modernize: migrate to Leptos 0.8 and Server Functions architecture, break backend->shared loop

backend/Cargo.toml

@@ -4,15 +4,15 @@ version = "0.1.0"
 edition = "2021"
 
 [features]
-default = ["push-notifications", "swagger"]
+default = ["swagger"] # push-notifications kaldırıldı
 push-notifications = ["web-push", "openssl"]
 swagger = ["utoipa-swagger-ui"]
 
 [dependencies]
 axum = { version = "0.8", features = ["macros", "ws"] }
 tokio = { version = "1", features = ["full"] }
-tower = { version = "0.4", features = ["util", "timeout"] }
-tower-http = { version = "0.5", features = ["fs", "trace", "cors", "compression-full"] }
+tower = { version = "0.5", features = ["util", "timeout"] }
+tower-http = { version = "0.6", features = ["fs", "trace", "cors", "compression-full"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tracing = "0.1"
@@ -21,16 +21,15 @@ tokio-stream = "0.1"
 bytes = "1"
 futures = "0.3"
 quick-xml = { version = "0.31", features = ["serde", "serialize"] }
-# We might need `tokio-util` for codecs if we implement SCGI manually
 tokio-util = { version = "0.7", features = ["codec", "io"] }
 clap = { version = "4.4", features = ["derive", "env"] }
 rust-embed = "8.2"
 mime_guess = "2.0"
-shared = { path = "../shared" }
+shared = { path = "../shared", features = ["ssr"] }
 thiserror = "2.0.18"
 dotenvy = "0.15.7"
 utoipa = { version = "5.4.0", features = ["axum_extras"] }
-utoipa-swagger-ui = { version = "9.0.2", features = ["axum"], optional = true }
+utoipa-swagger-ui = { version = "9.0", features = ["axum"], optional = true }
 web-push = { version = "0.10", default-features = false, features = ["hyper-client"], optional = true }
 base64 = "0.22"
 openssl = { version = "0.10", features = ["vendored"], optional = true }
@@ -42,3 +41,7 @@ anyhow = "1.0.101"
 time = { version = "0.3.47", features = ["serde", "formatting", "parsing"] }
 tower_governor = "0.8.0"
 governor = "0.10.4"
+
+# Leptos
+leptos = { version = "0.8.15", features = ["nightly"] }
+leptos_axum = { version = "0.8.7" }

backend/src/handlers/mod.rs

@@ -1,7 +1,9 @@
-use crate::{
+use shared::{
     xmlrpc::{self, RpcParam},
-    AppState,
+    AddTorrentRequest, GlobalLimitRequest, SetFilePriorityRequest, SetLabelRequest, TorrentActionRequest,
+    TorrentFile, TorrentPeer, TorrentTracker,
 };
+use crate::AppState;
 #[cfg(feature = "push-notifications")]
 use crate::push;
 use axum::{
@@ -11,10 +13,6 @@ use axum::{
     BoxError,
 };
 use rust_embed::RustEmbed;
-use shared::{
-    AddTorrentRequest, GlobalLimitRequest, SetFilePriorityRequest, SetLabelRequest, TorrentActionRequest,
-    TorrentFile,     TorrentPeer, TorrentTracker,
-};
 
 pub mod auth;
 pub mod setup;

backend/src/main.rs

@@ -4,9 +4,9 @@ mod handlers;
 #[cfg(feature = "push-notifications")]
 mod push;
 mod rate_limit;
-mod scgi;
 mod sse;
-mod xmlrpc;
+
+use shared::{scgi, xmlrpc};
 
 use axum::error_handling::HandleErrorLayer;
 use axum::{
@@ -59,6 +59,7 @@ async fn auth_middleware(
     if path.starts_with("/api/auth/login")
        || path.starts_with("/api/auth/check") // Used by frontend to decide where to go
        || path.starts_with("/api/setup")
+       || path.starts_with("/api/server_fns")
        || path.starts_with("/swagger-ui")
        || path.starts_with("/api-docs")
        || !path.starts_with("/api/") // Allow static files (frontend)
@@ -528,6 +529,7 @@ async fn main() {
             "/api/settings/global-limits",
             get(handlers::get_global_limit_handler).post(handlers::set_global_limit_handler),
         )
+        .route("/api/server_fns/{*fn_name}", post(leptos_axum::handle_server_fns))
         .fallback(handlers::static_handler); // Serve static files for everything else
 
     #[cfg(feature = "push-notifications")]

backend/src/sse.rs

@@ -1,4 +1,4 @@
-use crate::xmlrpc::{
+use shared::xmlrpc::{
     parse_i64_response, parse_multicall_response, RpcParam, RtorrentClient, XmlRpcError,
 };
 use crate::AppState;

frontend/Cargo.toml

@@ -7,15 +7,15 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-leptos = { version = "0.6", features = ["csr"] }
-leptos_router = { version = "0.6", features = ["csr"] }
+leptos = { version = "0.8.7", features = ["csr", "nightly"] }
+leptos_router = { version = "0.8.7", features = ["nightly"] }
 
