Add /ping command

Send and then edit over speedbump should now just post the edit.

Hopefully this doesn't have any negative consequences.

src/d2m/actions/edit-message.js

@@ -21,7 +21,7 @@ const mreq = sync.require("../../matrix/mreq")
 async function editMessage(message, guild, row) {
 	const historicalRoomOfMessage = from("message_room").join("historical_channel_room", "historical_room_index").where({message_id: message.id}).select("room_id").get()
 	const currentRoom = from("channel_room").join("historical_channel_room", "room_id").where({channel_id: message.channel_id}).select("room_id", "historical_room_index").get()
-	assert(currentRoom)
+	if (!currentRoom) return
 
 	if (historicalRoomOfMessage && historicalRoomOfMessage.room_id !== currentRoom.room_id) return // tombstoned rooms should not have new events (including edits) sent to them
 

src/d2m/actions/speedbump.js

@@ -4,6 +4,14 @@ const DiscordTypes = require("discord-api-types/v10")
 const passthrough = require("../../passthrough")
 const {discord, select, db} = passthrough
 
+const DEBUG_SPEEDBUMP = false
+
+function debugSpeedbump(message) {
+	if (DEBUG_SPEEDBUMP) {
+		console.log(message)
+	}
+}
+
 const SPEEDBUMP_SPEED = 4000 // 4 seconds delay
 const SPEEDBUMP_UPDATE_FREQUENCY = 2 * 60 * 60 // 2 hours
 
@@ -27,8 +35,8 @@ async function updateCache(channelID, lastChecked) {
 	db.prepare("UPDATE channel_room SET speedbump_id = ?, speedbump_webhook_id = ?, speedbump_checked = ? WHERE channel_id = ?").run(foundApplication, foundWebhook, now, channelID)
 }
 
-/** @type {Set<string>} set of messageID */
-const bumping = new Set()
+/** @type {Map<string, number>} messageID -> number of gateway events currently bumping */
+const bumping = new Map()
 
 /**
  * Slow down a message. After it passes the speedbump, return whether it's okay or if it's been deleted.
@@ -36,9 +44,26 @@ const bumping = new Set()
  * @returns whether it was deleted
  */
 async function doSpeedbump(messageID) {
-	bumping.add(messageID)
+	let value = (bumping.get(messageID) ?? 0) + 1
+	bumping.set(messageID, value)
+	debugSpeedbump(`[speedbump] WAIT ${messageID}++ = ${value}`)
+
 	await new Promise(resolve => setTimeout(resolve, SPEEDBUMP_SPEED))
-	return !bumping.delete(messageID)
+
+	if (!bumping.has(messageID)) {
+		debugSpeedbump(`[speedbump] DELETED ${messageID}`)
+		return true
+	}
+	value = bumping.get(messageID) - 1
+	if (value === 0) {
+		debugSpeedbump(`[speedbump] OK ${messageID}-- = ${value}`)
+		bumping.delete(messageID)
+		return false
+	} else {
+		debugSpeedbump(`[speedbump] MULTI ${messageID}-- = ${value}`)
+		bumping.set(messageID, value)
+		return true
+	}
 }
 
 /**

src/d2m/converters/edit-to-changes.js

@@ -227,8 +227,8 @@ async function editToChanges(message, guild, api) {
  */
 function makeReplacementEventContent(oldID, newFallbackContent, newInnerContent) {
 	const content = {
-		...newFallbackContent,
 		"m.mentions": {},
+		...newFallbackContent,
 		"m.new_content": {
 			...newInnerContent
 		},

src/d2m/converters/message-to-event.js

@@ -107,9 +107,10 @@ const embedTitleParser = markdown.markdownEngine.parserFor({
 
 /**
  * @param {{room?: boolean, user_ids?: string[]}} mentions
- * @param {DiscordTypes.APIAttachment} attachment
+ * @param {Omit<DiscordTypes.APIAttachment, "id" | "proxy_url">} attachment
+ * @param {boolean} [alwaysLink]
  */
-async function attachmentToEvent(mentions, attachment) {
+async function attachmentToEvent(mentions, attachment, alwaysLink) {
 	const external_url = dUtils.getPublicUrlForCdn(attachment.url)
 	const emoji =
 		attachment.content_type?.startsWith("image/jp") ? "📸"
@@ -130,7 +131,7 @@ async function attachmentToEvent(mentions, attachment) {
 		}
 	}
 	// for large files, always link them instead of uploading so I don't use up all the space in the content repo
-	else if (attachment.size > reg.ooye.max_file_size) {
+	else if (alwaysLink || attachment.size > reg.ooye.max_file_size) {
 		return {
 			$type: "m.room.message",
 			"m.mentions": mentions,
@@ -228,6 +229,7 @@ async function pollToEvent(poll) {
 		return matrixAnswer;
 	})
 	return {
+		/** @type {"org.matrix.msc3381.poll.start"} */
 		$type: "org.matrix.msc3381.poll.start",
 		"org.matrix.msc3381.poll.start": {
 			question: {
@@ -538,7 +540,7 @@ async function messageToEvent(message, guild, options = {}, di) {
 		//   1. The replied-to event is in a different room to where the reply will be sent (i.e. a room upgrade occurred between)
 		//   2. The replied-to message has no corresponding Matrix event (repliedToUnknownEvent is true)
 		// This branch is optional - do NOT change anything apart from the reply fallback, since it may not be run
-		if ((repliedToEventRow || repliedToUnknownEvent) && options.includeReplyFallback !== false) {
+		if ((repliedToEventRow || repliedToUnknownEvent) && options.includeReplyFallback !== false && events.length === 0) {
 			const latestRoomID = repliedToEventRow ? select("channel_room", "room_id", {channel_id: repliedToEventRow.channel_id}).pluck().get() : null
 			if (latestRoomID !== repliedToEventRow?.room_id) repliedToEventInDifferentRoom = true
 
