From 09d069dec102b35b26fb75ccc943dcd46a0e581c Mon Sep 17 00:00:00 2001
From: Niels Simenon <niels@unknown.name>
Date: Wed, 2 Nov 2022 01:20:19 +0100
Subject: [PATCH] Help module can give game-specific help.

---
 src/games/help.js | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/games/help.js b/src/games/help.js
index 7ea950d..6cc0b3a 100755
--- a/src/games/help.js
+++ b/src/games/help.js
@@ -3,13 +3,41 @@
 const config = require('config');
 const { version } = require('../../package.json');
 
+const style = require('../utils/style');
+
+function capitalize(string) {
+	if (typeof string !== 'string') {
+		return string;
+	}
+
+	return `${string.slice(0, 1).toUpperCase()}${string.slice(1)}`;
+}
+
 function onCommand(args, context) {
+	if (context.subcommand) {
+		const game = context.games[context.subcommand];
+
+		if (game?.help) {
+			context.sendMessage(`${style.bold(`${capitalize(game.name || game.key)}:`)} ${game.help}`, context.room.id, { styleCommands: true });
+			return;
+		}
+
+		if (game) {
+			context.sendMessage(`No help available for '${capitalize(game.name || game.key)}'.`, context.room.id, { styleCommands: true });
+			return;
+		}
+
+		context.sendMessage(`No game '${capitalize(context.subcommand)}' known.`, context.room.id, { styleCommands: true });
+
+		return;
+	}
+
 	const commandsByGame = Object.entries(context.games)
 		.filter(([command, game]) => !command.includes('-') && !game.restricted)
 		.reduce((acc, [command, game]) => ({ ...acc, [game.name]: [...(acc[game.name] || []), command] }), {});
 
 	const commands = Object.entries(commandsByGame)
-		.map(([gameName, gameCommands]) => `${gameName.slice(0, 1).toUpperCase()}${gameName.slice(1)}: ${gameCommands.map((command) => `${config.prefix}${command}`).join(', ')}`)
+		.map(([gameName, gameCommands]) => `${capitalize(gameName)}: ${gameCommands.map((command) => `${config.prefix}${command}`).join(', ')}`)
 		.join(' | ');
 
 	context.sendMessage(`${commands}`, context.room.id, { styleCommands: true });