<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Manipulation of table data like inserting, replacing and updating
 *
 * Usually called as form action from tbl_change.php to insert or update table rows
 *
 * @todo 'edit_next' tends to not work as expected if used ...
 * at least there is no order by it needs the original query
 * and the row number and than replace the LIMIT clause
 *
 * @package PhpMyAdmin
 */

/**
 * Gets some core libraries
 */
require_once 'libraries/common.inc.php';

/**
 * functions implementation for this script
 */
require_once 'libraries/insert_edit.lib.php';
require_once 'libraries/transformations.lib.php';

// Check parameters
PMA_Util::checkParameters(array('db', 'table', 'goto'));

$GLOBALS['dbi']->selectDb($GLOBALS['db']);

/**
 * Initializes some variables
 */
$goto_include = false;

$response = PMA_Response::getInstance();
$header = $response->getHeader();
$scripts = $header->getScripts();
$scripts->addFile('makegrid.js');
// Needed for generation of Inline Edit anchors
$scripts->addFile('sql.js');
$scripts->addFile('indexes.js');
$scripts->addFile('gis_data_editor.js');

// check whether insert row mode, if so include tbl_change.php
PMA_isInsertRow();

$after_insert_actions = array('new_insert', 'same_insert', 'edit_next');
if (isset($_REQUEST['after_insert'])
	&& in_array($_REQUEST['after_insert'], $after_insert_actions)
) {
	$url_params['after_insert'] = $_REQUEST['after_insert'];
	if (isset($_REQUEST['where_clause'])) {
		foreach ($_REQUEST['where_clause'] as $one_where_clause) {
			if ($_REQUEST['after_insert'] == 'same_insert') {
				$url_params['where_clause'][] = $one_where_clause;
			} elseif ($_REQUEST['after_insert'] == 'edit_next') {
				PMA_setSessionForEditNext($one_where_clause);
			}
		}
	}
}
//get $goto_include for different cases
$goto_include = PMA_getGotoInclude($goto_include);

// Defines the url to return in case of failure of the query
$err_url = PMA_getErrorUrl($url_params);

/**
 * Prepares the update/insert of a row
 */
list($loop_array, $using_key, $is_insert, $is_insertignore)
	= PMA_getParamsForUpdateOrInsert();

$query = array();
$value_sets = array();
$func_no_param = array(
	'CONNECTION_ID',
	'CURRENT_USER',
	'CURDATE',
	'CURTIME',
	'CURRENT_DATE',
	'CURRENT_TIME',
	'DATABASE',
	'LAST_INSERT_ID',
	'NOW',
	'PI',
	'RAND',
	'SYSDATE',
	'UNIX_TIMESTAMP',
	'USER',
	'UTC_DATE',
	'UTC_TIME',
	'UTC_TIMESTAMP',
	'UUID',
	'UUID_SHORT',
	'VERSION',
);
$func_optional_param = array(
	'RAND',
	'UNIX_TIMESTAMP',
);

$gis_from_text_functions = array(
	'GeomFromText',
	'GeomCollFromText',
	'LineFromText',
	'MLineFromText',
	'PointFromText',
	'MPointFromText',
	'PolyFromText',
	'MPolyFromText',
);

$gis_from_wkb_functions = array(
	'GeomFromWKB',
	'GeomCollFromWKB',
	'LineFromWKB',
	'MLineFromWKB',
	'PointFromWKB',
	'MPointFromWKB',
	'PolyFromWKB',
	'MPolyFromWKB',
);

// to create an object of PMA_File class
require_once './libraries/File.class.php';

//if some posted fields need to be transformed.
$mime_map = PMA_getMIME($GLOBALS['db'], $GLOBALS['table']);
if ($mime_map === false) {
	$mime_map = array();
}

$query_fields = array();
$insert_errors = array();
$row_skipped = false;
$unsaved_values = array();
foreach ($loop_array as $rownumber => $where_clause) {
	// skip fields to be ignored
	if (! $using_key && isset($_REQUEST['insert_ignore_' . $where_clause])) {
		continue;
	}

