new: add !count command

packages/dota/locales/en/translation.json

@@ -90,6 +90,14 @@
     "total_one": "",
     "total_other": "Playing with {{count}} players from last game."
   },
+  "connections": {
+    "overlay_zero": "No one connected to the overlay right now",
+    "overlay_one": "{{count}} streamer using the overlay",
+    "overlay_other": "{{count}} streamers using the overlay",
+    "gsi_zero": "No one using the Dotabod GSI right now",
+    "gsi_one": "{{count}} streamer connected to Dotabod GSI",
+    "gsi_other": "{{count}} streamers connected to Dotabod GSI"
+  },
   "lastgamescore": {
     "double": "Double down",
     "duration": "{{minutes}}m long",

packages/dota/src/twitch/commandLoader.ts

@@ -2,6 +2,7 @@ import './commands/apm.js'
 import './commands/avg.js'
 import './commands/beta.js'
 import './commands/commands.js'
+import './commands/count.js'
 import './commands/d2pt.js'
 import './commands/delay.js'
 import './commands/dotabod.js'

packages/dota/src/twitch/commands/count.ts

@@ -0,0 +1,25 @@
+import { t } from 'i18next'
+
+import { server } from '../../dota/index.js'
+import { gsiHandlers } from '../../dota/lib/consts.js'
+import { chatClient } from '../chatClient.js'
+import commandHandler, { MessageType } from '../lib/CommandHandler.js'
+
+commandHandler.registerCommand('count', {
+  handler: async (message: MessageType, args: string[]) => {
+    const sockets = (await server.io.fetchSockets()).length
+    const gsiSize = gsiHandlers.size
+
+    const bothParts = `${t('connections.gsi', {
+      lng: message.channel.client.locale,
+      channel: message.channel.name,
+      count: gsiSize,
+    })} · ${t('connections.overlay', {
+      lng: message.channel.client.locale,
+      channel: message.channel.name,
+      count: sockets,
+    })}`
+
+    chatClient.say(message.channel.name, bothParts)
+  },
+})