@@ -741,7 +743,7 @@ async function messageToEvent(message, guild, options = {}, di) {
 
 	// Then attachments
 	if (message.attachments) {
-		const attachmentEvents = await Promise.all(message.attachments.map(attachmentToEvent.bind(null, mentions)))
+		const attachmentEvents = await Promise.all(message.attachments.map(attachment => attachmentToEvent(mentions, attachment)))
 
 		// Try to merge attachment events with the previous event
 		// This means that if the attachments ended up as a text link, and especially if there were many of them, the events will be joined together.
@@ -756,6 +758,101 @@ async function messageToEvent(message, guild, options = {}, di) {
 		}
 	}
 
+	// Then components
+	if (message.components?.length) {
+		const stack = [new mxUtils.MatrixStringBuilder()]
+		/** @param {DiscordTypes.APIMessageComponent} component */
+		async function processComponent(component) {
+			// Standalone components
+			if (component.type === DiscordTypes.ComponentType.TextDisplay) {
+				const {body, html} = await transformContent(component.content)
+				stack[0].addParagraph(body, html)
+			}
+			else if (component.type === DiscordTypes.ComponentType.Separator) {
+				stack[0].addParagraph("----", "<hr>")
+			}
+			else if (component.type === DiscordTypes.ComponentType.File) {
+				const ev = await attachmentToEvent({}, {...component.file, filename: component.name, size: component.size}, true)
+				stack[0].addLine(ev.body, ev.formatted_body)
+			}
+			else if (component.type === DiscordTypes.ComponentType.MediaGallery) {
+				const description = component.items.length === 1 ? component.items[0].description || "Image:" : "Image gallery:"
+				const images = component.items.map(item => {
+					const publicURL = dUtils.getPublicUrlForCdn(item.media.url)
+					return {
+						url: publicURL,
+						estimatedName: item.media.url.match(/\/([^/?]+)(\?|$)/)?.[1] || publicURL
+					}
+				})
+				stack[0].addLine(`🖼️ ${description} ${images.map(i => i.url).join(", ")}`, tag`🖼️ ${description} $${images.map(i => tag`<a href="${i.url}">${i.estimatedName}</a>`).join(", ")}`)
+			}
+			// string select, text input, user select, role select, mentionable select, channel select
+
+			// Components that can have things nested
+			else if (component.type === DiscordTypes.ComponentType.Container) {
+				// May contain action row, text display, section, media gallery, separator, file
+				stack.unshift(new mxUtils.MatrixStringBuilder())
+				for (const innerComponent of component.components) {
+					await processComponent(innerComponent)
+				}
+				let {body, formatted_body} = stack.shift().get()
+				body = body.split("\n").map(l => "| " + l).join("\n")
+				formatted_body = `<blockquote>${formatted_body}</blockquote>`
+				if (stack[0].body) stack[0].body += "\n\n"
+				stack[0].add(body, formatted_body)
+			}
+			else if (component.type === DiscordTypes.ComponentType.Section) {
+				// May contain text display, possibly more in the future
+				// Accessory may be button or thumbnail
+				stack.unshift(new mxUtils.MatrixStringBuilder())
+				for (const innerComponent of component.components) {
+					await processComponent(innerComponent)
+				}
+				if (component.accessory) {
+					stack.unshift(new mxUtils.MatrixStringBuilder())
+					await processComponent(component.accessory)
+					const {body, formatted_body} = stack.shift().get()
+					stack[0].addLine(body, formatted_body)
+				}
+				const {body, formatted_body} = stack.shift().get()
+				stack[0].addParagraph(body, formatted_body)
+			}
+			else if (component.type === DiscordTypes.ComponentType.ActionRow) {
+				const linkButtons = component.components.filter(c => c.type === DiscordTypes.ComponentType.Button && c.style === DiscordTypes.ButtonStyle.Link)
+				if (linkButtons.length) {
+					stack[0].addLine("")
+					for (const linkButton of linkButtons) {
+						await processComponent(linkButton)
+					}
+				}
+			}
+			// Components that can only be inside things
+			else if (component.type === DiscordTypes.ComponentType.Thumbnail) {
+				// May only be a section accessory
+				stack[0].add(`🖼️ ${component.media.url}`, tag`🖼️ <a href="${component.media.url}">${component.media.url}</a>`)
+			}
+			else if (component.type === DiscordTypes.ComponentType.Button) {
+				// May only be a section accessory or in an action row (up to 5)
+				if (component.style === DiscordTypes.ButtonStyle.Link) {
+					if (component.label) {
+						stack[0].add(`[${component.label} ${component.url}] `, tag`<a href="${component.url}">${component.label}</a> `)
+					} else {
+						stack[0].add(component.url)
+					}
+				}
+			}
+
+			// Not handling file upload or label because they are modal-only components
+		}
+
+		for (const component of message.components) {
+			await processComponent(component)
+		}
+
+		const {body, formatted_body} = stack[0].get()
+		await addTextEvent(body, formatted_body, "m.text")
+	}
+
 	// Then polls
 	if (message.poll) {
 		const pollEvent = await pollToEvent(message.poll)
@@ -773,7 +870,7 @@ async function messageToEvent(message, guild, options = {}, di) {
 			continue // Matrix's own URL previews are fine for images.
 		}
 
