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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)
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