From 3f80a6e757918575b6cc9ad9ce75e5d969abc353 Mon Sep 17 00:00:00 2001
From: JoeLeaf <42119136+JoeLeaf@users.noreply.github.com>
Date: Sat, 15 Apr 2023 09:43:11 +0800
Subject: [PATCH] Add files via upload

---
 lib/message/converter.ts |  49 ++-
 lib/message/elements.ts  |  16 +-
 lib/message/parser.ts    | 695 ++++++++++++++++++++-------------------
 3 files changed, 410 insertions(+), 350 deletions(-)

diff --git a/lib/message/converter.ts b/lib/message/converter.ts
index 3a1bc76e..e3a0dd66 100644
--- a/lib/message/converter.ts
+++ b/lib/message/converter.ts
@@ -1,9 +1,11 @@
 import { deflateSync } from "zlib"
 import { FACE_OLD_BUF, facemap } from "./face"
 import { Image } from "./image"
-import { AtElem, BfaceElem, Quotable, MessageElem, TextElem,
+import {
+	AtElem, BfaceElem, Quotable, MessageElem, TextElem,
 	FaceElem, FlashElem, ImageElem, JsonElem, LocationElem, MfaceElem, ReplyElem,
-	MiraiElem, PokeElem, PttElem, Sendable, ShareElem, VideoElem, XmlElem, FileElem } from "./elements"
+	MiraiElem, PokeElem, PttElem, Sendable, ShareElem, VideoElem, XmlElem, FileElem, LottieElem
+} from "./elements"
 import { pb } from "../core"
 import { escapeXml } from "../common"
 import { Anonymous, rand2uuid, parseDmMessageId, parseGroupMessageId } from "./message"
@@ -101,7 +103,7 @@ export class Converter {
 			// 频道中的AT
 			this.elems.push({
 				1: {
-					1: text || (id === "all" ? "@全体成员" : ("@"+id)),
+					1: text || (id === "all" ? "@全体成员" : ("@" + id)),
 					12: {
 						3: 2,
 						5: id === "all" ? 0 : BigInt(id)
@@ -130,6 +132,37 @@ export class Converter {
 		this._text(display, attr6)
 	}
 
+	private lottie(elem: LottieElem) {
+		let { id, text } = elem;
+		if (!text)
+			text = "超级表情" + id;
+		id = Number(id);
+		this.elems.push({
+			53: {
+				1: 37,
+				2: {
+					1: "1",
+					2: "19",
+					3: id,
+					4: 1,
+					5: 1,
+					6: "",
+					7: text,
+					8: "",
+					9: 1
+				},
+				3: 1
+			}
+		});
+		this.elems.push({
+			1: {
+				1: text,
+				12: {
+					1: "[" + text.replace("/", "") + "]你需要升级一下QQ啦~"
+				}
+			}
+		});
+	}
 	private face(elem: FaceElem) {
 		let { id, text } = elem
 		id = Number(id)
@@ -257,9 +290,11 @@ export class Converter {
 			throw new Error("非法的视频元素: " + file)
 		const buf = Buffer.from(file.replace("protobuf://", ""), "base64")
 		this.elems.push({ 19: buf })
-		this.elems.push({ 1: {
-			1: "你的QQ暂不支持查看视频短片，请期待后续版本。"
-		} })
+		this.elems.push({
+			1: {
+				1: "你的QQ暂不支持查看视频短片，请期待后续版本。"
+			}
+		})
 		this.brief += "[视频]"
 		this.is_chain = false
 	}
@@ -444,7 +479,7 @@ export class Converter {
 	quote(source: Quotable) {
 		const elems = new Converter(source.message || "", this.ext).elems
 		const tmp = this.brief
-		if(!this.ext?.dm){
+		if (!this.ext?.dm) {
 			this.at({ type: "at", qq: source.user_id })
 			this.elems.unshift(this.elems.pop()!)
