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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * This module updates the UI during an asynchronous\n * backup or restore process.\n *\n * @module     backup/util/async_backup\n * @package    core\n * @copyright  2018 Matt Porritt <[email protected]>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n * @since      3.7\n */\ndefine(['jquery', 'core/ajax', 'core/str', 'core/notification', 'core/templates'],\n        function($, ajax, Str, notification, Templates) {\n\n    /**\n     * Module level constants.\n     *\n     * Using var instead of const as ES6 isn't fully supported yet.\n     */\n    var STATUS_EXECUTING = 800;\n    var STATUS_FINISHED_ERR = 900;\n    var STATUS_FINISHED_OK = 1000;\n\n    /**\n     * Module level variables.\n     */\n    var Asyncbackup = {};\n    var checkdelayoriginal = 15000; // This is the default time to use.\n    var checkdelay = 15000; // How often we should check for progress updates.\n    var checkdelaymultipler = 1.5; // If a request fails this multiplier will be used to increase the checkdelay value\n    var backupid; //  The backup id to get the progress for.\n    var contextid; //  The course this backup progress is for.\n    var restoreurl; //  The URL to view course restores.\n    var typeid; //  The type of operation backup or restore.\n    var backupintervalid; //  The id of the setInterval function.\n    var allbackupintervalid; //  The id of the setInterval function.\n    var timeout = 2000; // Timeout for ajax requests.\n\n    /**\n     * Helper function to update UI components.\n     *\n     * @param {string} backupid The id to match elements on.\n     * @param {number} percentage The completion percentage to apply.\n     */\n    function updateElement(backupid, percentage) {\n        var percentagewidth = Math.round(percentage) + '%';\n        var elementbar = $('#' + backupid + '_bar');\n        var percentagetext = percentage.toFixed(2) + '%';\n\n        // Set progress bar percentage indicators\n        elementbar.attr('aria-valuenow', percentagewidth);\n        elementbar.css('width', percentagewidth);\n        elementbar.text(percentagetext);\n    }\n\n    /**\n     * Updates the interval we use to check for backup progress.\n     *\n     * @param {Number} intervalid The id of the interval\n     * @param {Function} callback The function to use in setInterval\n     * @param {Number} value The specified interval (in milliseconds)\n     * @returns {Number}\n     */\n    function updateInterval(intervalid, callback, value) {\n        clearInterval(intervalid);\n        return setInterval(callback, value);\n    }\n\n    /**\n     * Update backup table row when an async backup completes.\n     *\n     * @param {string} backupid The id to match elements on.\n     */\n    function updateBackupTableRow(backupid) {\n        var statuscell = $('#' + backupid + '_bar').parent().parent();\n        var tablerow = statuscell.parent();\n        var cellsiblings = statuscell.siblings();\n        var timecell = cellsiblings[1];\n        var timevalue = $(timecell).text();\n        var filenamecell = cellsiblings[0];\n        var filename = $(filenamecell).text();\n\n        ajax.call([{\n            // Get the table data via webservice.\n            methodname: 'core_backup_get_async_backup_links_backup',\n            args: {\n                'filename': filename,\n                'contextid': contextid\n            },\n        }])[0].done(function(response) {\n            // We have the data now update the UI.\n            var context = {\n                    filename: filename,\n                    time: timevalue,\n                    size: response.filesize,\n                    fileurl: response.fileurl,\n                    restoreurl: response.restoreurl\n                    };\n\n            Templates.render('core/async_backup_progress_row', context).then(function(html, js) {\n                Templates.replaceNodeContents(tablerow, html, js);\n                return;\n            }).fail(function() {\n                notification.exception(new Error('Failed to load table row'));\n                return;\n            });\n        });\n    }\n\n    /**\n     * Update restore table row when an async restore completes.\n     *\n     * @param {string} backupid The id to match elements on.\n     */\n    function updateRestoreTableRow(backupid) {\n        var statuscell = $('#' + backupid + '_bar').parent().parent();\n        var tablerow = statuscell.parent();\n        var cellsiblings = statuscell.siblings();\n        var coursecell = cellsiblings[0];\n        var timecell = cellsiblings[1];\n        var timevalue = $(timecell).text();\n\n        ajax.call([{\n            // Get the table data via webservice.\n            methodname: 'core_backup_get_async_backup_links_restore',\n            args: {\n                'backupid': backupid,\n                'contextid': contextid\n            },\n        }])[0].done(function(response) {\n         // We have the data now update the UI.\n            var resourcename = $(coursecell).text();\n            var context = {\n                    resourcename: resourcename,\n                    restoreurl: response.restoreurl,\n                    time: timevalue\n                    };\n\n            Templates.render('core/async_restore_progress_row', context).then(function(html, js) {\n                Templates.replaceNodeContents(tablerow, html, js);\n                return;\n            }).fail(function() {\n                notification.exception(new Error('Failed to load table row'));\n                return;\n            });\n        });\n    }\n\n    /**\n     * Update the Moodle user interface with the progress of\n     * the backup process.