| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  | <!DOCTYPE html> | 
					
						
							|  |  |  | <html lang="en"> | 
					
						
							|  |  |  | <head> | 
					
						
							|  |  |  |     <meta charset="utf-8"> | 
					
						
							|  |  |  |     <title>JSDoc: Source: becca/entities/note_revision.js</title> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     <script src="scripts/prettify/prettify.js"> </script> | 
					
						
							|  |  |  |     <script src="scripts/prettify/lang-css.js"> </script> | 
					
						
							|  |  |  |     <!--[if lt IE 9]>
 | 
					
						
							|  |  |  |       <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> | 
					
						
							|  |  |  |     <![endif]--> | 
					
						
							|  |  |  |     <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> | 
					
						
							|  |  |  |     <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> | 
					
						
							|  |  |  | </head> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <body> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <div id="main"> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     <h1 class="page-title">Source: becca/entities/note_revision.js</h1> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |      | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |      | 
					
						
							|  |  |  |     <section> | 
					
						
							|  |  |  |         <article> | 
					
						
							|  |  |  |             <pre class="prettyprint source linenums"><code>"use strict"; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | const protectedSessionService = require('../../services/protected_session'); | 
					
						
							|  |  |  | const utils = require('../../services/utils'); | 
					
						
							|  |  |  | const sql = require('../../services/sql'); | 
					
						
							|  |  |  | const dateUtils = require('../../services/date_utils'); | 
					
						
							| 
									
										
										
										
											2022-01-10 19:54:38 +01:00
										 |  |  | const becca = require('../becca'); | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  | const entityChangesService = require('../../services/entity_changes'); | 
					
						
							| 
									
										
										
										
											2022-01-10 19:54:38 +01:00
										 |  |  | const AbstractEntity = require("./abstract_entity"); | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  | 
 | 
					
						
							|  |  |  | /** | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |  * NoteRevision represents snapshot of note's title and content at some point in the past. | 
					
						
							|  |  |  |  * It's used for seamless note versioning. | 
					
						
							| 
									
										
										
										
											2022-04-16 00:17:32 +02:00
										 |  |  |  * | 
					
						
							|  |  |  |  * @extends AbstractEntity | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |  */ | 
					
						
							|  |  |  | class NoteRevision extends AbstractEntity { | 
					
						
							|  |  |  |     static get entityName() { return "note_revisions"; } | 
					
						
							|  |  |  |     static get primaryKeyName() { return "noteRevisionId"; } | 
					
						
							|  |  |  |     static get hashedProperties() { return ["noteRevisionId", "noteId", "title", "isProtected", "dateLastEdited", "dateCreated", "utcDateLastEdited", "utcDateCreated", "utcDateModified"]; } | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2022-07-11 23:15:16 +02:00
										 |  |  |     constructor(row, titleDecrypted = false) { | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         super(); | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.noteRevisionId = row.noteRevisionId; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.noteId = row.noteId; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.type = row.type; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.mime = row.mime; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {boolean} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.isProtected = !!row.isProtected; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.title = row.title; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.dateLastEdited = row.dateLastEdited; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.dateCreated = row.dateCreated; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.utcDateLastEdited = row.utcDateLastEdited; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.utcDateCreated = row.utcDateCreated; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {string} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.utcDateModified = row.utcDateModified; | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         /** @type {number} */ | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         this.contentLength = row.contentLength; | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2022-07-11 23:15:16 +02:00
										 |  |  |         if (this.isProtected && !titleDecrypted) { | 
					
						
							|  |  |  |             this.title = protectedSessionService.isProtectedSessionAvailable() | 
					
						
							|  |  |  |                 ? protectedSessionService.decryptString(this.title) | 
					
						
							|  |  |  |                 : "[protected]"; | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         } | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     getNote() { | 
					
						
							|  |  |  |         return becca.notes[this.noteId]; | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     /** @returns {boolean} true if the note has string content (not binary) */ | 
					
						
							|  |  |  |     isStringNote() { | 
					
						
							|  |  |  |         return utils.isStringNote(this.type, this.mime); | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     /* | 
					
						
							|  |  |  |      * Note revision content has quite special handling - it's not a separate entity, but a lazily loaded | 
					
						
							| 
									
										
										
										
											2022-07-11 23:15:16 +02:00
										 |  |  |      * part of NoteRevision entity with its own sync. Reason behind this hybrid design is that | 
					
						
							|  |  |  |      * content can be quite large, and it's not necessary to load it / fill memory for any note access even | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |      * if we don't need a content, especially for bulk operations like search. | 
					
						
							|  |  |  |      * | 
					
						
							|  |  |  |      * This is the same approach as is used for Note's content. | 
					
						
							|  |  |  |      */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     /** @returns {*} */ | 
					
						
							|  |  |  |     getContent(silentNotFoundError = false) { | 
					
						
							|  |  |  |         const res = sql.getRow(`SELECT content FROM note_revision_contents WHERE noteRevisionId = ?`, [this.noteRevisionId]); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         if (!res) { | 
					
						
							|  |  |  |             if (silentNotFoundError) { | 
					
						
							|  |  |  |                 return undefined; | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |             else { | 
					
						
							|  |  |  |                 throw new Error("Cannot find note revision content for noteRevisionId=" + this.noteRevisionId); | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         let content = res.content; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         if (this.isProtected) { | 
					
						
							|  |  |  |             if (protectedSessionService.isProtectedSessionAvailable()) { | 
					
						
							|  |  |  |                 content = protectedSessionService.decrypt(content); | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |             else { | 
					
						
							|  |  |  |                 content = ""; | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         if (this.isStringNote()) { | 
					
						
							|  |  |  |             return content === null | 
					
						
							|  |  |  |                 ? "" | 
					
						
							|  |  |  |                 : content.toString("UTF-8"); | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  |         else { | 
					
