/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * @fileoverview    function used in table data manipulation pages
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @requires    js/functions.js
 *
 */

/**
 * Modify form controls when the "NULL" checkbox is checked
 *
 * @param theType     string   the MySQL field type
 * @param urlField    string   the urlencoded field name - OBSOLETE
 * @param md5Field    string   the md5 hashed field name
 * @param multi_edit  string   the multi_edit row sequence number
 *
 * @return boolean  always true
 */
function nullify(theType, urlField, md5Field, multi_edit)
{
    var rowForm = document.forms.insertForm;

    if (typeof(rowForm.elements['funcs' + multi_edit + '[' + md5Field + ']']) != 'undefined') {
        rowForm.elements['funcs' + multi_edit + '[' + md5Field + ']'].selectedIndex = -1;
    }

    // "ENUM" field with more than 20 characters
    if (theType == 1) {
        rowForm.elements['fields' + multi_edit + '[' + md5Field +  ']'][1].selectedIndex = -1;
    }
    // Other "ENUM" field
    else if (theType == 2) {
        var elts     = rowForm.elements['fields' + multi_edit + '[' + md5Field + ']'];
        // when there is just one option in ENUM:
        if (elts.checked) {
            elts.checked = false;
        } else {
            var elts_cnt = elts.length;
            for (var i = 0; i < elts_cnt; i++) {
                elts[i].checked = false;
            } // end for

        } // end if
    }
    // "SET" field
    else if (theType == 3) {
        rowForm.elements['fields' + multi_edit + '[' + md5Field +  '][]'].selectedIndex = -1;
    }
    // Foreign key field (drop-down)
    else if (theType == 4) {
        rowForm.elements['fields' + multi_edit + '[' + md5Field +  ']'].selectedIndex = -1;
    }
    // foreign key field (with browsing icon for foreign values)
    else if (theType == 6) {
        rowForm.elements['fields' + multi_edit + '[' + md5Field + ']'].value = '';
    }
    // Other field types
    else /*if (theType == 5)*/ {
        rowForm.elements['fields' + multi_edit + '[' + md5Field + ']'].value = '';
    } // end if... else if... else

    return true;
} // end of the 'nullify()' function


/**
 * javascript DateTime format validation.
 * its used to prevent adding default (0000-00-00 00:00:00) to database when user enter wrong values
 * Start of validation part
 */
//function checks the number of days in febuary
function daysInFebruary(year)
{
    return (((year % 4 === 0) && (((year % 100 !== 0)) || (year % 400 === 0))) ? 29 : 28);
}
//function to convert single digit to double digit
function fractionReplace(num)
{
    num = parseInt(num, 10);
    return num >= 1 && num <= 9 ? '0' + num : '00';
}

/* function to check the validity of date
* The following patterns are accepted in this validation (accepted in mysql as well)
* 1) 2001-12-23
* 2) 2001-1-2
* 3) 02-12-23
* 4) And instead of using '-' the following punctuations can be used (+,.,*,^,@,/) All these are accepted by mysql as well. Therefore no issues
*/
function isDate(val, tmstmp)
{
    val = val.replace(/[.|*|^|+|//|@]/g, '-');
    var arrayVal = val.split("-");
    for (var a = 0; a < arrayVal.length; a++) {
        if (arrayVal[a].length == 1) {
            arrayVal[a] = fractionReplace(arrayVal[a]);
        }
    }
    val = arrayVal.join("-");
    var pos = 2;
    var dtexp = new RegExp(/^([0-9]{4})-(((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(3[0-1])))|((02|04|06|09|11)-((0[1-9])|([1-2][0-9])|30)))$/);
    if (val.length == 8) {
        pos = 0;
    }
    if (dtexp.test(val)) {
        var month = parseInt(val.substring(pos + 3, pos + 5), 10);
        var day = parseInt(val.substring(pos + 6, pos + 8), 10);
        var year = parseInt(val.substring(0, pos + 2), 10);
        if (month == 2 && day > daysInFebruary(year)) {
            return false;
        }
        if (val.substring(0, pos + 2).length == 2) {
            year = parseInt("20" + val.substring(0, pos + 2), 10);
        }
        if (tmstmp === true) {
            if (year < 1978) {
                return false;
            }
            if (year > 2038 || (year > 2037 && day > 19 && month >= 1) || (year > 2037 && month > 1)) {
                return false;
            }
        }
    } else {
        return false;
    }
    return true;
}