\n     *\n     * @param {object} progress The progress and status of the process.\n     */\n    function updateProgress(progress) {\n        var percentage = progress.progress * 100;\n        var elementbar = $('#' + backupid + '_bar');\n        var elementstatus = $('#' + backupid + '_status');\n        var elementdetail = $('#' + backupid + '_detail');\n        var elementbutton = $('#' + backupid + '_button');\n        var stringRequests;\n\n        if (progress.status == STATUS_EXECUTING) {\n            // Process is in progress.\n            // Add in progress class color to bar\n            elementbar.addClass('bg-success');\n\n            updateElement(backupid, percentage);\n\n            // Change heading\n            var strProcessing = 'async' + typeid + 'processing';\n            Str.get_string(strProcessing, 'backup').then(function(title) {\n                elementstatus.text(title);\n                return title;\n            }).catch(function() {\n                notification.exception(new Error('Failed to load string: backup ' + strProcessing));\n            });\n\n        } else if (progress.status == STATUS_FINISHED_ERR) {\n            // Process completed with error.\n\n            // Add in fail class color to bar\n            elementbar.addClass('bg-danger');\n\n            // Remove in progress class color to bar\n            elementbar.removeClass('bg-success');\n\n            updateElement(backupid, 100);\n\n            // Change heading and text\n            var strStatus = 'async' + typeid + 'error';\n            var strStatusDetail = 'async' + typeid + 'errordetail';\n            stringRequests = [\n                {key: strStatus, component: 'backup'},\n                {key: strStatusDetail, component: 'backup'}\n            ];\n            Str.get_strings(stringRequests).then(function(strings) {\n                elementstatus.text(strings[0]);\n                elementdetail.text(strings[1]);\n\n                return strings;\n            })\n            .catch(function() {\n                notification.exception(new Error('Failed to load string'));\n                return;\n            });\n\n            $('.backup_progress').children('span').removeClass('backup_stage_current');\n            $('.backup_progress').children('span').last().addClass('backup_stage_current');\n\n            // Stop checking when we either have an error or a completion.\n            clearInterval(backupintervalid);\n\n        } else if (progress.status == STATUS_FINISHED_OK) {\n            // Process completed successfully.\n\n            // Add in progress class color to bar\n            elementbar.addClass('bg-success');\n\n            updateElement(backupid, 100);\n\n            // Change heading and text\n            var strComplete = 'async' + typeid + 'complete';\n            Str.get_string(strComplete, 'backup').then(function(title) {\n                elementstatus.text(title);\n                return title;\n            }).catch(function() {\n                notification.exception(new Error('Failed to load string: backup ' + strComplete));\n            });\n\n            if (typeid == 'restore') {\n                ajax.call([{\n                    // Get the table data via webservice.\n                    methodname: 'core_backup_get_async_backup_links_restore',\n                    args: {\n                        'backupid': backupid,\n                        'contextid': contextid\n                    },\n                }])[0].done(function(response) {\n                    var strDetail = 'async' + typeid + 'completedetail';\n                    var strButton = 'async' + typeid + 'completebutton';\n                    var stringRequests = [\n                        {key: strDetail, component: 'backup', param: response.restoreurl},\n                        {key: strButton, component: 'backup'}\n                    ];\n                    Str.get_strings(stringRequests).then(function(strings) {\n                        elementdetail.html(strings[0]);\n                        elementbutton.text(strings[1]);\n                        elementbutton.attr('href', response.restoreurl);\n\n                        return strings;\n                    })\n                    .catch(function() {\n                        notification.exception(new Error('Failed to load string'));\n                        return;\n                    });\n\n                });\n            } else {\n                var strDetail = 'async' + typeid + 'completedetail';\n                var strButton = 'async' + typeid + 'completebutton';\n                stringRequests = [\n                    {key: strDetail, component: 'backup', param: restoreurl},\n                    {key: strButton, component: 'backup'}\n                ];\n                Str.get_strings(stringRequests).then(function(strings) {\n                    elementdetail.html(strings[0]);\n                    elementbutton.text(strings[1]);\n                    elementbutton.attr('href', restoreurl);\n\n                    return strings;\n                })\n                .catch(function() {\n                    notification.exception(new Error('Failed to load string'));\n                    return;\n                });\n\n            }\n\n            $('.backup_progress').children('span').removeClass('backup_stage_current');\n            $('.backup_progress').children('span').last().addClass('backup_stage_current');\n\n            // Stop checking when we either have an error or a completion.