumnIndexesForPropertyNames(array $firstLine, array $headers, bool $detectColumnsOnHeaders = false): ?array
    {
        if ($detectColumnsOnHeaders) {
            // init data
            $firstLineIndexed = [];
            foreach ($firstLine as $key => $val) {
                // usefull to preserve index with splice because not possible with numeric keys
                $firstLineIndexed['key_' . $key] = $val;
            }
            $data = [
                'columnIndexes' => [],
                'firstLine' => $firstLineIndexed,
                'headers' => $headers,
                'originalHeadersKeys' => array_keys($headers),
            ];
            $data = $this->detectDateTimeHeaders($data);
            $data = $this->detectHeadersOnFullHeader($data);
            $data = $this->detectHeadersOnLabels($data);
            $data = $this->detectHeadersOnLabelsWithStar($data);
            $data = $this->detectHeadersOnPropertyName($data);
            $data = $this->detectHeadersModifiedAfterOneDetected($data);
            $columnIndexes = $data['columnIndexes'];
        } else {
            $index = 0;
            // sweep on headers
            $columnIndexes = [];
            foreach ($headers as $propertyName => $header) {
                if (isset($firstLine[$index])) {
                    $columnIndexes[$propertyName] = $index;
                }
                $index++;
            }
        }

        return !empty($columnIndexes) ? $columnIndexes : null;
    }

    /**
     * splice array from key.
     *
     * @param array &$line
     */
    private function array_splice_from_key(array &$line, string $key)
    {
        $index = array_search($key, array_keys($line));
        array_splice($line, $index, 1);
    }

    /**
     * get column indexes for datetimes.
     */
    private function detectDateTimeHeaders(array $data): array
    {
        foreach (['datetime_create', 'datetime_latest'] as $value) {
            $first_found_key = array_search($value, $data['firstLine'], true);
            if ($first_found_key !== false) {
                $this->array_splice_from_key($data['firstLine'], $first_found_key);
                // update columnindexes
                $data['columnIndexes'][$value] = (int)substr($first_found_key, strlen('key_'));
            }
        }

        return $data;
    }

    /**
     * remove column indexes for datetimes.
     */
    private function removeDateTimeColumns(array $columns): array
    {
        foreach (['datetime_create', 'datetime_latest'] as $value) {
            if (in_array($value, array_keys($columns))) {
                $this->array_splice_from_key($columns, $value);
            }
        }

        return $columns;
    }

    /**
     * get column indexes on condition.
     */
    private function detectHeaders(array $data, $condition): array
    {
        $foundPropertyNames = [];
        foreach ($data['headers'] as $propertyName => $header) {
            $first_found_key = array_search($condition($propertyName, $header), $data['firstLine'], true);
            if ($first_found_key !== false) {
                // remove from firstLine
                $this->array_splice_from_key($data['firstLine'], $first_found_key);
                // to remove already found headers
                $foundPropertyNames[] = $propertyName;
                // update columnindexes
                $data['columnIndexes'][$propertyName] = (int)substr($first_found_key, strlen('key_'));
            }
        }
        // filter headers
        foreach ($foundPropertyNames as $propertyName) {
            $this->array_splice_from_key($data['headers'], $propertyName);
        }

        return $data;
    }

    /**
     * get column indexes on fullHeaders.
     */
    private function detectHeadersOnFullHeader(array $data): array
    {
        return $this->detectHeaders($data, function ($propertyName, $header) {
            return $header['fullHeader'];
        });
    }

    /**
     * get column indexes on labels.
     */
    private function detectHeadersOnLabels(array $data): array
    {
        return $this->detectHeaders($data, function ($propertyName, $header) {
            return $header['field']->getLabel();
        });
    }

    /**
     * get column indexes on labels with stars.
     */
    private function detectHeadersOnLabelsWithStar(array $data): array
    {
        return $this->detectHeaders($data, function ($propertyName, $header) {
            return $header['field']->getLabel() . ' *';
        });
    }

    /**
     * get column indexes on propertyName.
     */
    private function detectHeadersOnPropertyName(array $data): array
    {
        return $this->detectHeaders($data, function ($propertyName, $header) {
            return $propertyName;
        });
    }