/* function to check the validity of time
* The following patterns are accepted in this validation (accepted in mysql as well)
* 1) 2:3:4
* 2) 2:23:43
* 3) 2:23:43.123456
*/
function isTime(val)
{
    var arrayVal = val.split(":");
    for (var a = 0, l = arrayVal.length; a < l; a++) {
        if (arrayVal[a].length == 1) {
            arrayVal[a] = fractionReplace(arrayVal[a]);
        }
    }
    val = arrayVal.join(":");
    var tmexp = new RegExp(/^(([0-1][0-9])|(2[0-3])):((0[0-9])|([1-5][0-9])):((0[0-9])|([1-5][0-9]))(\.[0-9]{1,6}){0,1}$/);
    return tmexp.test(val);
}

/**
 * To check whether insert section is ignored or not
 */
function checkForCheckbox(multi_edit)
{
    if($("#insert_ignore_"+multi_edit).length) {
        return $("#insert_ignore_"+multi_edit).is(":unchecked");
    }
    return true;
}

function verificationsAfterFieldChange(urlField, multi_edit, theType)
{
    var evt = window.event || arguments.callee.caller.arguments[0];
    var target = evt.target || evt.srcElement;
    var $this_input = $("input[name='fields[multi_edit][" + multi_edit + "][" +
        urlField + "]']");
    // the function drop-down that corresponds to this input field
    var $this_function = $("select[name='funcs[multi_edit][" + multi_edit + "][" +
        urlField + "]']");
    var function_selected = false;
    if (typeof $this_function.val() !== 'undefined' && $this_function.val().length > 0) {
        function_selected = true;
    }

    // check if it is textarea rather than input
    if ($this_input.length === 0) {
        $this_input = $("textarea[name='fields[multi_edit][" + multi_edit + "][" +
            urlField + "]']");
    }

    //To generate the textbox that can take the salt
    var new_salt_box = "<br><input type=text name=salt[multi_edit][" + multi_edit + "][" + urlField + "]" +
        " id=salt_" + target.id + " placeholder='" + PMA_messages.strEncryptionKey + "'>";

    //If encrypting or decrypting functions that take salt as input is selected append the new textbox for salt
    if (target.value === 'AES_ENCRYPT' ||
            target.value === 'AES_DECRYPT' ||
            target.value === 'DES_ENCRYPT' ||
            target.value === 'DES_DECRYPT' ||
            target.value === 'ENCRYPT') {
        if (!($("#salt_" + target.id).length)) {
            $this_input.after(new_salt_box);
        }
    } else {
        //Remove the textbox for salt
        $('#salt_' + target.id).prev('br').remove();
        $("#salt_" + target.id).remove();
    }

    if (target.value === 'AES_DECRYPT'
            || target.value === 'AES_ENCRYPT'
            || target.value === 'MD5') {
        $('#' + target.id).rules("add", {
            validationFunctionForFuns: {
                param: $this_input,
                depends: function() {
                    return checkForCheckbox(multi_edit);
                }
            }
        });
    }

    var removeOnclick = 1;
    if ($("input[name='fields_null[multi_edit][" + multi_edit + "][" + urlField + "]']").length) {
        removeOnclick = 0;
    }
    // Unchecks the corresponding "NULL" control
    $("input[name='fields_null[multi_edit][" + multi_edit + "][" + urlField + "]']").prop('checked', false);

