Allow calling updateInfo without data

src/portal.js

@@ -61,6 +61,7 @@ class Portal {
 		}
 		for (const userData of users) {
 			const user = await this.app.getTelegramUser(userData.id)
+			// We don't want to update avatars here, as it would likely cause a flood error
 			await user.updateInfo(telegramPOV, userData, { updateAvatar: false })
 			await user.intent.join(this.roomID)
 		}
@@ -404,17 +405,25 @@ class Portal {
 	}
 
 	async updateInfo(telegramPOV, dialog) {
+		if (!dialog) {
+			console.log("updateInfo called without dialog data")
+			const { user } = this.peer.getInfo(telegramPOV)
+			if (!user) {
+				throw new Error("Dialog data not given and fetching data failed")
+			}
+			dialog = user
+		}
 		let changed = false
 		if (this.peer.type === "channel") {
 			if (telegramPOV && this.accessHashes.get(telegramPOV.userID) !== dialog.access_hash) {
 				this.accessHashes.set(telegramPOV.userID, dialog.access_hash)
 				changed = true
 			}
-		} else if (this.peer.type === "user") {
+		}
+		if (this.peer.type === "user") {
 			const user = await this.app.getTelegramUser(this.peer.id)
 			await user.updateInfo(telegramPOV, dialog)
-		}
+		} else if (dialog.photo && dialog.photo.photo_big) {
-		if (dialog.photo && dialog.photo.photo_big) {
 			changed = await this.updateAvatar(telegramPOV, dialog.photo.photo_big) || changed
 		}
 		changed = this.peer.updateInfo(dialog) || changed

src/telegram-user.js

@@ -72,6 +72,15 @@ class TelegramUser {
 	}
 
 	async updateInfo(telegramPOV, user, { updateAvatar = false } = {}) {
+		if (!user) {
+			console.log("updateInfo called without user data")
+			user = await telegramPOV.client("users.getFullUser", {
+				id: this.toPeer(telegramPOV).toInputObject(),
+			})
+			if (!user) {
+				throw new Error("User data not given and fetching data failed")
+			}
+		}
 		let changed = false
 		if (user.first_name && this.firstName !== user.first_name) {
 			this.firstName = user.first_name