 		}
diff --git a/lib/message/elements.ts b/lib/message/elements.ts
index b34769b3..0c4ec95b 100644
--- a/lib/message/elements.ts
+++ b/lib/message/elements.ts
@@ -24,6 +24,13 @@ export interface FaceElem {
 	text?: string
 }
 
+/**	超级表情 */
+export interface LottieElem{
+	type: "lottie"
+	id: number
+	text?: string
+}
+
 /** 原创表情 */
 export interface BfaceElem {
 	type: "bface"
@@ -181,7 +188,7 @@ export type ChainElem = TextElem | FaceElem | BfaceElem | MfaceElem | ImageElem
 
 /** 注意：只有`ChainElem`中的元素可以组合发送，其他元素只能单独发送 */
 export type MessageElem = TextElem | FaceElem | BfaceElem | MfaceElem | ImageElem | AtElem | MiraiElem | ReplyElem |
-	FlashElem | PttElem | VideoElem | JsonElem | XmlElem | PokeElem | LocationElem | ShareElem | FileElem
+	FlashElem | PttElem | VideoElem | JsonElem | XmlElem | PokeElem | LocationElem | ShareElem | FileElem | LottieElem;
 
 /** 可通过sendMsg发送的类型集合 (字符串、元素对象，或它们的数组) */
 export type Sendable = string | MessageElem | (string | MessageElem)[]
@@ -206,6 +213,11 @@ export const segment = {
 			type: "sface", id, text
 		}
 	},
+	lottie(id: number, text?: string | undefined): LottieElem{
+		return {
+            type: "lottie", id, text
+        }
+	},
 	/** 原创表情(file规则不明) */
 	bface(file: string, text: string): BfaceElem {
 		return {
@@ -334,7 +346,7 @@ function unescapeCQInside(s: string) {
 	return ""
 }
 function qs(s: string, sep = ",", equal = "=") {
-	const ret: any = { }
+	const ret: any = {}
 	const split = s.split(sep)
 	for (let v of split) {
 		const i = v.indexOf(equal)
diff --git a/lib/message/parser.ts b/lib/message/parser.ts
index 3cc9fa19..b7327b4c 100644
--- a/lib/message/parser.ts
+++ b/lib/message/parser.ts
@@ -1,341 +1,354 @@
-import { unzipSync } from "zlib"
-import { pb } from "../core"
-import * as T from "./elements"
-import { facemap, pokemap } from "./face"
-import { buildImageFileParam } from "./image"
-
-/** 解析消息 */
-export function parse(rich: pb.Proto | pb.Proto[], uin?: number) {
-	return new Parser(rich, uin)
-}
-
-/** 消息解析器 */
-export class Parser {
-
-	message: T.MessageElem[] = []
-	brief = ""
-	content = ""
-	/** 匿名情报 */
-	anon?: pb.Proto
-	/** 额外情报 */
-	extra?: pb.Proto
-	/** 引用回复 */
-	quotation?: pb.Proto
-	atme = false
-	atall = false
-
-	private exclusive = false
-	private it?: IterableIterator<[number, pb.Proto]>
-
-	public constructor(rich: pb.Proto | pb.Proto[], private uin?: number) {
-		if (Array.isArray(rich)) {
-			this.parseElems(rich)
-		} else {
-			if (rich[4])
-				this.parseExclusiveElem(0, rich[4])
-			this.parseElems(Array.isArray(rich[2]) ? rich[2] : [rich[2]])
-		}
-	}
-
-	/** 获取下一个节点的文本 */
-	private getNextText() {
-		try {
-			const elem = this.it?.next().value[1][1]
-			return String(elem[1])
-		} catch {
-			return "[未知]"
-		}
-	}
-
-	/** 解析: xml, json, ptt, video, flash, file, shake, poke */
-	private parseExclusiveElem(type: number, proto: pb.Proto) {
-		let elem: T.MessageElem
-		let brief: string
-		switch (type) {
-		case 12: //xml
-		case 51: //json
-			const buf = proto[1].toBuffer() as Buffer
-			elem = {
-				type: type === 12 ? "xml" : "json",
-				data: String(buf[0] > 0 ? unzipSync(buf.slice(1)) : buf.slice(1)),
-				id: proto[2]
-			} as T.XmlElem
-			brief = elem.type + "消息"
-			this.content = elem.data
-			break
-		case 3: //flash
