77 lines
2.4 KiB
Rust
77 lines
2.4 KiB
Rust
use application::ports::RssFeedRenderer;
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use domain::models::DiaryEntry;
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use rss_feed::{ChannelBuilder, GuidBuilder, ItemBuilder};
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pub struct RssAdapter {
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feed_link: String,
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}
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impl RssAdapter {
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pub fn new(feed_link: String) -> Self {
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Self { feed_link }
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}
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}
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impl RssFeedRenderer for RssAdapter {
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fn render_feed(&self, entries: &[DiaryEntry], title: &str) -> Result<String, String> {
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let items = entries
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.iter()
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.map(|e| {
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let item_title = format!(
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"{} ({})",
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e.movie().title().value(),
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e.movie().release_year().value()
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);
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let description = match e.review().comment() {
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Some(c) => format!("{}/5 — {}", e.review().rating().value(), c.value()),
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None => format!("{}/5", e.review().rating().value()),
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};
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let pub_date = e
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.review()
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.watched_at()
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.and_utc()
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.format("%a, %d %b %Y %H:%M:%S +0000")
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.to_string();
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let guid = GuidBuilder::default()
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.value(e.review().id().value().to_string())
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.permalink(false)
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.build();
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ItemBuilder::default()
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.title(Some(item_title))
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.description(Some(description))
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.pub_date(Some(pub_date))
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.guid(Some(guid))
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.build()
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})
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.collect::<Vec<_>>();
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let channel = ChannelBuilder::default()
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.title(title.to_string())
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.link(self.feed_link.clone())
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.description(title.to_string())
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.items(items)
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.build();
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Ok(channel.to_string())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn render_feed_uses_provided_title() {
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let adapter = RssAdapter::new("http://example.com".into());
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let xml = adapter.render_feed(&[], "Custom Title").unwrap();
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assert!(xml.contains("<title>Custom Title</title>"));
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}
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#[test]
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fn render_feed_empty_entries_produces_valid_xml() {
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let adapter = RssAdapter::new("http://example.com".into());
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let xml = adapter.render_feed(&[], "My Feed").unwrap();
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assert!(xml.starts_with("<?xml") || xml.starts_with("<rss"));
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}
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}
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