Discord Bot Seed for Val Town

A clean, general-purpose Discord bot template built for Val Town. Provides slash command handling, webhook messaging, and structured logging out of the box.

• Slash command framework - Define commands with defineCommand(), auto-registered to Discord
• Interaction handler - Native Ed25519 signature verification, subcommand parsing, fast/deferred command routing
• Component & modal handling - Auto-discovered handlers for buttons, selects, and modals via defineComponent()
• Context menu commands - User and message context menu support with resolved data
• Webhook messaging - Send text and embeds with chunking, rate-limit handling, and fallback support
• Structured logging - Batched Discord webhook logger with log levels
• Admin commands - Built-in /commands register and /commands unregister for managing bot commands via Discord
• Command cooldowns - Per-user cooldowns with configurable duration
• Health check - GET endpoint returns { status: "ok" } for monitoring
• Persistence - Minimal KV store wrapping Val Town SQLite

1. Fork this project on Val Town
2. Create a Discord application at discord.com/developers
3. Set environment variables (see below)
4. Set the Interactions Endpoint URL in your Discord app settings to your Val Town HTTP endpoint URL (the interactions.http.ts val)
5. Run /commands register in your Discord server to register the bot's commands

1. Create a new file in discord/interactions/commands/:

// discord/interactions/commands/hello.ts
import { defineCommand } from "../define-command.ts";

export default defineCommand({
  name: "hello",
  description: "Say hello",
  registration: { type: "guild", servers: ["MAIN"] },
  deferred: false,
  async execute({ userId }) {
    return { success: true, message: `Hello <@${userId}>!` };
  },
});

2. Use /commands register in Discord to register the new command.

Create a user or message context menu command by setting type: 2 (USER) or type: 3 (MESSAGE):

// discord/interactions/commands/user-info.ts
import { defineCommand } from "../define-command.ts";

export default defineCommand({
  name: "User Info",
  description: "",
  type: 2, // USER context menu
  registration: { type: "guild", servers: ["MAIN"] },
  deferred: false,
  async execute({ targetId, resolved }) {
    const user = resolved?.users?.[targetId!];
    return { success: true, message: `User: ${user?.username}` };
  },
});

Return a modal from a non-deferred command, then handle the submission with a component handler:

// Command returns a modal
async execute() {
  return {
    success: true,
    modal: {
      title: "Feedback",
      custom_id: "feedback-modal",
      components: [
        { type: 1, components: [{ type: 4, custom_id: "topic", label: "Topic", style: 1, required: true }] },
      ],
    },
  };
}

// components/feedback-modal.ts
export default defineComponent({
  customId: "feedback-modal",
  match: "exact",
  type: "modal",
  async execute({ fields }) {
    return { success: true, message: `Topic: ${fields?.topic}` };
  },
});

Return components with a select menu, then handle the selection:

// Command returns a select menu
async execute() {
  return {
    success: true,
    message: "Choose:",
    components: [{
      type: 1,
      components: [{ type: 3, custom_id: "my-select", options: [{ label: "A", value: "a" }] }],
    }],
  };
}

// components/my-select.ts
export default defineComponent({
  customId: "my-select",
  match: "exact",
  type: "select",
  async execute({ values }) {
    return { success: true, updateMessage: true, message: `You picked: ${values?.[0]}` };
  },
});

Return buttons with encoded state in the custom_id, then use a prefix-match handler:

// components/my-page.ts
export default defineComponent({
  customId: "my-page:",
  match: "prefix",
  type: "button",
  async execute({ customId }) {
    const page = parseInt(customId.split(":")[1], 10);
    return { success: true, updateMessage: true, message: `Page ${page}`, components: [...] };
  },
});

1. Create a new file in discord/interactions/components/:

// discord/interactions/components/my-button.ts
import { defineComponent } from "../define-component.ts";

export default defineComponent({
  customId: "my-button",
  match: "exact",
  type: "button",
  async execute({ userId }) {
    return { success: true, message: `Clicked by <@${userId}>!` };
  },
});

Component handlers are auto-discovered. Match modes: "exact" for full custom_id match, "prefix" for prefix match (useful for dynamic IDs like delete:123).

