Start of #48

src/settings/PropertyMapper.ts

@@ -0,0 +1,98 @@
+import {PropertyMappingOption} from './PropertyMapping';
+import {MEDIA_TYPES} from '../utils/MediaTypeManager';
+import MediaDbPlugin from '../main';
+
+export class PropertyMapper {
+	plugin: MediaDbPlugin;
+
+	constructor(plugin: MediaDbPlugin) {
+		this.plugin = plugin;
+	}
+
+	/**
+	 * Converts an object using the conversion rules for its type.
+	 * Returns an unaltered object if object.type is null or undefined or if there are no conversion rules for the type.
+	 *
+	 * @param obj
+	 */
+	convertObject(obj: object): object {
+		if (!obj.hasOwnProperty('type')) {
+			return obj;
+		}
+
+		// @ts-ignore
+		if (MEDIA_TYPES.contains(obj.type)) {
+			return obj;
+		}
+
+		// @ts-ignore
+		const propertyMappings = this.plugin.settings.propertyMappings.find(x => x.type === obj.type).properties;
+
+		const newObj: object = {};
+
+		for (const [key, value] of Object.entries(obj)) {
+			for (const propertyMapping of propertyMappings) {
+				if (propertyMapping.property === key) {
+					if (propertyMapping.mapping === PropertyMappingOption.Map) {
+						// @ts-ignore
+						newObj[propertyMapping.newProperty] = value;
+					} else if (propertyMapping.mapping === PropertyMappingOption.Remove) {
+
+					} else if (propertyMapping.mapping === PropertyMappingOption.None) {
+						// @ts-ignore
+						newObj[key] = value;
+					}
+					break;
+				}
+			}
+		}
+
+		return newObj;
+	}
+
+	/**
+	 * Converts an object back using the conversion rules for its type.
+	 * Returns an unaltered object if object.type is null or undefined or if there are no conversion rules for the type.
+	 *
+	 * @param obj
+	 */
+	convertObjectBack(obj: object): object {
+		if (!obj.hasOwnProperty('type')) {
+			return obj;
+		}
+
+		// @ts-ignore
+		if (MEDIA_TYPES.contains(obj.type)) {
+			return obj;
+		}
+
+		// @ts-ignore
+		const propertyMappings = this.plugin.settings.propertyMappings.find(x => x.type === obj.type).properties;
+
+		const originalObj: object = {};
+
+		objLoop: for (const [key, value] of Object.entries(obj)) {
+			// first try if it is a normal property
+			for (const propertyMapping of propertyMappings) {
+				if (propertyMapping.property === key) {
+					// @ts-ignore
+					originalObj[key] = value;
+
+					continue objLoop;
+				}
+			}
+
+			// otherwise see if it is a mapped property
+			for (const propertyMapping of propertyMappings) {
+				if (propertyMapping.newProperty === key) {
+					// @ts-ignore
+					originalObj[propertyMapping.property] = value;
+
+					continue objLoop;
+				}
+			}
+		}
+
+		return originalObj;
+	}
+}