make new_post route for the android widget

Signed-off-by: Christine Dodrill <me@christine.website>

src/handlers/feeds.rs

@@ -1,5 +1,5 @@
 use super::LAST_MODIFIED;
-use crate::{app::State, templates};
+use crate::{app::State, post::Post, templates};
 use lazy_static::lazy_static;
 use prometheus::{opts, register_int_counter_vec, IntCounterVec};
 use std::{io, sync::Arc};
@@ -22,6 +22,14 @@ pub async fn jsonfeed(state: Arc<State>, since: Option<String>) -> Result<impl R
     Ok(warp::reply::json(&state.jf))
 }
 
+#[instrument(skip(state))]
+pub async fn new_post(state: Arc<State>) -> Result<impl Reply, Rejection> {
+    let state = state.clone();
+    let everything = state.everything.clone();
+    let p: &Post = everything.iter().next().unwrap();
+    Ok(warp::reply::json(&p.new_post))
+}
+
 #[derive(Debug)]
 pub enum RenderError {
     Build(warp::http::Error),

src/main.rs

@@ -44,6 +44,9 @@ async fn main() -> Result<()> {
     );
 
     let healthcheck = warp::get().and(warp::path(".within").and(warp::path("health")).map(|| "OK"));
+    let new_post = warp::path!(".within" / "website.within.xesite" / "new_post")
+        .and(with_state(state.clone()))
+        .and_then(handlers::feeds::new_post);
 
     let base = warp::path!("blog" / ..);
     let blog_index = base
@@ -164,7 +167,7 @@ async fn main() -> Result<()> {
         .or(patrons)
         .or(jsonfeed.or(atom.or(sitemap)).or(rss))
         .or(favicon.or(robots).or(sw))
-        .or(contact)
+        .or(contact.or(new_post))
         .map(|reply| {
             warp::reply::with_header(
                 reply,

src/post/mod.rs

@@ -1,6 +1,7 @@
 use chrono::prelude::*;
 use color_eyre::eyre::{eyre, Result, WrapErr};
 use glob::glob;
+use serde::Serialize;
 use std::{cmp::Ordering, path::PathBuf};
 use tokio::fs;
 
@@ -13,6 +14,15 @@ pub struct Post {
     pub body_html: String,
     pub date: DateTime<FixedOffset>,
     pub mentions: Vec<mi::WebMention>,
+    pub new_post: NewPost,
+}
+
+/// Used with the Android app to show information in a widget.
+#[derive(Eq, PartialEq, Debug, Clone, Serialize)]
+pub struct NewPost {
+    pub title: String,
+    pub summary: String,
+    pub link: String,
 }
 
 impl Into<jsonfeed::Item> for Post {
@@ -70,6 +80,33 @@ impl Post {
     }
 }
 
+fn trim(string: &str) -> String {
+    let mut buf = String::new();
+    let mut capturing = false;
+
+    for line in string.lines() {
+        if line.starts_with("#") {
+            continue;
+        }
+
+        if line == "" {
+            if capturing && buf.len() > 260 {
+                break;
+            } else {
+                capturing = true;
+                continue;
+            }
+        }
+
+        if capturing {
+            buf.push_str(" ");
+            buf.push_str(line);
+        }
+    }
+
+    buf
+}
+
 async fn read_post(dir: &str, fname: PathBuf) -> Result<Post> {
     let body = fs::read_to_string(fname.clone())
         .await
@@ -96,12 +133,19 @@ async fn read_post(dir: &str, fname: PathBuf) -> Result<Post> {
         Err(_) => vec![],
     };
 
+    let new_post = NewPost {
+        title: front_matter.title.clone(),
+        summary: trim(body).to_string(),
+        link: format!("https://christine.website/{}", link),
+    };
+
     Ok(Post {
         front_matter,
         link,
         body_html,
         date,
         mentions,
+        new_post,
     })
 }