    // Unchecks the Ignore checkbox for the current row
    $("input[name='insert_ignore_" + multi_edit + "']").prop('checked', false);

    var charExceptionHandling;
    if (theType.substring(0,4) === "char") {
        charExceptionHandling = theType.substring(5,6);
    }
    else if (theType.substring(0,7) === "varchar") {
        charExceptionHandling = theType.substring(8,9);
    }
    if (function_selected) {
        $this_input.removeAttr('min');
        $this_input.removeAttr('max');
        // @todo: put back attributes if corresponding function is deselected
    }

    // explanation of the last condition:
    // if a function has been selected in the function drop-down,
    // do not validate the input field
    if (target.name && target.name.substring(0, 6) === "fields" && ! function_selected) {
        //call validate before adding rules
        $($this_input[0].form).validate();
        // validate for date time
        if (theType == "datetime" || theType == "time" || theType == "date" || theType == "timestamp") {
            $this_input.rules("add", {
                validationFunctionForDateTime: {
                    param: theType,
                    depends: function() {
                        return checkForCheckbox(multi_edit);
                    }
                }
            });
        }
        //validation for integer type
        if ($this_input.data('type') === 'INT') {
            var mini = parseInt($this_input.attr('min'));
            var maxi = parseInt($this_input.attr('max'));
            $this_input.rules("add", {
                number: {
                    param : true,
                    depends: function() {
                        return checkForCheckbox(multi_edit);
                    }
                },
                min: {
                    param: mini,
                    depends: function() {
                        if (isNaN($this_input.val())) {
                            return false;
                        } else {
                            return checkForCheckbox(multi_edit);
                        }
                    }
                },
                max: {
                    param: maxi,
                    depends: function() {
                        if (isNaN($this_input.val())) {
                            return false;
                        } else {
                            return checkForCheckbox(multi_edit);
                        }
                    }
                }
            });
            //validation for CHAR types
        } else if ($this_input.data('type') === 'CHAR') {
            var maxlen = $this_input.data('maxlength');
            if (typeof maxlen !== 'undefined') {
                if (maxlen <=4) {
                    maxlen=charExceptionHandling;
                }
                $this_input.rules("add", {
                    maxlength: {
                        param: maxlen,
                        depends: function() {
                            return checkForCheckbox(multi_edit);
                        }
                    }
                });
            }
            // validate binary & blob types
        } else if ($this_input.data('type') === 'HEX') {
            $this_input.rules("add", {
                validationFunctionForHex: {
                    param: true,
                    depends: function() {
                        return checkForCheckbox(multi_edit);
                    }
                }
            });
        }
        if (removeOnclick === 1) {
            $this_input.removeAttr('onchange');
        }
    }
}
/* End of fields validation*/

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('tbl_change.js', function () {
    $(document).off('click', 'span.open_gis_editor');
    $(document).off('click', "input[name^='insert_ignore_']");
    $(document).off('click', "input[name='gis_data[save]']");
    $(document).off('click', 'input.checkbox_null');
    $('select[name="submit_type"]').unbind('change');
    $(document).off('change', "#insert_rows");
});

/**
 * Ajax handlers for Change Table page
 *
 * Actions Ajaxified here:
 * Submit Data to be inserted into the table.
 * Restart insertion with 'N' rows.
 */
AJAX.registerOnload('tbl_change.js', function () {

    if($("#insertForm").length) {
        // validate the comment form when it is submitted
        $("#insertForm").validate();
        jQuery.validator.addMethod("validationFunctionForHex", function(value, element) {
            return value.match(/^[a-f0-9]*$/i) !== null;
        });

        jQuery.validator.addMethod("validationFunctionForFuns", function(value, element, options) {
            if (value.substring(0, 3) === "AES" && options.data('type') !== 'HEX') {
                return false;
            }

            return !(value.substring(0, 3) === "MD5"
            && typeof options.data('maxlength') !== 'undefined'
            && options.data('maxlength') < 32);
        });

        jQuery.validator.addMethod("validationFunctionForDateTime", function(value, element, options) {
            var dt_value = value;
            var theType = options;
            if (theType == "date") {
                return isDate(dt_value);

            } else if (theType == "time") {
                return isTime(dt_value);

