From af5e4c78b5d67186797c06252401f1bb755fd96d Mon Sep 17 00:00:00 2001
From: Mathias Magnusson <mathias@magnusson.space>
Date: Sat, 13 Dec 2025 01:08:57 +0100
Subject: refactor

---
 commands.ts | 215 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 215 insertions(+)
 create mode 100644 commands.ts

(limited to 'commands.ts')

diff --git a/commands.ts b/commands.ts
new file mode 100644
index 0000000..df78f60
--- /dev/null
+++ b/commands.ts
@@ -0,0 +1,215 @@
+import {
+    ActionRowBuilder,
+    ButtonBuilder,
+    ButtonStyle,
+    ChannelType,
+    PermissionFlagsBits,
+    SlashCommandBuilder,
+    SlashCommandStringOption,
+    type ButtonInteraction,
+    type ChatInputCommandInteraction,
+} from "discord.js";
+
+export let slashCommands = [
+    {
+        slashCommand: new SlashCommandBuilder()
+            .setName("new")
+            .setDescription("Create a new CTF")
+            .addStringOption(
+                new SlashCommandStringOption()
+                    .setName("name")
+                    .setDescription("Name for the new CTF")
+                    .setRequired(true)
+            ),
+        handler: newCtf,
+    },
+    {
+        slashCommand: new SlashCommandBuilder()
+            .setName("archive")
+            .setDescription("Make this CTF category read-only for everyone"),
+        handler: makeCtfCategoryReadonly,
+    },
+];
+
+export let buttonCommands = {
+    join: {
+        prefix: "ctf-category:",
+        handler: handleJoinCtfButton,
+    },
+} as const;
+
+async function newCtf(interaction: ChatInputCommandInteraction) {
+    if (!interaction.guild) {
+        await interaction.reply({
+            content: "This command can only be used inside a server.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    let name = interaction.options.getString("name", true);
+    await interaction.deferReply({ flags: "Ephemeral" });
+
+    let category = await interaction.guild.channels.create({
+        name,
+        type: ChannelType.GuildCategory,
+        permissionOverwrites: [
+            {
+                id: interaction.guild.roles.everyone,
+                deny: [PermissionFlagsBits.ViewChannel],
+            }
+        ],
+    });
+
+    await Promise.all([
+        await interaction.guild.channels.create({
+            name: "info",
+            type: ChannelType.GuildText,
+            parent: category.id,
+            position: 1,
+        }),
+        await interaction.guild.channels.create({
+            name: "general",
+            type: ChannelType.GuildText,
+            parent: category.id,
+            position: 2,
+        }),
+        await interaction.guild.channels.create({
+            name: "challs",
+            type: ChannelType.GuildForum,
+            parent: category.id,
+            position: 3,
+        }),
+    ]);
+
+    let commandChannel = (interaction.channelId && await interaction.guild.channels.fetch(interaction.channelId));
+
+    if (!commandChannel || !commandChannel.isTextBased())
+        throw new Error("Wth is this channel?");
+
+    await commandChannel.send({
+        components: [
+            new ActionRowBuilder<ButtonBuilder>().addComponents(
+                new ButtonBuilder()
+                    .setCustomId(`${buttonCommands.join.prefix}${category.id}`)
+                    .setLabel(`Join ${name}`)
+                    .setStyle(ButtonStyle.Primary),
+            ),
+        ],
+    });
+
+    await interaction.editReply(
+        `Created ${category.name}.`,
+    );
+}
+
+async function makeCtfCategoryReadonly(interaction: ChatInputCommandInteraction) {
+    if (!interaction.guild) {
+        await interaction.reply({
+            content: "This command can only be used inside a server.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    if (!interaction.channel || interaction.channel.type !== ChannelType.GuildText
+        || !["general", "info"].includes(interaction.channel.name)
+        || !interaction.channel.parentId
+    ) {
+        await interaction.reply({
+            content: "This command can only be used in the `general` or `info` channel of a CTF category.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    let category = interaction.channel.parentId && await interaction.guild.channels.fetch(interaction.channel.parentId);
+    if (!category || category.type !== ChannelType.GuildCategory) {
+        await interaction.reply({
+            content: "This command can only be used in the `general` or `info` channel of a CTF category.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    await interaction.deferReply({ flags: "Ephemeral" });
+
+    let allChannels = await interaction.guild.channels.fetch();
+    let categoryChildren = [...allChannels.values()].filter((channel) => {
+        return channel !== null && "parentId" in channel && channel.parentId === category.id;
+    });
+
+    let infoChannel = categoryChildren.find((channel) => channel?.name === "info");
+    let generalChannel = categoryChildren.find((channel) => channel?.name === "general");
+    let challsChannel = categoryChildren.find((channel) => channel?.name === "challs");
+
+    if (
+        !infoChannel ||
+        !generalChannel ||
+        !challsChannel ||
+        infoChannel.type !== ChannelType.GuildText ||
+        generalChannel.type !== ChannelType.GuildText ||
+        challsChannel.type !== ChannelType.GuildForum
+    ) {
+        await interaction.editReply("This command can only be used in the `general` or `info` channel of a CTF category.");
+        return;
+    }
+
+    let everyoneRoleId = interaction.guild.roles.everyone.id;
+
+    await category.permissionOverwrites.edit(everyoneRoleId, {
+        ViewChannel: true,
+        ReadMessageHistory: true,
+        SendMessages: false,
+        SendMessagesInThreads: false,
+        CreatePublicThreads: false,
+        CreatePrivateThreads: false,
+    });
+
+    await Promise.all(
+        category.permissionOverwrites.cache
+            .filter(overwrite => overwrite.id !== everyoneRoleId)
+            .map(overwrite => category.permissionOverwrites.delete(overwrite.id))
+    );
+
+    for (let channel of [infoChannel, generalChannel, challsChannel]) {
+        if (channel && "lockPermissions" in channel && typeof channel.lockPermissions === "function") {
+            await channel.lockPermissions();
+        }
+    }
+
+    await interaction.editReply(
+        `Updated ${category.name}: @everyone can read, (mostly) no-one can write.`,
+    );
+}
+
+async function handleJoinCtfButton(interaction: ButtonInteraction, categoryId: string) {
+    if (!interaction.guild) {
+        await interaction.reply({
+            content: "This button only works inside a server.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    let categoryChannel = await interaction.guild.channels.fetch(categoryId);
+
+    if (!categoryChannel || categoryChannel.type !== ChannelType.GuildCategory) {
+        await interaction.reply({
+            content: "That category no longer exists.",
+            flags: "Ephemeral",
+        });
+        return;
+    }
+
+    await categoryChannel.permissionOverwrites.edit(interaction.user.id, {
+        ViewChannel: true,
+        SendMessages: true,
+    });
+
+    await interaction.reply({
+        content: `Granted you access to ${categoryChannel.name}.`,
+        flags: "Ephemeral",
+    });
+}
+
-- 
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