out-of-your-element/d2m/converters/remove-reaction.js

88 lines
3 KiB
JavaScript

// @ts-check
const Ty = require("../../types")
const DiscordTypes = require("discord-api-types/v10")
const passthrough = require("../../passthrough")
const {discord, sync, select} = passthrough
/** @type {import("../../m2d/converters/utils")} */
const utils = sync.require("../../m2d/converters/utils")
/**
* @typedef ReactionRemoveRequest
* @prop {string} eventID
* @prop {string | null} mxid
* @prop {BigInt} [hash]
*/
/**
* @param {DiscordTypes.GatewayMessageReactionRemoveDispatchData} data
* @param {Ty.Pagination<Ty.Event.Outer<Ty.Event.M_Reaction>>} relations
* @param {string} key
*/
function removeReaction(data, relations, key) {
/** @type {ReactionRemoveRequest[]} */
const removals = []
const wantToRemoveMatrixReaction = data.user_id === discord.application.id
for (const event of relations.chunk) {
const eventID = event.event_id
if (event.content["m.relates_to"].key === key) {
const lookingAtMatrixReaction = !utils.eventSenderIsFromDiscord(event.sender)
if (lookingAtMatrixReaction && wantToRemoveMatrixReaction) {
// We are removing a Matrix user's reaction, so we need to redact from the correct user ID (not @_ooye_matrix_bridge).
// Even though the bridge bot only reacted once on Discord-side, multiple Matrix users may have
// reacted on Matrix-side. Semantically, we want to remove the reaction from EVERY Matrix user.
// Also need to clean up the database.
const hash = utils.getEventIDHash(event.event_id)
removals.push({eventID, mxid: null, hash})
}
if (!lookingAtMatrixReaction && !wantToRemoveMatrixReaction) {
// We are removing a Discord user's reaction, so we just make the sim user remove it.
const mxid = select("sim", "mxid", {user_id: data.user_id}).pluck().get()
if (mxid === event.sender) {
removals.push({eventID, mxid})
}
}
}
}
return removals
}
/**
* @param {DiscordTypes.GatewayMessageReactionRemoveEmojiDispatchData} data
* @param {Ty.Pagination<Ty.Event.Outer<Ty.Event.M_Reaction>>} relations
* @param {string} key
*/
function removeEmojiReaction(data, relations, key) {
/** @type {ReactionRemoveRequest[]} */
const removals = []
for (const event of relations.chunk) {
const eventID = event.event_id
if (event.content["m.relates_to"].key === key) {
const mxid = utils.eventSenderIsFromDiscord(event.sender) ? event.sender : null
removals.push({eventID, mxid})
}
}
return removals
}
/**
* @param {DiscordTypes.GatewayMessageReactionRemoveAllDispatchData} data
* @param {Ty.Pagination<Ty.Event.Outer<Ty.Event.M_Reaction>>} relations
* @returns {ReactionRemoveRequest[]}
*/
function removeAllReactions(data, relations) {
return relations.chunk.map(event => {
const eventID = event.event_id
const mxid = utils.eventSenderIsFromDiscord(event.sender) ? event.sender : null
return {eventID, mxid}
})
}
module.exports.removeReaction = removeReaction
module.exports.removeEmojiReaction = removeEmojiReaction
module.exports.removeAllReactions = removeAllReactions