    /**
     * get column indexes if modified after one detected columns.
     */
    private function detectHeadersModifiedAfterOneDetected(array $data): array
    {
        // not found indexes
        $notFoundIndexes = array_map(function ($key) {
            return (int)substr($key, strlen('key_'));
        }, array_keys($data['firstLine']));
        // detect modified fields after one detected
        foreach ($notFoundIndexes as $index) {
            $propertyNameForPreviousIndex = array_search($index - 1, $data['columnIndexes'], true);
            if ($index == 0 || $propertyNameForPreviousIndex !== false) {
                if ($index == 0 || $propertyNameForPreviousIndex == 'datetime_latest') {
                    $keyIndexForPreviousPropertyName = -1;
                } else {
                    $keyIndexForPreviousPropertyName = array_search($propertyNameForPreviousIndex, $data['originalHeadersKeys'], true);
                }
                $waitedPropertyName = $data['originalHeadersKeys'][$keyIndexForPreviousPropertyName + 1] ?? null;
                if (in_array($waitedPropertyName, array_keys($data['headers']))) {
                    // remove from firstLine
                    $this->array_splice_from_key($data['firstLine'], 'key_' . $index);
                    // update columnindexes
                    $data['columnIndexes'][$waitedPropertyName] = $index;
                    // remove already found headers
                    $this->array_splice_from_key($data['headers'], $waitedPropertyName);
                }
            }
        }

        return $data;
    }

    /**
     * getEntryFromCSVLine.
     *
     * @param array $data                          array line from CSV file
     * @param array $headers                       from getHeaders
     * @param array $columnIndexesForPropertyNames from getcolumnIndexesForPropertyNames
     *
     * @return array|null entry
     */
    private function getEntryFromCSVLine(array $data, array $headers, array $columnIndexesForPropertyNames, string $formId): ?array
    {
        $entry = [];
        $skipFields = ['datetime_create', 'datetime_latest'];
        foreach ($columnIndexesForPropertyNames as $propertyName => $index) {
            if (!in_array($propertyName, $skipFields)) {
                $field = $headers[$propertyName]['field'];
            } else {
                $field = ''; // fake entry for skipped fields
            }
            if (intval($index) == $index) {
                // standard case
                $value = $this->getValueFromData($data, $index);
                if (!empty($value)) {
                    if (
                        $field instanceof EnumField
                            && !($field instanceof TagsField)
                    ) {
                        // for tags not needed to get keys because these are the same
                        // and do not filter on existing tags but allow alls tags
                        $value = $this->extractValueFromEnumFieldData($value, $field);
                    } elseif ($field instanceof ImageField) {
                        // traitement des images (doivent être présentes dans le dossier files du wiki)
                        $value = $this->extractValueFromImageFieldData($value, $field);
                    } elseif ($field instanceof FileField) {
                        // traitement des images (doivent être présentes dans le dossier files du wiki)
                        $value = $this->extractValueFromFileFieldData($value, $field);
                    } elseif (in_array($propertyName, ['datetime_latest', 'datetime_create'])) {
                        $datetime = \DateTime::createFromFormat(
                            'd/m/Y H:i:s',
                            $value,
                            new \DateTimeZone($this->wiki->config['timezone'])
                        );
                        $value = $datetime->getTimestamp();
                    }
                    $entry[$propertyName] = $value;
                }
            }
        }
        // append entry's data
        if (!empty($entry['bf_titre'])) {
            $entry['id_fiche'] = genere_nom_wiki($entry['bf_titre']);
            $entry['id_typeannonce'] = $formId;
            $entry['date_creation_fiche'] = date('Y-m-d H:i:s', $entry['datetime_create'] ?? time());
            $entry['date_maj_fiche'] = date('Y-m-d H:i:s', $entry['datetime_latest'] ?? time());
            if ($this->wiki->UserIsAdmin()) {
                $entry['statut_fiche'] = 1;
            } else {
                $entry['statut_fiche'] = $this->wiki->config['BAZ_ETAT_VALIDATION'];
            }
        } else {
            $this->errormsg[] = 'Empty $entry[\'bf_titre\'] in ' . get_class($this) . ', line ' . __LINE__;

