Added react command

src/modules/commands/reactCommand.ts

@@ -1,13 +1,49 @@
-import { SlashCommandBuilder, type ChatInputCommandInteraction } from "discord.js";
+import { SlashCommandBuilder, type ChatInputCommandInteraction, type TextChannel } from "discord.js";
 import { type Command } from "../../types/Command";
 import type CrystalClient from "../../types/CrystalClient";
 
 module.exports = {
     name: 'react',
     data: new SlashCommandBuilder()
         .setName("react")
-        .setDescription("React to a message using the bot."),
+        .setDescription("React to a message using the bot.")
+        .addChannelOption((option) =>
+            option
+                .setName('channel')
+                .setDescription('The channel you want to react to.')
+                .setRequired(true))
+        .addStringOption((option) =>
+            option
+                .setName('message_id')
+                .setDescription('The message you want to react to using a message id.')
+                .setRequired(true))
+        .addStringOption((option) =>
+            option
+                .setName('emoji')
+                .setDescription('The emoji you want to react with.')
+                .setRequired(true)),
     execute: async function (interaction: ChatInputCommandInteraction, client: CrystalClient) {
-
+        const textChannel = interaction.options.getChannel('channel') as TextChannel
+        const messageId = interaction.options.getString('message_id')
+        const reactEmoji = interaction.options.getString('emoji')
+
+        try {
+            if ((reactEmoji !== null) && (messageId !== null)) {
+                const targetMessage = await textChannel.messages.fetch(messageId);
+
+                void await targetMessage.react(reactEmoji)
+                void await interaction.reply({
+                    content: "The reaction was successful.",
+                    ephemeral: true
+                })
+            } else {
+                void await interaction.reply({
+                    content: "The reaction failed.",
+                    ephemeral: true
+                })
+            }
+        } catch (error) {
+            console.error()
+        }
     }
 } satisfies Command