chore: add theme import for file association

src-tauri/Cargo.lock

@@ -1010,6 +1010,7 @@ dependencies = [
  "tauri-plugin-shell",
  "tauri-plugin-single-instance",
  "tokio",
+ "url",
  "widestring",
  "winapi",
  "windows-sys 0.61.2",

src-tauri/Cargo.toml

@@ -47,6 +47,7 @@ once_cell = "1.21.4"
 futures-util = "0.3.32"
 byteorder = "1.5.0"
 anyhow = "1.0.102"
+url = "2"
 
 [target.'cfg(windows)'.dependencies]
 winreg = "0.56.0"

src-tauri/src/commands.rs

@@ -12,6 +12,7 @@ use tokio::io::AsyncWriteExt;
 use tokio::process::Command;
 use tokio::time::{Duration, sleep};
 
+use crate::OpenedUrls;
 use crate::osudb::parse_osudb;
 use crate::presence;
 use crate::utils::{
@@ -20,6 +21,11 @@ use crate::utils::{
     set_osu_config_vals, set_osu_user_config_vals,
 };
 
+#[tauri::command]
+pub fn opened_urls(app: tauri::AppHandle) -> Vec<PathBuf> {
+    app.state::<OpenedUrls>().0.lock().unwrap().clone()
+}
+
 #[tauri::command]
 pub fn get_launcher_version() -> String {
     env!("CARGO_PKG_VERSION").to_string()
@@ -163,7 +169,12 @@ pub async fn get_beatmapsets_count(folder: String) -> Option<u64> {
     }
     let osu_db_bytes = fs::read(osu_db_path).await.ok()?;
     let osu_db = parse_osudb(osu_db_bytes).ok()?;
-    let beatmap_sets = osu_db.beatmaps.iter().map(|b| b.beatmapset_id).collect::<HashSet<_>>().len();
+    let beatmap_sets = osu_db
+        .beatmaps
+        .iter()
+        .map(|b| b.beatmapset_id)
+        .collect::<HashSet<_>>()
+        .len();
     Some(beatmap_sets as u64)
 }
 
@@ -242,7 +253,7 @@ pub async fn get_skins_count(folder: String) -> Option<u64> {
     let skins_folder = path.join("Skins");
 
     if !skins_folder.exists() {
-        return None;
+        return Some(0);
     }
 
     let mut count = 0;
@@ -431,21 +442,48 @@ pub async fn run_osu(folder: String, patch: bool) -> Result<(), String> {
         }
     };
 
-    if patch {
+    #[cfg(windows)]
-        sleep(Duration::from_secs(3)).await;
+    {
+        if patch {
+            let patcher_exe_path = PathBuf::from(&folder)
+                .join("EZPPLauncher")
+                .join("patcher")
+                .join("osu!.patcher.exe");
 
-        let patcher_exe_path = PathBuf::from(&folder)
+            if patcher_exe_path.exists() {
-            .join("EZPPLauncher")
+                #[cfg(windows)]
-            .join("patcher")
+                {
-            .join("osu!.patcher.exe");
+                    let mut sys = System::new_all();
 
-        if patcher_exe_path.exists() {
+                    loop {
-            #[cfg(windows)]
+                        sys.refresh_processes(sysinfo::ProcessesToUpdate::All, true);
-            {
+
-                let _ = Command::new(&patcher_exe_path)
+                        let mut found = false;
-                    .creation_flags(DETACHED_PROCESS | CREATE_NEW_PROCESS_GROUP)
+
-                    .spawn()
+                        for (_pid, process) in sys.processes() {
-                    .map_err(|e| format!("Failed to run patcher: {e}"))?;
+                            if process.name() == "osu!.exe" {
+                                let pid = process.pid();
+                                let title = get_window_title_by_pid(pid);
+
+                                if !title.is_empty() && !title.contains("updater") {
+                                    found = true;
+                                    break;
+                                }
+                            }
+                        }
+
+                        if found {
+                            break;
+                        }
+
+                        sleep(Duration::from_millis(500)).await;
+                    }
+
+                    let _ = Command::new(&patcher_exe_path)
+                        .creation_flags(DETACHED_PROCESS | CREATE_NEW_PROCESS_GROUP)
+                        .spawn()
+                        .map_err(|e| format!("Failed to run patcher: {e}"))?;
+                }
             }
         }
     }