	// Defines the SET part of the sql query
	$query_values = array();

	// Map multi-edit keys to single-level arrays, dependent on how we got the fields
	$multi_edit_columns
		= isset($_REQUEST['fields']['multi_edit'][$rownumber])
		? $_REQUEST['fields']['multi_edit'][$rownumber]
		: array();
	$multi_edit_columns_name
		= isset($_REQUEST['fields_name']['multi_edit'][$rownumber])
		? $_REQUEST['fields_name']['multi_edit'][$rownumber]
		: null;
	$multi_edit_columns_prev
		= isset($_REQUEST['fields_prev']['multi_edit'][$rownumber])
		? $_REQUEST['fields_prev']['multi_edit'][$rownumber]
		: null;
	$multi_edit_funcs
		= isset($_REQUEST['funcs']['multi_edit'][$rownumber])
		? $_REQUEST['funcs']['multi_edit'][$rownumber]
		: null;
	$multi_edit_salt
		= isset($_REQUEST['salt']['multi_edit'][$rownumber])
		? $_REQUEST['salt']['multi_edit'][$rownumber]
		:null;
	$multi_edit_columns_type
		= isset($_REQUEST['fields_type']['multi_edit'][$rownumber])
		? $_REQUEST['fields_type']['multi_edit'][$rownumber]
		: null;
	$multi_edit_columns_null
		= isset($_REQUEST['fields_null']['multi_edit'][$rownumber])
		? $_REQUEST['fields_null']['multi_edit'][$rownumber]
		: null;
	$multi_edit_columns_null_prev
		= isset($_REQUEST['fields_null_prev']['multi_edit'][$rownumber])
		? $_REQUEST['fields_null_prev']['multi_edit'][$rownumber]
		: null;
	$multi_edit_auto_increment
		= isset($_REQUEST['auto_increment']['multi_edit'][$rownumber])
		? $_REQUEST['auto_increment']['multi_edit'][$rownumber]
		: null;

	// When a select field is nullified, it's not present in $_REQUEST
	// so initialize it; this way, the foreach($multi_edit_columns) will process it
	foreach ($multi_edit_columns_name as $key => $val) {
		if (! isset($multi_edit_columns[$key])) {
			$multi_edit_columns[$key] = '';
		}
	}

	// Iterate in the order of $multi_edit_columns_name,
	// not $multi_edit_columns, to avoid problems
	// when inserting multiple entries
	$insert_fail = false;
	foreach ($multi_edit_columns_name as $key => $column_name) {
		$current_value = $multi_edit_columns[$key];
		// Note: $key is an md5 of the fieldname. The actual fieldname is
		// available in $multi_edit_columns_name[$key]

		$file_to_insert = new PMA_File();
		$file_to_insert->checkTblChangeForm($key, $rownumber);

		$possibly_uploaded_val = $file_to_insert->getContent();
		if ($possibly_uploaded_val !== false) {
			$current_value = $possibly_uploaded_val;
		}
		// Apply Input Transformation if defined
		if (!empty($mime_map[$column_name])
			&& !empty($mime_map[$column_name]['input_transformation'])
		) {
			$filename = 'libraries/plugins/transformations/'
				. $mime_map[$column_name]['input_transformation'];
			if (is_file($filename)) {
				include_once $filename;
				$classname = PMA_getTransformationClassName(
					$mime_map[$column_name]['input_transformation']
				);
				$transformation_plugin = new $classname();
				$transformation_options = PMA_Transformation_getOptions(
					$mime_map[$column_name]['input_transformation_options']
				);
				$current_value = $transformation_plugin->applyTransformation(
					$current_value, $transformation_options
				);
				// check if transformation was successful or not
				// and accordingly set error messages & insert_fail
				if (method_exists($transformation_plugin, 'isSuccess')
					&& !$transformation_plugin->isSuccess()
				) {
					$insert_fail = true;
					$row_skipped = true;
					$insert_errors[] = sprintf(
						__('Row: %1$s, Column: %2$s, Error: %3$s'),
						$rownumber, $column_name,
						$transformation_plugin->getError()
					);
				}
			}
		}

		if ($file_to_insert->isError()) {
			$message .= $file_to_insert->getError();
		}
		// delete $file_to_insert temporary variable
		$file_to_insert->cleanUp();