Add a cooldown property (in seconds) to any command definition:

export default defineCommand({
  name: "my-command",
  cooldown: 10, // 10 seconds between uses per user
  // ...
});

Custom text snippets stored per-guild. Anyone can view tags; adding, editing, and removing requires admin permissions.

Subcommands:

• view <name> — Display a tag's content (autocomplete on name)
• add <name> <content> — Create a new tag (admin-only, max 50 per guild)
• edit <name> <content> — Update an existing tag (admin-only)
• remove <name> — Delete a tag (admin-only)
• list — Show all available tag names

Example:

1. Create a tag: /tag add name:rules content:Please read #rules before posting.
2. View it: /tag view name:rules
3. Anyone can view, only admins can manage.

Admin-only giveaway system with button entry. One active giveaway per guild.

Subcommands:

• create <prize> <duration> <channel> [winners] — Start a giveaway (posts panel with Enter button)
• end — End the current giveaway early and pick winners
• reroll — Pick new winner(s) from the ended giveaway's entrants

Example:

1. Create: /giveaway create prize:Nitro duration:1d channel:#giveaways winners:2
2. Users click "Enter Giveaway" button on the panel
3. End early or let the cron job end it automatically
4. Reroll if needed: /giveaway reroll

Cron: Schedule services/giveaways.cron.ts to run every 1-5 minutes to auto-end expired giveaways.

Personal reminders delivered as channel messages. Open to all users.

Usage: /remind duration:1h message:Check the oven

• Duration supports: s (seconds), m (minutes), h (hours), d (days), and combinations like 1d12h
• Maximum 10 active reminders per user
• Maximum duration: 30 days
• Reminder is posted to the channel where the command was used

Cron: Schedule services/reminders.cron.ts to run every 1-5 minutes to deliver due reminders.

Admin-only button-based polls. One active poll per guild.

Subcommands:

• create <question> <options> <channel> [duration] — Start a poll (options are comma-separated, 2–10 choices)
• end — End the active poll and show final results

Example:

1. Create: /poll create question:Fav color? options:Red,Blue,Green channel:#general duration:1h
2. Users click buttons to vote (click again to remove, click different to switch)
3. End early with /poll end or let the cron auto-end it
4. Omit duration for a poll with no time limit

Cron: Schedule services/polls.cron.ts to run every 1-5 minutes to auto-end expired polls.

Admin-only time-delayed message delivery.

Subcommands:

• send <channel> <time> <message> — Schedule a message (e.g. time:2h)
• list — Show pending scheduled messages for this guild
• cancel <id> — Cancel a pending message (autocomplete on id)

Example:

1. Schedule: /schedule send channel:#announcements time:30m message:Server maintenance starting now!
2. Check pending: /schedule list
3. Cancel if needed: /schedule cancel (autocomplete shows pending messages)
4. Maximum 25 scheduled messages per guild

Cron: Schedule services/scheduled-messages.cron.ts to run every 1-5 minutes to deliver due messages.

Roll dice using standard TTRPG notation. Open to all users.

Usage: /r dice:2d20+5

• Supports standard notation: XdN, XdN+M, XdN-M
• 1–20 dice per roll, d2–d100
• Shows individual rolls and total with modifier breakdown

Examples:

• /r dice:1d20 → single d20 result
• /r dice:4d6 → roll 4d6, shows each roll + total
• /r dice:2d20+5 → roll 2d20, add 5 to total
• /r dice:1d2 → coin flip (1 or 2)

Self-assignable role panels with button-based toggling.

