Highly experimental message interactions

discord/interactions/permissions.js

@@ -0,0 +1,108 @@
+// @ts-check
+
+const DiscordTypes = require("discord-api-types/v10")
+const Ty = require("../../types")
+const {discord, sync, db, select, from} = require("../../passthrough")
+const assert = require("assert/strict")
+
+/** @type {import("../../matrix/api")} */
+const api = sync.require("../../matrix/api")
+
+/** @param {DiscordTypes.APIContextMenuGuildInteraction} interaction */
+async function interact({data, channel, id, token, guild_id}) {
+	const row = select("event_message", ["event_id", "source"], {message_id: data.target_id}).get()
+	assert(row)
+
+	// Can't operate on Discord users
+	if (row.source === 1) { // discord
+		return discord.snow.interaction.createInteractionResponse(id, token, {
+			type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+			data: {
+				content: `This command is only meaningful for Matrix users.`,
+				flags: DiscordTypes.MessageFlags.Ephemeral
+			}
+		})
+	}
+
+	// Get the message sender, the person that will be inspected/edited
+	const eventID = row.event_id
+	const roomID = select("channel_room", "room_id", {channel_id: channel.id}).pluck().get()
+	assert(roomID)
+	const event = await api.getEvent(roomID, eventID)
+	const sender = event.sender
+
+	// Get the space, where the power levels will be inspected/edited
+	const spaceID = select("guild_space", "space_id", {guild_id}).pluck().get()
+	assert(spaceID)
+
+	// Get the power level
+	/** @type {Ty.Event.M_Power_Levels} */
+	const powerLevelsContent = await api.getStateEvent(spaceID, "m.room.power_levels", "")
+	const userPower = powerLevelsContent.users?.[event.sender] || 0
+
+	// Administrators equal to the bot cannot be demoted
+	if (userPower >= 100) {
+		return discord.snow.interaction.createInteractionResponse(id, token, {
+			type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+			data: {
+				content: `\`${sender}\` has administrator permissions. This cannot be edited.`,
+				flags: DiscordTypes.MessageFlags.Ephemeral
+			}
+		})
+	}
+
+	await discord.snow.interaction.createInteractionResponse(id, token, {
+		type: DiscordTypes.InteractionResponseType.ChannelMessageWithSource,
+		data: {
+			content: `Showing permissions for \`${sender}\`. Click to edit.`,
+			flags: DiscordTypes.MessageFlags.Ephemeral,
+			components: [
+				{
+					type: DiscordTypes.ComponentType.ActionRow,
+					components: [
+						{
+							type: DiscordTypes.ComponentType.StringSelect,
+							custom_id: "permissions_edit",
+							options: [
+								{
+									label: "Default",
+									value: "default",
+									default: userPower < 50
+								}, {
+									label: "Moderator",
+									value: "moderator",
+									default: userPower >= 50 && userPower < 100
+								}
+							]
+						}
+					]
+				}
+			]
+		}
+	})
+}
+
+/** @param {DiscordTypes.APIMessageComponentSelectMenuInteraction} interaction */
+async function interactEdit({data, channel, id, token, guild_id, message}) {
+	// Get the person that will be inspected/edited
+	const mxid = message.content.match(/`(@(?:[^:]+):(?:[a-z0-9:-]+\.[a-z0-9.:-]+))`/)?.[1]
+	assert(mxid)
+
+	// Get the space, where the power levels will be inspected/edited
+	const spaceID = select("guild_space", "space_id", {guild_id}).pluck().get()
+	assert(spaceID)
+
+	// Do it
+	const permission = data.values[0]
+	const power = permission === "moderator" ? 50 : 0
+	await api.setUserPower(spaceID, mxid, power)
+	// TODO: Cascade permissions through room hierarchy (make a helper for this already, geez...)
+
+	// ACK
+	await discord.snow.interaction.createInteractionResponse(id, token, {
+		type: DiscordTypes.InteractionResponseType.DeferredMessageUpdate
+	})
+}
+
+module.exports.interact = interact
+module.exports.interactEdit = interactEdit