-			elem = this.parseImgElem(proto, "flash") as T.FlashElem
-			brief = "闪照"
-			this.content = `{flash:${(elem.file as string).slice(0, 32).toUpperCase()}}`
-			break
-		case 0: //ptt
-			elem = {
-				type: "record",
-				file: "protobuf://" + proto.toBase64(),
-				url: "",
-				md5: proto[4].toHex(),
-				size: proto[6] || 0,
-				seconds: proto[19] || 0,
-			}
-			if (proto[20]) {
-				const url = String(proto[20])
-				elem.url = url.startsWith("http") ? url : "https://grouptalk.c2c.qq.com" + url
-			}
-			brief = "语音"
-			this.content = `{ptt:${elem.url}}`
-			break
-		case 19: //video
-			elem = {
-				type: "video",
-				file: "protobuf://" + proto.toBase64(),
-				name: proto[3]?.toString() || "",
-				fid: String(proto[1]),
-				md5: proto[2].toBase64(),
-				size: proto[6] || 0,
-				seconds: proto[5] || 0,
-			}
-			brief = "视频"
-			this.content = `{video:${elem.fid}}`
-			break
-		case 5: //transElem
-			const trans = pb.decode(proto[2].toBuffer().slice(3))[7][2]
-			elem = {
-				type: "file",
-				name: String(trans[4]),
-				fid: String(trans[2]).replace("/", ""),
-				md5: String(trans[8]),
-				size: trans[3],
-				duration: trans[5],
-			}
-			brief = "群文件"
-			this.content = `{file:${elem.fid}}`
-			break
-		case 126: //poke
-			if (!proto[3])
-				return
-			const pokeid = proto[3] === 126 ? proto[2][4] : proto[3]
-			elem = {
-				type: "poke",
-				id: pokeid,
-				text: pokemap[pokeid]
-			}
-			brief = pokemap[pokeid]
-			this.content = `{poke:${elem.id}}`
-			break
-		default:
-			return
-		}
-		this.message = [elem]
-		this.brief = "[" + brief + "]"
-		this.exclusive = true
-	}
-
-	/** 解析: text, at, face, bface, sface, image, mirai */
-	private parsePartialElem(type: number, proto: pb.Proto) {
-		let elem: T.MessageElem
-		let brief = ""
-		let content = ""
-		switch (type) {
-		case 1: //text&at
-			brief = String(proto[1])
-			const buf = proto[3]?.toBuffer() as Buffer
-			if (buf && buf[1] === 1) {
-				elem = {
-					type: "at",
-					qq: 0,
-					text: brief
-				}
-				if (buf[6] === 1) {
-					elem.qq = "all"
-					this.atall = true
-				} else {
-					elem.qq = buf.readUInt32BE(7)
-					if (elem.qq === this.uin)
-						this.atme = true
-				}
-				brief = brief || ("@" + elem.qq)
-				content = `{at:${elem.qq}}`
-			} else if (proto[12] && !proto[12][1]) {
-				// 频道中的AT
-				elem = {
-					type: "at",
-					qq: 0,
-					text: brief
-				}
-				elem.id = proto[12][5] ? String(proto[12][5]) : "all"
-				brief = brief || ("@" + elem.qq)
-				content = `{at:${elem.qq}}`
-			} else {
-				if (!brief)
-					return
-				content = brief
-				elem = {
-					type: "text",
-					text: brief
-				}
-			}
-			break
-		case 2: //face
-			elem = {
-				type: "face",
-				id: proto[1],
-				text: facemap[proto[1]] || "表情",
-			}
-			brief = `[${elem.text}]`
-			content = `{face:${elem.id}}`
-			break
-		case 33: //face(id>255)
-			elem = {
-				type: "face",
-				id: proto[1],
-				text: facemap[proto[1]],
-			}
-			if (!elem.text)
-				elem.text = proto[2] ? String(proto[2]) : ("/" + elem.id)
-			brief = `[${elem.text}]`
-			content = `{face:${elem.id}}`
-			break
-		case 6: //bface
-			brief = this.getNextText()
-			if (brief.includes("骰子") || brief.includes("猜拳")) {
-				elem = {
-					type: brief.includes("骰子") ? "dice" : "rps",
