out-of-your-element/d2m/actions/lottie.js

53 lines
1.7 KiB
JavaScript

// @ts-check
const DiscordTypes = require("discord-api-types/v10")
const Ty = require("../../types")
const assert = require("assert").strict
const passthrough = require("../../passthrough")
const {sync, db, select} = passthrough
/** @type {import("../../matrix/file")} */
const file = sync.require("../../matrix/file")
/** @type {import("../../matrix/mreq")} */
const mreq = sync.require("../../matrix/mreq")
/** @type {import("../converters/lottie")} */
const convertLottie = sync.require("../converters/lottie")
const INFO = {
mimetype: "image/png",
w: convertLottie.SIZE,
h: convertLottie.SIZE
}
/**
* @param {DiscordTypes.APIStickerItem} stickerItem
* @returns {Promise<{mxc_url: string, info: typeof INFO}>}
*/
async function convert(stickerItem) {
// Reuse sticker if already converted and uploaded
const existingMxc = select("lottie", "mxc_url", {sticker_id: stickerItem.id}).pluck().get()
if (existingMxc) return {mxc_url: existingMxc, info: INFO}
// Fetch sticker data from Discord
const res = await fetch(file.DISCORD_IMAGES_BASE + file.sticker(stickerItem))
if (res.status !== 200) throw new Error("Sticker data file not found.")
const text = await res.text()
// Convert to PNG (readable stream)
const readablePng = await convertLottie.convert(text)
// Upload to MXC
/** @type {Ty.R.FileUploaded} */
const root = await mreq.mreq("POST", "/media/v3/upload", readablePng, {
headers: {
"Content-Type": INFO.mimetype
}
})
assert(root.content_uri)
// Save the link for next time
db.prepare("INSERT INTO lottie (sticker_id, mxc_url) VALUES (?, ?)").run(stickerItem.id, root.content_uri)
return {mxc_url: root.content_uri, info: INFO}
}
module.exports.convert = convert