/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * @fileoverview    functions used on the database structure page
 * @name            Database Structure
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @required    js/functions.js
 */

/**
 * AJAX scripts for db_structure.php
 *
 * Actions ajaxified here:
 * Drop Database
 * Truncate Table
 * Drop Table
 *
 */

/**
 * Adjust number of rows and total size in the summary
 * when truncating, creating, dropping or inserting into a table
 */
function PMA_adjustTotals() {
    var byteUnits = new Array(
        PMA_messages['strB'],
        PMA_messages['strKiB'],
        PMA_messages['strMiB'],
        PMA_messages['strGiB'],
        PMA_messages['strTiB'],
        PMA_messages['strPiB'],
        PMA_messages['strEiB']
    );
    /**
     * @var $allTr jQuery object that references all the rows in the list of tables
     */
    var $allTr = $("#tablesForm table.data tbody:first tr");
    // New summary values for the table
    var tableSum = $allTr.size();
    var rowsSum = 0;
    var sizeSum = 0;
    var overheadSum = 0;
    var rowSumApproximated = false;

    $allTr.each(function () {
        var $this = $(this);
        // Get the number of rows for this SQL table
        var strRows = $this.find('.tbl_rows').text();
        // If the value is approximated
        if (strRows.indexOf('~') == 0) {
            rowSumApproximated = true;
            // The approximated value contains a preceding ~ and a following 2 (Eg 100 --> ~1002)
            strRows = strRows.substring(1, strRows.length - 1);
        }
        strRows = strRows.replace(/[,.]/g , '');
        var intRow = parseInt(strRows, 10);
        if (! isNaN(intRow)) {
            rowsSum += intRow;
        }
        // Extract the size and overhead
        var valSize         = 0;
        var valOverhead     = 0;
        var strSize         = $.trim($this.find('.tbl_size span:not(.unit)').text());
        var strSizeUnit     = $.trim($this.find('.tbl_size span.unit').text());
        var strOverhead     = $.trim($this.find('.tbl_overhead span:not(.unit)').text());
        var strOverheadUnit = $.trim($this.find('.tbl_overhead span.unit').text());
        // Given a value and a unit, such as 100 and KiB, for the table size
        // and overhead calculate their numeric values in bytes, such as 102400
        for (var i = 0; i < byteUnits.length; i++) {
            if (strSizeUnit == byteUnits[i]) {
                var tmpVal = parseFloat(strSize);
                valSize = tmpVal * Math.pow(1024, i);
                break;
            }
        }
        for (var i = 0; i < byteUnits.length; i++) {
            if (strOverheadUnit == byteUnits[i]) {
                var tmpVal = parseFloat(strOverhead);
                valOverhead = tmpVal * Math.pow(1024, i);
                break;
            }
        }
        sizeSum += valSize;
        overheadSum += valOverhead;
    });
    // Add some commas for readablility:
    // 1000000 becomes 1,000,000
    var strRowSum = rowsSum + "";
    var regex = /(\d+)(\d{3})/;
    while (regex.test(strRowSum)) {
        strRowSum = strRowSum.replace(regex, '$1' + ',' + '$2');
    }
    // If approximated total value add ~ in front
    if (rowSumApproximated) {
        strRowSum = "~" + strRowSum;
    }
    // Calculate the magnitude for the size and overhead values
    var size_magnitude = 0, overhead_magnitude = 0;
    while (sizeSum >= 1024) {
        sizeSum /= 1024;
        size_magnitude++;
    }
    while (overheadSum >= 1024) {
        overheadSum /= 1024;
        overhead_magnitude++;
    }

    sizeSum = Math.round(sizeSum * 10) / 10;
    overheadSum = Math.round(overheadSum * 10) / 10;

    // Update summary with new data
    var $summary = $("#tbl_summary_row");
    $summary.find('.tbl_num').text($.sprintf(PMA_messages['strTables'], tableSum));
    $summary.find('.tbl_rows').text(strRowSum);
    $summary.find('.tbl_size').text(sizeSum + " " + byteUnits[size_magnitude]);
    $summary.find('.tbl_overhead').text(overheadSum + " " + byteUnits[overhead_magnitude]);
}