-		if (embed.type === "video" && !embed.title && !embed.description && message.content.includes(embed.video?.url)) {
+		if (embed.type === "video" && !embed.title && message.content.includes(embed.video?.url)) {
 			continue // Doesn't add extra information and the direct video URL is already there.
 		}
 
@@ -904,7 +1001,7 @@ async function messageToEvent(message, guild, options = {}, di) {
 	// Strip formatted_body where equivalent to body
 	if (!options.alwaysReturnFormattedBody) {
 		for (const event of events) {
-			if (["m.text", "m.notice"].includes(event.msgtype) && event.body === event.formatted_body) {
+			if (event.$type === "m.room.message" && "msgtype" in event && ["m.text", "m.notice"].includes(event.msgtype) && event.body === event.formatted_body) {
 				delete event.format
 				delete event.formatted_body
 			}

src/d2m/converters/message-to-event.test.components.js

@@ -0,0 +1,79 @@
+const {test} = require("supertape")
+const {messageToEvent} = require("./message-to-event")
+const data = require("../../../test/data")
+
+test("message2event components: pk question mark output", async t => {
+	const events = await messageToEvent(data.message_with_components.pk_question_mark_response, data.guild.general, {})
+	t.deepEqual(events, [{
+		$type: "m.room.message",
+		body:
+			"| ### Lillith (INX)"
+			+ "\n| "
+			+ "\n| **Display name:** Lillith (she/her)"
+			+ "\n| **Pronouns:** She/Her"
+			+ "\n| **Message count:** 3091"
+			+ "\n| 🖼️ https://files.inx.moe/p/cdn/lillith.webp"
+			+ "\n| "
+			+ "\n| ----"
+			+ "\n| "
+			+ "\n| **Proxy tags:**"
+			+ "\n| ``l;text``"
+			+ "\n| ``l:text``"
+			+ "\n| ``l.text``"
+			+ "\n| ``textl.``"
+			+ "\n| ``textl;``"
+			+ "\n| ``textl:``"
+			+ "\n"
+			+ "\n-# System ID: `xffgnx` ∙ Member ID: `pphhoh`"
+			+ "\n-# Created: 2025-12-31 03:16:45 UTC"
+			+ "\n[View on dashboard https://dash.pluralkit.me/profile/m/pphhoh] "
+			+ "\n"
+			+ "\n----"
+			+ "\n"
+			+ "\n| **System:** INX (`xffgnx`)"
+			+ "\n| **Member:** Lillith (`pphhoh`)"
+			+ "\n| **Sent by:** infinidoge1337 (@unknown-user:)"
+			+ "\n| "
+			+ "\n| **Account Roles (7)**"
+			+ "\n| §b, !, ‼, Ears Port Ping, Ears Update Ping, Yttr Ping, unsup Ping"
+			+ "\n| 🖼️ https://files.inx.moe/p/cdn/lillith.webp"
+			+ "\n| "
+			+ "\n| ----"
+			+ "\n| "
+			+ "\n| Same hat"
+			+ "\n| 🖼️ Image: https://bridge.example.org/download/discordcdn/934955898965729280/1466556006527012987/image.png"
+			+ "\n"
+			+ "\n-# Original Message ID: 1466556003645657118 · <t:1769724599:f>",
+		format: "org.matrix.custom.html",
+		formatted_body: "<blockquote>"
+			+ "<h3>Lillith (INX)</h3>"
+			+ "<p><strong>Display name:</strong> Lillith (she/her)"
+			+ "<br><strong>Pronouns:</strong> She/Her"
+			+ "<br><strong>Message count:</strong> 3091</p>"
+			+ `🖼️ <a href="https://files.inx.moe/p/cdn/lillith.webp">https://files.inx.moe/p/cdn/lillith.webp</a>`
+			+ "<hr>"
+			+ "<p><strong>Proxy tags:</strong>"
+			+ "<br><code>l;text</code>"
+			+ "<br><code>l:text</code>"
+			+ "<br><code>l.text</code>"
+			+ "<br><code>textl.</code>"
+			+ "<br><code>textl;</code>"
+			+ "<br><code>textl:</code></p></blockquote>"
+			+ "<p><sub>System ID: <code>xffgnx</code> ∙ Member ID: <code>pphhoh</code></sub><br>"
+			+ "<sub>Created: 2025-12-31 03:16:45 UTC</sub></p>"
+			+ `<a href="https://dash.pluralkit.me/profile/m/pphhoh">View on dashboard</a> `
+			+ "<hr>"
+			+ "<blockquote><p><strong>System:</strong> INX (<code>xffgnx</code>)"
+			+ "<br><strong>Member:</strong> Lillith (<code>pphhoh</code>)"
+			+ "<br><strong>Sent by:</strong> infinidoge1337 (@unknown-user:)"
+			+ "<br><br><strong>Account Roles (7)</strong>"
+			+ "<br>§b, !, ‼, Ears Port Ping, Ears Update Ping, Yttr Ping, unsup Ping</p>"
+			+ `🖼️ <a href="https://files.inx.moe/p/cdn/lillith.webp">https://files.inx.moe/p/cdn/lillith.webp</a>`
+			+ "<hr>"
+			+ "<p>Same hat</p>"
+			+ `🖼️ Image: <a href="https://bridge.example.org/download/discordcdn/934955898965729280/1466556006527012987/image.png">image.png</a></blockquote>`
+			+ "<p><sub>Original Message ID: 1466556003645657118 · &lt;t:1769724599:f&gt;</sub></p>",
+		"m.mentions": {},
+		msgtype: "m.text",
+	}])
+})

