Add feed form

Cargo.toml

@@ -15,7 +15,7 @@ path = "src/lib.rs"
 ansi-to-html = "0.1"
 anyhow = "1"
 article_scraper = "2.0.0-alpha.0"
-axum = "0.6"
+axum = { version = "0.6", features = ["form"] }
 bytes = "1.4"
 chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4.3", features = ["derive", "env"] }

frontend/css/styles.css

@@ -3,7 +3,7 @@
 html {
   font-size: 18px;
   line-height: 1.6em;
-  font-family: Helvetica, Arial, sans-serif;
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
 }
 
 /* Header */
@@ -47,6 +47,10 @@ ul.entries li {
   margin-bottom: 8px;
 }
 
+ul.entries li a {
+  text-decoration: none;
+}
+
 ul.entries li em.domain {
   margin-left: 8px;
   color: rgba(0, 0, 0, 0.75);
@@ -63,7 +67,7 @@ pre#log {
 
 article {
   max-width: 35em;
-  margin: 0 auto;
+  margin: 24px auto;
   font-size: 18px;
 }
 
@@ -78,3 +82,71 @@ article img {
   width: auto;
   height: auto;
 }
+
+/* Feeds */
+
+span.error {
+  color: crimson;
+}
+
+div.feeds {
+  display: grid;
+  grid-template-columns: minmax(auto, 1fr) minmax(200px, 500px);
+  grid-template-areas: 'feeds add-feed';
+  grid-gap: 24px;
+}
+
+@media (max-width: 768px) {
+  div.feeds {
+    grid-template-columns: minmax(0, 1fr);
+    grid-template-areas: 'feeds' 'add-feed';
+  }
+}
+
+ul#feeds {
+  grid-area: 'feeds';
+  list-style: none;
+  padding: 0;
+  margin-left: 8px;
+}
+
+ul#feeds li {
+  margin-bottom: 8px;
+}
+
+ul#feeds li a {
+   text-decoration: none;
+}
+
+div.add-feed {
+  grid-area: 'add-feed';
+}
+
+form.add-feed-form .form-grid {
+  display: grid;
+  grid-template-columns: fit-content(100%) minmax(100px, 400px);
+  grid-gap: 16px;
+}
+
+form.add-feed-form .form-grid label {
+  font-size: 16px;
+  font-weight: bold;
+  grid-column: 1 / 2;
+}
+
+form.add-feed-form .form-grid input, form.add-feed-form .form-grid textarea {
+  font-size: 14px;
+  grid-column: 2 / 3;
+}
+
+form.add-feed-form .form-grid textarea {
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  resize: vertical;
+}
+
+form.add-feed-form input[type="submit"] {
+  font-size: 14px;
+  margin-top: 24px;
+  padding: 4px 16px;
+  float: right;
+}

src/error.rs

@@ -20,6 +20,9 @@ pub enum Error {
     #[error("an internal server error occurred")]
     Anyhow(#[from] anyhow::Error),
 
+    #[error("an internal server error occurred")]
+    Reqwest(#[from] reqwest::Error),
+
     #[error("validation error in request body")]
     InvalidEntity(#[from] ValidationErrors),
 
@@ -69,7 +72,7 @@ impl Error {
 
         match self {
             NotFound(_, _) => StatusCode::NOT_FOUND,
-            Sqlx(_) | Anyhow(_) => StatusCode::INTERNAL_SERVER_ERROR,
+            Sqlx(_) | Anyhow(_) | Reqwest(_) => StatusCode::INTERNAL_SERVER_ERROR,
             InvalidEntity(_) | RelationNotFound(_) => StatusCode::UNPROCESSABLE_ENTITY,
         }
     }

src/handlers/entry.rs

@@ -23,7 +23,7 @@ pub async fn get(
     Ok(layout.render(html! {
         article {
             @let title = entry.title.unwrap_or_else(|| "Untitled".to_string());
-            h1 { a href=(entry.url) { (title) } }
+            h2 { a href=(entry.url) { (title) } }
             @let published_at = entry.published_at.to_rfc3339_opts(chrono::SecondsFormat::Millis, true);
             span class="published" {
                 strong { "Published: " }

src/handlers/feed.rs

@@ -1,13 +1,20 @@
 use axum::extract::{Path, State};
-use axum::response::Response;
+use axum::http::StatusCode;
+use axum::response::{IntoResponse, Response};
+use axum::Form;
+use feed_rs::parser;
 use maud::html;
+use reqwest::Client;
+use serde::Deserialize;
+use serde_with::{serde_as, NoneAsEmptyString};
 use sqlx::PgPool;
 
