63 lines
2.3 KiB
JavaScript
63 lines
2.3 KiB
JavaScript
// @ts-check
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const assert = require("assert").strict
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const DiscordTypes = require("discord-api-types/v10")
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const passthrough = require("../../passthrough")
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const {discord, db} = passthrough
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/**
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* Look in the database to find webhook credentials for a channel.
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* (Note that the credentials may be invalid and need to be re-created if the webhook was interfered with from outside.)
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* @param {string} channelID
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* @param {boolean} forceCreate create a new webhook no matter what the database says about the state
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* @returns id and token for a webhook for that channel
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*/
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async function ensureWebhook(channelID, forceCreate = false) {
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if (!forceCreate) {
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/** @type {{id: string, token: string} | null} */
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const row = db.prepare("SELECT webhook_id as id, webhook_token as token FROM webhook WHERE channel_id = ?").get(channelID)
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if (row) {
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return {created: false, ...row}
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}
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}
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// If we got here, we need to create a new webhook.
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const webhook = await discord.snow.webhook.createWebhook(channelID, {name: "Out Of Your Element: Matrix Bridge"})
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assert(webhook.token)
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db.prepare("REPLACE INTO webhook (channel_id, webhook_id, webhook_token) VALUES (?, ?, ?)").run(channelID, webhook.id, webhook.token)
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return {
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id: webhook.id,
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token: webhook.token,
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created: true
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}
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}
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/**
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* @param {string} channelID
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* @param {(webhook: import("../../types").WebhookCreds) => Promise<T>} callback
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* @returns Promise<T>
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* @template T
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*/
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async function withWebhook(channelID, callback) {
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const webhook = await ensureWebhook(channelID, false)
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return callback(webhook).catch(e => {
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console.error(e)
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// TODO: check if the error was webhook-related and if webhook.created === false, then: const webhook = ensureWebhook(channelID, true); return callback(webhook)
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throw new Error(e)
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})
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}
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/**
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* @param {string} channelID
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* @param {DiscordTypes.RESTPostAPIWebhookWithTokenJSONBody & {files?: {name: string, file: Buffer}[]}} data
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*/
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async function sendMessageWithWebhook(channelID, data) {
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const result = await withWebhook(channelID, async webhook => {
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return discord.snow.webhook.executeWebhook(webhook.id, webhook.token, data, {wait: true, disableEveryone: true})
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})
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return result
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}
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module.exports.ensureWebhook = ensureWebhook
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module.exports.withWebhook = withWebhook
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module.exports.sendMessageWithWebhook = sendMessageWithWebhook
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