            } else if (theType == "datetime" || theType == "timestamp") {
                var tmstmp = false;
                dt_value = dt_value.trim();
                if (dt_value == "CURRENT_TIMESTAMP") {
                    return true;
                }
                if (theType == "timestamp") {
                    tmstmp = true;
                }
                if (dt_value == "0000-00-00 00:00:00") {
                    return true;
                }
                var dv = dt_value.indexOf(" ");
                if (dv == -1) { // Only the date component, which is valid
                    return isDate(dt_value, tmstmp);
                }

                return isDate(dt_value.substring(0, dv), tmstmp)
                    && isTime(dt_value.substring(dv + 1));
            }
        });
        /*
         * message extending script must be run
         * after initiation of functions
         */
        extendingValidatorMessages();
    }

    $.datepicker.initialized = false;

    $(document).on('click', 'span.open_gis_editor', function (event) {
        event.preventDefault();

        var $span = $(this);
        // Current value
        var value = $span.parent('td').children("input[type='text']").val();
        // Field name
        var field = $span.parents('tr').children('td:first').find("input[type='hidden']").val();
        // Column type
        var type = $span.parents('tr').find('span.column_type').text();
        // Names of input field and null checkbox
        var input_name = $span.parent('td').children("input[type='text']").attr('name');
        //Token
        var token = $("input[name='token']").val();

        openGISEditor();
        if (!gisEditorLoaded) {
            loadJSAndGISEditor(value, field, type, input_name, token);
        } else {
            loadGISEditor(value, field, type, input_name, token);
        }
    });

    /**
     * Forced validation check of fields
     */
    $(document).on('click',"input[name^='insert_ignore_']", function (event) {
        $("#insertForm").valid();
    });

    /**
     * Uncheck the null checkbox as geometry data is placed on the input field
     */
    $(document).on('click', "input[name='gis_data[save]']", function (event) {
        var input_name = $('form#gis_data_editor_form').find("input[name='input_name']").val();
        var $null_checkbox = $("input[name='" + input_name + "']").parents('tr').find('.checkbox_null');
        $null_checkbox.prop('checked', false);
    });

    /**
     * Handles all current checkboxes for Null; this only takes care of the
     * checkboxes on currently displayed rows as the rows generated by
     * "Continue insertion" are handled in the "Continue insertion" code
     *
     */
    $(document).on('click', 'input.checkbox_null', function (e) {
        nullify(
            // use hidden fields populated by tbl_change.php
            $(this).siblings('.nullify_code').val(),
            $(this).closest('tr').find('input:hidden').first().val(),
            $(this).siblings('.hashed_field').val(),
            $(this).siblings('.multi_edit').val()
        );
    });

    /**
     * Reset the auto_increment column to 0 when selecting any of the
     * insert options in submit_type-dropdown. Only perform the reset
     * when we are in edit-mode, and not in insert-mode(no previous value
     * available).
     */
    $('select[name="submit_type"]').bind('change', function (e) {
        var thisElemSubmitTypeVal = $(this).val();
        var $table = $('table.insertRowTable');
        var auto_increment_column = $table.find('input[name^="auto_increment"]');
        auto_increment_column.each(function () {
            var $thisElemAIField = $(this);
            var thisElemName = $thisElemAIField.attr('name');

            var prev_value_field = $table.find('input[name="' + thisElemName.replace('auto_increment', 'fields_prev') + '"]');
            var value_field = $table.find('input[name="' + thisElemName.replace('auto_increment', 'fields') + '"]');
            var previous_value = $(prev_value_field).val();
            if (previous_value !== undefined) {
                if (thisElemSubmitTypeVal == 'insert'
                    || thisElemSubmitTypeVal == 'insertignore'
                    || thisElemSubmitTypeVal == 'showinsert'
                ) {
                    $(value_field).val(0);
                } else {
                    $(value_field).val(previous_value);
                }
            }
        });

    });

