Allow member who invited Muse to do initial setup (#561)

src/bot.ts

@@ -152,7 +152,7 @@ export default class {
       spinner.text = '📡 updating permissions...';
       await Promise.all(this.client.guilds.cache.map(async guild => updatePermissionsForGuild(guild)));
 
-      spinner.succeed(`Ready! Invite the bot with https://discordapp.com/oauth2/authorize?client_id=${this.client.user?.id ?? ''}&scope=bot%20applications.commands&permissions=36700160`);
+      spinner.succeed(`Ready! Invite the bot with https://discordapp.com/oauth2/authorize?client_id=${this.client.user?.id ?? ''}&scope=bot%20applications.commands&permissions=36700288`);
     });
 
     this.client.on('error', console.error);

src/events/guild-create.ts

@@ -6,16 +6,30 @@ import Config from '../services/config.js';
 import {prisma} from '../utils/db.js';
 import {REST} from '@discordjs/rest';
 import {Routes} from 'discord-api-types/v9';
+import updatePermissionsForGuild from '../utils/update-permissions-for-guild.js';
 
 export default async (guild: Guild): Promise<void> => {
+  let invitedBy;
+  try {
+    const logs = await guild.fetchAuditLogs({type: 'BOT_ADD'});
+    invitedBy = logs.entries.find(entry => entry.target?.id === guild.client.user?.id)?.executor;
+  } catch {}
+
+  if (!invitedBy) {
+    console.warn(`Could not find user who invited Muse to ${guild.name} from the audit logs.`);
+  }
+
   await prisma.setting.upsert({
     where: {
       guildId: guild.id,
     },
     create: {
       guildId: guild.id,
+      invitedByUserId: invitedBy?.id,
+    },
+    update: {
+      invitedByUserId: invitedBy?.id,
     },
-    update: {},
   });
 
   const config = container.get<Config>(TYPES.Config);
@@ -33,7 +47,12 @@ export default async (guild: Guild): Promise<void> => {
     );
   }
 
-  const owner = await guild.fetchOwner();
+  await updatePermissionsForGuild(guild);
 
-  await owner.send('👋 Hi! Someone (probably you) just invited me to a server you own. I can\'t be used by your server members until you complete setup by running /config set-role in your server.');
+  if (invitedBy) {
+    await invitedBy.send('👋 Hi! You just invited me to a server. I can\'t be used by your server members until you complete setup by running /config set-role in your server.');
+  } else {
+    const owner = await guild.fetchOwner();
+    await owner.send('👋 Hi! Someone (probably you) just invited me to a server you own. I can\'t be used by your server members until you complete setup by running /config set-role in your server.');
+  }
 };

src/utils/update-permissions-for-guild.ts

@@ -26,6 +26,15 @@ const updatePermissionsForGuild = async (guild: Guild) => {
       permission: false,
     },
   ];
+
+  if (settings.invitedByUserId) {
+    permissions.push({
+      id: settings.invitedByUserId,
+      type: 'USER',
+      permission: true,
+    });
+  }
+
   const commands = await guild.commands.fetch();
 
   await guild.commands.permissions.set({fullPermissions: commands.map(command => ({