Add ngate

package.json

@@ -17,23 +17,23 @@
   "license": "ISC",
   "description": "",
   "dependencies": {
-    "axios": "^1.7.7",
-    "date-fns": "^3.6.0",
-    "discord.js": "^14.16.1",
-    "dotenv": "^16.4.5",
-    "glob": "^11.0.0",
-    "mongodb": "^6.8.1",
-    "openai": "^4.62.0",
-    "replicate": "^0.32.1"
+    "axios": "^1.7.9",
+    "date-fns": "^4.1.0",
+    "discord.js": "^14.17.3",
+    "dotenv": "^16.4.7",
+    "glob": "^11.0.1",
+    "mongodb": "^6.13.0",
+    "openai": "^4.82.0",
+    "replicate": "^1.0.1"
   },
   "devDependencies": {
     "@types/glob": "^8.1.0",
-    "@types/node": "^20.4.0",
-    "eslint": "^9.9.1",
-    "prettier": "^3.3.3",
-    "ts-node": "^10.9.1",
-    "tsup": "^8.2.4",
-    "tsx": "^4.19.1",
-    "typescript": "^5.6.2"
+    "@types/node": "^22.13.0",
+    "eslint": "^9.19.0",
+    "prettier": "^3.4.2",
+    "ts-node": "^10.9.2",
+    "tsup": "^8.3.6",
+    "tsx": "^4.19.2",
+    "typescript": "^5.7.3"
   }
 }

src/commands/ngate.ts

@@ -0,0 +1,203 @@
+import { SlashCommandBuilder, ChatInputCommandInteraction } from "discord.js";
+import OpenAI from "openai";
+import config from "../config";
+
+const client = new OpenAI({
+  apiKey: config.openaiApiKey,
+});
+const ngateModel = "ft:gpt-4o-mini-2024-07-18:personal:ngate:AvnNWGXx";
+const systemPrompt = `You are a satirical news writer for the popular news aggregator site, Hacker News.
+You are known for your witty, cynical and often sarcastic take on the world of technology and startups.
+You write in a style that is both informative and entertaining, often using humor to make complex topics more accessible.
+You believe that Hacker News comments are often deceptive, delusional or misleading, and you enjoy pointing out the absurdities and contradictions in them.
+You will write a brief news summary for a given Hacker News item based on its title and the comments.`;
+
+// Initialise the command data.
+export const data = new SlashCommandBuilder()
+  .setName("ngate")
+  .setDescription(
+    "Generates a satirical news summary for the provided Hacker News URL, inspired by n-gate."
+  )
+  .addStringOption((option) =>
+    option
+      .setName("url")
+      .setDescription("The Hacker News URL to generate an n-gate summary for.")
+      .setRequired(true)
+  );
+
+console.log(`Loaded ${data.name} command.`);
+
+// Define the shape of a comment after filtering.
+interface Comment {
+  author: string;
+  text: string;
+  children: Comment[];
+}
+
+/**
+ * Given a URL like "http://news.ycombinator.com/item?id=15634609",
+ * returns the id ("15634609") by splitting on "=".
+ */
+export function extractId(url: string): string {
+  const parts = url.split("=");
+  return parts[parts.length - 1];
+}
+
+/**
+ * Fetches the comments for a given id from the HN Algolia API.
+ * Returns the parsed JSON if the HTTP status is 200.
+ */
+export async function fetchComments(id: string): Promise<any> {
+  const url = `https://hn.algolia.com/api/v1/items/${id}`;
+  const response = await fetch(url);
+  if (response.status === 200) {
+    return response.json();
+  }
+  // You can choose to throw an error or return undefined if the status is not 200.
+  return undefined;
+}
+
+/**
+ * A simple function to un-escape a few common HTML entities.
+ * (You could replace this with a more complete solution or a library if needed.)
+ */
+function unescapeHTML(html: string): string {
+  return html
+    .replace(/&amp;/g, "&")
+    .replace(/&lt;/g, "<")
+    .replace(/&gt;/g, ">")
+    .replace(/&quot;/g, '"')
+    .replace(/&#039;/g, "'");
+}
+
+/**
+ * Filters the comments by:
+ *  - Keeping only the "author", "text", and "children" fields.
+ *  - Recursively processing child comments (up to a given depth).
+ *
+ * @param comments - The list of comments to filter.
+ * @param depth - How deep to process child comments (default is 3).
+ * @returns The filtered comments.
+ */
+export function filterComments(comments: any[], depth: number = 3): Comment[] {
+  if (depth === 0) {
+    return [];
+  }
+
+  const filteredComments: Comment[] = [];
+  for (const comment of comments) {
+    let text: string = comment.text;
+    try {
+      text = text ? unescapeHTML(text) : "";
+    } catch (e) {
+      console.error(`Error un-escaping HTML: ${e}`);
+    }
+
+    const filteredComment: Comment = {
+      author: comment.author,
+      text,
+      children: filterComments(comment.children, depth - 1),
+    };
+
+    filteredComments.push(filteredComment);
+  }
+
+  return filteredComments;
+}
+
+/**
+ * Recursively builds a pretty-printed string of comments,
+ * using indentation to show nesting.
+ *
+ * @param comments - The list of comments to print.
+ * @param indent - The current indent level (default is 0).
+ * @returns A string with the pretty-printed comments.
+ */
+export function prettyPrintComments(
+  comments: Comment[],
+  indent: number = 0
+): string {
+  let result = "";
+  for (const comment of comments) {
+    result += "- ".repeat(indent + 1) + `${comment.author}: ${comment.text}\n`;
+    result += prettyPrintComments(comment.children, indent + 1);
+  }
+  return result;
+}
+
+/**
+ * Generates a satirical news summary for the provided Hacker News URL, inspired by n-gate.
+ * @param interaction The interaction that triggered the command.
+ * @returns A promise that resolves when the command is finished executing.
+ */
+export async function execute(
+  interaction: ChatInputCommandInteraction
+): Promise<void> {
+  await interaction.deferReply();
+
+  const url = interaction.options.getString("url", true).trim();
+
+  // Verify URL format based on https://news.ycombinator.com/item?id=15634609 pattern.
+  if (!url.startsWith("https://news.ycombinator.com/item?id=")) {
+    await interaction.editReply("Invalid Hacker News URL format.");
+    return;
+  }
+
+  const id = extractId(url);
+
+  // Verify that the ID is a valid number.
+  if (isNaN(Number(id))) {
+    await interaction.editReply("Invalid Hacker News ID.");
+    return;
+  }
+
+  const comments = await fetchComments(id);
+
+  // Verify that comments were fetched successfully.
+  if (!comments) {
+    await interaction.editReply("Failed to fetch comments.");
+    return;
+  }
+
+  const filteredComments = filterComments(comments.children);
+
+  // Verify that comments were filtered successfully.
+  if (!filteredComments.length) {
+    await interaction.editReply("No comments found.");
+    return;
+  }
+
+  const formattedComments = prettyPrintComments(filteredComments);
+
+  // Generate a prompt based on the title and comments.
+  const title = comments.title;
+  const userPrompt = `Write a news summary for the following Hacker News item: 
+Title: ${title}
+Comments:
+${formattedComments}`;
+
+  try {
+    // Create a chat completion.
+    const result = await client.chat.completions.create({
+      model: ngateModel,
+      messages: [
+        { role: "system", content: systemPrompt },
+        { role: "user", content: userPrompt },
+      ],
+    });
+
+    // Extract the response.
+    const response = result.choices[0]!.message?.content;
+
+    if (!response) {
+      await interaction.editReply("No response was generated.");
+      return;
+    }
+
+    await interaction.editReply(response);
+  } catch (error: any) {
+    await interaction.editReply(
+      `An error occurred while generating the response: ${error.message || "Unknown error"}`
+    );
+  }
+}