    /**
     * Continue Insertion form
     */
    $(document).on('change', "#insert_rows", function (event) {
        event.preventDefault();
        /**
         * @var columnCount   Number of number of columns table has.
         */
        var columnCount = $("table.insertRowTable:first").find("tr").has("input[name*='fields_name']").length;
        /**
         * @var curr_rows   Number of current insert rows already on page
         */
        var curr_rows = $("table.insertRowTable").length;
        /**
         * @var target_rows Number of rows the user wants
         */
        var target_rows = $("#insert_rows").val();

        // remove all datepickers
        $('input.datefield, input.datetimefield').each(function () {
            $(this).datepicker('destroy');
        });

        if (curr_rows < target_rows) {

            var tempIncrementIndex = function () {

                var $this_element = $(this);
                /**
                 * Extract the index from the name attribute for all input/select fields and increment it
                 * name is of format funcs[multi_edit][10][<long random string of alphanum chars>]
                 */

                /**
                 * @var this_name   String containing name of the input/select elements
                 */
                var this_name = $this_element.attr('name');
                /** split {@link this_name} at [10], so we have the parts that can be concatenated later */
                var name_parts = this_name.split(/\[\d+\]/);
                /** extract the [10] from  {@link name_parts} */
                var old_row_index_string = this_name.match(/\[\d+\]/)[0];
                /** extract 10 - had to split into two steps to accomodate double digits */
                var old_row_index = parseInt(old_row_index_string.match(/\d+/)[0], 10);

                /** calculate next index i.e. 11 */
                new_row_index = old_row_index + 1;
                /** generate the new name i.e. funcs[multi_edit][11][foobarbaz] */
                var new_name = name_parts[0] + '[' + new_row_index + ']' + name_parts[1];

                var hashed_field = name_parts[1].match(/\[(.+)\]/)[1];
                $this_element.attr('name', new_name);

                /** If element is select[name*='funcs'], update id */
                if ($this_element.is("select[name*='funcs']")) {
                    var this_id = $this_element.attr("id");
                    var id_parts = this_id.split(/\_/);
                    var old_id_index = id_parts[1];
                    var prevSelectedValue = $("#field_" + old_id_index + "_1").val();
                    var new_id_index = parseInt(old_id_index) + columnCount;
                    var new_id = 'field_' + new_id_index + '_1';
                    $this_element.attr('id', new_id);
                    $this_element.find("option").filter(function () {
                        return $(this).text() === prevSelectedValue;
                    }).attr("selected","selected");

                    // If salt field is there then update its id.
                    var nextSaltInput = $this_element.parent().next("td").next("td").find("input[name*='salt']");
                    if (nextSaltInput.length !== 0) {
                        nextSaltInput.attr("id", "salt_" + new_id);
                    }
                }

                // handle input text fields and textareas
                if ($this_element.is('.textfield') || $this_element.is('.char')) {
                    // do not remove the 'value' attribute for ENUM columns
                    if ($this_element.closest('tr').find('span.column_type').html() != 'enum') {
                        $this_element.val($this_element.closest('tr').find('span.default_value').html());
                    }
                    $this_element
                        .unbind('change')
                        // Remove onchange attribute that was placed
                        // by tbl_change.php; it refers to the wrong row index
                        .attr('onchange', null)
                        // Keep these values to be used when the element
                        // will change
                        .data('hashed_field', hashed_field)
                        .data('new_row_index', new_row_index)
                        .bind('change', function (e) {
                            var $changed_element = $(this);
                            verificationsAfterFieldChange(
                                $changed_element.data('hashed_field'),
                                $changed_element.data('new_row_index'),
                                $changed_element.closest('tr').find('span.column_type').html()
                            );
                        });
                }

                if ($this_element.is('.checkbox_null')) {
                    $this_element
                        // this event was bound earlier by jQuery but
                        // to the original row, not the cloned one, so unbind()
                        .unbind('click')
                        // Keep these values to be used when the element
                        // will be clicked
                        .data('hashed_field', hashed_field)
                        .data('new_row_index', new_row_index)
                        .bind('click', function (e) {
                            var $changed_element = $(this);
                            nullify(
                                $changed_element.siblings('.nullify_code').val(),
                                $this_element.closest('tr').find('input:hidden').first().val(),
                                $changed_element.data('hashed_field'),
                                '[multi_edit][' + $changed_element.data('new_row_index') + ']'
                            );
                        });
                }
            };

