feat: add centralized API service layer for frontend

- Create frontend/src/api/mod.rs with centralized HTTP client and error handling
- Implement api::auth module (login, logout, check_auth, get_user)
- Implement api::torrent module (add, action, delete, start, stop, set_label, set_priority)
- Implement api::setup module (get_status, setup)
- Implement api::settings module (set_global_limits)
- Implement api::push module (get_public_key, subscribe)
- Update all components to use api service layer instead of direct gloo_net calls
- Add thiserror dependency for error handling

Cargo.lock

@@ -310,7 +310,6 @@ dependencies = [
  "serde_json",
  "shared",
  "sqlx",
- "strum",
  "thiserror 2.0.18",
  "time",
  "tokio",
@@ -545,7 +544,7 @@ version = "4.5.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a92793da1a46a5f2a02a6f4c46c6496b28c43638adea8306fcb0caa1634f24e5"
 dependencies = [
- "heck 0.5.0",
+ "heck",
  "proc-macro2",
  "quote",
  "syn 2.0.114",
@@ -1538,12 +1537,6 @@ dependencies = [
  "hashbrown 0.15.5",
 ]
 
-[[package]]
-name = "heck"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
-
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -3711,7 +3704,7 @@ checksum = "19a9c1841124ac5a61741f96e1d9e2ec77424bf323962dd894bdb93f37d5219b"
 dependencies = [
  "dotenvy",
  "either",
- "heck 0.5.0",
+ "heck",
  "hex",
  "once_cell",
  "proc-macro2",
@@ -3854,28 +3847,6 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
-[[package]]
-name = "strum"
-version = "0.25.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290d54ea6f91c969195bdbcd7442c8c2a2ba87da8bf60a7ee86a235d4bc1e125"
-dependencies = [
- "strum_macros",
-]
-
-[[package]]
-name = "strum_macros"
-version = "0.25.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23dc1fa9ac9c169a78ba62f0b841814b7abae11bdd047b9c58f893439e309ea0"
-dependencies = [
- "heck 0.4.1",
- "proc-macro2",
- "quote",
- "rustversion",
- "syn 2.0.114",
-]
-
 [[package]]
 name = "subtle"
 version = "2.6.1"

backend/Cargo.toml

@@ -42,4 +42,3 @@ anyhow = "1.0.101"
 time = { version = "0.3.47", features = ["serde", "formatting", "parsing"] }
 tower_governor = "0.8.0"
 governor = "0.10.4"
-strum = { version = "0.25", features = ["derive", "strum_macros"] }

backend/src/sse.rs

@@ -7,80 +7,95 @@ use axum::response::sse::{Event, Sse};
 use futures::stream::{self, Stream};
 use shared::{AppEvent, GlobalStats, Torrent, TorrentStatus};
 use std::convert::Infallible;
-use strum::{Display, EnumString};
 use tokio_stream::StreamExt;
 
-#[derive(Debug, Clone, Copy, EnumString, Display, PartialEq)]
+// Field definitions to keep query and parser in sync
-enum RtorrentField {
+mod fields {
-    #[strum(serialize = "d.hash=")]
+    pub const IDX_HASH: usize = 0;
-    Hash,
+    pub const CMD_HASH: &str = "d.hash=";
-    #[strum(serialize = "d.name=")]
+
-    Name,
+    pub const IDX_NAME: usize = 1;
-    #[strum(serialize = "d.size_bytes=")]
+    pub const CMD_NAME: &str = "d.name=";
-    Size,
+
-    #[strum(serialize = "d.bytes_done=")]
+    pub const IDX_SIZE: usize = 2;
-    Completed,
+    pub const CMD_SIZE: &str = "d.size_bytes=";
-    #[strum(serialize = "d.down.rate=")]
+
-    DownRate,
+    pub const IDX_COMPLETED: usize = 3;
-    #[strum(serialize = "d.up.rate=")]
+    pub const CMD_COMPLETED: &str = "d.bytes_done=";
-    UpRate,
+
-    #[strum(serialize = "d.state=")]
+    pub const IDX_DOWN_RATE: usize = 4;
-    State,
+    pub const CMD_DOWN_RATE: &str = "d.down.rate=";
-    #[strum(serialize = "d.complete=")]
+
-    Complete,
+    pub const IDX_UP_RATE: usize = 5;
-    #[strum(serialize = "d.message=")]
+    pub const CMD_UP_RATE: &str = "d.up.rate=";
-    Message,
+
-    #[strum(serialize = "d.left_bytes=")]
+    pub const IDX_STATE: usize = 6;
-    LeftBytes,
+    pub const CMD_STATE: &str = "d.state=";
-    #[strum(serialize = "d.creation_date=")]
+
-    CreationDate,
+    pub const IDX_COMPLETE: usize = 7;
-    #[strum(serialize = "d.hashing=")]
+    pub const CMD_COMPLETE: &str = "d.complete=";
-    Hashing,
+
-    #[strum(serialize = "d.custom1=")]
+    pub const IDX_MESSAGE: usize = 8;
-    Label,
+    pub const CMD_MESSAGE: &str = "d.message=";
+
+    pub const IDX_LEFT_BYTES: usize = 9;
+    pub const CMD_LEFT_BYTES: &str = "d.left_bytes=";
+
+    pub const IDX_CREATION_DATE: usize = 10;
+    pub const CMD_CREATION_DATE: &str = "d.creation_date=";
+
+    pub const IDX_HASHING: usize = 11;
+    pub const CMD_HASHING: &str = "d.hashing=";
+
+    pub const IDX_LABEL: usize = 12;
+    pub const CMD_LABEL: &str = "d.custom1=";
 }
 