src/utils/commands.ts

@@ -1,22 +1,23 @@
-import { Collection, REST, Routes } from 'discord.js';
-import * as birthday from '../commands/birthday';
-import * as corrupt from '../commands/corrupt';
-import * as countdown from '../commands/countdown';
-import * as eyecandy from '../commands/eyecandy';
-import * as game from '../commands/game';
-import * as gerard from '../commands/gerard';
-import * as image from '../commands/image';
-import * as imdb from '../commands/imdb';
-import * as kanye from '../commands/kanye';
-import * as magicEightBall from '../commands/magic8Ball';
-import * as payday from '../commands/payday';
-import * as plant from '../commands/plant';
-import * as reminder from '../commands/reminder';
-import * as servertime from '../commands/servertime';
-import * as taylor from '../commands/taylor';
-import * as twentyTwenty from '../commands/twentyTwenty';
-import config from '../config';
-import { Command } from './types';
+import { Collection, REST, Routes } from "discord.js";
+import * as birthday from "../commands/birthday";
+import * as corrupt from "../commands/corrupt";
+import * as countdown from "../commands/countdown";
+import * as eyecandy from "../commands/eyecandy";
+import * as game from "../commands/game";
+import * as gerard from "../commands/gerard";
+import * as image from "../commands/image";
+import * as imdb from "../commands/imdb";
+import * as kanye from "../commands/kanye";
+import * as magicEightBall from "../commands/magic8Ball";
+import * as ngate from "../commands/ngate";
+import * as payday from "../commands/payday";
+import * as plant from "../commands/plant";
+import * as reminder from "../commands/reminder";
+import * as servertime from "../commands/servertime";
+import * as taylor from "../commands/taylor";
+import * as twentyTwenty from "../commands/twentyTwenty";
+import config from "../config";
+import { Command } from "./types";
 
 /**
  * Get all commands as a collection.
@@ -35,6 +36,7 @@ export function getCommands(): Collection<string, Command> {
   commands.set(imdb.data.name, imdb);
   commands.set(kanye.data.name, kanye);
   commands.set(magicEightBall.data.name, magicEightBall);
+  commands.set(ngate.data.name, ngate);
   commands.set(payday.data.name, payday);
   commands.set(plant.data.name, plant);
   commands.set(reminder.data.name, reminder);
@@ -53,7 +55,7 @@ export async function registerSlashCommands(
   commands: Collection<string, Command>
 ) {
   const commandData = commands.map((command) => command.data.toJSON());
-  const rest = new REST({ version: '10' }).setToken(config.discordApiKey);
+  const rest = new REST({ version: "10" }).setToken(config.discordApiKey);
   await rest.put(Routes.applicationCommands(config.discordApplicationId), {
     body: commandData,
   });