Add countChars function

commands/countChars.ts

@@ -7,10 +7,24 @@ module.exports = {
 		.addStringOption( option =>
 			option.setName('string')
 			.setDescription("String to count characters in")
-			.setRequired(true)
-			),
+			.setRequired(false)
+			)
+			.addStringOption( option =>
+				option.setName('messageid')
+				.setDescription("Message ID of message to count characters in")
+				.setRequired(false)
+				),
 	async execute(interaction) {
-		var inputString = interaction.options.getString('string');
+		var inputString;
+		
+		if (interaction.options.getString('string') !== null) {
+			inputString = interaction.options.getString('string');
+		} else if (interaction.options.getString('messageid') !== null) {
+			var messageId = interaction.options.getString('messageid');
+			const messagefromId = await client.channels.cache.get(interaction.channel.id).messages.fetch(messageId);
+			inputString = messagefromId.content;
+		}
+		
 		await interaction.reply("Input: `" + inputString + "`\n" + "Output: " + codeBlock("", countChars(inputString)));
         console.log("User " + interaction.user.tag + " ran /count_chars");
 	},