藍をインターフェイスに

src/ai.ts

@@ -41,20 +41,31 @@ export type Meta = {
 /**
  * 藍
  */
-export default class 藍 {
+export default interface 藍 extends Ai {
+	connection: Stream;
+	lastSleepedAt: number;
+
+	friends: loki.Collection<FriendDoc>;
+	moduleData: loki.Collection<any>;
+}
+
+/**
+ * 起動中の藍
+ */
+export class Ai {
 	public readonly version = pkg._v;
 	public account: User;
-	public connection: Stream;
+	public connection?: Stream;
 	public modules: Module[] = [];
 	private mentionHooks: MentionHook[] = [];
 	private contextHooks: { [moduleName: string]: ContextHook } = {};
 	private timeoutCallbacks: { [moduleName: string]: TimeoutCallback } = {};
 	public db: loki;
-	public lastSleepedAt: number;
+	public lastSleepedAt?: number;
 
-	private meta: loki.Collection<Meta>;
+	private meta?: loki.Collection<Meta>;
 
-	private contexts: loki.Collection<{
+	private contexts?: loki.Collection<{
 		noteId?: string;
 		userId?: string;
 		module: string;
@@ -62,7 +73,7 @@ export default class 藍 {
 		data?: any;
 	}>;
 
-	private timers: loki.Collection<{
+	private timers?: loki.Collection<{
 		id: string;
 		module: string;
 		insertedAt: number;
@@ -70,8 +81,10 @@ export default class 藍 {
 		data?: any;
 	}>;
 
-	public friends: loki.Collection<FriendDoc>;
+	public friends?: loki.Collection<FriendDoc>;
-	public moduleData: loki.Collection<any>;
+	public moduleData?: loki.Collection<any>;
+
+	private ready: boolean = false;
 
 	/**
 	 * 藍インスタンスを生成します
@@ -138,6 +151,9 @@ export default class 藍 {
 		// Init stream
 		this.connection = new Stream();
 
+		// この時点から藍インスタンスに
+		this.setReady();
+
 		//#region Main stream
 		const mainStream = this.connection.useSharedConnection('main');
 
@@ -205,12 +221,40 @@ export default class 藍 {
 		this.log(chalk.green.bold('Ai am now running!'));
 	}
 
+	/**
+	 * 準備が完了したフラグを立てる。
+	 */
+	private setReady(): asserts this is 藍 {
+		// 呼び出すタイミングが正しいか検証
+		if (
+			this.connection == null ||
+			this.lastSleepedAt == null ||
+			this.meta == null ||
+			this.contexts == null ||
+			this.timers == null ||
+			this.friends == null ||
+			this.moduleData == null
+		) {
+			throw new TypeError('Cannot set ready');
+		}
+
+		this.ready = true;
+	}
+
+	public requireReady(): asserts this is 藍 {
+		if (!this.ready) {
+			throw new TypeError('Ai am not ready!');
+		}
+	}
+
 	/**
 	 * ユーザーから話しかけられたとき
 	 * (メンション、リプライ、トークのメッセージ)
 	 */
 	@bindThis
 	private async onReceiveMessage(msg: Message): Promise<void> {
+		this.requireReady();
+
 		this.log(chalk.gray(`<<< An message received: ${chalk.underline(msg.id)}`));
 
 		// Ignore message if the user is a bot
@@ -222,7 +266,7 @@ export default class 藍 {
 		const isNoContext = msg.replyId == null;
 
 		// Look up the context
-		const context = isNoContext ? null : this.contexts.findOne({
+		const context = isNoContext ? null : this.contexts!.findOne({
 			noteId: msg.replyId
 		});
 
@@ -278,6 +322,8 @@ export default class 藍 {
 
 	@bindThis
 	private onNotification(notification: any) {
+		this.requireReady();
+
 		switch (notification.type) {
 			// リアクションされたら親愛度を少し上げる
 			// TODO: リアクション取り消しをよしなにハンドリングする
@@ -294,12 +340,14 @@ export default class 藍 {
 
 	@bindThis
 	private crawleTimer() {
-		const timers = this.timers.find();
+		this.requireReady();
+
+		const timers = this.timers!.find();
 		for (const timer of timers) {
 			// タイマーが時間切れかどうか
 			if (Date.now() - (timer.insertedAt + timer.delay) >= 0) {
 				this.log(`Timer expired: ${timer.module} ${timer.id}`);
-				this.timers.remove(timer);
+				this.timers!.remove(timer);
 				this.timeoutCallbacks[timer.module](timer.data);
 			}
 		}
@@ -330,6 +378,8 @@ export default class 藍 {
 
 	@bindThis
 	public lookupFriend(userId: User['id']): Friend | null {
+		this.requireReady();
+
 		const doc = this.friends.findOne({
 			userId: userId
 		});
@@ -399,7 +449,8 @@ export default class 藍 {
 	 */
 	@bindThis
 	public subscribeReply(module: Module, key: string | null, id: string, data?: any) {
-		this.contexts.insertOne({
+		this.requireReady();
+		this.contexts!.insertOne({
 			noteId: id,
 			module: module.name,
 			key: key,
@@ -414,7 +465,8 @@ export default class 藍 {
 	 */
 	@bindThis
 	public unsubscribeReply(module: Module, key: string | null) {
-		this.contexts.findAndRemove({
+		this.requireReady();
+		this.contexts!.findAndRemove({
 			key: key,
 			module: module.name
 		});
@@ -429,8 +481,10 @@ export default class 藍 {
 	 */
 	@bindThis
 	public setTimeoutWithPersistence(module: Module, delay: number, data?: any) {
+		this.requireReady();
+
 		const id = uuid();
-		this.timers.insertOne({
+		this.timers!.insertOne({
 			id: id,
 			module: module.name,
 			insertedAt: Date.now(),
@@ -443,6 +497,10 @@ export default class 藍 {
 
 	@bindThis
 	public getMeta() {
+		if (this.meta == null) {
+			throw new TypeError('meta has not been set');
+		}
+
 		const rec = this.meta.findOne();
 
 		if (rec) {
@@ -465,6 +523,11 @@ export default class 藍 {
 			rec[k] = v;
 		}
 
-		this.meta.update(rec);
+		this.meta!.update(rec);
 	}
 }
+
+// FIXME:
+// JS にコンパイルされたコードでインターフェイスであるはずの藍がインポートされてしまうので、
+// 同名のクラスを定義することで実行時エラーが出ないようにしている
+export default class 藍 {}

src/index.ts

@@ -5,7 +5,7 @@ import chalk from 'chalk';
 import got from 'got';
 import promiseRetry from 'promise-retry';
 
-import 藍 from './ai.js';
+import { Ai } from './ai.js';
 import config from './config.js';
 import _log from './utils/log.js';
 import pkg from '../package.json' assert { type: 'json' };
@@ -72,7 +72,7 @@ promiseRetry(retry => {
 	log('Starting AiOS...');
 
 	// 藍起動
-	new 藍(account, [
+	new Ai(account, [
 		new CoreModule(),
 		new EmojiModule(),
 		new EmojiReactModule(),