            var tempReplaceAnchor = function () {
                var $anchor = $(this);
                var new_value = 'rownumber=' + new_row_index;
                // needs improvement in case something else inside
                // the href contains this pattern
                var new_href = $anchor.attr('href').replace(/rownumber=\d+/, new_value);
                $anchor.attr('href', new_href);
            };

            while (curr_rows < target_rows) {

                /**
                 * @var $last_row    Object referring to the last row
                 */
                var $last_row = $("#insertForm").find(".insertRowTable:last");

                // need to access this at more than one level
                // (also needs improvement because it should be calculated
                //  just once per cloned row, not once per column)
                var new_row_index = 0;

                //Clone the insert tables
                $last_row
                .clone(true, true)
                .insertBefore("#actions_panel")
                .find('input[name*=multi_edit],select[name*=multi_edit],textarea[name*=multi_edit]')
                .each(tempIncrementIndex)
                .end()
                .find('.foreign_values_anchor')
                .each(tempReplaceAnchor);

                //Insert/Clone the ignore checkboxes
                if (curr_rows == 1) {
                    $('<input id="insert_ignore_1" type="checkbox" name="insert_ignore_1" checked="checked" />')
                    .insertBefore("table.insertRowTable:last")
                    .after('<label for="insert_ignore_1">' + PMA_messages.strIgnore + '</label>');
                } else {

                    /**
                     * @var $last_checkbox   Object reference to the last checkbox in #insertForm
                     */
                    var $last_checkbox = $("#insertForm").children('input:checkbox:last');

                    /** name of {@link $last_checkbox} */
                    var last_checkbox_name = $last_checkbox.attr('name');
                    /** index of {@link $last_checkbox} */
                    var last_checkbox_index = parseInt(last_checkbox_name.match(/\d+/), 10);
                    /** name of new {@link $last_checkbox} */
                    var new_name = last_checkbox_name.replace(/\d+/, last_checkbox_index + 1);

                    $('<br/><div class="clearfloat"></div>')
                    .insertBefore("table.insertRowTable:last");

                    $last_checkbox
                    .clone()
                    .attr({'id': new_name, 'name': new_name})
                    .prop('checked', true)
                    .insertBefore("table.insertRowTable:last");

                    $('label[for^=insert_ignore]:last')
                    .clone()
                    .attr('for', new_name)
                    .insertBefore("table.insertRowTable:last");

                    $('<br/>')
                    .insertBefore("table.insertRowTable:last");
                }
                curr_rows++;
            }
            // recompute tabindex for text fields and other controls at footer;
            // IMO it's not really important to handle the tabindex for
            // function and Null
            var tabindex = 0;
            $('.textfield, .char, textarea')
            .each(function () {
                tabindex++;
                $(this).attr('tabindex', tabindex);
                // update the IDs of textfields to ensure that they are unique
                $(this).attr('id', "field_" + tabindex + "_3");
            });
            $('.control_at_footer')
            .each(function () {
                tabindex++;
                $(this).attr('tabindex', tabindex);
            });
        } else if (curr_rows > target_rows) {
            while (curr_rows > target_rows) {
                $("input[id^=insert_ignore]:last")
                .nextUntil("fieldset")
                .addBack()
                .remove();
                curr_rows--;
            }
        }
        // Add all the required datepickers back
        addDateTimePicker();
    });
});

function changeValueFieldType(elem, searchIndex)
{
    var fieldsValue = $("select#fieldID_" + searchIndex);
    if (0 === fieldsValue.size()) {
        return;
    }

    var type = $(elem).val();
    if ('IN (...)' == type ||
        'NOT IN (...)' == type ||
        'BETWEEN' == type ||
        'NOT BETWEEN' == type
    ) {
        $("#fieldID_" + searchIndex).attr('multiple', '');
    } else {
        $("#fieldID_" + searchIndex).removeAttr('multiple');
    }
}