110 lines
3.4 KiB
JavaScript
110 lines
3.4 KiB
JavaScript
// @ts-check
|
|
|
|
const fetch = require("node-fetch").default
|
|
|
|
const passthrough = require("../passthrough")
|
|
const {sync, db, select} = passthrough
|
|
/** @type {import("./mreq")} */
|
|
const mreq = sync.require("./mreq")
|
|
|
|
const DISCORD_IMAGES_BASE = "https://cdn.discordapp.com"
|
|
const IMAGE_SIZE = 1024
|
|
|
|
/** @type {Map<string, Promise<string>>} */
|
|
const inflight = new Map()
|
|
|
|
/**
|
|
* @param {string} path
|
|
*/
|
|
async function uploadDiscordFileToMxc(path) {
|
|
let url
|
|
if (path.startsWith("http")) {
|
|
// TODO: this is cheating to make seed.js easier. due a refactor or a name change since it's not soley for discord?
|
|
// possibly could be good to save non-discord external URLs under a user-specified key rather than simply using the url?
|
|
url = path
|
|
} else {
|
|
url = DISCORD_IMAGES_BASE + path
|
|
}
|
|
|
|
// Are we uploading this file RIGHT NOW? Return the same inflight promise with the same resolution
|
|
const existingInflight = inflight.get(url)
|
|
if (existingInflight) {
|
|
return existingInflight
|
|
}
|
|
|
|
// Has this file already been uploaded in the past? Grab the existing copy from the database.
|
|
const existingFromDb = select("file", "mxc_url", "WHERE discord_url = ?").pluck().get(url)
|
|
if (typeof existingFromDb === "string") {
|
|
return existingFromDb
|
|
}
|
|
|
|
// Download from Discord
|
|
const promise = fetch(url, {}).then(/** @param {import("node-fetch").Response} res */ async res => {
|
|
// Upload to Matrix
|
|
const root = await module.exports._actuallyUploadDiscordFileToMxc(url, res)
|
|
|
|
// Store relationship in database
|
|
db.prepare("INSERT INTO file (discord_url, mxc_url) VALUES (?, ?)").run(url, root.content_uri)
|
|
inflight.delete(url)
|
|
|
|
return root.content_uri
|
|
})
|
|
inflight.set(url, promise)
|
|
|
|
return promise
|
|
}
|
|
|
|
async function _actuallyUploadDiscordFileToMxc(url, res) {
|
|
const body = res.body
|
|
/** @type {import("../types").R.FileUploaded} */
|
|
const root = await mreq.mreq("POST", "/media/v3/upload", body, {
|
|
headers: {
|
|
"Content-Type": res.headers.get("content-type")
|
|
}
|
|
})
|
|
return root
|
|
}
|
|
|
|
function guildIcon(guild) {
|
|
return `/icons/${guild.id}/${guild.icon}.png?size=${IMAGE_SIZE}`
|
|
}
|
|
|
|
function userAvatar(user) {
|
|
return `/avatars/${user.id}/${user.avatar}.png?size=${IMAGE_SIZE}`
|
|
}
|
|
|
|
function memberAvatar(guildID, user, member) {
|
|
if (!member.avatar) return userAvatar(user)
|
|
return `/guilds/${guildID}/users/${user.id}/avatars/${member.avatar}.png?size=${IMAGE_SIZE}`
|
|
}
|
|
|
|
function emoji(emojiID, animated) {
|
|
const base = `/emojis/${emojiID}`
|
|
if (animated) return base + ".gif"
|
|
else return base + ".png"
|
|
}
|
|
|
|
const stickerFormat = new Map([
|
|
[1, {label: "PNG", ext: "png", mime: "image/png"}],
|
|
[2, {label: "APNG", ext: "png", mime: "image/apng"}],
|
|
[3, {label: "LOTTIE", ext: "json", mime: "lottie"}],
|
|
[4, {label: "GIF", ext: "gif", mime: "image/gif"}]
|
|
])
|
|
|
|
/** @param {{id: string, format_type: number}} sticker */
|
|
function sticker(sticker) {
|
|
const format = stickerFormat.get(sticker.format_type)
|
|
if (!format) throw new Error(`No such format ${sticker.format_type} for sticker ${JSON.stringify(sticker)}`)
|
|
const ext = format.ext
|
|
return `/stickers/${sticker.id}.${ext}`
|
|
}
|
|
|
|
module.exports.DISCORD_IMAGES_BASE = DISCORD_IMAGES_BASE
|
|
module.exports.guildIcon = guildIcon
|
|
module.exports.userAvatar = userAvatar
|
|
module.exports.memberAvatar = memberAvatar
|
|
module.exports.emoji = emoji
|
|
module.exports.stickerFormat = stickerFormat
|
|
module.exports.sticker = sticker
|
|
module.exports.uploadDiscordFileToMxc = uploadDiscordFileToMxc
|
|
module.exports._actuallyUploadDiscordFileToMxc = _actuallyUploadDiscordFileToMxc
|