package eu.m724.blog.data;

import java.time.format.DateTimeFormatter;
import java.util.List;

public class Feed {
    public static String generateRss(Site site, List<Post> posts) {
        var content = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?><rss version=\"2.0\">";
        content += "<channel><title>%s</title><link>%s</link>".formatted(site.name(), site.baseUrl());

        var formatter = DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz");
        for (var post : posts) {
            content += "<item><title>%s</title><link>%s/post/%s.html</link><description>%s</description><pubDate>%s</pubDate></item>".formatted(post.title(), site.baseUrl(), post.slug(), post.summary(), post.createdAt().format(formatter));
        }

        content += "</channel></rss>";

        return content;
    }
}