		$current_value = PMA_getCurrentValueForDifferentTypes(
			$possibly_uploaded_val, $key, $multi_edit_columns_type,
			$current_value, $multi_edit_auto_increment,
			$rownumber, $multi_edit_columns_name, $multi_edit_columns_null,
			$multi_edit_columns_null_prev, $is_insert,
			$using_key, $where_clause, $table
		);

		$current_value_as_an_array = PMA_getCurrentValueAsAnArrayForMultipleEdit(
			$multi_edit_funcs,
			$multi_edit_salt, $gis_from_text_functions, $current_value,
			$gis_from_wkb_functions, $func_optional_param, $func_no_param, $key
		);

		list($query_values, $query_fields)
			= PMA_getQueryValuesForInsertAndUpdateInMultipleEdit(
				$multi_edit_columns_name, $multi_edit_columns_null, $current_value,
				$multi_edit_columns_prev, $multi_edit_funcs, $is_insert,
				$query_values, $query_fields, $current_value_as_an_array,
				$value_sets, $key, $multi_edit_columns_null_prev
			);
		if (isset($multi_edit_columns_null[$key])) {
			$multi_edit_columns[$key] = null;
		}
	} //end of foreach

	// temporarily store rows not inserted
	// so that they can be populated again.
	if ($insert_fail) {
		$unsaved_values[$rownumber] = $multi_edit_columns;
	}
	if (!$insert_fail && count($query_values) > 0) {
		if ($is_insert) {
			$value_sets[] = implode(', ', $query_values);
		} else {
			// build update query
			$query[] = 'UPDATE ' . PMA_Util::backquote($GLOBALS['db'])
				. '.' . PMA_Util::backquote($GLOBALS['table'])
				. ' SET ' . implode(', ', $query_values)
				. ' WHERE ' . $where_clause
				. ($_REQUEST['clause_is_unique'] ? '' : ' LIMIT 1');
		}
	}
} // end foreach ($loop_array as $where_clause)
unset($multi_edit_columns_name, $multi_edit_columns_prev, $multi_edit_funcs,
	$multi_edit_columns_type, $multi_edit_columns_null, $func_no_param,
	$multi_edit_auto_increment, $current_value_as_an_array, $key, $current_value,
	$loop_array, $where_clause, $using_key,	 $multi_edit_columns_null_prev,
	$insert_fail);

// Builds the sql query
if ($is_insert && count($value_sets) > 0) {
	$query = PMA_buildSqlQuery($is_insertignore, $query_fields, $value_sets);
} elseif (empty($query) && ! isset($_REQUEST['preview_sql']) && !$row_skipped) {
	// No change -> move back to the calling script
	//
	// Note: logic passes here for inline edit
	$message = PMA_Message::success(__('No change'));
	$active_page = $goto_include;
	include '' . PMA_securePath($goto_include);
	exit;
}
unset($multi_edit_columns, $is_insertignore);

// If there is a request for SQL previewing.
if (isset($_REQUEST['preview_sql'])) {
	PMA_previewSQL($query);
}

/**
 * Executes the sql query and get the result, then move back to the calling
 * page
 */
list ($url_params, $total_affected_rows, $last_messages, $warning_messages,
	$error_messages, $return_to_sql_query)
		= PMA_executeSqlQuery($url_params, $query);

if ($is_insert && (count($value_sets) > 0 || $row_skipped)) {
	$message = PMA_Message::getMessageForInsertedRows($total_affected_rows);
	$unsaved_values = array_values($unsaved_values);
} else {
	$message = PMA_Message::getMessageForAffectedRows($total_affected_rows);
}
if ($row_skipped) {
	$goto_include = 'tbl_change.php';
	$message->addMessages($insert_errors, '<br />');
	$message->isError(true);
}