src/d2m/event-dispatcher.js

@@ -274,7 +274,7 @@ module.exports = {
 		// Based on looking at data they've sent me over the gateway, this is the best way to check for meaningful changes.
 		// If the message content is a string then it includes all interesting fields and is meaningful.
 		// Otherwise, if there are embeds, then the system generated URL preview embeds.
-		if (!(typeof data.content === "string" || "embeds" in data)) return
+		if (!(typeof data.content === "string" || "embeds" in data || "components" in data)) return
 
 		if (dUtils.isEphemeralMessage(data)) return // Ephemeral messages are for the eyes of the receiver only!
 
@@ -282,8 +282,10 @@ module.exports = {
 		const {affected, row} = await speedbump.maybeDoSpeedbump(data.channel_id, data.id)
 		if (affected) return
 
+		if (!row) {
 			// Check that the sending-to room exists, and deal with Eventual Consistency(TM)
 			if (retrigger.eventNotFoundThenRetrigger(data.id, module.exports.MESSAGE_UPDATE, client, data)) return
+		}
 
 		/** @type {DiscordTypes.GatewayMessageCreateDispatchData} */
 		// @ts-ignore

src/discord/interactions/ping.js

@@ -0,0 +1,201 @@
+// @ts-check
+
+const assert = require("assert").strict
+const Ty = require("../../types")
+const DiscordTypes = require("discord-api-types/v10")
+const {discord, sync, select, from} = require("../../passthrough")
+const {id: botID} = require("../../../addbot")
+const {InteractionMethods} = require("snowtransfer")
+
+/** @type {import("../../matrix/api")} */
+const api = sync.require("../../matrix/api")
+/** @type {import("../../matrix/utils")} */
+const utils = sync.require("../../matrix/utils")
+/** @type {import("../../web/routes/guild")} */
+const webGuild = sync.require("../../web/routes/guild")
+
+/**
+ * @param {DiscordTypes.APIApplicationCommandAutocompleteGuildInteraction} interaction
+ * @param {{api: typeof api}} di
+ * @returns {AsyncGenerator<{[k in keyof InteractionMethods]?: Parameters<InteractionMethods[k]>[2]}>}
+ */
+async function* _interactAutocomplete({data, channel}, {api}) {
+	function exit() {
+		return {createInteractionResponse: {
+			/** @type {DiscordTypes.InteractionResponseType.ApplicationCommandAutocompleteResult} */
+			type: DiscordTypes.InteractionResponseType.ApplicationCommandAutocompleteResult,
+			data: {
+				choices: []
+			}
+		}}
+	}
+
+	// Check it was used in a bridged channel
+	const roomID = select("channel_room", "room_id", {channel_id: channel.id}).pluck().get()
+	if (!roomID) return yield exit()
+
+	// Check we are in fact autocompleting the first option, the user
+	if (!data.options?.[0] || data.options[0].type !== DiscordTypes.ApplicationCommandOptionType.String || !data.options[0].focused) {
+		return yield exit()
+	}
+
+	/** @type {{displayname: string | null, mxid: string}[][]} */
+	const providedMatches = []
+
+	const input = data.options[0].value
+	if (input === "") {
+		const events = await api.getEvents(roomID, "b", {limit: 40})
+		const recents = new Set(events.chunk.map(e => e.sender))
+		const matches = select("member_cache", ["mxid", "displayname"], {room_id: roomID}, "AND displayname IS NOT NULL LIMIT 25").all()
+		matches.sort((a, b) => +recents.has(b.mxid) - +recents.has(a.mxid))
+		providedMatches.push(matches)
+	} else if (input.startsWith("@")) { // only autocomplete mxids
+		const query = input.replaceAll(/[%_$]/g, char => `$${char}`) + "%"
+		const matches = select("member_cache", ["mxid", "displayname"], {room_id: roomID}, "AND mxid LIKE ? ESCAPE '$' LIMIT 25").all(query)
+		providedMatches.push(matches)
+	} else {
+		const query = "%" + input.replaceAll(/[%_$]/g, char => `$${char}`) + "%"
+		const displaynameMatches = select("member_cache", ["mxid", "displayname"], {room_id: roomID}, "AND displayname IS NOT NULL AND displayname LIKE ? ESCAPE '$' LIMIT 25").all(query)
+		// prioritise matches closer to the start
+		displaynameMatches.sort((a, b) => {
+			let ai = a.displayname.toLowerCase().indexOf(input.toLowerCase())
+			if (ai === -1) ai = 999
+			let bi = b.displayname.toLowerCase().indexOf(input.toLowerCase())
+			if (bi === -1) bi = 999
+			return ai - bi
+		})
+		providedMatches.push(displaynameMatches)
+		let mxidMatches = select("member_cache", ["mxid", "displayname"], {room_id: roomID}, "AND displayname IS NOT NULL AND mxid LIKE ? ESCAPE '$' LIMIT 25").all(query)
+		mxidMatches = mxidMatches.filter(match => {
+			// don't include matches in domain part of mxid
+			if (!match.mxid.match(/^[^:]*/)?.includes(query)) return false
+			if (displaynameMatches.some(m => m.mxid === match.mxid)) return false
+			return true
+		})
+		providedMatches.push(mxidMatches)
+	}
+
+	// merge together
+	let matches = providedMatches.flat()
+
+	// don't include bot
+	matches = matches.filter(m => m.mxid !== utils.bot)
+
+	// remove duplicates and count up to 25
+	const limitedMatches = []
+	const seen = new Set()
+	for (const match of matches) {
+		if (limitedMatches.length >= 25) break
+		if (seen.has(match.mxid)) continue
