feat: add the new private-chat command (#14)

* feat: add the new private-chat command

the new command is available using ?private-chat

* fix: should show both warnings

* fix: review

* fix: remove Set because can cause problems with server restart

* Update src/commands/command-fns/private-chat.js

Co-authored-by: Kent C. Dodds <me+github@kentcdodds.com>

src/features/private-chat/cleanup.js

@@ -0,0 +1,110 @@
+const {getSend, sleep} = require('../utils')
+
+async function cleanup(guild) {
+  const categoryPrivateChat = guild.channels.cache.find(
+    ({name, type}) =>
+      type === 'category' && name.toLowerCase().includes('private chat'),
+  )
+
+  const warningStep = 1000 * 60 * 5
+  const maxExistingTime = 1000 * 60 * 60
+  const maxInactiveTime = 1000 * 60 * 10
+  const forceDelayTime = 1000 * 60 * 2
+  const eolReason = 'deleted for end of life 👻'
+  const inactivityReason = 'deleted for inactivity 🚶‍♀️'
+
+  const allActivePrivateChannels = guild.channels.cache.filter(
+    channel =>
+      channel.type === 'text' &&
+      channel.parentID === categoryPrivateChat.id &&
+      channel.name.includes('-private-') &&
+      !channel.deleted,
+  )
+
+  allActivePrivateChannels.forEach(async channel => {
+    const channelCreateDate = channel.createdAt
+    const lastMessageDate = channel.lastMessage?.createdAt ?? channelCreateDate
+    const timeSinceChannelCreation = new Date() - channelCreateDate
+    const timeSinceLastMessage = new Date() - lastMessageDate
+    const messages = Array.from((await channel.messages.fetch()).values())
+    const hasInactiveWarned = messages.some(message => {
+      return (
+        message.content.includes('5 minutes') &&
+        message.content.includes(inactivityReason)
+      )
+    })
+    const hasEOLWarned = messages.some(
+      message =>
+        message.content.includes('5 minutes') &&
+        message.content.includes(eolReason),
+    )
+    const isGettingDeleted = messages.some(message =>
+      message.content.includes(
+        'This channel is getting deleted for the following reason',
+      ),
+    )
+    const send = getSend(channel)
+    if (
+      timeSinceChannelCreation > maxExistingTime ||
+      timeSinceLastMessage > maxInactiveTime
+    ) {
+      let reason
+      if (timeSinceChannelCreation > maxExistingTime) {
+        reason = eolReason
+      } else {
+        reason = inactivityReason
+      }
+      if (!isGettingDeleted) {
+        await send(
+          `
+  This channel is getting deleted for the following reason: ${reason}
+  
+  Goodbye 👋
+          `.trim(),
+        )
+        // Give just a while for the users to understand that the channel will be deleted soon
+        await sleep(10000)
+        await channel.delete(reason)
+      }
+      // After two minute from deletion we try to delate the channel again
+      // Maybe the server was stopped and the previous sleep was not finished
+      if (
+        timeSinceChannelCreation - maxExistingTime > forceDelayTime ||
+        timeSinceLastMessage - maxInactiveTime > forceDelayTime
+      ) {
+        await channel.delete(reason)
+      }
+
+      return
+    }
+
+    if (
+      (timeSinceChannelCreation > maxExistingTime - warningStep ||
+        timeSinceLastMessage > maxInactiveTime - warningStep) &&
+      !hasInactiveWarned &&
+      !hasEOLWarned
+    ) {
+      let reason
+      if (
+        timeSinceChannelCreation > maxExistingTime - warningStep &&
+        !hasEOLWarned
+      ) {
+        reason = eolReason
+      } else if (
+        timeSinceLastMessage > maxInactiveTime - warningStep &&
+        !hasInactiveWarned
+      ) {
+        reason = inactivityReason
+      } else {
+        return
+      }
+      await send(
+        `
+This channel will be deleted in 5 minutes for the following reason: ${reason}
+        `.trim(),
+      )
+    }
+  })
+}
+
+module.exports = {cleanup}

src/features/private-chat/index.js

@@ -0,0 +1,13 @@
+const privateChat = {
+  ...require('./cleanup'),
+}
+
+function setup(client) {
+  setInterval(() => {
+    client.guilds.cache.forEach(guild => {
+      privateChat.cleanup(guild)
+    })
+  }, 5000)
+}
+
+module.exports = {...privateChat, setup}