added user-fetching functionality on build

scripts/buildHelpers.js

@@ -0,0 +1,34 @@
+const DEFAULT_AVATAR_MODULO = 5
+module.exports = {
+  splitHash(identifier) {
+    const hashLocation = identifier.lastIndexOf("#")
+
+    if (hashLocation === -1) {
+      throw Error(`Invalid name format ${identifier}`)
+    }
+
+    const name = identifier.slice(0, hashLocation)
+    const hash = identifier.slice(hashLocation + 1)
+    return [name, hash]
+  },
+  getDefaultAvatar(name) {
+    const [_, hash] = this.splitHash(hashLocation)
+
+    const avatar = Number(hash) % DEFAULT_AVATAR_MODULO
+    return `https://cdn.discordapp.com/embed/avatars/${avatar}.png`
+  },
+  resolveAuthor(users, author) {
+    const target = users.find(user => user.identifier === author)
+    const [name, hash] = this.splitHash(author)
+    const avatar = target ? target.avatar : this.getDefaultAvatar(author)
+
+    return {
+      name,
+      hash,
+      avatar,
+    }
+  },
+  resolveAuthors(users, authors) {
+    return authors.map(author => this.resolveAuthor(users, author))
+  },
+}

scripts/fetchUsers.js

@@ -0,0 +1,42 @@
+// This script will be ran periodically through CI
+// don't touch it
+const Discord = require("discord.js")
+const fs = require("fs")
+const { Readable, Writable } = require("stream")
+
+const client = new Discord.Client()
+
+const { BOT_TOKEN } = process.env
+const TPH = "244230771232079873"
+const DESTINATION = "./users.json"
+
+if (!BOT_TOKEN) {
+  throw Error("Missing BOT_TOKEN environment variable")
+}
+
+const writeS = (content, dest) => {
+  const source = new Readable()
+  source.push(JSON.stringify(content))
+  source.push(null)
+  source.pipe(dest)
+}
+
+client.once("ready", async () => {
+  console.log("Bot ready, fetching user list...")
+  const tph = client.guilds.get(TPH)
+  if (!tph) {
+    throw Error("Bot is not in TPH, cannot fetch users")
+  }
+  const guild = await tph.fetchMembers()
+  const memberInfo = guild.members.map(member => ({
+    identifier: `${member.user.username}#${member.user.discriminator}`,
+    avatar: member.user.displayAvatarURL,
+  }))
+  const wrs = fs.createWriteStream(DESTINATION)
+  console.log(`Fetched ${memberInfo.length} users, writing to ${DESTINATION}`)
+  writeS(memberInfo, wrs)
+  process.exit(0)
+})
+
+console.log("Attempting to log in...")
+client.login(process.env.BOT_TOKEN)