[add]: updater

1 files changed, 161 insertions, 0 deletions

diff --git a/bot/app.js b/bot/app.js
new file mode 100644
index 0000000..d25b3b6
--- /dev/null
+++ b/bot/app.js
@@ -0,0 +1,161 @@
+const { Client, Events, GatewayIntentBits } = require("discord.js")
+const axios = require("axios")
+const fs = require("fs-extra")
+const path = require("path")
+const config = require("../config/config.json")
+const api = require("../config/api.json")
+
+const { channel_id, minecraft_version, modrinth_mods } = config
+const { token } = api
+
+const cacheFile = path.join(__dirname, "../cache/mod_versions.json")
+const client = new Client({ intents: [GatewayIntentBits.Guilds] })
+
+const LoadCache = async () =>
+{
+  try
+  {
+    if (await fs.pathExists(cacheFile))
+      return JSON.parse(await fs.readFile(cacheFile, "utf8"))
+  } catch (err)
+  {
+    console.error("[Cache] Failed to read cache:", err)
+  }
+  return {}
+}
+
+const SaveCache = async (cache) =>
+{
+  try
+  {
+    await fs.ensureDir(path.dirname(cacheFile))
+    await fs.writeFile(cacheFile, JSON.stringify(cache, null, 2))
+  } catch (err)
+  {
+    console.error("[Cache] Failed to save cache:", err)
+  }
+}
+
+const GetCompatibleModVersion = async (slug, targetMinecraftVersion) =>
+{
+  try
+  {
+    const res = await axios.get(`https://api.modrinth.com/v2/project/${slug}/version`)
+    const fabricVersions = res.data.filter(v => v.loaders.includes("fabric"))
+    if (fabricVersions.length === 0) 
+      return null
+
+    const compatible = fabricVersions.find(v => v.game_versions.includes(targetMinecraftVersion))
+    const latest = fabricVersions.sort((a, b) =>
+      new Date(b.date_published) - new Date(a.date_published)
+    )[0]
+
+    return { latest, compatible: compatible || null }
+  } catch (err)
+  {
+    console.error(`[Modrinth] Error fetching ${slug}:`, err.message)
+    return null
+  }
+}
+
+const CheckModUpdates = async () =>
+{
+  console.log("[Check] Checking for mod compatibility...")
+  const cache = await LoadCache()
+  const newCache = { ...cache }
+  const compatibleReleased = []
+  const waitingUpdate = []
+  const newlyCompatible = []
+
+  for (const slug of modrinth_mods)
+  {
+    const modData = await GetCompatibleModVersion(slug, minecraft_version)
+    if (!modData) continue
+
+    const { latest, compatible } = modData
+    const latestId = latest.id
+    const cachedId = cache[slug]
+
+    if (compatible)
+    {
+      compatibleReleased.push({ slug })
+      newCache[slug] = latestId
+
+      if (!cachedId || cachedId !== latestId)
+      {
+        newlyCompatible.push({ slug })
+        console.log(`[Update] ${slug} is now compatible with Minecraft ${minecraft_version}`)
+      }
+    } else
+    {
+      waitingUpdate.push({ slug })
+      console.log(`[Check] ${slug} is waiting for a compatible version`)
+    }
+  }
+
+  await SaveCache(newCache)
+  return { compatibleReleased, waitingUpdate, newlyCompatible }
+}
+
+const SendUpdateMessages = async (channel, compatibleReleased, waitingUpdate, newlyCompatible) =>
+{
+  if (!compatibleReleased.length && !waitingUpdate.length)
+  {
+    console.log("[Update]: No mods to report.")
+    return
+  }
+
+  let message = `**Mod Compatibility Check — Minecraft ${minecraft_version}**\n\n`
+
+  if (newlyCompatible.length > 0)
+  {
+    message += `**🎉 Mods Recently Updated:**\n`
+    for (const { slug } of newlyCompatible)
+      message += `✅ ${slug}\n`
+    message += `\n`
+  }
+
+  const stillCompatible = compatibleReleased.filter(
+    m => !newlyCompatible.find(n => n.slug === m.slug)
+  )
+  if (stillCompatible.length > 0)
+  { 
+    message += `**🟢 Mods Compatible:**\n`
+    for (const { slug } of stillCompatible)
+      message += `✅ ${slug}\n`
+    message += `\n`
+  }
+
+  if (waitingUpdate.length > 0)
+  {
+    message += `**⏳ Mods Waiting on Update:**\n`
+    for (const { slug } of waitingUpdate)
+      message += `❌ ${slug}\n`
+    message += `\n`
+  }
+
+  await channel.send({ content: message, allowedMentions: { parse: [] }, flags: 4 })
+  console.log(`[Discord] Sent update summary (${newlyCompatible.length} updated, ${stillCompatible.length} compatible, ${waitingUpdate.length} waiting).`)
+}
+
+client.once(Events.ClientReady, async readyClient =>
+{
+  console.log(`[OK] Logged in as ${readyClient.user.tag}`)
+
+  const channel = await client.channels.fetch(channel_id).catch(() => null)
+  if (!channel) {
+    console.error("❌ Could not find channel ID:", channel_id)
+    return
+  }
+
+  const { compatibleReleased, waitingUpdate, newlyCompatible } = await CheckModUpdates()
+  await SendUpdateMessages(channel, compatibleReleased, waitingUpdate, newlyCompatible)
+
+  setInterval(async () =>
+  {
+    const { compatibleReleased, waitingUpdate, newlyCompatible } = await CheckModUpdates()
+    await SendUpdateMessages(channel, compatibleReleased, waitingUpdate, newlyCompatible)
+  }, 60 * 60 * 1000)
+})
+
+client.login(token)