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out-of-your-element-fork-th.../d2m/discord-command-handler.js

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// @ts-check
const assert = require("assert").strict
const util = require("util")
const DiscordTypes = require("discord-api-types/v10")
const {discord, sync, db} = require("../passthrough")
/** @type {import("../matrix/api")}) */
const api = sync.require("../matrix/api")
/** @type {import("../matrix/file")} */
const file = sync.require("../matrix/file")
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const PREFIX = "//"
let buttons = []
/**
* @param {string} channelID where to add the button
* @param {string} messageID where to add the button
* @param {string} emoji emoji to add as a button
* @param {string} userID only listen for responses from this user
* @returns {Promise<import("discord-api-types/v10").GatewayMessageReactionAddDispatchData>}
*/
async function addButton(channelID, messageID, emoji, userID) {
await discord.snow.channel.createReaction(channelID, messageID, emoji)
return new Promise(resolve => {
buttons.push({channelID, messageID, userID, resolve, created: Date.now()})
})
}
// Clear out old buttons every so often to free memory
setInterval(() => {
const now = Date.now()
buttons = buttons.filter(b => now - b.created < 2*60*60*1000)
}, 10*60*1000)
/** @param {import("discord-api-types/v10").GatewayMessageReactionAddDispatchData} data */
function onReactionAdd(data) {
const button = buttons.find(b => b.channelID === data.channel_id && b.messageID === data.message_id && b.userID === data.user_id)
if (button) {
buttons = buttons.filter(b => b !== button) // remove button data so it can't be clicked again
button.resolve(data)
}
}
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/**
* @callback CommandExecute
* @param {DiscordTypes.GatewayMessageCreateDispatchData} message
* @param {DiscordTypes.APIGuildTextChannel} channel
* @param {DiscordTypes.APIGuild} guild
* @param {Partial<DiscordTypes.RESTPostAPIChannelMessageJSONBody>} [ctx]
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*/
/**
* @typedef Command
* @property {string[]} aliases
* @property {(message: DiscordTypes.GatewayMessageCreateDispatchData, channel: DiscordTypes.APIGuildTextChannel, guild: DiscordTypes.APIGuild) => Promise<any>} execute
*/
/** @param {CommandExecute} execute */
function replyctx(execute) {
/** @type {CommandExecute} */
return function(message, channel, guild, ctx = {}) {
ctx.message_reference = {
message_id: message.id,
channel_id: channel.id,
guild_id: guild.id,
fail_if_not_exists: false
}
return execute(message, channel, guild, ctx)
}
}
/** @type {Command[]} */
const commands = [{
aliases: ["icon", "avatar", "roomicon", "roomavatar", "channelicon", "channelavatar"],
execute: replyctx(
async (message, channel, guild, ctx) => {
// Guard
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const roomID = db.prepare("SELECT room_id FROM channel_room WHERE channel_id = ?").pluck().get(channel.id)
if (!roomID) return discord.snow.channel.createMessage(channel.id, {
...ctx,
content: "This channel isn't bridged to the other side."
})
// Current avatar
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const avatarEvent = await api.getStateEvent(roomID, "m.room.avatar", "")
const avatarURLParts = avatarEvent?.url.match(/^mxc:\/\/([^/]+)\/(\w+)$/)
let currentAvatarMessage =
( avatarURLParts ? `Current room-specific avatar: https://matrix.cadence.moe/_matrix/media/r0/download/${avatarURLParts[1]}/${avatarURLParts[2]}`
: "No avatar. Now's your time to strike. Use `//icon` again with a link or upload to set the room-specific avatar.")
// Next potential avatar
const nextAvatarURL = message.attachments.find(a => a.content_type?.startsWith("image/"))?.url || message.content.match(/https?:\/\/[^ ]+\.[^ ]+\.(?:png|jpg|jpeg|webp)\b/)?.[0]
let nextAvatarMessage =
( nextAvatarURL ? `\nYou want to set it to: ${nextAvatarURL}\nHit ✅ to make it happen.`
: "")
const sent = await discord.snow.channel.createMessage(channel.id, {
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...ctx,
content: currentAvatarMessage + nextAvatarMessage
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})
if (nextAvatarURL) {
addButton(channel.id, sent.id, "✅", message.author.id).then(async data => {
const mxcUrl = await file.uploadDiscordFileToMxc(nextAvatarURL)
await api.sendState(roomID, "m.room.avatar", "", {
url: mxcUrl
})
db.prepare("UPDATE channel_room SET custom_avatar = ? WHERE channel_id = ?").run(mxcUrl, channel.id)
await discord.snow.channel.createMessage(channel.id, {
...ctx,
content: "Your creation is unleashed. Any complaints will be redirected to Grelbo."
})
})
}
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}
)
}, {
aliases: ["invite"],
execute: replyctx(
async (message, channel, guild, ctx) => {
return discord.snow.channel.createMessage(channel.id, {
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...ctx,
content: "This command isn't implemented yet."
})
}
)
}]
/** @type {CommandExecute} */
async function execute(message, channel, guild) {
if (!message.content.startsWith(PREFIX)) return
const words = message.content.slice(PREFIX.length).split(" ")
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const commandName = words[0]
const command = commands.find(c => c.aliases.includes(commandName))
if (!command) return
await command.execute(message, channel, guild)
}
module.exports.execute = execute
module.exports.onReactionAdd = onReactionAdd