						
							|  |  |  |             return content; | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     setContent(content, ignoreMissingProtectedSession = false) { | 
					
						
							|  |  |  |         const pojo = { | 
					
						
							|  |  |  |             noteRevisionId: this.noteRevisionId, | 
					
						
							|  |  |  |             content: content, | 
					
						
							|  |  |  |             utcDateModified: dateUtils.utcNowDateTime() | 
					
						
							|  |  |  |         }; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         if (this.isProtected) { | 
					
						
							|  |  |  |             if (protectedSessionService.isProtectedSessionAvailable()) { | 
					
						
							|  |  |  |                 pojo.content = protectedSessionService.encrypt(pojo.content); | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |             else if (!ignoreMissingProtectedSession) { | 
					
						
							|  |  |  |                 throw new Error(`Cannot update content of noteRevisionId=${this.noteRevisionId} since we're out of protected session.`); | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         sql.upsert("note_revision_contents", "noteRevisionId", pojo); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         const hash = utils.hash(this.noteRevisionId + "|" + pojo.content.toString()); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         entityChangesService.addEntityChange({ | 
					
						
							|  |  |  |             entityName: 'note_revision_contents', | 
					
						
							|  |  |  |             entityId: this.noteRevisionId, | 
					
						
							|  |  |  |             hash: hash, | 
					
						
							|  |  |  |             isErased: false, | 
					
						
							|  |  |  |             utcDateChanged: this.getUtcDateChanged(), | 
					
						
							|  |  |  |             isSynced: true | 
					
						
							|  |  |  |         }); | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     /** @returns {{contentLength, dateModified, utcDateModified}} */ | 
					
						
							|  |  |  |     getContentMetadata() { | 
					
						
							|  |  |  |         return sql.getRow(` | 
					
						
							|  |  |  |             SELECT  | 
					
						
							|  |  |  |                 LENGTH(content) AS contentLength,  | 
					
						
							|  |  |  |                 dateModified, | 
					
						
							|  |  |  |                 utcDateModified  | 
					
						
							|  |  |  |             FROM note_revision_contents  | 
					
						
							|  |  |  |             WHERE noteRevisionId = ?`, [this.noteRevisionId]); | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     beforeSaving() { | 
					
						
							|  |  |  |         super.beforeSaving(); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         this.utcDateModified = dateUtils.utcNowDateTime(); | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     getPojo() { | 
					
						
							|  |  |  |         return { | 
					
						
							|  |  |  |             noteRevisionId: this.noteRevisionId, | 
					
						
							|  |  |  |             noteId: this.noteId, | 
					
						
							|  |  |  |             type: this.type, | 
					
						
							|  |  |  |             mime: this.mime, | 
					
						
							|  |  |  |             isProtected: this.isProtected, | 
					
						
							|  |  |  |             title: this.title, | 
					
						
							|  |  |  |             dateLastEdited: this.dateLastEdited, | 
					
						
							|  |  |  |             dateCreated: this.dateCreated, | 
					
						
							|  |  |  |             utcDateLastEdited: this.utcDateLastEdited, | 
					
						
							|  |  |  |             utcDateCreated: this.utcDateCreated, | 
					
						
							|  |  |  |             utcDateModified: this.utcDateModified, | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |             content: this.content, | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |             contentLength: this.contentLength | 
					
						
							|  |  |  |         }; | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |     getPojoToSave() { | 
					
						
							|  |  |  |         const pojo = this.getPojo(); | 
					
						
							| 
									
										
										
										
											2021-11-10 21:30:54 +01:00
										 |  |  |         delete pojo.content; // not getting persisted | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  |         delete pojo.contentLength; // not getting persisted | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         if (pojo.isProtected) { | 
					
						
							|  |  |  |             if (protectedSessionService.isProtectedSessionAvailable()) { | 
					
						
							|  |  |  |                 pojo.title = protectedSessionService.encrypt(this.title); | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |             else { | 
					
						
							|  |  |  |                 // updating protected note outside of protected session means we will keep original ciphertexts | 
					
						
							|  |  |  |                 delete pojo.title; | 
					
						
							|  |  |  |             } | 
					
						
							|  |  |  |         } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |         return pojo; | 
					
						
							|  |  |  |     } | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | module.exports = NoteRevision; | 
					
						
							|  |  |  | </code></pre> | 
					
						
							|  |  |  |         </article> | 
					
						
							|  |  |  |     </section> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | </div> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <nav> | 
					
						
							| 
									
										
										
										
											2022-04-16 00:17:32 +02:00
										 |  |  |     <h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-sql.html">sql</a></li></ul><h3>Classes</h3><ul><li><a href="AbstractEntity.html">AbstractEntity</a></li><li><a href="Attribute.html">Attribute</a></li><li><a href="BackendScriptApi.html">BackendScriptApi</a></li><li><a href="Branch.html">Branch</a></li><li><a href="EtapiToken.html">EtapiToken</a></li><li><a href="Note.html">Note</a></li><li><a href="NoteRevision.html">NoteRevision</a></li><li><a href="Option.html">Option</a></li><li><a href="RecentNote.html">RecentNote</a></li></ul><h3><a href="global.html">Global</a></h3> | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  | </nav> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <br class="clear"> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <footer> | 
					
						
							| 
									
										
										
										
											2022-11-07 21:26:13 +01:00
										 |  |  |     Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 4.0.0</a> | 
					
						
							| 
									
										
										
										
											2021-09-30 12:26:13 +02:00
										 |  |  | </footer> | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | <script> prettyPrint(); </script> | 
					
						
							|  |  |  | <script src="scripts/linenumber.js"> </script> | 
					
						
							|  |  |  | </body> | 
					
						
							|  |  |  | </html> |