$(function() {
    /**
     * Ajax Event handler for 'Insert Table'
     *
     * @see     $cfg['AjaxEnable']
     */
    var current_insert_table;
    $("td.insert_table a.ajax").live('click', function(event){
        event.preventDefault();
        current_insert_table = $(this);
        var $url = $(this).attr("href");
        if ($url.substring(0, 15) == "tbl_change.php?") {
            $url = $url.substring(15);
        }

        if ($("#insert_table_dialog").length > 0) {
            $("#insert_table_dialog").remove();
        }
           var $div = $('<div id="insert_table_dialog"></div>');
           var target = "tbl_change.php";

        /**
         * @var    button_options  Object that stores the options passed to jQueryUI
         *                          dialog
         */
        var button_options = {};
        // in the following function we need to use $(this)
        button_options[PMA_messages['strCancel']] = function() {
            $(this).dialog('close');
        };

        var button_options_error = {};
        button_options_error[PMA_messages['strOK']] = function() {
            $(this).dialog('close');
        };

        var $msgbox = PMA_ajaxShowMessage();

        $.get( target , $url+"&ajax_request=true" ,  function(data) {
            //in the case of an error, show the error message returned.
            if (data.success != undefined && data.success == false) {
                $div
                .append(data.error)
                .dialog({
                    title: PMA_messages['strInsertTable'],
                    height: 230,
                    width: 900,
                    modal: true,
                    open: PMA_verifyColumnsProperties,
                    close: function() {
                        $(this).remove();
                    },
                    buttons : button_options_error
                }); // end dialog options
            } else {
                var $dialog = $div
                    .append(data.message)
                    .dialog({
                        title: PMA_messages['strInsertTable'],
                        height: 600,
                        width: 900,
                        modal: true,
                        open: PMA_verifyColumnsProperties,
                        close: function() {
                            $(this).remove();
                        },
                        buttons : button_options
                    });// end dialog options
                //Remove the top menu container from the dialog
                $dialog.find("#topmenucontainer").hide();
                //Adding the datetime pikers for the dialog
                $dialog.find('.datefield, .datetimefield').each(function () {
                    PMA_addDatepicker($(this));
                });
                $("table.insertRowTable").addClass("ajax");
                $("#buttonYes").addClass("ajax");
                $div = $("#insert_table_dialog");
                PMA_showHints($div);
            }
            PMA_ajaxRemoveMessage($msgbox);
        }); // end $.get()

    });

    $("#insertForm .insertRowTable.ajax input[type=submit]").live('click', function(event) {
        event.preventDefault();
        /**
         * @var    the_form    object referring to the insert form
         */
        var $form = $("#insertForm");
        $("#result_query").remove();
        PMA_prepareForAjaxRequest($form);
        //User wants to submit the form
        $.post($form.attr('action'), $form.serialize() , function(data) {
            if(data.success == true) {
                PMA_ajaxShowMessage(data.message);
            } else {
                PMA_ajaxShowMessage(data.error, false);
            }
            if ($("#insert_table_dialog").length > 0) {
                $("#insert_table_dialog").dialog("close").remove();
            }
            /**Update the row count at the tableForm*/
            current_insert_table.closest('tr').find('.value.tbl_rows').html(data.row_count);
            PMA_adjustTotals();
        }); // end $.post()
    }); // end insert table button "Go"

    $("#buttonYes.ajax").live('click', function(event){
        event.preventDefault();
        /**
         * @var    the_form    object referring to the insert form
         */
        var $form = $("#insertForm");
        /**Get the submit type and the after insert type in the form*/
        var selected_submit_type = $("#insertForm").find("#actions_panel .control_at_footer option:selected").val();
        var selected_after_insert = $("#insertForm").find("#actions_panel select[name=after_insert] option:selected").val();
        $("#result_query").remove();
        PMA_prepareForAjaxRequest($form);
        //User wants to submit the form
        $.post($form.attr('action'), $form.serialize() , function(data) {
            if(data.success == true) {
                PMA_ajaxShowMessage(data.message);
                if (selected_submit_type == "showinsert") {
                    $(data.sql_query).insertAfter("#floating_menubar");
                    $("#result_query .notice").remove();
                    $("#result_query").prepend((data.message));
                }
                if (selected_after_insert == "new_insert") {
                    /**Trigger the insert dialog for new_insert option*/
                    current_insert_table.trigger('click');
                }