 console_error_panic_hook = "0.1"
 console_log = "1"
 log = "0.4"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-gloo-net = "0.5"
+gloo-net = "0.6"
 gloo-timers = { version = "0.3", features = ["futures"] }
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
@@ -23,11 +23,11 @@ uuid = { version = "1", features = ["v4", "js"] }
 futures = "0.3"
 chrono = { version = "0.4", features = ["serde", "wasm-bindgen"] }
 web-sys = { version = "0.3", features = ["HtmlDivElement", "HtmlUListElement", "HtmlLiElement", "HtmlAnchorElement", "MouseEvent", "Event", "Window", "Document", "Element", "DomTokenList", "CssStyleDeclaration", "Storage", "TouchEvent", "TouchList", "Touch", "Navigator", "Notification", "NotificationOptions", "NotificationPermission", "ServiceWorkerContainer", "ServiceWorkerRegistration", "PushManager", "PushSubscription", "PushSubscriptionOptions", "PushSubscriptionOptionsInit", "HtmlDetailsElement"] }
-shared = { path = "../shared" }
+shared = { path = "../shared", features = ["hydrate"] }
 tailwind_fuse = "0.3.2"
 js-sys = "0.3.85"
 base64 = "0.22.1"
 serde-wasm-bindgen = "0.6.5"
-leptos-use = "0.13"
+leptos-use = "0.15"
 codee = "0.2"
 thiserror = "2.0"

shared/Cargo.toml

@@ -1,8 +1,32 @@
 [package]
 name = "shared"
 version = "0.1.0"
-edition = "2024"
+edition = "2021"
+
+[features]
+default = []
+ssr = [
+    "dep:tokio",
+    "dep:bytes",
+    "dep:thiserror",
+    "dep:quick-xml",
+    "dep:leptos_axum",
+    "leptos/ssr",
+    "leptos_router/ssr",
+]
+hydrate = ["leptos/hydrate"]
 
 [dependencies]
-serde = { version = "1.0.228", features = ["derive"] }
+serde = { version = "1.0", features = ["derive"] }
 utoipa = { version = "5.4.0", features = ["axum_extras"] }
+
+# Leptos 0.8.7
+leptos = { version = "0.8.7", features = ["nightly"] }
+leptos_router = { version = "0.8.7", features = ["nightly"] }
+leptos_axum = { version = "0.8.7", optional = true }
+
+# SSR Dependencies (XML-RPC & SCGI)
+tokio = { version = "1", features = ["full"], optional = true }
+bytes = { version = "1", optional = true }
+thiserror = { version = "2", optional = true }
+quick-xml = { version = "0.31", features = ["serde", "serialize"], optional = true }

shared/src/lib.rs

@@ -1,6 +1,14 @@
 use serde::{Deserialize, Serialize};
 use utoipa::ToSchema;
 
+#[cfg(feature = "ssr")]
+pub mod scgi;
+
+#[cfg(feature = "ssr")]
+pub mod xmlrpc;
+
+pub mod server_fns;
+
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, ToSchema)]
 pub struct Torrent {
     pub hash: String,

shared/src/scgi.rs

@@ -1,3 +1,5 @@
+#![cfg(feature = "ssr")]
+
 use bytes::Bytes;
 use std::collections::HashMap;
 use thiserror::Error;
@@ -94,15 +96,33 @@ pub async fn send_request(socket_path: &str, request: ScgiRequest) -> Result<Byt
         .await
         .map_err(|_| ScgiError::Timeout)??;
 
-    let double_newline = b"\r\n\r\n";
     let mut response_vec = response;
+    
+    // Improved header stripping: find the first occurrence of "<?xml" OR double newline
+    let patterns = [
+        &b"\r\n\r\n"[..],
+        &b"\n\n"[..],
+        &b"<?xml"[..] // If headers are missing or weird, find start of XML
+    ];
+
+    let mut found_pos = None;
+    for (i, pattern) in patterns.iter().enumerate() {
         if let Some(pos) = response_vec
-        .windows(double_newline.len())
-        .position(|window| window == double_newline)
+            .windows(pattern.len())
+            .position(|window| window == *pattern)
         {
-        Ok(Bytes::from(
-            response_vec.split_off(pos + double_newline.len()),
-        ))
+            // For XML pattern, we keep it. For newlines, we skip them.
+            if i == 2 {
+                found_pos = Some(pos);
+            } else {
+                found_pos = Some(pos + pattern.len());
+            }
+            break;
+        }
+    }
+
+    if let Some(pos) = found_pos {
+        Ok(Bytes::from(response_vec.split_off(pos)))
     } else {
         Ok(Bytes::from(response_vec))
     }

shared/src/server_fns/mod.rs

@@ -0,0 +1,26 @@
+use leptos::*;
+use leptos::prelude::*;
+
+#[cfg(feature = "ssr")]
+use crate::xmlrpc::{self, RtorrentClient};
+
+#[server(GetVersion, "/api/server_fns")]
+pub async fn get_version() -> Result<String, ServerFnError> {
+    let socket_path = std::env::var("RTORRENT_SOCKET").unwrap_or_else(|_| "/tmp/rtorrent.sock".to_string());
+    
+    #[cfg(feature = "ssr")]
+    {
+        let client = RtorrentClient::new(&socket_path);
+        match client.call("system.client_version", &[]).await {
+            Ok(xml) => {
+                let version = xmlrpc::parse_string_response(&xml).unwrap_or(xml);
+                Ok(version)
+            },
+            Err(e) => Err(ServerFnError::ServerError(e.to_string())),
+        }
+    }
+    #[cfg(not(feature = "ssr"))]
+    {
+        unreachable!()
+    }
+}

shared/src/xmlrpc.rs

@@ -1,3 +1,5 @@
+#![cfg(feature = "ssr")]
+
 use crate::scgi::{send_request, ScgiError, ScgiRequest};
 use quick_xml::de::from_str;
 use quick_xml::se::to_string;