/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * @fileoverview    functions used on the server databases list page
 * @name            Server Databases
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @required    js/functions.js
 */

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('server_databases.js', function () {
    $(document).off('submit', "#dbStatsForm");
    $(document).off('submit', '#create_database_form.ajax');
    $('#filterText').unbind('keyup');
});

/**
 * AJAX scripts for server_databases.php
 *
 * Actions ajaxified here:
 * Drop Databases
 *
 */
AJAX.registerOnload('server_databases.js', function () {
    /**
     * Attach Event Handler for 'Drop Databases'
     */
    $(document).on('submit', "#dbStatsForm", function (event) {
        event.preventDefault();

        var $form = $(this);

        /**
         * @var selected_dbs Array containing the names of the checked databases
         */
        var selected_dbs = [];
        // loop over all checked checkboxes, except the .checkall_box checkbox
        $form.find('input:checkbox:checked:not(.checkall_box)').each(function () {
            $(this).closest('tr').addClass('removeMe');
            selected_dbs[selected_dbs.length] = 'DROP DATABASE `' + escapeHtml($(this).val()) + '`;';
        });
        if (! selected_dbs.length) {
            PMA_ajaxShowMessage(
                $('<div class="notice" />').text(
                    PMA_messages.strNoDatabasesSelected
                ),
                2000
            );
            return;
        }
        /**
         * @var question    String containing the question to be asked for confirmation
         */
        var question = PMA_messages.strDropDatabaseStrongWarning + ' ' +
            PMA_sprintf(PMA_messages.strDoYouReally, selected_dbs.join('<br />'));

        $(this).PMA_confirm(
            question,
            $form.prop('action') + '?' + $(this).serialize() +
                '&drop_selected_dbs=1&is_js_confirmed=1&ajax_request=true',
            function (url) {
                PMA_ajaxShowMessage(PMA_messages.strProcessingRequest, false);

                var params = getJSConfirmCommonParam(this);
                params.token = PMA_commonParams.get('token');

                $.post(url, params, function (data) {
                    if (typeof data !== 'undefined' && data.success === true) {
                        PMA_ajaxShowMessage(data.message);

                        var $rowsToRemove = $form.find('tr.removeMe');
                        var $databasesCount = $('#databases_count');
                        var newCount = parseInt($databasesCount.text(), 10) - $rowsToRemove.length;
                        $databasesCount.text(newCount);

                        $rowsToRemove.remove();
                        $form.find('tbody').PMA_sort_table('.name');
                        if ($form.find('tbody').find('tr').length === 0) {
                            // user just dropped the last db on this page
                            PMA_commonActions.refreshMain();
                        }
                        PMA_reloadNavigation();
                    } else {
                        $form.find('tr.removeMe').removeClass('removeMe');
                        PMA_ajaxShowMessage(data.error, false);
                    }
                }); // end $.post()
            }
        ); // end $.PMA_confirm()
    }); //end of Drop Database action

    /**
     * Attach Ajax event handlers for 'Create Database'.
     */
    $(document).on('submit', '#create_database_form.ajax', function (event) {
        event.preventDefault();

        var $form = $(this);

        // TODO Remove this section when all browsers support HTML5 "required" property
        var newDbNameInput = $form.find('input[name=new_db]');
        if (newDbNameInput.val() === '') {
            newDbNameInput.focus();
            alert(PMA_messages.strFormEmpty);
            return;
        }
        // end remove

        PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
        PMA_prepareForAjaxRequest($form);

        $.post($form.attr('action'), $form.serialize(), function (data) {
            if (typeof data !== 'undefined' && data.success === true) {
                PMA_ajaxShowMessage(data.message);

                var $databases_count_object = $('#databases_count');
                var databases_count = parseInt($databases_count_object.text(), 10) + 1;
                $databases_count_object.text(databases_count);
                PMA_reloadNavigation();

                // make ajax request to load db structure page - taken from ajax.js
                var dbStruct_url = data.url_query;
                dbStruct_url = dbStruct_url.replace(/amp;/ig, '');
                var params = 'ajax_request=true&ajax_page_request=true';
                if (! (history && history.pushState)) {
                    params += PMA_MicroHistory.menus.getRequestParam();
                }
                $.get(dbStruct_url, params, AJAX.responseHandler);
            } else {
                PMA_ajaxShowMessage(data.error, false);
            }
        }); // end $.post()
    }); // end $(document).on()

    /* Don't show filter if number of databases are very few */
    var databasesCount = $('#databases_count').html();
    if(databasesCount <= 10) {
        $('#tableFilter').hide();
    }

    var $filterField = $('#filterText');
    /* Event handler for database filter */
    $filterField.keyup(function (){
       var textFilter = null, val = $(this).val();
       if(val.length != 0) {
           try {
               textFilter = new RegExp(val.replace(/_/g, ' '), 'i');
               $(this).removeClass('error');
           } catch(e) {
               if (e instanceof SyntaxError) {
                   $(this).addClass('error');
                   textFilter = null;
               }
           }
       }
       filterVariables(textFilter);
    });

    /* Trigger filtering of the list based on incoming database name */
    if ($filterField.val()) {
        $filterField.trigger('keyup').select();
    }

    /* Filters the rows by the user given regexp */
    function filterVariables(textFilter) {
        var $row, databasesCount = 0;
        $('#tabledatabases').find('.db-row').each(function () {
            $row = $(this);
            if (textFilter === null ||
                textFilter.exec($row.find('.name').text())
               ) {
                   $row.css('display', '');
                   databasesCount += 1;
               } else {
                   $row.css('display', 'none');
               }
            $('#databases_count').html(databasesCount);
        });
    }
}); // end $()