+		limitedMatches.push(match)
+		seen.add(match.mxid)
+	}
+
+	yield {createInteractionResponse: {
+		type: DiscordTypes.InteractionResponseType.ApplicationCommandAutocompleteResult,
+		data: {
+			choices: limitedMatches.map(row => ({name: (row.displayname || row.mxid).slice(0, 100), value: row.mxid.slice(0, 100)}))
+		}
+	}}
+}
+
+/**
+ * @param {DiscordTypes.APIChatInputApplicationCommandGuildInteraction & {channel: DiscordTypes.APIGuildTextChannel}} interaction
+ * @param {{api: typeof api}} di
+ * @returns {AsyncGenerator<{[k in keyof InteractionMethods]?: Parameters<InteractionMethods[k]>[2]}>}
+ */
+async function* _interactCommand({data, channel, guild_id}, {api}) {
+	const roomID = select("channel_room", "room_id", {channel_id: channel.id}).pluck().get()
+	if (!roomID) {
+		return yield {createInteractionResponse: {
+			type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+			data: {
+				flags: DiscordTypes.MessageFlags.Ephemeral,
+				content: "This channel isn't bridged to Matrix."
+			}
+		}}
+	}
+
+	assert(data.options?.[0]?.type === DiscordTypes.ApplicationCommandOptionType.String)
+	const mxid = data.options[0].value
+	if (!mxid.match(/^@[^:]*:./)) {
+		return yield {createInteractionResponse: {
+			type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+			data: {
+				flags: DiscordTypes.MessageFlags.Ephemeral,
+				// embeds: [{
+				// 	description: "⚠️ To use /ping, you must select an option from autocomplete, or type a full Matrix ID.",
+				// 	footer: {
+				// 		text: "Tip: This command is not necessary. You can also ping Matrix users just by typing @their name in your message. It won't look like anything, but it does go through."
+				// 	}
+				// }]
+				content: "⚠️ To use `/ping`, you must select an option from autocomplete, or type a full Matrix ID.\n> Tip: This command is not necessary. You can also ping Matrix users just by typing @their name in your message. It won't look like anything, but it does go through."
+			}
+		}}
+	}
+
+	yield {createInteractionResponse: {
+		type: DiscordTypes.InteractionResponseType.DeferredChannelMessageWithSource
+	}}
+
+	try {
+		/** @type {Ty.Event.M_Room_Member} */
+		var member = await api.getStateEvent(roomID, "m.room.member", mxid)
+	} catch (e) {}
+
+	if (!member || member.membership !== "join") {
+		const inChannels = discord.guildChannelMap.get(guild_id)
+			.map(cid => discord.channels.get(cid))
+			.sort((a, b) => webGuild._getPosition(a, discord.channels) - webGuild._getPosition(b, discord.channels))
+			.filter(channel => from("channel_room").join("member_cache", "room_id").select("mxid").where({channel_id: channel.id, mxid}).get())
+		if (inChannels.length) {
+			return yield {editOriginalInteractionResponse: {
+				content: `That person isn't in this channel. They have only joined the following channels:\n${inChannels.map(c => `<#${c.id}>`).join(" • ")}\nYou can ask them to join this channel with \`/invite\`.`,
+			}}
+		} else {
+			return yield {editOriginalInteractionResponse: {
+				content: "That person isn't in this channel. You can invite them with `/invite`."
+			}}
+		}
+	}
+
+	yield {editOriginalInteractionResponse: {
+		content: "@" + (member.displayname || mxid)
+	}}
+
+	yield {createFollowupMessage: {
+		flags: DiscordTypes.MessageFlags.Ephemeral | DiscordTypes.MessageFlags.IsComponentsV2,
+		components: [{
+			type: DiscordTypes.ComponentType.Container,
+			components: [{
+				type: DiscordTypes.ComponentType.TextDisplay,
+				content: "Tip: This command is not necessary. You can also ping Matrix users just by typing @their name in your message. It won't look like anything, but it does go through."
+			}]
+		}]
+	}}
+}
+
+/* c8 ignore start */
+
+/** @param {(DiscordTypes.APIChatInputApplicationCommandGuildInteraction & {channel: DiscordTypes.APIGuildTextChannel}) | DiscordTypes.APIApplicationCommandAutocompleteGuildInteraction} interaction */
+async function interact(interaction) {
+	if (interaction.type === DiscordTypes.InteractionType.ApplicationCommandAutocomplete) {
+		for await (const response of _interactAutocomplete(interaction, {api})) {
+			if (response.createInteractionResponse) {
+				await discord.snow.interaction.createInteractionResponse(interaction.id, interaction.token, response.createInteractionResponse)
+			}
+		}
+	} else {
+		for await (const response of _interactCommand(interaction, {api})) {
+			if (response.createInteractionResponse) {
+				await discord.snow.interaction.createInteractionResponse(interaction.id, interaction.token, response.createInteractionResponse)
+			} else if (response.editOriginalInteractionResponse) {
+				await discord.snow.interaction.editOriginalInteractionResponse(botID, interaction.token, response.editOriginalInteractionResponse)
+			} else if (response.createFollowupMessage) {
+				await discord.snow.interaction.createFollowupMessage(botID, interaction.token, response.createFollowupMessage)
+			}
+		}
+	}
+}
+
+module.exports.interact = interact

