<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Handles DB Multi-table query
 *
 * @package PhpMyAdmin
 */
namespace PhpMyAdmin\Database;

use PhpMyAdmin\DatabaseInterface;
use PhpMyAdmin\Template;

/**
 * Class to handle database Multi-table querying
 *
 * @package PhpMyAdmin
 */
class MultiTableQuery
{
    /**
     * DatabaseInterface instance
     *
     * @access private
     * @var DatabaseInterface
     */
    private $dbi;

    /**
     * Database name
     *
     * @access private
     * @var string
     */
    private $db;

    /**
     * Default number of columns
     *
     * @access private
     * @var integer
     */
    private $defaultNoOfColumns;

    /**
     * Table names
     *
     * @access private
     * @var array
     */
    private $tables;

    /**
     * Constructor
     *
     * @param DatabaseInterface $dbi                DatabaseInterface instance
     * @param string            $dbName             Database name
     * @param integer           $defaultNoOfColumns Default number of columns
     */
    public function __construct(
        DatabaseInterface $dbi,
        $dbName,
        $defaultNoOfColumns = 3
    ) {
        $this->dbi = $dbi;
        $this->db = $dbName;
        $this->defaultNoOfColumns = $defaultNoOfColumns;

        $this->tables = $this->dbi->getTables($this->db);
    }

    /**
     * Get HTML for columns
     *
     * @return string HTML with columns
     */
    private function getColumnsHTML()
    {
        return Template::get('database/multi_table_query/columns')->render([
            'tables' => $this->tables,
            'dbi' => $this->dbi,
            'db' => $this->db,
            'default_no_of_columns' => $this->defaultNoOfColumns,
        ]);
    }

    /**
     * Get Multi Table Query page HTML
     *
     * @return string Multi Table Query page HTML
     */
    public function getFormHTML()
    {
        return Template::get('database/multi_table_query/form')->render([
            'db' => $this->db,
            'columns' => $this->getColumnsHTML(),
        ]);
    }
}