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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Holds the PhpMyAdmin\Controllers\Table\TableIndexesController
 *
 * @package PhpMyAdmin\Controllers
 */
namespace PhpMyAdmin\Controllers\Table;

use PhpMyAdmin\Controllers\TableController;
use PhpMyAdmin\Index;
use PhpMyAdmin\Message;
use PhpMyAdmin\Response;
use PhpMyAdmin\Template;
use PhpMyAdmin\Util;

/**
 * Class TableIndexesController
 *
 * @package PhpMyAdmin\Controllers
 */
class TableIndexesController extends TableController
{
    /**
     * @var Index $index
     */
    protected $index;

    /**
     * Constructor
     *
     * @param Index $index Index
     */
    public function __construct(
        $response,
        $dbi,
        $db,
        $table,
        $index
    ) {
        parent::__construct($response, $dbi, $db, $table);

        $this->index = $index;
    }

    /**
     * Index
     *
     * @return void
     */
    public function indexAction()
    {
        if (isset($_REQUEST['do_save_data'])) {
            $this->doSaveDataAction();
            return;
        } // end builds the new index

        $this->displayFormAction();
    }

    /**
     * Display the form to edit/create an index
     *
     * @return void
     */
    public function displayFormAction()
    {
        $GLOBALS['dbi']->selectDb($GLOBALS['db']);
        $add_fields = 0;
        if (isset($_REQUEST['index']) && is_array($_REQUEST['index'])) {
            // coming already from form
            if (isset($_REQUEST['index']['columns']['names'])) {
                $add_fields = count($_REQUEST['index']['columns']['names'])
                    - $this->index->getColumnCount();
            }
            if (isset($_REQUEST['add_fields'])) {
                $add_fields += $_REQUEST['added_fields'];
            }
        } elseif (isset($_REQUEST['create_index'])) {
            $add_fields = $_REQUEST['added_fields'];
        } // end preparing form values

        // Get fields and stores their name/type
        if (isset($_REQUEST['create_edit_table'])) {
            $fields = json_decode($_REQUEST['columns'], true);
            $index_params = array(
                'Non_unique' => ($_REQUEST['index']['Index_choice'] == 'UNIQUE')
                    ? '0' : '1',
            );
            $this->index->set($index_params);
            $add_fields = count($fields);
        } else {
            $fields = $this->dbi->getTable($this->db, $this->table)
                ->getNameAndTypeOfTheColumns();
        }

        $form_params = array(
            'db' => $this->db,
            'table' => $this->table,
        );

        if (isset($_REQUEST['create_index'])) {
            $form_params['create_index'] = 1;
        } elseif (isset($_REQUEST['old_index'])) {
            $form_params['old_index'] = $_REQUEST['old_index'];
        } elseif (isset($_REQUEST['index'])) {
            $form_params['old_index'] = $_REQUEST['index'];
        }

        $this->response->getHeader()->getScripts()->addFile('indexes.js');

        $this->response->addHTML(
            Template::get('table/index_form')->render(
                array(
                    'fields' => $fields,
                    'index' => $this->index,
                    'form_params' => $form_params,
                    'add_fields' => $add_fields,
                    'create_edit_table' => isset($_REQUEST['create_edit_table'])
                )
            )
        );
    }

    /**
     * Process the data from the edit/create index form,
     * run the query to build the new index
     * and moves back to "tbl_sql.php"
     *
     * @return void
     */
    public function doSaveDataAction()
    {
        $error = false;

        $sql_query = $this->dbi->getTable($this->db, $this->table)
            ->getSqlQueryForIndexCreateOrEdit($this->index, $error);

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

            $this->response->addJSON(
                'sql_data',
                Template::get('preview_sql')
                    ->render(
                        array(
                            'query_data' => $sql_query
                        )
                    )
            );
        } elseif (!$error) {

            $this->dbi->query($sql_query);
            $response = Response::getInstance();
            if ($response->isAjax()) {
                $message = Message::success(
                    __('Table %1$s has been altered successfully.')
                );
                $message->addParam($this->table);
                $this->response->addJSON(
                    'message', Util::getMessage($message, $sql_query, 'success')
                );
                $this->response->addJSON(
                    'index_table',
                    Index::getHtmlForIndexes(
                        $this->table, $this->db
                    )
                );
            } else {
                include 'tbl_structure.php';
            }
        } else {
            $this->response->setRequestStatus(false);
            $this->response->addJSON('message', $error);
        }
    }
}