src/discord/register-interactions.js

@@ -10,6 +10,7 @@ const permissions = sync.require("./interactions/permissions.js")
 const reactions = sync.require("./interactions/reactions.js")
 const privacy = sync.require("./interactions/privacy.js")
 const poll = sync.require("./interactions/poll.js")
+const ping = sync.require("./interactions/ping.js")
 
 // User must have EVERY permission in default_member_permissions to be able to use the command
 
@@ -38,6 +39,20 @@ discord.snow.interaction.bulkOverwriteApplicationCommands(id, [{
 			description: "The Matrix user to invite, e.g. @username:example.org",
 			name: "user"
 		}
+	],
+}, {
+	name: "ping",
+	contexts: [DiscordTypes.InteractionContextType.Guild],
+	type: DiscordTypes.ApplicationCommandType.ChatInput,
+	description: "Ping a Matrix user.",
+	options: [
+		{
+			type: DiscordTypes.ApplicationCommandOptionType.String,
+			description: "Display name or ID of the Matrix user",
+			name: "user",
+			autocomplete: true,
+			required: true
+		}
 	]
 }, {
 	name: "privacy",
@@ -94,6 +109,8 @@ async function dispatchInteraction(interaction) {
 				await permissions.interactEdit(interaction)
 			} else if (interactionId === "Reactions") {
 				await reactions.interact(interaction)
+			} else if (interactionId === "ping") {
+				await ping.interact(interaction)
 			} else if (interactionId === "privacy") {
 				await privacy.interact(interaction)
 			} else {

src/matrix/api.js

@@ -128,6 +128,19 @@ async function getEventForTimestamp(roomID, ts) {
 	return root
 }
 
