add lost opds root feed

Cargo.lock

@@ -305,7 +305,7 @@ checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
 
 [[package]]
 name = "calibre-db"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "r2d2",
  "r2d2_sqlite",
@@ -1222,7 +1222,7 @@ checksum = "241eaef5fd12c88705a01fc1066c48c4b36e0dd4377dcdc7ec3942cea7a69956"
 
 [[package]]
 name = "little-hesinde"
-version = "0.3.4"
+version = "0.3.5"
 dependencies = [
  "axum",
  "calibre-db",

calibre-db/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "calibre-db"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2024"
 license =  { workspace = true }
 authors =  { workspace = true }

little-hesinde/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "little-hesinde"
-version = "0.3.4"
+version = "0.3.5"
 edition = "2024"
 license =  { workspace = true }
 authors =  { workspace = true }
@@ -9,7 +9,7 @@ description = "A very simple ebook server for a calibre library, providing a htm
 
 [dependencies]
 axum = { version = "0.8.4", features = ["http2", "tracing"] }
-calibre-db = { path = "../calibre-db/", version = "0.1.0" }
+calibre-db = { path = "../calibre-db/", version = "0.1.1" }
 clap = { version = "4.5.40", features = ["derive", "env"] }
 image = { version = "0.25.6", default-features = false, features = ["jpeg", "rayon"] }
 mime_guess = "2.0.5"

little-hesinde/src/api/opds.rs

@@ -1,6 +1,7 @@
 //! Handlers for OPDS feeds.
 pub mod authors;
 pub mod books;
+pub mod feed;
 pub mod recent;
 pub mod search;
 pub mod series;

little-hesinde/src/api/opds/feed.rs

@@ -0,0 +1,140 @@
+use axum::{
+    http::{StatusCode, header},
+    response::{IntoResponse, Response},
+};
+use snafu::{ResultExt, Snafu};
+use time::OffsetDateTime;
+
+use crate::{
+    APP_NAME,
+    api::{
+        OPDS_TAG,
+        error::{ErrorResponse, HttpStatus},
+    },
+    http_error,
+    opds::{
+        content::Content, entry::Entry, error::AsXmlError, feed::Feed, link::Link,
+        media_type::MediaType, relation::Relation,
+    },
+};
+
+#[derive(Debug, Snafu)]
+/// Errors that can occur when rendering the root OPDS feed.
+pub enum OdpsFeedError {
+    /// A failure to create the OPDS feed.
+    #[snafu(display("Failed to create opds feed."))]
+    Feed { source: AsXmlError },
+}
+impl HttpStatus for OdpsFeedError {
+    fn status_code(&self) -> StatusCode {
+        match self {
+            OdpsFeedError::Feed { source: _ } => StatusCode::INTERNAL_SERVER_ERROR,
+        }
+    }
+}
+http_error!(OdpsFeedError);
+
+/// Render all books as OPDS entries embedded in a feed.
+#[utoipa::path(
+    get,
+    path = "/",
+    tag = OPDS_TAG,
+    responses(
+        (status = OK, content_type = "application/atom+xml"),
+        (status = 500, description = "Server failure.", body = ErrorResponse)
+    )
+)]
+pub async fn handler() -> Result<Response, OdpsFeedError> {
+    let now = OffsetDateTime::now_utc();
+
+    let self_link = Link {
+        href: "/opds".to_string(),
+        media_type: MediaType::Navigation,
+        rel: Relation::Myself,
+        title: None,
+        count: None,
+    };
+    let books_entry = Entry {
+        title: "Books".to_string(),
+        id: format!("{APP_NAME}:books"),
+        updated: now,
+        content: Some(Content {
+            media_type: MediaType::Text,
+            content: "Index of all books".to_string(),
+        }),
+        author: None,
+        links: vec![Link {
+            href: "/opds/books".to_string(),
+            media_type: MediaType::Navigation,
+            rel: Relation::Subsection,
+            title: None,
+            count: None,
+        }],
+    };
+
+    let authors_entry = Entry {
+        title: "Authors".to_string(),
+        id: format!("{APP_NAME}:authors"),
+        updated: now,
+        content: Some(Content {
+            media_type: MediaType::Text,
+            content: "Index of all authors".to_string(),
+        }),
+        author: None,
+        links: vec![Link {
+            href: "/opds/authors".to_string(),
+            media_type: MediaType::Navigation,
+            rel: Relation::Subsection,
+            title: None,
+            count: None,
+        }],
+    };
+
+    let series_entry = Entry {
+        title: "Series".to_string(),
+        id: format!("{APP_NAME}:series"),
+        updated: now,
+        content: Some(Content {
+            media_type: MediaType::Text,
+            content: "Index of all series".to_string(),
+        }),
+        author: None,
+        links: vec![Link {
+            href: "/opds/series".to_string(),
+            media_type: MediaType::Navigation,
+            rel: Relation::Subsection,
+            title: None,
+            count: None,
+        }],
+    };
+
+    let recents_entry = Entry {
+        title: "Recent Additions".to_string(),
+        id: format!("{APP_NAME}:recentbooks"),
+        updated: now,
+        content: Some(Content {
+            media_type: MediaType::Text,
+            content: "Recently added books".to_string(),
+        }),
+        author: None,
+        links: vec![Link {
+            href: "/opds/recent".to_string(),
+            media_type: MediaType::Navigation,
+            rel: Relation::Subsection,
+            title: None,
+            count: None,
+        }],
+    };
+
+    let feed = Feed::create(
+        now,
+        &format!("{APP_NAME}:catalog"),
+        "Little Hesinde",
+        self_link,
+        vec![],
+        vec![authors_entry, series_entry, books_entry, recents_entry],
+    );
+    let xml = feed.as_xml().context(FeedSnafu)?;
+
+    Ok(([(header::CONTENT_TYPE, "application/atom+xml")], xml).into_response())
+}

little-hesinde/src/api/routes.rs

@@ -16,6 +16,7 @@ pub fn router(state: AppState) -> OpenApiRouter {
     let store = Arc::new(state);
 
     let opds_routes = OpenApiRouter::new()
+        .routes(routes!(opds::feed::handler))
         .routes(routes!(opds::books::handler))
         .routes(routes!(opds::recent::handler))
         .routes(routes!(opds::series::handler))