<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Displays index edit/creation form and handles it
 *
 * @package PhpMyAdmin
 */

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

// Get fields and stores their name/type
$fields = array();
foreach (PMA_DBI_get_columns_full($db, $table) as $row) {
    if (preg_match('@^(set|enum)\((.+)\)$@i', $row['Type'], $tmp)) {
        $tmp[2] = substr(
            preg_replace('@([^,])\'\'@', '\\1\\\'', ',' . $tmp[2]), 1
        );
        $fields[$row['Field']] = $tmp[1] . '('
            . str_replace(',', ', ', $tmp[2]) . ')';
    } else {
        $fields[$row['Field']] = $row['Type'];
    }
} // end while

// Prepares the form values
if (isset($_REQUEST['index'])) {
    if (is_array($_REQUEST['index'])) {
        // coming already from form
        $index = new PMA_Index($_REQUEST['index']);
    } else {
        $index = PMA_Index::singleton($db, $table, $_REQUEST['index']);
    }
} else {
    $index = new PMA_Index;
}

/**
 * Process the data from the edit/create index form,
 * run the query to build the new index
 * and moves back to "tbl_sql.php"
 */
if (isset($_REQUEST['do_save_data'])) {
    $error = false;

    // $sql_query is the one displayed in the query box
    $sql_query = 'ALTER TABLE ' . PMA_Util::backquote($db)
        . '.' . PMA_Util::backquote($table);

    // Drops the old index
    if (! empty($_REQUEST['old_index'])) {
        if ($_REQUEST['old_index'] == 'PRIMARY') {
            $sql_query .= ' DROP PRIMARY KEY,';
        } else {
            $sql_query .= ' DROP INDEX '
                . PMA_Util::backquote($_REQUEST['old_index']) . ',';
        }
    } // end if

    // Builds the new one
    switch ($index->getType()) {
    case 'PRIMARY':
        if ($index->getName() == '') {
            $index->setName('PRIMARY');
        } elseif ($index->getName() != 'PRIMARY') {
            $error = PMA_Message::error(
                __('The name of the primary key must be "PRIMARY"!')
            );
        }
        $sql_query .= ' ADD PRIMARY KEY';
        break;
    case 'FULLTEXT':
    case 'UNIQUE':
    case 'INDEX':
    case 'SPATIAL':
        if ($index->getName() == 'PRIMARY') {
            $error = PMA_Message::error(__('Can\'t rename index to PRIMARY!'));
        }
        $sql_query .= ' ADD ' . $index->getType() . ' '
            . ($index->getName() ? PMA_Util::backquote($index->getName()) : '');
        break;
    } // end switch

    $index_fields = array();
    foreach ($index->getColumns() as $key => $column) {
        $index_fields[$key] = PMA_Util::backquote($column->getName());
        if ($column->getSubPart()) {
            $index_fields[$key] .= '(' . $column->getSubPart() . ')';
        }
    } // end while

    if (empty($index_fields)) {
        $error = PMA_Message::error(__('No index parts defined!'));
    } else {
        $sql_query .= ' (' . implode(', ', $index_fields) . ')';
    }

    $sql_query .= "COMMENT '" . PMA_Util::sqlAddSlashes($index->getComment()) . "'";
    $sql_query .= ';';

    if (! $error) {
        PMA_DBI_query($sql_query);
        $message = PMA_Message::success(
            __('Table %1$s has been altered successfully')
        );
        $message->addParam($table);

        if ($GLOBALS['is_ajax_request'] == true) {
            $response = PMA_Response::getInstance();
            $response->addJSON('message', $message);
            $response->addJSON('index_table', PMA_Index::getView($table, $db));
            $response->addJSON(
                'sql_query',
                PMA_Util::getMessage(null, $sql_query)
            );
        } else {
            $active_page = 'tbl_structure.php';
            include 'tbl_structure.php';
        }
        exit;
    } else {
        if ($GLOBALS['is_ajax_request'] == true) {
            $response = PMA_Response::getInstance();
            $response->isSuccess(false);
            $response->addJSON('message', $error);
            exit;
        } else {
            $error->display();
        }
    }
} // end builds the new index


/**
 * Display the form to edit/create an index
 */

// Displays headers (if needed)
$response = PMA_Response::getInstance();
$header   = $response->getHeader();
$scripts  = $header->getScripts();
$scripts->addFile('indexes.js');
require_once 'libraries/tbl_info.inc.php';

if (isset($_REQUEST['index']) && is_array($_REQUEST['index'])) {
    // coming already from form
    $add_fields
        = count($_REQUEST['index']['columns']['names']) - $index->getColumnCount();
    if (isset($_REQUEST['add_fields'])) {
        $add_fields += $_REQUEST['added_fields'];
    }
} elseif (isset($_REQUEST['create_index'])) {
    $add_fields = $_REQUEST['added_fields'];
} else {
    $add_fields = 1;
}