+/**
+ * @param {string} roomID
+ * @param {"b" | "f"} dir
+ * @param {{from?: string, limit?: any}} [pagination]
+ * @param {any} [filter]
+ */
+async function getEvents(roomID, dir, pagination = {}, filter) {
+	filter = filter && JSON.stringify(filter)
+	/** @type {Ty.Pagination<Ty.Event.Outer<any>>} */
+	const root = await mreq.mreq("GET", path(`/client/v3/rooms/${roomID}/messages`, null, {...pagination, dir, filter}))
+	return root
+}
+
 /**
  * @param {string} roomID
  * @returns {Promise<Ty.Event.StateOuter<any>[]>}
@@ -583,6 +596,7 @@ module.exports.leaveRoom = leaveRoom
 module.exports.leaveRoomWithReason = leaveRoomWithReason
 module.exports.getEvent = getEvent
 module.exports.getEventForTimestamp = getEventForTimestamp
+module.exports.getEvents = getEvents
 module.exports.getAllState = getAllState
 module.exports.getStateEvent = getStateEvent
 module.exports.getStateEventOuter = getStateEventOuter

src/matrix/utils.js

@@ -106,7 +106,8 @@ class MatrixStringBuilder {
 			if (formattedBody == undefined) formattedBody = body
 			if (this.body.length && this.body.slice(-1) !== "\n") this.body += "\n\n"
 			this.body += body
-			formattedBody = `<p>${formattedBody}</p>`
+			const match = formattedBody.match(/^<([a-zA-Z]+[a-zA-Z0-9]*)/)
+			if (!match || !BLOCK_ELEMENTS.includes(match[1].toUpperCase())) formattedBody = `<p>${formattedBody}</p>`
 			this.formattedBody += formattedBody
 		}
 		return this