            } else {
                PMA_ajaxShowMessage(data.error, false);
            }
            if ($("#insert_table_dialog").length > 0) {
                $("#insert_table_dialog").dialog("close").remove();
            }
            /**Update the row count at the tableForm*/
            current_insert_table.closest('tr').find('.value.tbl_rows').html(data.row_count);
            PMA_adjustTotals();
        }); // end $.post()
    });

     /**
     * Event handler for 'Foreign Key Checks' disabling option
     * in the drop table confirmation form
     */
    $("span.fkc_switch").click(function(event){
       if ($("#fkc_checkbox").prop('checked')) {
           $("#fkc_checkbox").prop('checked', false);
           $("#fkc_status").html(PMA_messages['strForeignKeyCheckDisabled']);
           return;
       }
       $("#fkc_checkbox").prop('checked', true);
       $("#fkc_status").html(PMA_messages['strForeignKeyCheckEnabled']);
    });

    $('#fkc_checkbox').change(function () {
        if ($(this).prop("checked")) {
            $("#fkc_status").html(PMA_messages['strForeignKeyCheckEnabled']);
            return;
        }
        $("#fkc_status").html(PMA_messages['strForeignKeyCheckDisabled']);
    }); // End of event handler for 'Foreign Key Check'

    /**
     * Ajax Event handler for 'Truncate Table'
     *
     * @see     $cfg['AjaxEnable']
     */
    $("a.truncate_table_anchor").live('click', function(event) {
        event.preventDefault();

        /**
         * @var $this_anchor Object  referring to the anchor clicked
         */
        var $this_anchor = $(this);

        //extract current table name and build the question string
        /**
         * @var curr_table_name String containing the name of the table to be truncated
         */
        var curr_table_name = $this_anchor.parents('tr').children('th').children('a').text();
        /**
         * @var question    String containing the question to be asked for confirmation
         */
        var question =
            PMA_messages.strTruncateTableStrongWarning + ' '
            + $.sprintf(PMA_messages.strDoYouReally, 'TRUNCATE ' + curr_table_name);

        $this_anchor.PMA_confirm(question, $this_anchor.attr('href'), function(url) {

            PMA_ajaxShowMessage(PMA_messages['strProcessingRequest']);

            $.get(url, {'is_js_confirmed' : 1, 'ajax_request' : true}, function(data) {
                if (data.success == true) {
                    PMA_ajaxShowMessage(data.message);
                    // Adjust table statistics
                    var $tr = $this_anchor.closest('tr');
                    $tr.find('.tbl_rows').text('0');
                    $tr.find('.tbl_size, .tbl_overhead').text('-');
                    //Fetch inner span of this anchor
                    //and replace the icon with its disabled version
                    var span = $this_anchor.html().replace(/b_empty/, 'bd_empty');
                    //To disable further attempts to truncate the table,
                    //replace the a element with its inner span (modified)
                    $this_anchor
                        .replaceWith(span)
                        .removeClass('truncate_table_anchor');
                    PMA_adjustTotals();
                } else {
                    PMA_ajaxShowMessage(PMA_messages['strErrorProcessingRequest'] + " : " + data.error, false);
                }
            }); // end $.get()
        }); //end $.PMA_confirm()
    }); //end of Truncate Table Ajax action

    /**
     * Ajax Event handler for 'Drop Table' or 'Drop View'
     *
     * @see     $cfg['AjaxEnable']
     */
    $("a.drop_table_anchor").live('click', function(event) {
        event.preventDefault();

        var $this_anchor = $(this);

        //extract current table name and build the question string
        /**
         * @var $curr_row    Object containing reference to the current row
         */
        var $curr_row = $this_anchor.parents('tr');
        /**
         * @var curr_table_name String containing the name of the table to be truncated
         */
        var curr_table_name = $curr_row.children('th').children('a').text();
        /**
         * @var is_view Boolean telling if we have a view
         */
        var is_view = $curr_row.hasClass('is_view') || $this_anchor.hasClass('view');
        /**
         * @var question    String containing the question to be asked for confirmation
         */
        var question;
        if (! is_view) {
            question =
                PMA_messages.strDropTableStrongWarning + ' '
                + $.sprintf(PMA_messages.strDoYouReally, 'DROP TABLE ' + curr_table_name);
        } else {
            question =
                $.sprintf(PMA_messages.strDoYouReally, 'DROP VIEW ' + curr_table_name);
        }

