Highly experimental message interactions

discord/interactions/bridge.js

@@ -0,0 +1,121 @@
+// @ts-check
+
+const DiscordTypes = require("discord-api-types/v10")
+const Ty = require("../../types")
+const {discord, sync, db, select, from, as} = require("../../passthrough")
+const assert = require("assert/strict")
+
+/** @type {import("../../matrix/api")} */
+const api = sync.require("../../matrix/api")
+
+/** @type {Map<string, Promise<{name: string, value: string}[]>>} spaceID -> list of rooms */
+const cache = new Map()
+/** @type {Map<string, string>} roomID -> spaceID */
+const reverseCache = new Map()
+
+// Manage clearing the cache
+sync.addTemporaryListener(as, "type:m.room.name", /** @param {Ty.Event.StateOuter<Ty.Event.M_Room_Name>} event */ async event => {
+	if (event.state_key !== "") return
+	const roomID = event.room_id
+	const spaceID = reverseCache.get(roomID)
+	if (!spaceID) return
+	const childRooms = await cache.get(spaceID)
+	if (!childRooms) return
+	if (event.content.name) {
+		const found = childRooms.find(r => r.value === roomID)
+		if (!found) return
+		found.name = event.content.name
+	} else {
+		cache.set(spaceID, Promise.resolve(childRooms.filter(r => r.value !== roomID)))
+		reverseCache.delete(roomID)
+	}
+})
+
+// Manage adding to the cache
+async function getHierarchy(spaceID) {
+	return cache.get(spaceID) || (() => {
+		const entry = (async () => {
+			/** @type {{name: string, value: string}[]} */
+			let childRooms = []
+			/** @type {string | undefined} */
+			let nextBatch = undefined
+			do {
+				/** @type {Ty.HierarchyPagination<Ty.R.Hierarchy>} */
+				const res = await api.getHierarchy(spaceID, {from: nextBatch})
+				for (const room of res.rooms) {
+					if (room.name) {
+						childRooms.push({name: room.name, value: room.room_id})
+						reverseCache.set(room.room_id, spaceID)
+					}
+				}
+				nextBatch = res.next_batch
+			} while (nextBatch)
+			return childRooms
+		})()
+		cache.set(spaceID, entry)
+		return entry
+	})()
+}
+
+/** @param {DiscordTypes.APIApplicationCommandAutocompleteGuildInteraction} interaction */
+async function interactAutocomplete({id, token, data, guild_id}) {
+	const spaceID = select("guild_space", "space_id", {guild_id}).pluck().get()
+	if (!spaceID) {
+		return discord.snow.interaction.createInteractionResponse(id, token, {
+			type: DiscordTypes.InteractionResponseType.ApplicationCommandAutocompleteResult,
+			data: {
+				choices: [
+					{
+						name: `Error: This server needs to be bridged somewhere first...`,
+						value: "baby"
+					}
+				]
+			}
+		})
+	}
+
+	let rooms = await getHierarchy(spaceID)
+	// @ts-ignore
+	rooms = rooms.filter(r => r.name.startsWith(data.options[0].value))
+
+	await discord.snow.interaction.createInteractionResponse(id, token, {
+		type: DiscordTypes.InteractionResponseType.ApplicationCommandAutocompleteResult,
+		data: {
+			choices: rooms
+		}
+	})
+}
+
+/** @param {DiscordTypes.APIChatInputApplicationCommandGuildInteraction} interaction */
+async function interactSubmit({id, token, data, guild_id}) {
+	const spaceID = select("guild_space", "space_id", {guild_id}).pluck().get()
+	if (!spaceID) {
+		return discord.snow.interaction.createInteractionResponse(id, token, {
+			type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+			data: {
+				content: "Error: This server needs to be bridged somewhere first...",
+				flags: DiscordTypes.MessageFlags.Ephemeral
+			}
+		})
+	}
+
+	return discord.snow.interaction.createInteractionResponse(id, token, {
+		type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+		data: {
+			content: "Valid input. This would do something but it isn't implemented yet.",
+			flags: DiscordTypes.MessageFlags.Ephemeral
+		}
+	})
+}
+
+/** @param {DiscordTypes.APIGuildInteraction} interaction */
+async function interact(interaction) {
+	if (interaction.type === DiscordTypes.InteractionType.ApplicationCommandAutocomplete) {
+		return interactAutocomplete(interaction)
+	} else if (interaction.type === DiscordTypes.InteractionType.ApplicationCommand) {
+		// @ts-ignore
+		return interactSubmit(interaction)
+	}
+}
+
+module.exports.interact = interact