-use crate::error::Result;
+use crate::error::{Error, Result};
 use crate::models::entry::get_entries_for_feed;
-use crate::models::feed::get_feed;
-use crate::partials::{entry_list::entry_list, layout::Layout};
+use crate::models::feed::{create_feed, get_feed, CreateFeed};
+use crate::partials::{entry_list::entry_list, feed_link::feed_link, layout::Layout};
 use crate::uuid::Base62Uuid;
+use crate::turbo_stream::TurboStream;
 
 pub async fn get(
     Path(id): Path<Base62Uuid>,
@@ -17,7 +24,107 @@ pub async fn get(
     let feed = get_feed(&pool, id.as_uuid()).await?;
     let entries = get_entries_for_feed(&pool, feed.feed_id, Default::default()).await?;
     Ok(layout.render(html! {
-        h1 { (feed.title.unwrap_or_else(|| "Untitled Feed".to_string())) }
+        h2 { (feed.title.unwrap_or_else(|| "Untitled Feed".to_string())) }
+        @if let Some(description) = feed.description {
+            p { (description) }
+        }
         (entry_list(entries))
     }))
 }
+
+#[serde_as]
+#[derive(Deserialize)]
+pub struct AddFeed {
+    url: String,
+    #[serde_as(as = "NoneAsEmptyString")]
+    title: Option<String>,
+    #[serde_as(as = "NoneAsEmptyString")]
+    description: Option<String>,
+}
+
+#[derive(thiserror::Error, Debug)]
+pub enum AddFeedError {
+    #[error("failed to fetch feed: {0}")]
+    FetchError(String, #[source] reqwest::Error),
+    #[error("failed to parse feed: {0}")]
+    ParseError(String, #[source] parser::ParseFeedError),
+    #[error("failed to create feed: {0}")]
+    CreateFeedError(String, #[source] Error),
+}
+pub type AddFeedResult<T, E = AddFeedError> = ::std::result::Result<T, E>;
+
+impl AddFeedError {
+    fn status_code(&self) -> StatusCode {
+        use AddFeedError::*;
+
+        match self {
+            FetchError(..) | ParseError(..) => StatusCode::UNPROCESSABLE_ENTITY,
+            CreateFeedError(..) => StatusCode::INTERNAL_SERVER_ERROR,
+        }
+    }
+}
+
+impl IntoResponse for AddFeedError {
+    fn into_response(self) -> Response {
+        (
+            self.status_code(),
+            TurboStream(
+                html! {
+                    turbo-stream action="append" target="feeds" {
+                        template {
+                            li { span class="error" { (self) } }
+                        }
+                    }
+                }
+                .into_string(),
+            ),
+        )
+            .into_response()
+    }
+}
+
+pub async fn post(
+    State(pool): State<PgPool>,
+    Form(add_feed): Form<AddFeed>,
+) -> AddFeedResult<Response> {
+    let client = Client::new();
+    let bytes = client
+        .get(&add_feed.url)
+        .send()
+        .await
+        .map_err(|err| AddFeedError::FetchError(add_feed.url.clone(), err))?
+        .bytes()
+        .await
+        .map_err(|err| AddFeedError::FetchError(add_feed.url.clone(), err))?;
+    let parsed_feed = parser::parse(&bytes[..])
+        .map_err(|err| AddFeedError::ParseError(add_feed.url.clone(), err))?;
+    let feed = create_feed(
+        &pool,
+        CreateFeed {
+            title: add_feed
+                .title
+                .map_or_else(|| parsed_feed.title.map(|text| text.content), Some),
+            url: add_feed.url.clone(),
+            feed_type: parsed_feed.feed_type.into(),
+            description: add_feed
+                .description
+                .map_or_else(|| parsed_feed.description.map(|text| text.content), Some),
+        },
+    )
+    .await
+    .map_err(|err| AddFeedError::CreateFeedError(add_feed.url.clone(), err))?;
+    Ok((
+        StatusCode::CREATED,
+        TurboStream(
+            html! {
+                turbo-stream action="append" target="feeds" {
+                    template {
+                        li { (feed_link(&feed)) }
+                    }
+                }
+            }
+            .into_string(),
+        ),
+    )
+        .into_response())
+}

src/handlers/feeds.rs

@@ -5,17 +5,31 @@ use sqlx::PgPool;
 