            return null;
        }
        foreach ($skipFields as $field) {
            if (isset($entry[$field])) {
                unset($entry[$field]);
            }
        }

        return !empty($entry) ? $entry : null;
    }

    /**
     * extract value from data.
     *
     * @param array $data array line from CSV file
     *
     * @return mixed value
     */
    private function getValueFromData(array $data, int $index)
    {
        if (isset($data[$index])) {
            $value = $data[$index];
            $value = str_replace(
                [
                    '&sbquo;', '&fnof;', '&bdquo;',
                    '&hellip;', '&dagger;', '&Dagger;',
                    '&circ;', '&permil;', '&Scaron;',
                    '&lsaquo;', '&OElig;', '&lsquo;',
                    '&rsquo;', '&ldquo;', '&rdquo;',
                    '&bull;', '&ndash;', '&mdash;',
                    '&tilde;', '&trade;', '&scaron;',
                    '&rsaquo;', '&oelig;', '&Yuml;',
                ],
                [
                    chr(130), chr(131), chr(132),
                    chr(133), chr(134), chr(135),
                    chr(136),
                    chr(137), chr(138), chr(139),
                    chr(140), chr(145), chr(146),
                    chr(147),
                    chr(148), chr(149), chr(150),
                    chr(151), chr(152), chr(153),
                    chr(154),
                    chr(155), chr(156), chr(159),
                ],
                $value
            );
        }

        return $value ?? null;
    }

    /**
     * extractValueFromEnumFieldData.
     *
     * @param string $value, CSV saved in value
     *
     * @return string $newValue
     */
    private function extractValueFromEnumFieldData(string $value, EnumField $field): string
    {
        // get Options
        $options = array_map('trim', $field->getOptions());
        $flippedOptions = [];
        // not using array_flip because it takes the last duplicated index, we prefer the first one
        foreach ($options as $key => $val) {
            $key = trim($key);
            $val = trim($val);

            if (!isset($flippedOptions[$val])) {
                $flippedOptions[$val] = $key;
            }
        }

        // extract CSV and check if multiple values are present : they should be quoted
        if (preg_match('/"[^"]+"/', $value)) {
            $values = str_getcsv($value, ',', '"', '\\');
        } else {
            $values = [$value];
        }

        // convert values to index
        $indexes = array_map(function ($option) use ($options, $flippedOptions) {
            $option = trim($option);
            if (isset($flippedOptions[$option])) {
                // search if $option is a correct value then take assoiacted index
                return $flippedOptions[$option];
            } elseif (isset($options[$option])) {
                //search if $option is an index
                return $option;
            } else {
                return null;
            }
        }, $values);

        return implode(',', $indexes);
    }

    /**
     * extractValueFromImageFieldData.
     *
     * @param string $value, CSV saved in value
     *
     * @return string $newValue
     */
    private function extractValueFromImageFieldData(string $value, ImageField $field): string
    {
        // TODO refactor this part if needed because only copied
        $imageorig = trim($value);
        $nomimage = renameUrlToSanitizedFilename($imageorig);
        // test si c'est url vers l'image
        $fileCopied = copyUrlToLocalFile($imageorig, BAZ_CHEMIN_UPLOAD . $nomimage);
        if ($fileCopied) {
            $value = $nomimage;
        } elseif (file_exists(BAZ_CHEMIN_UPLOAD . $imageorig)) {
            if (preg_match('/(gif|jpeg|png|jpg)$/i', $nomimage)) {
                //on enleve les accents sur les noms de fichiers, et les espaces
                $nomimage = preg_replace(
                    '/&([a-z])[a-z]+;/i',
                    '$1',
                    $imageorig
                );
                $nomimage = str_replace(' ', '_', $nomimage);
                $value = $nomimage;
                $chemin_destination = BAZ_CHEMIN_UPLOAD . $nomimage;