-					id: proto[12].toBuffer()[16] - 0x30 + 1
-				}
-				content = `{${elem.type}:${elem.id}}`
-			} else {
-				elem = {
-					type: "bface",
-					file: proto[4].toHex() + proto[7].toHex() + proto[5],
-					text: brief.replace(/[[\]]/g, "")
-				}
-				content = `{bface:${elem.text}}`
-			}
-			break
-		case 4:
-		case 8:
-			elem = this.parseImgElem(proto, "image") as T.ImageElem
-			brief = elem.asface ? "[动画表情]" : "[图片]"
-			content = `{image:${(elem.file as string).slice(0, 32).toUpperCase()}}`
-			break
-		case 34: //sface
-			brief = this.getNextText()
-			elem = {
-				type: "sface",
-				id: proto[1],
-				text: brief.replace(/[[\]]/g, ""),
-			}
-			content = `{sface:${elem.id}}`
-			break
-		case 31: //mirai
-			if (proto[3] === 103904510) {
-				brief = content = String(proto[2])
-				elem = {
-					type: "mirai",
-					data: brief,
-				}
-			} else {
-				return
-			}
-			break
-		default:
-			return
-		}
-
-		// 删除回复中多余的AT元素
-		if (this.message.length === 2 && elem.type === "at" && this.message[0]?.type === "at" && this.message[1]?.type === "text") {
-			if (this.message[0].qq === elem.qq && this.message[1].text === " ") {
-				this.message.splice(0, 2)
-				this.brief = ""
-			}
-		}
-
-		this.brief += brief
-		this.content += content
-		if (!Array.isArray(this.message))
-			this.message = []
-		const prev = this.message[this.message.length - 1]
-		if (elem.type === "text" && prev?.type === "text")
-			prev.text += elem.text
-		else
-			this.message.push(elem)
-	}
-
-	private parseElems(arr: pb.Proto[]) {
-		this.it = arr.entries()
-		while (true) {
-			let wrapper = this.it.next().value?.[1]
-			if (!wrapper) break
-			const type = Number(Object.keys(Reflect.getPrototypeOf(wrapper) as object)[0])
-			const proto = wrapper[type]
-			if (type === 16) { //extraInfo
-				this.extra = proto
-			} else if (type === 21) { //anonGroupMsg
-				this.anon = proto
-			} else if (type === 45) { //sourceMsg
-				this.quotation = proto
-			} else if (!this.exclusive) {
-				switch (type) {
-				case 1: //text
-				case 2: //face
-				case 4: //notOnlineImage
-				case 6: //bface
-				case 8: //customFace
-				case 31: //mirai
-				case 34: //sface
-					this.parsePartialElem(type, proto)
-					break
-				case 5: //transElem
-				case 12: //xml
-				case 19: //video
-				case 51: //json
-					this.parseExclusiveElem(type, proto)
-					break
-				case 53: //commonElem
-					if (proto[1] === 3) { //flash
-						this.parseExclusiveElem(3, proto[2][1] ? proto[2][1] : proto[2][2])
-					} else if (proto[1] === 33) { //face(id>255)
-						this.parsePartialElem(33, proto[2])
-					} else if (proto[1] === 2) { //poke
-						this.parseExclusiveElem(126, proto)
-					}
-					break
-				default:
-					break
-				}
-			}
-		}
-	}
-
-	private parseImgElem(proto: pb.Proto, type: "flash" | "image") {
-		let elem: T.ImageElem | T.FlashElem
-		if (proto[7]?.toHex) {
-			elem = {
-				type,
-				file: buildImageFileParam(proto[7].toHex(), proto[2], proto[9], proto[8], proto[5]),
-				url: "",
-			}
-			if (proto[29] && proto[29][30])
-				elem.url = `https://c2cpicdw.qpic.cn${proto[29][30]}&spec=0&rf=naio`
-			else if (proto[15])
-				elem.url = `https://c2cpicdw.qpic.cn${proto[15]}`
-			else if (proto[10])
-				elem.url = `https://c2cpicdw.qpic.cn/offpic_new/0/${proto[10]}/0`