 use crate::error::Result;
 use crate::models::feed::get_feeds;
-use crate::partials::layout::Layout;
-use crate::uuid::Base62Uuid;
+use crate::partials::{feed_link::feed_link, layout::Layout};
 
 pub async fn get(State(pool): State<PgPool>, layout: Layout) -> Result<Response> {
     let feeds = get_feeds(&pool).await?;
     Ok(layout.render(html! {
-        ul {
+        h2 { "Feeds" }
+        div class="feeds" {
+            ul id="feeds" {
                 @for feed in feeds {
-                @let title = feed.title.unwrap_or_else(|| "Untitled Feed".to_string());
-                @let feed_url = format!("/feed/{}", Base62Uuid::from(feed.feed_id));
-                li { a href=(feed_url) { (title) } }
+                    li { (feed_link(&feed)) }
+                }
+            }
+            div class="add-feed" {
+                h3 { "Add Feed" }
+                form action="/feed" method="post" class="add-feed-form" {
+                    div class="form-grid" {
+                        label for="url" { "URL (required): " }
+                        input type="text" id="url" name="url" placeholder="https://example.com/feed.xml" required="true";
+                        label for="title" { "Title: " }
+                        input type="text" id="title" name="title" placeholder="Feed title";
+                        label { "Description: " }
+                        textarea id="description" name="description" placeholder="Feed description" {}
+                    }
+                    input type="submit" value="Add Feed";
+                }
             } 
         }
     }))

src/lib.rs

@@ -6,6 +6,7 @@ pub mod log;
 pub mod models;
 pub mod partials;
 pub mod state;
+pub mod turbo_stream;
 pub mod utils;
 pub mod uuid;
 

src/main.rs

@@ -55,6 +55,7 @@ async fn main() -> Result<()> {
         .route("/api/v1/entry/:id", get(handlers::api::entry::get))
         .route("/", get(handlers::home::get))
         .route("/feeds", get(handlers::feeds::get))
+        .route("/feed", post(handlers::feed::post))
         .route("/feed/:id", get(handlers::feed::get))
         .route("/entry/:id", get(handlers::entry::get))
         .route("/log", get(handlers::log::get))

src/models/feed.rs

@@ -27,6 +27,16 @@ impl FromStr for FeedType {
     }
 }
 
+impl From<feed_rs::model::FeedType> for FeedType {
+    fn from(value: feed_rs::model::FeedType) -> Self {
+        match value {
+            feed_rs::model::FeedType::Atom => FeedType::Atom,
+            // TODO: this isn't really accurate
+            _ => FeedType::Rss,
+        }
+    }
+}
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Feed {
     pub feed_id: Uuid,

src/partials/feed_link.rs

@@ -0,0 +1,12 @@
+use maud::{html, Markup};
+
+use crate::models::feed::Feed;
+use crate::uuid::Base62Uuid;
+
+pub fn feed_link(feed: &Feed) -> Markup {
+    let title = feed.title.clone().unwrap_or_else(|| "Untitled Feed".to_string());
+    let feed_url = format!("/feed/{}", Base62Uuid::from(feed.feed_id));
+    html! {
+        a href=(feed_url) { (title) }
+    }
+}

src/partials/mod.rs

@@ -1,3 +1,4 @@
 pub mod entry_list;
+pub mod feed_link;
 pub mod header;
 pub mod layout;

src/turbo_stream.rs

@@ -0,0 +1,34 @@
+use axum::response::{IntoResponse, Response};
+use axum::http::{header, HeaderValue};
+use axum::body::{Bytes, Full};
+
+/// A Turbo Stream HTML response.
+///
+/// See [the Turbo Streams specification](https://turbo.hotwire.dev/handbook/streams) for more 
+/// details.
+///
+/// Will automatically get `Content-Type: text/vnd.turbo-stream.html`.
+#[derive(Clone, Copy, Debug)]
+pub struct TurboStream<T>(pub T);
+
+impl<T> IntoResponse for TurboStream<T>
+where
+    T: Into<Full<Bytes>>,
+{
+    fn into_response(self) -> Response {
+        (
+            [(
+                header::CONTENT_TYPE,
+                HeaderValue::from_static("text/vnd.turbo-stream.html"),
+            )],
+            self.0.into(),
+        )
+            .into_response()
+    }
+}
+
+impl<T> From<T> for TurboStream<T> {
+    fn from(inner: T) -> Self {
+        Self(inner)
+    }
+}