From e45f055493926198210b2df54115d137e5f0bf8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tr=C3=A8sAbhi?= <43380238+tresabhi@users.noreply.github.com>
Date: Sun, 21 Jan 2024 18:43:07 -0600
Subject: [PATCH] feat: permissions command

---
 docs/guide/permissions.md             |  7 -----
 src/commands/about.ts                 |  2 --
 src/commands/permissions.ts           | 42 +++++++++++++++++++++++++++
 src/events/interactionCreate/index.ts |  2 ++
 4 files changed, 44 insertions(+), 9 deletions(-)
 delete mode 100644 docs/guide/permissions.md
 create mode 100644 src/commands/permissions.ts

diff --git a/docs/guide/permissions.md b/docs/guide/permissions.md
deleted file mode 100644
index 5a21542e3..000000000
--- a/docs/guide/permissions.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# Permissions
-
-The following Discord permissions are required by the bot to ensure full functionality:
-
-- Manage nicknames
-- Read messages / view channels
-- Attach files
diff --git a/src/commands/about.ts b/src/commands/about.ts
index 94b60fbf0..fd97d6ed7 100644
--- a/src/commands/about.ts
+++ b/src/commands/about.ts
@@ -6,7 +6,6 @@ import { COMMANDS_RAW, CommandRegistry } from '../events/interactionCreate';
 
 const RAW_PATH = `https://raw.githubusercontent.com/tresabhi/blitzkrieg/main/docs/`;
 const DOCS = {
-  permissions: 'guide/permissions',
   embeds: 'guide/embeds',
   introduction: 'guide/introduction',
   invite: 'guide/invite',
@@ -14,7 +13,6 @@ const DOCS = {
   creators: 'guide/creators',
 };
 const DOC_DESCRIPTIONS: Record<keyof typeof DOCS, string> = {
-  permissions: 'The permissions needed for the bot to function',
   embeds: 'How embeds work',
   introduction: 'About the bot',
   invite: 'How to invite the bot',
diff --git a/src/commands/permissions.ts b/src/commands/permissions.ts
new file mode 100644
index 000000000..b8f29f563
--- /dev/null
+++ b/src/commands/permissions.ts
@@ -0,0 +1,42 @@
+import { SlashCommandBuilder } from 'discord.js';
+import { CommandRegistry } from '../events/interactionCreate';
+
+export const permissionsCommand: CommandRegistry = {
+  inProduction: true,
+  inPublic: true,
+
+  command: new SlashCommandBuilder()
+    .setName('permissions')
+    .setDescription('Checks wether the bot has the required permissions'),
+
+  async handler(interaction) {
+    // friday the 13th permissions easter egg
+    const isFridayThe13th =
+      new Date().getDay() === 5 && new Date().getDate() === 13;
+    const permissions = [
+      [
+        interaction.appPermissions?.has('ViewChannel'),
+        'View channels: needed for the refresh button to work',
+      ],
+      [
+        interaction.appPermissions?.has('ReadMessageHistory'),
+        'Read message history: also needed for the refresh button to work',
+      ],
+      [
+        interaction.appPermissions?.has('AttachFiles'),
+        'Attach files: needed for image-based commands to work',
+      ],
+    ];
+    const body = permissions
+      .map(([hasPermission, description]) => {
+        if (hasPermission) {
+          return `${isFridayThe13th ? '😇' : '✅'} ${description}`;
+        } else {
+          return `${isFridayThe13th ? '💀' : '❌'} ${description}`;
+        }
+      })
+      .join('\n');
+
+    return `# Permissions\n${body}`;
+  },
+};
diff --git a/src/events/interactionCreate/index.ts b/src/events/interactionCreate/index.ts
index 3e7393199..390055141 100644
--- a/src/events/interactionCreate/index.ts
+++ b/src/events/interactionCreate/index.ts
@@ -23,6 +23,7 @@ import { fullStatsCommand } from '../../commands/fullStats';
 import { inactiveCommand } from '../../commands/inactive';
 import { verifyCommand } from '../../commands/link';
 import { ownedTanksCommand } from '../../commands/ownedTanks';
+import { permissionsCommand } from '../../commands/permissions';
 import { pingCommand } from '../../commands/ping';
 import { playerAchievementsCommand } from '../../commands/playerAchievements';
 import { playerInfoCommand } from '../../commands/playerInfo';
@@ -90,6 +91,7 @@ export type CommandRegistry =
 const rest = new REST().setToken(secrets.DISCORD_TOKEN);
 
 export const COMMANDS_RAW: CommandRegistry[] = [
+  permissionsCommand,
   debugCommand,
   eligibleCommand,
   aboutCommand,