Capacity Context Modify Command (#35)

* add: modify capacity command

* update: version increment

src/commands/capacity.ts

@@ -0,0 +1,33 @@
+import { ChannelType, Client, CommandInteraction, ApplicationCommandOptionType } from 'discord.js'
+import { SlashCommand } from '../utils/commands.js'
+import { openFile } from '../utils/jsonHandler.js'
+
+export const Capacity: SlashCommand = {
+    name: 'modify-capacity',
+    description: 'number of messages bot will hold for context.',
+
+    // set available user options to pass to the command
+    options: [
+        {
+            name: 'context-capacity',
+            description: 'a number to set capacity',
+            type: ApplicationCommandOptionType.Number,
+            required: true
+        }
+    ],
+
+    // Query for message information and set the style
+    run: async (client: Client, interaction: CommandInteraction) => {
+        // fetch channel and message
+        const channel = await client.channels.fetch(interaction.channelId)
+        if (!channel || channel.type !== ChannelType.GuildText) return
+
+        // set state of bot chat features
+        openFile('config.json', interaction.commandName, interaction.options.get('context-capacity')?.value)
+
+        interaction.reply({
+            content: `Message History Capacity has been set to \`${interaction.options.get('context-capacity')?.value}\``,
+            ephemeral: true
+        })
+    }
+}