Radarr v3 shim for Jellyseerr (#62)

crates/arr-daemon/src/main.rs

@@ -3,9 +3,12 @@
 mod config;
 
 use std::process::ExitCode;
+use std::sync::Arc;
 
 use arr_api::{AppState, Upstreams};
+use arr_compat::CompatState;
 use arr_db::Db;
+use arr_meta::TmdbClient;
 use config::Config;
 use tower_http::trace::TraceLayer;
 
@@ -59,6 +62,8 @@ enum Error {
     Database(#[from] sqlx::Error),
     #[error("database migration: {0}")]
     Migration(#[from] sqlx::migrate::MigrateError),
+    #[error("tmdb client: {0}")]
+    Tmdb(#[from] arr_meta::Error),
     #[error("bind {addr}: {source}")]
     Bind {
         addr: std::net::SocketAddr,
@@ -73,6 +78,13 @@ async fn run() -> Result<(), Error> {
     let database = Db::connect(&config.database_path).await?;
     database.migrate().await?;
 
+    // Jellyseerr's Radarr shim (DESIGN.md §9.4) reads the same database and
+    // needs its own TMDB client for `movie/lookup`.
+    let mut compat = CompatState::new(database.clone());
+    if let Some(key) = &config.tmdb_api_key {
+        compat = compat.with_tmdb(Arc::new(TmdbClient::new(key)?));
+    }
+
     let state = AppState::new(
         Upstreams::new(config.prowlarr_url, config.transmission_url)
             .with_prowlarr_api_key(config.prowlarr_api_key)
@@ -80,7 +92,9 @@ async fn run() -> Result<(), Error> {
     )?
     .with_database(database);
 
-    let app = arr_api::router(state).layer(TraceLayer::new_for_http());
+    let app = arr_api::router(state)
+        .merge(arr_compat::router(compat))
+        .layer(TraceLayer::new_for_http());
 
     let listener = tokio::net::TcpListener::bind(config.bind_addr)
         .await