// end preparing form values
?>

<form action="tbl_indexes.php" method="post" name="index_frm" id="index_frm" class="ajax"
    onsubmit="if (typeof(this.elements['index[Key_name]'].disabled) != 'undefined') {
        this.elements['index[Key_name]'].disabled = false}">
<?php
$form_params = array(
    'db'    => $db,
    'table' => $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'];
}

echo PMA_generate_common_hidden_inputs($form_params);
?>
<fieldset id="index_edit_fields">
<?php
if ($GLOBALS['is_ajax_request'] != true) {
    ?>
    <legend>
    <?php
    if (isset($_REQUEST['create_index'])) {
        echo __('Add index');
    } else {
        echo __('Edit index');
    }
    ?>
    </legend>
    <?php
}
?>
<div class='index_info'>
    <div>
        <div class="label">
            <strong>
                <label for="input_index_name">
                    <?php echo __('Index name:'); ?>
                    <?php
echo PMA_Util::showHint(
    PMA_Message::notice(
        __(
            '("PRIMARY" <b>must</b> be the name of'
            . ' and <b>only of</b> a primary key!)'
        )
    )
);
                    ?>
                </label>
            </strong>
        </div>
        <input type="text" name="index[Key_name]" id="input_index_name" size="25"
            value="<?php echo htmlspecialchars($index->getName()); ?>"
            onfocus="this.select()" />
    </div>
    <div>
        <div class="label">
            <strong>
                <label for="input_index_comment">
                    <?php echo __('Comment:'); ?>
                </label>
            </strong>
        </div>
        <input type="text" name="index[Index_comment]" id="input_index_comment" size="30"
            value="<?php echo htmlspecialchars($index->getComment()); ?>"
            onfocus="this.select()" />
    </div>
    <div>
        <div class="label">
            <strong>
                <label for="select_index_type">
                    <?php echo __('Index type:'); ?>
                    <?php echo PMA_Util::showMySQLDocu('SQL-Syntax', 'ALTER_TABLE'); ?>
                </label>
            </strong>
        </div>
        <select name="index[Index_type]" id="select_index_type" >
            <?php echo $index->generateIndexSelector(); ?>
        </select>
    </div>
    <div class="clearfloat"></div>
</div>

<table id="index_columns">
<thead>
<tr><th><?php echo __('Column'); ?></th>
    <th><?php echo __('Size'); ?></th>
</tr>
</thead>
<tbody>
<?php
$odd_row = true;
$spatial_types = array(
    'geometry', 'point', 'linestring', 'polygon', 'multipoint',
    'multilinestring', 'multipolygon', 'geomtrycollection'
);
foreach ($index->getColumns() as $column) {
    ?>
    <tr class="<?php echo $odd_row ? 'odd' : 'even'; ?> noclick">
      <td>
        <select name="index[columns][names][]">
            <option value="">-- <?php echo __('Ignore'); ?> --</option>
    <?php
    foreach ($fields as $field_name => $field_type) {
        if (($index->getType() != 'FULLTEXT'
            || preg_match('/(char|text)/i', $field_type))
            && ($index->getType() != 'SPATIAL'
            || in_array($field_type, $spatial_types))
        ) {
            echo '<option value="' . htmlspecialchars($field_name) . '"'
                 . (($field_name == $column->getName())
                    ? ' selected="selected"'
                    : '') . '>'
                 . htmlspecialchars($field_name) . ' ['
                 . htmlspecialchars($field_type) . ']'
                 . '</option>' . "\n";
        }
    } // end foreach $fields
    ?>
        </select>
      </td>
      <td>
        <input type="text" size="5" onfocus="this.select()"
            name="index[columns][sub_parts][]"
            value="<?php
    if ($index->getType() != 'SPATIAL') {
        echo $column->getSubPart();
    }
      ?>"/>
      </td>
    </tr>
    <?php
    $odd_row = !$odd_row;
} // end foreach $edited_index_info['Sequences']
for ($i = 0; $i < $add_fields; $i++) {
    ?>
    <tr class="<?php echo $odd_row ? 'odd' : 'even'; ?> noclick">
      <td>
        <select name="index[columns][names][]">
            <option value="">-- <?php echo __('Ignore'); ?> --</option>
    <?php
    foreach ($fields as $field_name => $field_type) {
        echo '<option value="' . htmlspecialchars($field_name) . '">'
             . htmlspecialchars($field_name) . ' ['
             . htmlspecialchars($field_type) . ']'
             . '</option>' . "\n";
    } // end foreach $fields
    ?>
        </select>
      </td>
      <td>
        <input type="text" size="5" onfocus="this.select()"
            name="index[columns][sub_parts][]" value="" />
      </td>
    </tr>
    <?php
    $odd_row = !$odd_row;
} // end foreach $edited_index_info['Sequences']
?>
</tbody>
</table>
</fieldset>
<fieldset class="tblFooters">
<?php
if ($GLOBALS['is_ajax_request'] != true || ! empty($_REQUEST['ajax_page_request'])) {
    ?>
    <input type="submit" name="do_save_data" value="<?php echo __('Save'); ?>" />
    <span id="addMoreColumns">
    <?php
    echo __('Or') . ' ';
    printf(
        __('Add %s column(s) to index') . "\n",
        '<input type="text" name="added_fields" size="2" value="1" />'
    );
    echo '<input type="submit" name="add_fields" value="' . __('Go') . '" />' . "\n";
    ?>
    </span>
    <?php
} else {
    $btn_value = sprintf(__('Add %s column(s) to index'), 1);
    echo '<div class="slider"></div>';
    echo '<div class="add_fields">';
    echo '<input type="submit" value="' . $btn_value . '" />';
    echo '</div>';
}
?>
</fieldset>
</form>
