feat(arr): expose live downloads

crates/arr-dl/src/lib.rs

@@ -68,6 +68,13 @@ pub struct Torrent {
     pub hash: String,
     pub state: TorrentState,
     pub progress: f64,
+    /// Download rate in bytes per second.
+    pub download_rate: u64,
+    /// Estimated seconds until complete, or `None` when Transmission cannot
+    /// estimate it.
+    pub eta: Option<i64>,
+    /// Transmission's error message, when the torrent has errored.
+    pub error: Option<String>,
     pub download_dir: PathBuf,
     pub labels: Vec<String>,
     /// Transmission has stopped this torrent because its configured seeding
@@ -230,7 +237,8 @@ impl TransmissionClient {
                 json!({
                     "fields": [
                         "id", "name", "hashString", "status", "percentDone",
-                        "downloadDir", "labels", "isFinished"
+                        "rateDownload", "eta", "errorString", "downloadDir",
+                        "labels", "isFinished"
                     ]
                 }),
             )
@@ -384,6 +392,12 @@ struct RpcTorrent {
     status: u8,
     #[serde(rename = "percentDone")]
     progress: f64,
+    #[serde(rename = "rateDownload", default)]
+    download_rate: u64,
+    #[serde(default)]
+    eta: Option<i64>,
+    #[serde(rename = "errorString", default)]
+    error: String,
     #[serde(rename = "downloadDir")]
     download_dir: PathBuf,
     #[serde(default)]
@@ -411,6 +425,9 @@ impl From<RpcTorrent> for Torrent {
             hash: value.hash,
             state,
             progress: value.progress,
+            download_rate: value.download_rate,
+            eta: value.eta.filter(|eta| *eta >= 0),
+            error: (!value.error.is_empty()).then_some(value.error),
             download_dir: value.download_dir,
             labels: value.labels,
             is_finished: value.is_finished,