                //verification de la presence de ce fichier
                if (!file_exists($chemin_destination)) {
                    rename(
                        BAZ_CHEMIN_UPLOAD .
                            $imageorig,
                        $chemin_destination
                    );
                    chmod($chemin_destination, 0755);
                }
            } else {
                $this->errormsg[] = _t('BAZ_BAD_IMAGE_FILE_EXTENSION');
            }
        } else {
            $this->errormsg[] =
                _t('BAZ_IMAGE_FILE_NOT_FOUND') .
                ' : ' . $imageorig;
        }

        return $value;
    }

    /**
     * extractValueFromFileFieldData.
     *
     * @param string $value, CSV saved in value
     *
     * @return string $newValue
     */
    private function extractValueFromFileFieldData(string $value, FileField $field): string
    {
        // TODO refactor this part if needed because only copied

        $fileUrl = trim($value);
        $file = renameUrlToSanitizedFilename($fileUrl);
        // test si c'est url vers l'image
        $fileCopied = copyUrlToLocalFile($fileUrl, BAZ_CHEMIN_UPLOAD . $file);
        if ($fileCopied) {
            $value = $file;
        } elseif (file_exists(BAZ_CHEMIN_UPLOAD . $fileUrl)) {
            $value = $file;
            $chemin_destination = BAZ_CHEMIN_UPLOAD . $file;
            //verification de la presence de ce fichier
            if (!file_exists($chemin_destination)) {
                rename(
                    BAZ_CHEMIN_UPLOAD . $fileUrl,
                    $chemin_destination
                );
                chmod($chemin_destination, 0755);
            }
        } else {
            $this->errormsg[] = _t('BAZ_FILE_NOT_FOUND') . ' : ' . $fileUrl;
        }

        return $value;
    }

    /**
     * convert CSV raw to string to display in <pre>.
     *
     * @return string $csvToDisplay
     */
    public function arrayToCSVToDisplay(?array $data): ?string
    {
        // format file
        $csv = $this->arrayToCSV($data) ?? '';

        // replace '<' and '> by html entities to prevent error in <pre> displaying
        $csvToDisplay = str_replace('<', htmlentities('<'), $csv);
        $csvToDisplay = str_replace('>', htmlentities('>'), $csvToDisplay);

        return $csvToDisplay;
    }

    /**
     * send CSV file or archive.
     *
     * @params <array> $formIds : forms ids
     * @params <array> params for search. ex : [ "query" => ..., "keywords" => ..., "champ" => ..., "ordre" => ... ]
     *
     * @return string $csvToDisplay
     */
    public function sendCsvOrZip(array $formIds, array $pParams, string $zipFileName = 'yeswiki-csv-exports.zip')
    {
        $csvFiles = [];
        foreach ($formIds as $fid) {
            $csvFiles['export-fiche-' . $fid . '.csv'] = $this->arrayToCSV(
                $this->getCSVfromFormId($fid, $pParams)
            );
        }

        $fileCount = count($csvFiles);

        if ($fileCount === 0) {
            exit('Error: No file data was provided.');
        }

        if ($fileCount === 1) {
            $fileName = key($csvFiles);
            $csvContent = reset($csvFiles);

            header('Content-Type: text/csv');
            header('Content-Disposition: attachment; filename="' . $fileName . '"');
            header('Content-Length: ' . strlen($csvContent));
            header('Connection: close');

            echo $csvContent;
            exit;
        }

        if ($fileCount > 1) {
            if (!class_exists('ZipArchive')) {
                exit('Error: The ZipArchive PHP extension is not installed or enabled.');
            }

            $zip = new \ZipArchive();
            $tempZipFile = tempnam(sys_get_temp_dir(), 'zip');

            if ($zip->open($tempZipFile, \ZipArchive::CREATE | \ZipArchive::OVERWRITE) !== true) {
                exit('Error: Cannot create ZIP archive.');
            }

            foreach ($csvFiles as $filename => $csvString) {
                $zip->addFromString($filename, $csvString);
            }

            $zip->close();

            header('Content-Type: application/zip');
            header('Content-Disposition: attachment; filename="' . $zipFileName . '"');
            header('Content-Length: ' . filesize($tempZipFile));
            header('Connection: close');

            readfile($tempZipFile);
            unlink($tempZipFile);
            exit;
        }
    }
}