-			if (elem.type === "image")
-				elem.asface = proto[29]?.[1] === 1
-		} else { //群图
-			elem = {
-				type,
-				file: buildImageFileParam(proto[13].toHex(), proto[25], proto[22], proto[23], proto[20]),
-				url: proto[16] ? `https://gchat.qpic.cn${proto[16]}` : getGroupImageUrl(proto[13].toHex()),
-			}
-			if (elem.type === "image")
-				elem.asface = proto[34]?.[1] === 1
-		}
-		return elem
-	}
-}
-
-export function getGroupImageUrl(md5: string) {
-	return `https://gchat.qpic.cn/gchatpic_new/0/0-0-${md5.toUpperCase()}/0`
-}
+import { unzipSync } from "zlib"
+import { pb } from "../core"
+import * as T from "./elements"
+import { facemap, pokemap } from "./face"
+import { buildImageFileParam } from "./image"
+
+/** 解析消息 */
+export function parse(rich: pb.Proto | pb.Proto[], uin?: number) {
+	return new Parser(rich, uin)
+}
+
+/** 消息解析器 */
+export class Parser {
+
+	message: T.MessageElem[] = []
+	brief = ""
+	content = ""
+	/** 匿名情报 */
+	anon?: pb.Proto
+	/** 额外情报 */
+	extra?: pb.Proto
+	/** 引用回复 */
+	quotation?: pb.Proto
+	atme = false
+	atall = false
+
+	private exclusive = false
+	private it?: IterableIterator<[number, pb.Proto]>
+
+	public constructor(rich: pb.Proto | pb.Proto[], private uin?: number) {
+		if (Array.isArray(rich)) {
+			this.parseElems(rich)
+		} else {
+			if (rich[4])
+				this.parseExclusiveElem(0, rich[4])
+			this.parseElems(Array.isArray(rich[2]) ? rich[2] : [rich[2]])
+		}
+	}
+
+	/** 获取下一个节点的文本 */
+	private getNextText() {
+		try {
+			const elem = this.it?.next().value[1][1]
+			return String(elem[1])
+		} catch {
+			return "[未知]"
+		}
+	}
+
+	/** 解析: xml, json, ptt, video, flash, file, shake, poke */
+	private parseExclusiveElem(type: number, proto: pb.Proto) {
+		let elem: T.MessageElem
+		let brief: string
+		switch (type) {
+			case 12: //xml
+			case 51: //json
+				const buf = proto[1].toBuffer() as Buffer
+				elem = {
+					type: type === 12 ? "xml" : "json",
+					data: String(buf[0] > 0 ? unzipSync(buf.slice(1)) : buf.slice(1)),
+					id: proto[2]
+				} as T.XmlElem
+				brief = elem.type + "消息"
+				this.content = elem.data
+				break
+			case 3: //flash
+				elem = this.parseImgElem(proto, "flash") as T.FlashElem
+				brief = "闪照"
+				this.content = `{flash:${(elem.file as string).slice(0, 32).toUpperCase()}}`
+				break
+			case 0: //ptt
+				elem = {
+					type: "record",
+					file: "protobuf://" + proto.toBase64(),
+					url: "",
+					md5: proto[4].toHex(),
+					size: proto[6] || 0,
+					seconds: proto[19] || 0,
+				}
+				if (proto[20]) {
+					const url = String(proto[20])
+					elem.url = url.startsWith("http") ? url : "https://grouptalk.c2c.qq.com" + url
+				}
+				brief = "语音"
+				this.content = `{ptt:${elem.url}}`
+				break
+			case 19: //video
+				elem = {
+					type: "video",
+					file: "protobuf://" + proto.toBase64(),
+					name: proto[3]?.toString() || "",
+					fid: String(proto[1]),
+					md5: proto[2].toBase64(),
+					size: proto[6] || 0,
+					seconds: proto[5] || 0,
+				}
+				brief = "视频"
+				this.content = `{video:${elem.fid}}`
+				break
+			case 5: //transElem
+				const trans = pb.decode(proto[2].toBuffer().slice(3))[7][2]
+				elem = {
+					type: "file",
+					name: String(trans[4]),
+					fid: String(trans[2]).replace("/", ""),
