import { FormattedPost, RedditPost, RedditUser, SearchResponse } from './types.js';
export class ResponseFormatter {
static formatPost(post: RedditPost, user: RedditUser, position: number): FormattedPost {
return {
position,
title: post.title,
author: user.name,
subreddit: post.subreddit,
content: post.text,
url: post.url,
metrics: post.metrics,
redditUrl: `https://reddit.com/r/${post.subreddit}/comments/${post.id}`,
createdAt: post.createdAt
};
}
static formatSearchResponse(
query: string,
subreddit: string,
posts: RedditPost[],
users: RedditUser[]
): SearchResponse {
const userMap = new Map(users.map(user => [user.name, user]));
const formattedPosts = posts
.map((post, index) => {
const user = userMap.get(post.author);
if (!user) return null;
return this.formatPost(post, user, index + 1);
})
.filter((post): post is FormattedPost => post !== null);
return {
query,
subreddit,
count: formattedPosts.length,
posts: formattedPosts
};
}
static toMcpResponse(response: SearchResponse): string {
const header = [
'REDDIT SEARCH RESULTS',
`Query: "${response.query}" in r/${response.subreddit}`,
`Found ${response.count} posts`,
'='.repeat(50)
].join('\n');
if (response.count === 0) {
return header + '\nNo posts found matching your query.';
}
const postBlocks = response.posts.map(post => [
`Post #${post.position}`,
`Title: ${post.title}`,
`Author: u/${post.author}`,
`Subreddit: r/${post.subreddit}`,
post.content ? `Content: ${post.content.substring(0, 200)}${post.content.length > 200 ? '...' : ''}` : '',
post.url ? `Link: ${post.url}` : '',
`Score: ${post.metrics.score} (${post.metrics.upvotes} upvotes, ${post.metrics.downvotes} downvotes)`,
`Comments: ${post.metrics.comments}`,
`Posted: ${new Date(post.createdAt).toLocaleString()}`,
`Reddit URL: ${post.redditUrl}`,
'='.repeat(50)
].filter(line => line.length > 0).join('\n'));
return [header, ...postBlocks].join('\n\n');
}
}
