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<?php |
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/** |
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* @package midcom.baseclasses |
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* @author The Midgard Project, http://www.midgard-project.org |
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* @copyright The Midgard Project, http://www.midgard-project.org |
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* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License |
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*/ |
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use midcom\datamanager\datamanager; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\StreamedResponse; |
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use Symfony\Component\HttpFoundation\ResponseHeaderBag; |
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/** |
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* Generic CSV export handler baseclass |
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* |
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* @package midcom.baseclasses |
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*/ |
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abstract class midcom_baseclasses_components_handler_dataexport extends midcom_baseclasses_components_handler |
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{ |
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/** |
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* @var datamanager[] |
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*/ |
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private array $_datamanagers = []; |
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/** |
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* Flag indicating whether or not the GUID of the first type should be included in exports. |
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*/ |
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public bool $include_guid = true; |
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/** |
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* Flag indicating whether or not totals for number fields should be generated |
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*/ |
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public bool $include_totals = false; |
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public array $csv = []; |
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protected string $_schema = ''; |
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private array $_rows = []; |
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private array $_totals = []; |
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private array $schemas = []; |
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/** |
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* @return midcom\datamanager\schemadb[] |
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*/ |
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abstract public function _load_schemadbs(string $handler_id, array &$args, array &$data) : array; |
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abstract public function _load_data(string $handler_id, array &$args, array &$data) : array; |
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public function _handler_csv(Request $request, string $handler_id, array $args, array &$data) |
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{ |
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midcom::get()->auth->require_valid_user(); |
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$this->_load_datamanagers($this->_load_schemadbs($handler_id, $args, $data)); |
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if (empty($args[0])) { |
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//We do not have filename in URL, generate one and redirect |
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if (empty($data['filename'])) { |
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$data['filename'] = preg_replace('/[^a-z0-9-]/i', '_', strtolower($this->_topic->extra)) . '_' . date('Y-m-d') . '.csv'; |
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} |
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if (!str_ends_with(midcom_connection::get_url('uri'), '/')) { |
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$data['filename'] = '/' . $data['filename']; |
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} |
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return new midcom_response_relocate(midcom_connection::get_url('uri') . $data['filename']); |
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} |
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midcom::get()->disable_limits(); |
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$rows = $this->_load_data($handler_id, $args, $data); |
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if (count($this->_datamanagers) == 1) { |
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foreach ($rows as $row) { |
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$this->_rows[] = [$row]; |
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} |
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} else { |
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$this->_rows = $rows; |
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} |
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if (empty($data['filename'])) { |
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$data['filename'] = str_replace('.csv', '', $args[0]); |
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} |
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$this->_init_csv_variables($request); |
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$response = new StreamedResponse($this->render_csv(...)); |
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$response->headers->set('Content-Disposition', $response->headers->makeDisposition( |
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ResponseHeaderBag::DISPOSITION_ATTACHMENT, |
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$data['filename']) |
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); |
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$response->headers->set('Content-Type', $this->csv['mimetype']); |
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return $response; |
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} |
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public function render_csv() |
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{ |
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// Make real sure we're dumping data live |
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midcom::get()->cache->content->enable_live_mode(); |
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// Dump headers |
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$first_type = array_key_first($this->_datamanagers); |
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$multiple_types = count($this->_datamanagers) > 1; |
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$row = []; |
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if ($this->include_guid) { |
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$row[] = $first_type . ' GUID'; |
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} |
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foreach ($this->_datamanagers as $type => $datamanager) { |
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foreach ($datamanager->get_schema($this->schemas[$type])->get('fields') as $name => $config) { |
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$title = $config['title']; |
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if ( $this->include_totals |
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&& $config['type'] == 'number') { |
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$this->_totals[$type . '-' . $name] = 0; |
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} |
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$title = $this->_l10n->get($title); |
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if ($multiple_types) { |
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$title = $this->_l10n->get($type) . ': ' . $title; |
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} |
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$row[] = $title; |
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} |
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} |
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$output = fopen("php://output", 'w'); |
