import { NextResponse } from "next/server";
import  RSS  from "rss";
import { fetchChaptersRSS } from "@/lib/api";
import { Chapter } from "@/lib/types";


const BASE_URL = process.env.BASE_URL || "http://localhost:3000";

export async function GET(){
    const data = await fetchChaptersRSS();

    const feed = new RSS({
        title: "Null Translation Group",
        description: "Null Translation Group main hub",
        site_url: BASE_URL,
        feed_url: `${BASE_URL}/api/feed`,
        language: "en",
    });
    
    data.forEach((chapter: Chapter) => {
        feed.item({
            title: chapter.book?.title + " - Chapter " + chapter.number + " " + chapter.title,
            description: "Daily chapter release for " + chapter.book?.title,
            url: `${BASE_URL}/books/${chapter.book?.documentId}/chapters/${chapter.documentId}`,
            date: chapter.release_datetime,
        });
    });

    const xml = feed.xml({ indent: true });

    return new NextResponse(xml, {
        headers: {
            "Content-Type": "application/xml",
        },
    });
}