        $this_anchor.PMA_confirm(question, $this_anchor.attr('href'), function(url) {

            PMA_ajaxShowMessage(PMA_messages['strProcessingRequest']);

            $.get(url, {'is_js_confirmed' : 1, 'ajax_request' : true}, function(data) {
                if (data.success == true) {
                    PMA_ajaxShowMessage(data.message);
                    toggleRowColors($curr_row.next());
                    $curr_row.hide("medium").remove();
                    PMA_adjustTotals();

                    if (window.parent && window.parent.frame_navigation) {
                        window.parent.frame_navigation.location.reload();
                    }
                } else {
                    PMA_ajaxShowMessage(PMA_messages['strErrorProcessingRequest'] + " : " + data.error, false);
                }
            }); // end $.get()
        }); // end $.PMA_confirm()
    }); //end of Drop Table Ajax action

    /**
     * Ajax Event handler for 'Drop tracking'
     *
     * @see     $cfg['AjaxEnable']
     */
    $('a.drop_tracking_anchor').live('click', function(event) {
        event.preventDefault();

        var $anchor = $(this);

        /**
         * @var curr_tracking_row   Object containing reference to the current tracked table's row
         */
        var $curr_tracking_row = $anchor.parents('tr');
         /**
         * @var question    String containing the question to be asked for confirmation
         */
        var question = PMA_messages['strDeleteTrackingData'];

        $anchor.PMA_confirm(question, $anchor.attr('href'), function(url) {

            PMA_ajaxShowMessage(PMA_messages['strDeletingTrackingData']);

            $.get(url, {'is_js_confirmed': 1, 'ajax_request': true}, function(data) {
                if(data.success == true) {
                    var $tracked_table = $curr_tracking_row.parents('table');
                    var table_name = $curr_tracking_row.find('td:nth-child(2)').text();

                    // Check how many rows will be left after we remove
                    if ($tracked_table.find('tbody tr').length === 1) {
                        // We are removing the only row it has
                        $('#tracked_tables').hide("slow").remove();
                    } else {
                        // There are more rows left after the deletion
                        toggleRowColors($curr_tracking_row.next());
                        $curr_tracking_row.hide("slow", function() {
                            $(this).remove();
                        });
                    }

                    // Make the removed table visible in the list of 'Untracked tables'.
                    $untracked_table = $('table#noversions');

                    // This won't work if no untracked tables are there.
                    if ($untracked_table.length > 0) {
                        var $rows = $untracked_table.find('tbody tr');

                        $rows.each(function(index) {
                            var $row = $(this);
                            var tmp_tbl_name = $row.find('td:first-child').text();
                            var is_last_iteration = (index == ($rows.length - 1));

                            if (tmp_tbl_name > table_name || is_last_iteration) {
                                var $cloned = $row.clone();

                                // Change the table name of the cloned row.
                                $cloned.find('td:first-child').text(table_name);

                                // Change the link of the cloned row.
                                var new_url = $cloned
                                    .find('td:nth-child(2) a')
                                    .attr('href')
                                    .replace('table=' + tmp_tbl_name, 'table=' + encodeURIComponent(table_name));
                                $cloned.find('td:nth-child(2) a').attr('href', new_url);

                                // Insert the cloned row in an appropriate location.
                                if (tmp_tbl_name > table_name) {
                                    $cloned.insertBefore($row);
                                    toggleRowColors($row);
                                    return false;
                                } else {
                                    $cloned.insertAfter($row);
                                    toggleRowColors($cloned);
                                }
                            }
                        });
                    }

                    PMA_ajaxShowMessage(data.message);
                } else {
                    PMA_ajaxShowMessage(PMA_messages['strErrorProcessingRequest'] + " : " + data.error, false);
                }
            }); // end $.get()
        }); // end $.PMA_confirm()
    }); //end Drop Tracking

    //Calculate Real End for InnoDB
    /**
     * Ajax Event handler for calculatig the real end for a InnoDB table
     *
     */
    $('#real_end_input').live('click', function(event) {
        event.preventDefault();

        /**
         * @var question    String containing the question to be asked for confirmation
         */
        var question = PMA_messages['strOperationTakesLongTime'];

        $(this).PMA_confirm(question, '', function() {
            return true;
        });
        return false;
    }); //end Calculate Real End for InnoDB

}, 'top.frame_content'); // end $()