feat: add config file saving/reading

backend/UserConfig.ts

@@ -1,5 +1,7 @@
 import fs from 'fs-extra';
+import { path } from '@tycrek/joint';
 import { UserConfiguration, UserConfigTypeChecker } from 'ass';
+import { log } from './log';
 
 /**
  * Returns a boolean if the provided value is a number
@@ -27,11 +29,19 @@ const Checkers: UserConfigTypeChecker = {
 }
 
 export class UserConfig {
-	private config: UserConfiguration;
-	public getConfig = () => this.config;
+	private static config: UserConfiguration;
+	private ready = false;
+
+	public getConfig = () => UserConfig.config;
+	public getReady = () => this.ready;
 
 	constructor(config?: UserConfiguration) {
-		if (config != null) this.config = this.parseConfig(config);
+
+		// Typically this would only happen during first-time setup (for now)
+		if (config != null) {
+			UserConfig.config = this.parseConfig(config);
+			this.ready = true;
+		}
 	}
 
 	private parseConfig(config: UserConfiguration) {
@@ -44,4 +54,49 @@ export class UserConfig {
 		// All is fine, carry on!
 		return config;
 	}
+
+	/**
+	 * Save the config file to disk
+	 */
+	public saveConfigFile(): Promise<void> {
+		return new Promise(async (resolve, reject) => {
+			try {
+
+				// Only save is the config has been parsed
+				if (!this.ready) throw new Error('Config not ready to be saved!');
+
+				// Write to file
+				await fs.writeFile(path.join('userconfig.json'), JSON.stringify(UserConfig.config, null, '\t'));
+
+				resolve(void 0);
+			} catch (err) {
+				log.error('Failed to save config file!');
+				console.error(err);
+				reject(err);
+			}
+		});
+	}
+
+	/**
+	 * Reads the config file from disk
+	 */
+	public readConfigFile(): Promise<void> {
+		return new Promise(async (resolve, reject) => {
+			try {
+
+				// Read the file data
+				const data = (await fs.readFile(path.join('userconfig.json'))).toString();
+
+				// Ensure the config is valid
+				UserConfig.config = this.parseConfig(data as unknown as UserConfiguration);
+				this.ready = true;
+
+				resolve(void 0);
+			} catch (err) {
+				log.error('Failed to read config file!');
+				console.error(err);
+				reject(err);
+			}
+		});
+	}
 }