test/data.js

@@ -4975,6 +4975,194 @@ module.exports = {
 			tts: false
 		}
 	},
+	message_with_components: {
+		pk_question_mark_response: {
+			type: 0,
+			content: '',
+			mentions: [],
+			mention_roles: [],
+			attachments: [],
+			embeds: [],
+			timestamp: '2026-01-30T01:20:07.488000+00:00',
+			edited_timestamp: null,
+			flags: 32768,
+			author: {
+				id: '772659086046658620',
+				username: 'cadence.worm',
+				avatar: '466df0c98b1af1e1388f595b4c1ad1b9',
+				discriminator: '0',
+				public_flags: 0,
+				flags: 0,
+				banner: null,
+				accent_color: null,
+				global_name: 'cadence',
+				avatar_decoration_data: null,
+				collectibles: null,
+				display_name_styles: null,
+				banner_color: null,
+				clan: {
+					identity_guild_id: '532245108070809601',
+					identity_enabled: true,
+					tag: 'doll',
+					badge: 'dba08126b4e810a0e096cc7cd5bc37f0'
+				},
+				primary_guild: {
+					identity_guild_id: '532245108070809601',
+					identity_enabled: true,
+					tag: 'doll',
+					badge: 'dba08126b4e810a0e096cc7cd5bc37f0'
+				}
+			},
+			components: [
+				{
+					type: 17,
+					id: 1,
+					accent_color: 1042150,
+					components: [
+						{
+							type: 9,
+							id: 2,
+							components: [
+								{ type: 10, id: 3, content: '### Lillith (INX)' },
+								{
+									type: 10,
+									id: 4,
+									content: '**Display name:** Lillith (she/her)\n' +
+									'**Pronouns:** She/Her\n' +
+									'**Message count:** 3091'
+								}
+							],
+							accessory: {
+								type: 11,
+								id: 5,
+								media: {
+									id: '1466603856149610687',
+									url: 'https://files.inx.moe/p/cdn/lillith.webp',
+									proxy_url: 'https://images-ext-1.discordapp.net/external/Kn5b32mM4o8AAQbq0k39KOzp9-fy6D1tWKvK_XI27LI/https/files.inx.moe/p/cdn/lillith.webp',
+									width: 256,
+									height: 256,
+									placeholder: 'KVoKJwSnt7lZl5ecj1mal5eGWjAHZXIA',
+									placeholder_version: 1,
+									content_scan_metadata: { version: 4, flags: 0 },
+									content_type: 'image/webp',
+									loading_state: 2,
+									flags: 0
+								},
+								description: null,
+								spoiler: false
+							}
+						},
+						{ type: 14, id: 6, spacing: 1, divider: true },
+						{
+							type: 10,
+							id: 7,
+							content: '**Proxy tags:**\n' +
+							'``l;text``\n' +
+							'``l:text``\n' +
+							'``l.text``\n' +
+							'``textl.``\n' +
+							'``textl;``\n' +
+							'``textl:``'
+						}
+					],
+					spoiler: false
+				},
+				{
+					type: 9,
+					id: 8,
+					components: [
+						{
+							type: 10,
+							id: 9,
+							content: '-# System ID: `xffgnx` ∙ Member ID: `pphhoh`\n' +
+							'-# Created: 2025-12-31 03:16:45 UTC'
+						}
+					],
+					accessory: {
+						type: 2,
+						id: 10,
+						style: 5,
+						label: 'View on dashboard',
+						url: 'https://dash.pluralkit.me/profile/m/pphhoh'
+					}
+				},
+				{ type: 14, id: 11, spacing: 1, divider: true },
+				{
+					type: 17,
+					id: 12,
+					accent_color: null,
+					components: [
+						{
+							type: 9,
+							id: 13,
+							components: [
+								{
+									type: 10,
+									id: 14,
+									content: '**System:** INX (`xffgnx`)\n' +
+									'**Member:** Lillith (`pphhoh`)\n' +
+									'**Sent by:** infinidoge1337 (<@197126718400626689>)\n' +
+									'\n' +
+									'**Account Roles (7)**\n' +
+									'§b, !, ‼, Ears Port Ping, Ears Update Ping, Yttr Ping, unsup Ping'
+								}
+							],
+							accessory: {
+								type: 11,
+								id: 15,
+								media: {
+									id: '1466603856149610689',
+									url: 'https://files.inx.moe/p/cdn/lillith.webp',
+									proxy_url: 'https://images-ext-1.discordapp.net/external/Kn5b32mM4o8AAQbq0k39KOzp9-fy6D1tWKvK_XI27LI/https/files.inx.moe/p/cdn/lillith.webp',
+									width: 256,
+									height: 256,
+									placeholder: 'KVoKJwSnt7lZl5ecj1mal5eGWjAHZXIA',
+									placeholder_version: 1,
+									content_scan_metadata: { version: 4, flags: 0 },
+									content_type: 'image/webp',
+									loading_state: 2,
+									flags: 0
+								},
+								description: null,
+								spoiler: false
+							}
+						},
+						{ type: 14, id: 16, spacing: 2, divider: true },
+						{ type: 10, id: 17, content: 'Same hat' },
+						{
+							type: 12,
+							id: 18,
+							items: [
+								{
+									media: {
+										id: '1466603856149610690',
+										url: 'https://cdn.discordapp.com/attachments/934955898965729280/1466556006527012987/image.png?ex=697d2c37&is=697bdab7&hm=09c5028be61ce01ebbdda5c79c42e4dc10d053ce0c4b12c9d84135a0708e9db6&',
+										proxy_url: 'https://media.discordapp.net/attachments/934955898965729280/1466556006527012987/image.png?ex=697d2c37&is=697bdab7&hm=09c5028be61ce01ebbdda5c79c42e4dc10d053ce0c4b12c9d84135a0708e9db6&',
+										width: 285,
+										height: 126,
+										placeholder: '0PcBA4BqSIl9t/dnn9f0rm0=',
+										placeholder_version: 1,
+										content_scan_metadata: { version: 4, flags: 0 },
+										content_type: 'image/png',
+										loading_state: 2,
+										flags: 0
+									},
+									description: null,
+									spoiler: false
+								}
+							]
+						}
+					],
+					spoiler: false
+				},
+				{
+					type: 10,
+					id: 19,
+					content: '-# Original Message ID: 1466556003645657118 · <t:1769724599:f>'
+				}
+			]
+		}
+	},
 	message_update: {
 		edit_by_webhook: {
 			application_id: "684280192553844747",

test/test.js

@@ -160,8 +160,9 @@ file._actuallyUploadDiscordFileToMxc = function(url, res) { throw new Error(`Not
 	require("../src/d2m/converters/emoji-to-key.test")
 	require("../src/d2m/converters/lottie.test")
 	require("../src/d2m/converters/message-to-event.test")
-	require("../src/d2m/converters/message-to-event.embeds.test")
-	require("../src/d2m/converters/message-to-event.pk.test")
+	require("../src/d2m/converters/message-to-event.test.components")
+	require("../src/d2m/converters/message-to-event.test.embeds")
+	require("../src/d2m/converters/message-to-event.test.pk")
 	require("../src/d2m/converters/pins-to-list.test")
 	require("../src/d2m/converters/remove-reaction.test")
 	require("../src/d2m/converters/thread-to-announcement.test")