import type { RedditPost, RedditComment, SubredditInfo } from "./reddit.ts";
export type Format = "md" | "json";
function formatDate(utc: number): string {
return new Date(utc * 1000).toISOString().split("T")[0]!;
}
function formatPostMd(post: RedditPost): string {
const lines = [
`## ${post.title}`,
``,
`**r/${post.subreddit}** | ${post.score} points | ${post.num_comments} comments | by u/${post.author} | ${formatDate(post.created_utc)}`,
``,
];
if (post.is_self && post.selftext) {
lines.push(post.selftext.slice(0, 500) + (post.selftext.length > 500 ? "..." : ""));
lines.push("");
} else if (!post.is_self) {
lines.push(`Link: ${post.url}`);
lines.push("");
}
lines.push(`[View on Reddit](https://reddit.com${post.permalink})`);
return lines.join("\n");
}
function formatCommentMd(comment: RedditComment, depth = 0): string {
const indent = " ".repeat(depth);
const lines = [
`${indent}**u/${comment.author}** | ${comment.score} points`,
``,
comment.body
.split("\n")
.map((line) => indent + line)
.join("\n"),
``,
];
for (const reply of comment.replies.slice(0, 3)) {
lines.push(formatCommentMd(reply, depth + 1));
}
return lines.join("\n");
}
export function formatPosts(posts: RedditPost[], format: Format, after?: string | null): string {
if (format === "json") {
return JSON.stringify({ posts, after }, null, 2);
}
if (posts.length === 0) {
return "No posts found.";
}
const content = posts.map(formatPostMd).join("\n\n---\n\n");
if (after) {
return `${content}\n\n---\n\n*More results available. Use \`after: "${after}"\` to get next page.*`;
}
return content;
}
export function formatSubredditInfo(info: SubredditInfo, format: Format): string {
if (format === "json") {
return JSON.stringify(info, null, 2);
}
return [
`# r/${info.name}`,
``,
`**${info.title}**`,
``,
info.description || "_No description_",
``,
`- Subscribers: ${info.subscribers.toLocaleString()}`,
`- Created: ${formatDate(info.created_utc)}`,
`- NSFW: ${info.over18 ? "Yes" : "No"}`,
``,
`[Visit subreddit](https://reddit.com${info.url})`,
].join("\n");
}
export function formatPostWithComments(
post: RedditPost,
comments: RedditComment[],
format: Format
): string {
if (format === "json") {
return JSON.stringify({ post, comments }, null, 2);
}
const lines = [formatPostMd(post), "", "---", "", "## Comments", ""];
if (comments.length === 0) {
lines.push("_No comments_");
} else {
for (const comment of comments) {
lines.push(formatCommentMd(comment));
lines.push("---");
lines.push("");
}
}
return lines.join("\n");
}