Setup:

1. Add roles: /react-roles add role:@Gamer emoji:🎮 label:Gamer
2. Repeat for up to 25 roles
3. Send the panel: /react-roles send channel:#roles
4. Users click buttons to self-assign/remove roles

Subcommands:

• add <role> <emoji> <label> — Add a role to the panel
• remove <role> — Remove a role from the panel
• list — Show current configuration
• send <channel> — Post or update the role panel
• clear — Delete all configuration

The panel is a non-ephemeral message with an embed and buttons. Clicking a button toggles the role (add if missing, remove if present). Re-running send updates the existing panel message instead of creating a duplicate.

A minimal KV store wrapping Val Town SQLite is available:

import { kv } from "../../persistence/kv.ts";

await kv.set("user:123", { score: 42 });
const data = await kv.get<{ score: number }>("user:123");
await kv.delete("user:123");
const all = await kv.list("user:");

Send a GET request to the interactions endpoint to check if the bot is running:

GET /interactions -> { "status": "ok", "timestamp": "..." }

├── discord/
│   ├── constants.ts              # Centralized CONFIG, env validation, embed colors
│   ├── discord-api.ts            # Discord Bot API fetch helper
│   ├── persistence/
│   │   └── kv.ts                 # Key-value store (Val Town SQLite)
│   ├── helpers/
│   │   ├── duration.ts          # Human-readable duration parser
│   │   └── embed-builder.ts      # Fluent embed builder
│   ├── interactions/
│   │   ├── auto-discover.ts     # File discovery helper
│   │   ├── define-command.ts     # defineCommand() helper and types
│   │   ├── define-component.ts   # defineComponent() helper and types
│   │   ├── errors.ts            # UserFacingError class
│   │   ├── handler.ts           # Main interaction handler
│   │   ├── patterns.ts          # Discord API constants & autocomplete
│   │   ├── registration.ts      # Command registration logic
│   │   ├── registry.ts          # Unified command & component registry
│   │   ├── commands/
│   │   │   ├── about.ts         # Bot info command
│   │   │   ├── coin-flip.ts     # Coin flip command
│   │   │   ├── color-picker.ts  # Select menu demo
│   │   │   ├── commands.ts      # Admin: manage registration
│   │   │   ├── counter.ts       # KV persistence demo
│   │   │   ├── echo.ts          # Echo command
│   │   │   ├── facts.ts         # Pagination demo
│   │   │   ├── feedback.ts      # Modal demo
│   │   │   ├── giveaway.ts      # Giveaway system (admin)
│   │   │   ├── help.ts          # List available commands
│   │   │   ├── poll.ts          # Poll system (admin)
│   │   │   ├── pick.ts          # Random picker
│   │   │   ├── ping.ts          # Health check command
│   │   │   ├── r.ts             # Dice roller
│   │   │   ├── react-roles.ts   # React-roles panel admin command
│   │   │   ├── remind.ts        # Personal reminders
│   │   │   ├── schedule.ts     # Scheduled messages (admin)
│   │   │   ├── slow-echo.ts     # Deferred command example
│   │   │   ├── tag.ts           # Custom text tags
│   │   │   └── user-info.ts     # Context menu demo
│   │   └── components/
│   │       ├── color-select.ts       # Select menu handler
│   │       ├── example-button.ts     # Button handler
│   │       ├── facts-page.ts        # Pagination handler
│   │       ├── feedback-modal.ts     # Modal handler
│   │       ├── giveaway-enter.ts     # Giveaway entry button handler
│   │       ├── poll-vote.ts         # Poll vote button handler
│   │       └── react-role.ts        # React-role toggle handler
│   └── webhook/
│       ├── send.ts              # Webhook message sending
│       └── logger.ts            # Discord webhook logger
└── services/
    ├── interactions.http.ts     # HTTP endpoint for Discord interactions
    ├── example.cron.ts          # Cron job with webhook example
    ├── giveaways.cron.ts        # Auto-end expired giveaways
    ├── polls.cron.ts            # Auto-end expired polls
    ├── reminders.cron.ts        # Deliver due reminders
    └── scheduled-messages.cron.ts # Deliver due scheduled messages