+					md5: String(trans[8]),
+					size: trans[3],
+					duration: trans[5],
+				}
+				brief = "群文件"
+				this.content = `{file:${elem.fid}}`
+				break
+			case 37: //qlottie
+				if (!proto[3])
+					return;
+				elem = {
+					type: "lottie",
+					id: proto[2][3],
+					text: proto[2][7] ? String(proto[2][7]) : "超级表情",
+				};
+				brief = elem.text ? elem.text : "超级表情";
+				this.content = `{lottie:${elem.id}}`;
+				break;
+			case 126: //poke
+				if (!proto[3])
+					return
+				const pokeid = proto[3] === 126 ? proto[2][4] : proto[3]
+				elem = {
+					type: "poke",
+					id: pokeid,
+					text: pokemap[pokeid]
+				}
+				brief = pokemap[pokeid]
+				this.content = `{poke:${elem.id}}`
+				break
+			default:
+				return
+		}
+		this.message = [elem]
+		this.brief = "[" + brief + "]"
+		this.exclusive = true
+	}
+
+	/** 解析: text, at, face, bface, sface, image, mirai */
+	private parsePartialElem(type: number, proto: pb.Proto) {
+		let elem: T.MessageElem
+		let brief = ""
+		let content = ""
+		switch (type) {
+			case 1: //text&at
+				brief = String(proto[1])
+				const buf = proto[3]?.toBuffer() as Buffer
+				if (buf && buf[1] === 1) {
+					elem = {
+						type: "at",
+						qq: 0,
+						text: brief
+					}
+					if (buf[6] === 1) {
+						elem.qq = "all"
+						this.atall = true
+					} else {
+						elem.qq = buf.readUInt32BE(7)
+						if (elem.qq === this.uin)
+							this.atme = true
+					}
+					brief = brief || ("@" + elem.qq)
+					content = `{at:${elem.qq}}`
+				} else if (proto[12] && !proto[12][1]) {
+					// 频道中的AT
+					elem = {
+						type: "at",
+						qq: 0,
+						text: brief
+					}
+					elem.id = proto[12][5] ? String(proto[12][5]) : "all"
+					brief = brief || ("@" + elem.qq)
+					content = `{at:${elem.qq}}`
+				} else {
+					if (!brief)
+						return
+					content = brief
+					elem = {
+						type: "text",
+						text: brief
+					}
+				}
+				break
+			case 2: //face
+				elem = {
+					type: "face",
+					id: proto[1],
+					text: facemap[proto[1]] || "表情",
+				}
+				brief = `[${elem.text}]`
+				content = `{face:${elem.id}}`
+				break
+			case 33: //face(id>255)
+				elem = {
+					type: "face",
+					id: proto[1],
+					text: facemap[proto[1]],
+				}
+				if (!elem.text)
+					elem.text = proto[2] ? String(proto[2]) : ("/" + elem.id)
+				brief = `[${elem.text}]`
+				content = `{face:${elem.id}}`
+				break
+			case 6: //bface
+				brief = this.getNextText()
+				if (brief.includes("骰子") || brief.includes("猜拳")) {
+					elem = {
+						type: brief.includes("骰子") ? "dice" : "rps",
+						id: proto[12].toBuffer()[16] - 0x30 + 1
+					}
+					content = `{${elem.type}:${elem.id}}`
+				} else {
+					elem = {
+						type: "bface",
+						file: proto[4].toHex() + proto[7].toHex() + proto[5],
+						text: brief.replace(/[[\]]/g, "")
+					}
+					content = `{bface:${elem.text}}`
+				}
+				break
+			case 4:
+			case 8:
+				elem = this.parseImgElem(proto, "image") as T.ImageElem
+				brief = elem.asface ? "[动画表情]" : "[图片]"
+				content = `{image:${(elem.file as string).slice(0, 32).toUpperCase()}}`
+				break
+			case 34: //sface
+				brief = this.getNextText()
+				elem = {
+					type: "sface",
+					id: proto[1],
+					text: brief.replace(/[[\]]/g, ""),
+				}
+				content = `{sface:${elem.id}}`
