From 8de6eb2e33b6cb07e301b90703b0aeeaa2f7c876 Mon Sep 17 00:00:00 2001
From: Dimole <dmlgzs@qq.com>
Date: Sat, 18 Jun 2022 20:25:57 +0800
Subject: [PATCH] feat: Support nested MultiMsg (#373)

---
 lib/client.ts               |  4 ++--
 lib/internal/contactable.ts | 10 +++++++++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/lib/client.ts b/lib/client.ts
index 547ad80c..9acc7d80 100644
--- a/lib/client.ts
+++ b/lib/client.ts
@@ -311,8 +311,8 @@ export class Client extends BaseClient {
 		return this.pickFriend(this.uin).getVideoUrl(fid, md5)
 	}
 	/** 获取转发消息 */
-	getForwardMsg(resid: string) {
-		return this.pickFriend(this.uin).getForwardMsg(resid)
+	getForwardMsg(resid: string, fileName?: string) {
+		return this.pickFriend(this.uin).getForwardMsg(resid, fileName)
 	}
 	/** 制作转发消息 */
 	makeForwardMsg(fake: Forwardable[], dm = false) {
diff --git a/lib/internal/contactable.ts b/lib/internal/contactable.ts
index 2719fc97..cc7e7297 100644
--- a/lib/internal/contactable.ts
+++ b/lib/internal/contactable.ts
@@ -487,10 +487,18 @@ export abstract class Contactable {
 	}
 
 	/** 下载并解析合并转发 */
-	async getForwardMsg(resid: string) {
+	async getForwardMsg(resid: string, fileName: string = "MultiMsg") {
 		const ret = []
 		const buf = await this._downloadMultiMsg(String(resid), 2)
 		let a = pb.decode(buf)[2]
+		if (!Array.isArray(a)) a = [a]
+		for (let b of a) {
+			const m_fileName = b[1].toString()
+			if (m_fileName === fileName) {
+				a = b
+				break
+			}
+		}
 		if (Array.isArray(a)) a = a[0]
 		a = a[2][1]
 		if (!Array.isArray(a)) a = [a]