src-tauri/src/lib.rs

@@ -1,21 +1,25 @@
 // Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
+use std::path::PathBuf;
+use std::sync::Mutex;
 use tauri::Manager;
 
 pub mod commands;
+pub mod osudb;
 pub mod presence;
 pub mod utils;
-pub mod osudb;
 use crate::commands::{
     check_for_corruption, download_ezpp_launcher_update, download_ezpp_launcher_update_files,
     encrypt_string, exit, find_osu_installation, get_beatmapsets_count,
     get_ezpp_launcher_update_files, get_hwid, get_launcher_version, get_osu_release_stream,
     get_osu_skin, get_osu_version, get_platform, get_skins, get_skins_count, has_net8,
     has_osuwinello, has_wmctrl, install_ezpp_launcher_update, is_osu_running, open_url_in_browser,
-    presence_connect, presence_disconnect, presence_is_connected, presence_update_status,
+    opened_urls, presence_connect, presence_disconnect, presence_is_connected,
-    presence_update_user, replace_ui_files, run_osu, run_osu_updater, set_osu_config_values,
+    presence_update_status, presence_update_user, replace_ui_files, run_osu, run_osu_updater,
-    set_osu_user_config_values, valid_osu_folder,
+    set_osu_config_values, set_osu_user_config_values, valid_osu_folder,
 };
 
+struct OpenedUrls(Mutex<Vec<PathBuf>>);
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     #[cfg(target_os = "linux")]
@@ -33,7 +37,39 @@ pub fn run() {
     }
 
     let app = builder
+        .manage(OpenedUrls(Mutex::new(vec![])))
+        .setup(|app| {
+            let args = std::env::args().collect::<Vec<_>>();
+            if args.len() > 1 {
+                let mut files = Vec::new();
+
+                for maybe_file in args.iter().skip(1) {
+                    if maybe_file.starts_with("-") {
+                        continue;
+                    }
+
+                    if let Ok(url) = url::Url::parse(&maybe_file) {
+                        if let Ok(path) = url.to_file_path() {
+                            if path.extension().and_then(|str| str.to_str())
+                                == Some("ezpplauncher-theme")
+                            {
+                                files.push(path);
+                            }
+                        }
+                    } else {
+                        let maybe_file_path = PathBuf::from(maybe_file);
+                        if maybe_file_path.extension().and_then(|str| str.to_str()) == Some("ezpplauncher-theme") {
+                            files.push(maybe_file_path);
+                        }
+                    }
+                }
+
+                app.state::<OpenedUrls>().0.lock().unwrap().extend(files);
+            }
+            Ok(())
+        })
         .invoke_handler(tauri::generate_handler![
+            opened_urls,
             get_hwid,
             find_osu_installation,
             valid_osu_folder,

src-tauri/src/presence.rs

@@ -3,13 +3,17 @@ use discord_rich_presence::{
     activity::{Activity, Assets, Button, Timestamps},
 };
 use once_cell::sync::Lazy;
-use std::future::Future;
-use std::pin::Pin;
 use std::sync::Mutex as StdMutex;
 use std::time::{SystemTime, UNIX_EPOCH};
 use tokio::sync::{mpsc, oneshot};
 use tokio::time::{Duration, interval};
 
+#[derive(Clone, Debug)]
+pub struct PresenceButton {
+    pub label: String,
+    pub url: String,
+}
+
 #[derive(Clone, Debug)]
 pub struct PresenceData {
     pub state: String,
@@ -18,6 +22,21 @@ pub struct PresenceData {
     pub large_image_text: String,
     pub small_image_key: Option<String>,
     pub small_image_text: Option<String>,
+    pub dynamic_button: Option<PresenceButton>,
+}
+
+impl Default for PresenceData {
+    fn default() -> Self {
+        Self {
+            state: "Idle in Launcher...".to_string(),
+            details: "  ".to_string(),
+            large_image_key: "ezppfarm".to_string(),
+            large_image_text: "EZPPFarm".to_string(),
+            small_image_key: None,
+            small_image_text: None,
+            dynamic_button: None,
+        }
+    }
 }
 