+				break
+			case 31: //mirai
+				if (proto[3] === 103904510) {
+					brief = content = String(proto[2])
+					elem = {
+						type: "mirai",
+						data: brief,
+					}
+				} else {
+					return
+				}
+				break
+			default:
+				return
+		}
+
+		// 删除回复中多余的AT元素
+		if (this.message.length === 2 && elem.type === "at" && this.message[0]?.type === "at" && this.message[1]?.type === "text") {
+			if (this.message[0].qq === elem.qq && this.message[1].text === " ") {
+				this.message.splice(0, 2)
+				this.brief = ""
+			}
+		}
+
+		this.brief += brief
+		this.content += content
+		if (!Array.isArray(this.message))
+			this.message = []
+		const prev = this.message[this.message.length - 1]
+		if (elem.type === "text" && prev?.type === "text")
+			prev.text += elem.text
+		else
+			this.message.push(elem)
+	}
+
+	private parseElems(arr: pb.Proto[]) {
+		this.it = arr.entries()
+		while (true) {
+			let wrapper = this.it.next().value?.[1]
+			if (!wrapper) break
+			const type = Number(Object.keys(Reflect.getPrototypeOf(wrapper) as object)[0])
+			const proto = wrapper[type]
+			if (type === 16) { //extraInfo
+				this.extra = proto
+			} else if (type === 21) { //anonGroupMsg
+				this.anon = proto
+			} else if (type === 45) { //sourceMsg
+				this.quotation = proto
+			} else if (!this.exclusive) {
+				switch (type) {
+					case 1: //text
+					case 2: //face
+					case 4: //notOnlineImage
+					case 6: //bface
+					case 8: //customFace
+					case 31: //mirai
+					case 34: //sface
+						this.parsePartialElem(type, proto)
+						break
+					case 5: //transElem
+					case 12: //xml
+					case 19: //video
+					case 51: //json
+						this.parseExclusiveElem(type, proto)
+						break
+					case 53: //commonElem
+						if (proto[1] === 3) { //flash
+							this.parseExclusiveElem(3, proto[2][1] ? proto[2][1] : proto[2][2])
+						} else if (proto[1] === 33) { //face(id>255)
+							this.parsePartialElem(33, proto[2])
+						} else if (proto[1] === 2) { //poke
+							this.parseExclusiveElem(126, proto)
+						} else if (proto[1] === 37) { //qlottie
+							this.parseExclusiveElem(37, proto);
+						}
+						break
+					default:
+						break
+				}
+			}
+		}
+	}
+
+	private parseImgElem(proto: pb.Proto, type: "flash" | "image") {
+		let elem: T.ImageElem | T.FlashElem
+		if (proto[7]?.toHex) {
+			elem = {
+				type,
+				file: buildImageFileParam(proto[7].toHex(), proto[2], proto[9], proto[8], proto[5]),
+				url: "",
+			}
+			if (proto[29] && proto[29][30])
+				elem.url = `https://c2cpicdw.qpic.cn${proto[29][30]}&spec=0&rf=naio`
+			else if (proto[15])
+				elem.url = `https://c2cpicdw.qpic.cn${proto[15]}`
+			else if (proto[10])
+				elem.url = `https://c2cpicdw.qpic.cn/offpic_new/0/${proto[10]}/0`
+			if (elem.type === "image")
+				elem.asface = proto[29]?.[1] === 1
+		} else { //群图
+			elem = {
+				type,
+				file: buildImageFileParam(proto[13].toHex(), proto[25], proto[22], proto[23], proto[20]),
+				url: proto[16] ? `https://gchat.qpic.cn${proto[16]}` : getGroupImageUrl(proto[13].toHex()),
+			}
+			if (elem.type === "image")
+				elem.asface = proto[34]?.[1] === 1
+		}
+		return elem
+	}
+}
+
+export function getGroupImageUrl(md5: string) {
+	return `https://gchat.qpic.cn/gchatpic_new/0/0-0-${md5.toUpperCase()}/0`
+}