77 lines
3.0 KiB
Rust
77 lines
3.0 KiB
Rust
use axum::http::{header, StatusCode};
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use axum::response::IntoResponse;
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use chrono::Utc;
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use rss::{ChannelBuilder, EnclosureBuilder, GuidBuilder, Item, ItemBuilder};
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use crate::blog_posts::blog_post_model::{BlogPostMetadata, BLOG_POST_PATH};
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use crate::filters::{parse_markdown, truncate_md};
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use crate::post_utils::post_listing::get_post_list;
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pub async fn render_rss_feed() -> Result<impl IntoResponse, StatusCode> {
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let mut post_list = get_post_list::<BlogPostMetadata>(BLOG_POST_PATH)
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.await
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.unwrap_or(vec![]);
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post_list.sort_by_key(|post| post.metadata.date);
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post_list.reverse();
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let last_build_date = Utc::now().to_rfc2822();
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let publish_date = post_list.last().map_or_else(
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|| last_build_date.clone(),
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|post| post.metadata.date.to_rfc2822(),
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);
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let post_items = post_list
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.into_iter()
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.map(|post| {
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ItemBuilder::default()
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.title(Some(post.metadata.title))
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.link(Some(format!("https://michalvanko.dev/blog/{}", post.slug)))
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.description({
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let truncated =
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truncate_md(&post.body, 2).unwrap_or("Can't parse post body".to_string());
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let parsed_md = parse_markdown(&truncated)
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.unwrap_or("Can't process truncated post body".to_string());
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Some(parsed_md)
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})
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.content({
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let parsed_md = parse_markdown(&post.body)
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.unwrap_or("Can't process full post body".to_string());
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Some(parsed_md)
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})
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.enclosure({
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post.metadata.thumbnail.map(|src| {
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let mime_type = mime_guess::from_path(&src)
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.first()
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.map(|mime| mime.to_string())
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.unwrap_or("image".to_string());
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EnclosureBuilder::default()
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.url(src)
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.mime_type(mime_type)
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.build()
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})
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})
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.guid(Some(
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GuidBuilder::default()
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.value(format!("https://michalvanko.dev/blog/{}", post.slug))
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.build(),
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))
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.pub_date(Some(post.metadata.date.to_rfc2822()))
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.build()
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})
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.collect::<Vec<Item>>();
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let feed_builder = ChannelBuilder::default()
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.title("michalvanko.dev latest posts".to_string())
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.link("https://michalvanko.dev".to_string())
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.description("Latest posts published on michalvanko.dev blog site".to_string())
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.language(Some("en".to_string()))
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.webmaster(Some("michalvankosk@gmail.com".to_string()))
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.pub_date(Some(publish_date))
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.last_build_date(Some(last_build_date))
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.items(post_items)
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.build();
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let response = feed_builder.to_string();
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Ok(([(header::CONTENT_TYPE, "application/xml")], response))
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}
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