smaller refactorings (mostly entitization)

src/entities/image.js

@@ -0,0 +1,19 @@
+"use strict";
+
+const Entity = require('./entity');
+const utils = require('../services/utils');
+
+class Image extends Entity {
+    static get tableName() { return "images"; }
+    static get primaryKeyName() { return "imageId"; }
+
+    beforeSaving() {
+        if (!this.dateCreated) {
+            this.dateCreated = utils.nowDate();
+        }
+
+        this.dateModified = utils.nowDate();
+    }
+}
+
+module.exports = Image;

src/entities/note_image.js

@@ -2,6 +2,7 @@
 
 const Entity = require('./entity');
 const repository = require('../services/repository');
+const utils = require('../services/utils');
 
 class NoteImage extends Entity {
     static get tableName() { return "note_images"; }
@@ -10,6 +11,18 @@ class NoteImage extends Entity {
     async getNote() {
         return await repository.getEntity("SELECT * FROM notes WHERE noteId = ?", [this.noteId]);
     }
+
+    async getImage() {
+        return await repository.getEntity("SELECT * FROM images WHERE imageId = ?", [this.imageId]);
+    }
+
+    beforeSaving() {
+        if (!this.dateCreated) {
+            this.dateCreated = utils.nowDate();
+        }
+
+        this.dateModified = utils.nowDate();
+    }
 }
 
 module.exports = NoteImage;