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$this->_print_row($row, $output); |
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$this->_dump_rows($output); |
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if ($this->include_totals) { |
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$row = []; |
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foreach ($this->_datamanagers as $type => $datamanager) { |
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foreach ($datamanager->get_schema()->get('fields') as $name => $config) { |
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$value = ""; |
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if ($config['type'] == 'number') { |
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$value = $this->_totals[$type . '-' . $name]; |
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} |
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$row[] = $value; |
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} |
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} |
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$this->_print_row($row, $output); |
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} |
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fclose($output); |
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} |
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/** |
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* Internal helper, loads the datamanagers for the given types. Any error triggers a 500. |
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*/ |
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private function _load_datamanagers(array $schemadbs) |
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{ |
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if (empty($this->_schema)) { |
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throw new midcom_error('Export schema ($this->_schema) must be defined'); |
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} |
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foreach ($schemadbs as $type => $schemadb) { |
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$this->_datamanagers[$type] = new datamanager($schemadb); |
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if ($schemadb->has($this->_schema)) { |
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$this->schemas[$type] = $this->_schema; |
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} else { |
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$this->schemas[$type] = $schemadb->get_first()->get_name(); |
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} |
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} |
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} |
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private function _dump_rows($output) |
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{ |
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$first_type = array_key_first($this->_datamanagers); |
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// Output each row |
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foreach ($this->_rows as $num => $row) { |
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$data = []; |
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foreach ($this->_datamanagers as $type => $datamanager) { |
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if (!array_key_exists($type, $row)) { |
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debug_add("row #{$num} does not have {$type} set", MIDCOM_LOG_INFO); |
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$target_size = count($datamanager->get_schema($this->schemas[$type])->get('fields')) + count($data); |
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$data = array_pad($data, $target_size, ''); |
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continue; |
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} |
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$object =& $row[$type]; |
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$datamanager->set_storage($object, $this->schemas[$type]); |
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if ( $this->include_guid |
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&& $type == $first_type) { |
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$data[] = $object->guid; |
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} |
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$csvdata = $datamanager->get_content_csv(); |
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foreach ($datamanager->get_schema()->get('fields') as $fieldname => $config) { |
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if ( $this->include_totals |
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&& $config['type'] == 'number') { |
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$this->_totals[$type . '-' . $fieldname] += $csvdata[$fieldname]; |
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} |
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$data[] = $csvdata[$fieldname]; |
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} |
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} |
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$this->_print_row($data, $output); |
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} |
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} |
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private function _print_row(array $row, $output) |
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{ |
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$row = array_map($this->encode_csv(...), $row); |
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fputcsv($output, $row, $this->csv['s'], $this->csv['q']); |
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} |
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private function _init_csv_variables(Request $request) |
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{ |
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// FIXME: Use global configuration |
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$this->csv['s'] = $this->_config->get('csv_export_separator') ?: ';'; |
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$this->csv['q'] = $this->_config->get('csv_export_quote') ?: '"'; |
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$this->csv['mimetype'] = $this->_config->get('csv_export_content_type') ?: 'application/csv'; |
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$this->csv['charset'] = $this->_config->get('csv_export_charset'); |
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if (empty($this->csv['charset'])) { |
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// Default to ISO-LATIN-15 (Latin-1 with EURO sign etc) |
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$this->csv['charset'] = 'ISO-8859-15'; |
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if ( $request->server->has('HTTP_USER_AGENT') |
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&& !preg_match('/Windows/i', $request->server->get('HTTP_USER_AGENT'))) { |
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// Except when not on windows, then default to UTF-8 |
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$this->csv['charset'] = 'UTF-8'; |
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} |
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} |
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} |
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private function encode_csv(string $data) : string |
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{ |
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/* START: Quick'n'Dirty on-the-fly charset conversion */ |
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if ($this->csv['charset'] !== 'UTF-8') { |
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$to_charset = "{$this->csv['charset']}//TRANSLIT"; |
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$stat = @iconv('UTF-8', $to_charset, $data); |
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if (!empty($stat)) { |
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$data = $stat; |
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} |
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} |
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/* END: Quick'n'Dirty on-the-fly charset conversion */ |
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return $data; |
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} |
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} |
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