$message->addMessages($last_messages, '<br />');

if (! empty($warning_messages)) {
	$message->addMessages($warning_messages, '<br />');
	$message->isError(true);
}
if (! empty($error_messages)) {
	$message->addMessages($error_messages);
	$message->isError(true);
}
unset(
	$error_messages, $warning_messages, $total_affected_rows,
	$last_messages, $last_message, $row_skipped, $insert_errors
);

/**
 * The following section only applies to grid editing.
 * However, verifying isAjax() is not enough to ensure we are coming from
 * grid editing. If we are coming from the Edit or Copy link in Browse mode,
 * ajax_page_request is present in the POST parameters.
 */
if ($response->isAjax() && ! isset($_POST['ajax_page_request'])) {
	/**
	 * If we are in grid editing, we need to process the relational and
	 * transformed fields, if they were edited. After that, output the correct
	 * link/transformed value and exit
	 *
	 * Logic taken from libraries/DisplayResults.class.php
	 */

	if (isset($_REQUEST['rel_fields_list']) && $_REQUEST['rel_fields_list'] != '') {

		$map = PMA_getForeigners($db, $table, '', 'both');

		$relation_fields = array();
		parse_str($_REQUEST['rel_fields_list'], $relation_fields);

		// loop for each relation cell
		/** @var array $relation_fields */
		foreach ($relation_fields as $cell_index => $curr_rel_field) {
			foreach ($curr_rel_field as $relation_field => $relation_field_value) {
				$where_comparison = "='" . $relation_field_value . "'";
				$dispval = PMA_getDisplayValueForForeignTableColumn(
					$where_comparison, $map, $relation_field
				);

				$extra_data['relations'][$cell_index]
					= PMA_getLinkForRelationalDisplayField(
						$map, $relation_field, $where_comparison,
						$dispval, $relation_field_value
					);
			}
		}	// end of loop for each relation cell
	}
	if (isset($_REQUEST['do_transformations'])
		&& $_REQUEST['do_transformations'] == true
	) {
		$edited_values = array();
		parse_str($_REQUEST['transform_fields_list'], $edited_values);

		if (! isset($extra_data)) {
			$extra_data = array();
		}
		$transformation_types = array(
			"input_transformation",
			"transformation"
		);
		foreach ($mime_map as $transformation) {
			$column_name = $transformation['column_name'];
			foreach ($transformation_types as $type) {
				$file = PMA_securePath($transformation[$type]);
				$extra_data = PMA_transformEditedValues(
					$db, $table, $transformation, $edited_values, $file,
					$column_name, $extra_data, $type
				);
			}
		}	// end of loop for each $mime_map
	}

	// Need to check the inline edited value can be truncated by MySQL
	// without informing while saving
	$column_name = $_REQUEST['fields_name']['multi_edit'][0][0];

	PMA_verifyWhetherValueCanBeTruncatedAndAppendExtraData(
		$db, $table, $column_name, $extra_data
	);

	/**Get the total row count of the table*/
	$extra_data['row_count'] = PMA_Table::countRecords(
		$_REQUEST['db'], $_REQUEST['table']
	);

	$extra_data['sql_query']
		= PMA_Util::getMessage($message, $GLOBALS['display_query']);

	$response = PMA_Response::getInstance();
	$response->isSuccess($message->isSuccess());
	$response->addJSON('message', $message);
	$response->addJSON($extra_data);
	exit;
}

if (! empty($return_to_sql_query)) {
	$disp_query = $GLOBALS['sql_query'];
	$disp_message = $message;
	unset($message);
	$GLOBALS['sql_query'] = $return_to_sql_query;
}

$scripts->addFile('tbl_change.js');
$scripts->addFile('big_ints.js');

$active_page = $goto_include;

/**
 * If user asked for "and then Insert another new row" we have to remove
 * WHERE clause information so that tbl_change.php does not go back
 * to the current record
 */
if (isset($_REQUEST['after_insert']) && 'new_insert' == $_REQUEST['after_insert']) {
	unset($_REQUEST['where_clause']);
}

/**
 * Load target page.
 */
require '' . PMA_securePath($goto_include);
exit;

?>