\n            clearInterval(backupintervalid);\n        }\n    }\n\n    /**\n     * Update the Moodle user interface with the progress of\n     * all the pending processes.\n     *\n     * @param {object} progress The progress and status of the process.\n     */\n    function updateProgressAll(progress) {\n        progress.forEach(function(element) {\n            var percentage = element.progress * 100;\n            var backupid = element.backupid;\n            var elementbar = $('#' + backupid + '_bar');\n            var type = element.operation;\n\n            if (element.status == STATUS_EXECUTING) {\n                // Process is in element.\n\n                // Add in element class color to bar\n                elementbar.addClass('bg-success');\n\n                updateElement(backupid, percentage);\n\n            } else if (element.status == STATUS_FINISHED_ERR) {\n                // Process completed with error.\n\n                // Add in fail class color to bar\n                elementbar.addClass('bg-danger');\n                elementbar.addClass('complete');\n\n                // Remove in element class color to bar\n                $('#' + backupid + '_bar').removeClass('bg-success');\n\n                updateElement(backupid, 100);\n\n            } else if (element.status == STATUS_FINISHED_OK) {\n                // Process completed successfully.\n\n                // Add in element class color to bar\n                elementbar.addClass('bg-success');\n                elementbar.addClass('complete');\n\n                updateElement(backupid, 100);\n\n                // We have a successful backup. Update the UI with download and file details.\n                if (type == 'backup') {\n                    updateBackupTableRow(backupid);\n                } else {\n                    updateRestoreTableRow(backupid);\n                }\n\n            }\n\n        });\n    }\n\n    /**\n     * Get the progress of the backup process via ajax.\n     */\n    function getBackupProgress() {\n        ajax.call([{\n            // Get the backup progress via webservice.\n            methodname: 'core_backup_get_async_backup_progress',\n            args: {\n                'backupids': [backupid],\n                'contextid': contextid\n            },\n        }], true, true, false, timeout)[0].done(function(response) {\n            // We have the progress now update the UI.\n            updateProgress(response[0]);\n            checkdelay = checkdelayoriginal;\n            backupintervalid = updateInterval(backupintervalid, getBackupProgress, checkdelayoriginal);\n        }).fail(function() {\n            checkdelay = checkdelay * checkdelaymultipler;\n            backupintervalid = updateInterval(backupintervalid, getBackupProgress, checkdelay);\n        });\n    }\n\n    /**\n     * Get the progress of all backup processes via ajax.\n     */\n    function getAllBackupProgress() {\n        var backupids = [];\n        var progressbars = $('.progress').find('.progress-bar').not('.complete');\n\n        progressbars.each(function() {\n            backupids.push((this.id).substring(0, 32));\n        });\n\n        if (backupids.length > 0) {\n            ajax.call([{\n                // Get the backup progress via webservice.\n                methodname: 'core_backup_get_async_backup_progress',\n                args: {\n                    'backupids': backupids,\n                    'contextid': contextid\n                },\n            }], true, true, false, timeout)[0].done(function(response) {\n                updateProgressAll(response);\n                checkdelay = checkdelayoriginal;\n                allbackupintervalid = updateInterval(allbackupintervalid, getAllBackupProgress, checkdelayoriginal);\n            }).fail(function() {\n                checkdelay = checkdelay * checkdelaymultipler;\n                allbackupintervalid = updateInterval(allbackupintervalid, getAllBackupProgress, checkdelay);\n            });\n        } else {\n            clearInterval(allbackupintervalid); // No more progress bars to update, stop checking.\n        }\n    }\n\n    /**\n     * Get status updates for all backups.\n     *\n     * @public\n     * @param {number} context The context id.\n     */\n    Asyncbackup.asyncBackupAllStatus = function(context) {\n        contextid = context;\n        allbackupintervalid = setInterval(getAllBackupProgress, checkdelay);\n    };\n\n    /**\n     * Get status updates for backup.\n     *\n     * @public\n     * @param {string} backup The backup record id.\n     * @param {number} context The context id.\n     * @param {string} restore The restore link.\n     * @param {string} type The operation type (backup or restore).\n     */\n    Asyncbackup.asyncBackupStatus = function(backup, context, restore, type) {\n        backupid = backup;\n        contextid = context;\n        restoreurl = restore;\n\n        if (type == 'backup') {\n            typeid = 'backup';\n        } else {\n            typeid = 'restore';\n        }\n\n        // Remove the links from the progress bar, no going back now.\n        $('.backup_progress').children('a').removeAttr('href');\n\n        //  Periodically check for progress updates and update the UI as required.\n        backupintervalid = setInterval(getBackupProgress, checkdelay);\n\n      };\n\n      return Asyncbackup;\n});\n"],"file":"async_backup.min.js"}