Add commandManager and the first slash command

the command allows for summining the bot without sending an actual mention message
that might hang in the chat log sent to openAi, consuming tokens

package-lock.json

@@ -13,10 +13,12 @@
         "discord.js": "^14.8.0",
         "fold-to-ascii": "^5.0.1",
         "gpt-3-encoder": "^1.1.4",
-        "openai": "^3.2.1"
+        "openai": "^3.2.1",
+        "require-directory": "^2.1.1"
       },
       "devDependencies": {
         "@types/fold-to-ascii": "^5.0.0",
+        "@types/require-directory": "^2.1.2",
         "@typescript-eslint/eslint-plugin": "^5.55.0",
         "@typescript-eslint/parser": "^5.55.0",
         "eslint": "^8.36.0",
@@ -295,6 +297,15 @@
       "resolved": "https://registry.npmjs.org/@types/node/-/node-18.15.2.tgz",
       "integrity": "sha512-sDPHm2wfx2QhrMDK0pOt2J4KLJMAcerqWNvnED0itPRJWvI+bK+uNHzcH1dFsBlf7G3u8tqXmRF3wkvL9yUwMw=="
     },
+    "node_modules/@types/require-directory": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/@types/require-directory/-/require-directory-2.1.2.tgz",
+      "integrity": "sha512-FUG5PJ2rsV2TssSspVZefTR8+wH3Ahr6KdAB6WanLNroSDu0A5ew4WVUxnnGU/E1k6nzip9ZawGAAe/ZqzGn5g==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/semver": {
       "version": "7.3.13",
       "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.3.13.tgz",
@@ -1710,6 +1721,14 @@
         "url": "https://github.com/sponsors/Borewit"
       }
     },
+    "node_modules/require-directory": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
+      "integrity": "sha512-fGxEI7+wsG9xrvdjsrlmL22OMTTiHRwAMroiEeMgq8gzoLC/PQr7RsRDSTLUg/bZAZtF+TVIkHc6/4RIKrui+Q==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/resolve-from": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",

package.json

@@ -14,10 +14,12 @@
     "discord.js": "^14.8.0",
     "fold-to-ascii": "^5.0.1",
     "gpt-3-encoder": "^1.1.4",
-    "openai": "^3.2.1"
+    "openai": "^3.2.1",
+    "require-directory": "^2.1.1"
   },
   "devDependencies": {
     "@types/fold-to-ascii": "^5.0.0",
+    "@types/require-directory": "^2.1.2",
     "@typescript-eslint/eslint-plugin": "^5.55.0",
     "@typescript-eslint/parser": "^5.55.0",
     "eslint": "^8.36.0",

src/command.ts

@@ -0,0 +1,41 @@
+import { PermissionsBitField } from "discord.js";
+import { RESTPostAPIApplicationCommandsJSONBody } from "discord.js";
+import { ApplicationCommandOption, ApplicationCommandType, ChatInputCommandInteraction, LocalizationMap, MessageInteraction, PermissionResolvable, UserSelectMenuInteraction } from "discord.js";
+
+type InteractionTypeMap = {
+  [ApplicationCommandType.ChatInput]: [ChatInputCommandInteraction, string];
+  [ApplicationCommandType.Message]: [MessageInteraction, never];
+  [ApplicationCommandType.User]: [UserSelectMenuInteraction, never];
+};
+
+interface Command<Type extends keyof InteractionTypeMap = ApplicationCommandType> {
+  readonly name: string;
+  readonly name_localizations?: LocalizationMap;
+  readonly description: InteractionTypeMap[Type][1];
+  readonly description_localizations?: LocalizationMap;
+  readonly options?: ApplicationCommandOption[];
+  readonly default_member_permissions?: PermissionResolvable;
+  readonly type: Type;
+  readonly nsfw?: boolean;
+  readonly dm_permission?: boolean;
+}
+
+abstract class Command<Type extends keyof InteractionTypeMap = ApplicationCommandType> {
+  abstract execute(interaction: InteractionTypeMap[Type][0]): Promise<void>;
+
+  toRESTPostApplicationCommands(): RESTPostAPIApplicationCommandsJSONBody {
+    return {
+      name: this.name,
+      name_localizations: this.name_localizations,
+      description: this.description,
+      description_localizations: this.description_localizations,
+      options: this.options,
+      default_member_permissions: this.default_member_permissions !== undefined ? new PermissionsBitField(this.default_member_permissions).bitfield.toString() : undefined,
+      type: this.type,
+      nsfw: this.nsfw,
+      dm_permission: this.dm_permission,
+    };
+  }
+}
+
+export default Command;

src/commands/summon.ts

@@ -0,0 +1,16 @@
+import { ApplicationCommandType, ChatInputCommandInteraction } from "discord.js";
+
+import Command from "../command";
+import { queueRequest } from "../execution";
+
+
+export default class Summon extends Command {
+  name = "summon";
+  description = "Summons a bot to reply in chat without sending any message";
+  type = ApplicationCommandType.ChatInput;
+  dm_permission = false;
+
+  async execute(interaction: ChatInputCommandInteraction) {
+    queueRequest(interaction);
+  }
+}

src/index.ts

@@ -4,6 +4,7 @@ import { PrismaClient } from "@prisma/client";
 
 import config from "./config";
 import { queueRequest } from "./execution";
+import InteractionManager from "./interactionManager";
 
 const discord = new DiscordApi.Client({
   intents: [
@@ -19,6 +20,9 @@ export const openai = new OpenAIApi(new OpenAIApiConfiguration({
 
 export const database = new PrismaClient();
 
+const interactionManager = new InteractionManager();
+interactionManager.bindClient(discord);
+
 discord.on("ready", async event => {
   console.log(`Connected to Discord as ${event.user.tag} (${event.user.id})`);
 });

src/interactionManager.ts

@@ -0,0 +1,40 @@
+import { Interaction, Client as DiscordClient } from "discord.js";
+import requireDirectory from "require-directory";
+
+import Command from "./command";
+
+export default class CommandManager {
+  readonly commands: Command[] = [];
+
+  constructor(directory = "./commands") {
+    const files = requireDirectory(module, directory);
+    for (const i in files ) {
+      try {
+        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+        // @ts-ignore
+        this.commands.push(new (files[i].default as Command)());
+      }
+      catch (e) {
+        console.error(`Failed to construct command ${i} (${typeof e}):`);
+        console.error(e);
+      }
+    }
+  }
+
+  onInteraction(interaction: Interaction) {
+    if (
+      interaction.isChatInputCommand() ||
+      interaction.isMessageContextMenuCommand() ||
+      interaction.isUserContextMenuCommand()
+    ) {
+      const foundCommand = this.commands.find((command) => command.name == interaction.commandName );
+      if (!foundCommand) throw new Error(`Unknown command received (${interaction.commandName}). Did you forgot to push updated commands?`);
+      foundCommand.execute(interaction);
+      return;
+    }
+  }
+
+  bindClient(client: DiscordClient) {
+    client.on("interactionCreate", (e) => this.onInteraction(e));
+  }
+}