-const RTORRENT_FIELDS: &[RtorrentField] = &[
+use fields::*;
-    RtorrentField::Hash,
+
-    RtorrentField::Name,
+// Constants for rTorrent fields to ensure query and parser stay in sync
-    RtorrentField::Size,
+const RTORRENT_FIELDS: &[&str] = &[
-    RtorrentField::Completed,
+    "",     // Ignored by multicall pattern
-    RtorrentField::DownRate,
+    "main", // View
-    RtorrentField::UpRate,
+    CMD_HASH,
-    RtorrentField::State,
+    CMD_NAME,
-    RtorrentField::Complete,
+    CMD_SIZE,
-    RtorrentField::Message,
+    CMD_COMPLETED,
-    RtorrentField::LeftBytes,
+    CMD_DOWN_RATE,
-    RtorrentField::CreationDate,
+    CMD_UP_RATE,
-    RtorrentField::Hashing,
+    CMD_STATE,
-    RtorrentField::Label,
+    CMD_COMPLETE,
+    CMD_MESSAGE,
+    CMD_LEFT_BYTES,
+    CMD_CREATION_DATE,
+    CMD_HASHING,
+    CMD_LABEL,
 ];
 
-fn get_field_value(row: &Vec<String>, field: RtorrentField) -> String {
+fn parse_long(s: Option<&String>) -> i64 {
-    let idx = RTORRENT_FIELDS.iter().position(|&f| f == field).unwrap_or(0);
+    s.map(|v| v.parse().unwrap_or(0)).unwrap_or(0)
-    row.get(idx).cloned().unwrap_or_default()
 }
 
-fn parse_long(s: &str) -> i64 {
+fn parse_string(s: Option<&String>) -> String {
-    s.parse().unwrap_or(0)
+    s.cloned().unwrap_or_default()
 }
 
 /// Converts a raw row of strings from rTorrent XML-RPC into a generic Torrent struct
-fn from_rtorrent_row(row: &Vec<String>) -> Torrent {
+fn from_rtorrent_row(row: Vec<String>) -> Torrent {
-    let hash = get_field_value(row, RtorrentField::Hash);
+    let hash = parse_string(row.get(IDX_HASH));
-    let name = get_field_value(row, RtorrentField::Name);
+    let name = parse_string(row.get(IDX_NAME));
-    let size = parse_long(&get_field_value(row, RtorrentField::Size));
+    let size = parse_long(row.get(IDX_SIZE));
-    let completed = parse_long(&get_field_value(row, RtorrentField::Completed));
+    let completed = parse_long(row.get(IDX_COMPLETED));
-    let down_rate = parse_long(&get_field_value(row, RtorrentField::DownRate));
+    let down_rate = parse_long(row.get(IDX_DOWN_RATE));
-    let up_rate = parse_long(&get_field_value(row, RtorrentField::UpRate));
+    let up_rate = parse_long(row.get(IDX_UP_RATE));
 
-    let state = parse_long(&get_field_value(row, RtorrentField::State));
+    let state = parse_long(row.get(IDX_STATE));
-    let is_complete = parse_long(&get_field_value(row, RtorrentField::Complete));
+    let is_complete = parse_long(row.get(IDX_COMPLETE));
-    let message = get_field_value(row, RtorrentField::Message);
+    let message = parse_string(row.get(IDX_MESSAGE));
-    let left_bytes = parse_long(&get_field_value(row, RtorrentField::LeftBytes));
+    let left_bytes = parse_long(row.get(IDX_LEFT_BYTES));
-    let added_date = parse_long(&get_field_value(row, RtorrentField::CreationDate));
+    let added_date = parse_long(row.get(IDX_CREATION_DATE));
-    let is_hashing = parse_long(&get_field_value(row, RtorrentField::Hashing));
+    let is_hashing = parse_long(row.get(IDX_HASHING));
-    let label_raw = get_field_value(row, RtorrentField::Label);
+    let label_raw = parse_string(row.get(IDX_LABEL));
 
     let label = if label_raw.is_empty() {
         None
@@ -131,10 +146,7 @@ fn from_rtorrent_row(row: &Vec<String>) -> Torrent {
 }
 
 pub async fn fetch_torrents(client: &RtorrentClient) -> Result<Vec<Torrent>, XmlRpcError> {
-    let params: Vec<RpcParam> = RTORRENT_FIELDS
+    let params: Vec<RpcParam> = RTORRENT_FIELDS.iter().map(|s| RpcParam::from(*s)).collect();
-        .iter()
-        .map(|&f| RpcParam::from(f.to_string()))
-        .collect();
     let xml = client.call("d.multicall2", &params).await?;
 
     if xml.trim().is_empty() {
@@ -143,7 +155,7 @@ pub async fn fetch_torrents(client: &RtorrentClient) -> Result<Vec<Torrent>, Xml
 
     let rows = parse_multicall_response(&xml)?;
 
-    let torrents = rows.iter().map(from_rtorrent_row).collect();
+    let torrents = rows.into_iter().map(from_rtorrent_row).collect();
 
     Ok(torrents)
 }