 #[derive(Debug)]
@@ -26,14 +45,21 @@ enum PresenceCommand {
     Disconnect(oneshot::Sender<()>),
     UpdateData(PresenceData),
     IsConnected(oneshot::Sender<bool>),
-    Tick,
+}
+
+enum ReconnectResult {
+    Connected(DiscordIpcClient),
+    Failed,
 }
 
 struct PresenceActor {
     receiver: mpsc::Receiver<PresenceCommand>,
+    reconnect_rx: mpsc::Receiver<ReconnectResult>,
+    reconnect_tx: mpsc::Sender<ReconnectResult>,
     client: Option<DiscordIpcClient>,
     data: PresenceData,
     start_timestamp: i64,
+    reconnecting: bool,
 }
 
 impl PresenceActor {
@@ -43,175 +69,183 @@ impl PresenceActor {
             .unwrap()
             .as_secs() as i64;
 
-        let data = PresenceData {
+        let (reconnect_tx, reconnect_rx) = mpsc::channel(1);
-            state: "Idle in Launcher...".to_string(),
-            details: "  ".to_string(),
-            large_image_key: "ezppfarm".to_string(),
-            large_image_text: "EZPPFarm".to_string(),
-            small_image_key: None,
-            small_image_text: None,
-        };
 
-        PresenceActor {
+        Self {
             receiver,
+            reconnect_rx,
+            reconnect_tx,
             client: None,
-            data,
+            data: PresenceData::default(),
             start_timestamp: start,
+            reconnecting: false,
         }
     }
 
     async fn run(&mut self) {
-        let mut update_interval = interval(Duration::from_secs(5));
+        let mut heartbeat = interval(Duration::from_secs(5));
+        heartbeat.tick().await;
 
         loop {
             tokio::select! {
                 Some(cmd) = self.receiver.recv() => {
                     match cmd {
-                        PresenceCommand::Connect(responder) => self.handle_connect(responder).await,
+                        PresenceCommand::Connect(resp) => self.cmd_connect(resp).await,
-                        PresenceCommand::Disconnect(responder) => {
+                        PresenceCommand::Disconnect(resp) => self.cmd_disconnect(resp).await,
-                            self.handle_disconnect(responder).await;
+                        PresenceCommand::UpdateData(data) => {
-                        },
+                            self.data = data;
-                        PresenceCommand::UpdateData(new_data) => {
+                            self.push_presence().await;
-                            self.data = new_data;
-                        },
-                        PresenceCommand::IsConnected(responder) => {
-                            let _ = responder.send(self.client.is_some());
                         }
-                        PresenceCommand::Tick => {
+                        PresenceCommand::IsConnected(resp) => {
-                            if self.client.is_some() {
+                            let _ = resp.send(self.client.is_some());
-                                self.handle_update().await;
-                            }
                         }
                     }
                 }
-                _ = update_interval.tick() => {
+
-                    let _ = PRESENCE_TX.send(PresenceCommand::Tick).await;
+                Some(result) = self.reconnect_rx.recv() => {
+                    self.reconnecting = false;
+                    match result {
+                        ReconnectResult::Connected(client) => {
+                            println!("Presence: reconnect succeeded.");
+                            self.client = Some(client);
+                            self.push_presence().await;
+                        }
+                        ReconnectResult::Failed => {
+                            eprintln!("Presence: all reconnect attempts exhausted.");
+                        }
+                    }
+                }
+
+                _ = heartbeat.tick() => {
+                    self.push_presence().await;
                 }
             }
         }
     }
 
-    fn handle_connect(
+    async fn cmd_connect(&mut self, resp: oneshot::Sender<bool>) {
-        &mut self,
+        if self.client.is_some() {
-        responder: oneshot::Sender<bool>,
+            let _ = resp.send(true);
-    ) -> Pin<Box<dyn Future<Output = ()> + Send + '_>> {
+            return;
-        Box::pin(async move {
+        }
-            if self.client.is_some() {
-                let _ = responder.send(true);
-                return;
-            }
 
-            println!("Actor: Connecting to Discord...");
+        match try_connect_once() {
-            let mut dc_client = DiscordIpcClient::new("1032772293220384808");
+            Some(client) => {
-            match dc_client.connect() {
+                self.client = Some(client);
-                Ok(()) => {
+                self.reconnecting = false;
-                    self.client = Some(dc_client);
+                self.push_presence().await;
-                    println!("Actor: Connected successfully.");
+                let _ = resp.send(true);
-                    self.handle_update().await;
-                    let _ = responder.send(true);
-                }
-                Err(e) => {
-                    eprintln!(
-                        "Failed to connect to Discord: {:?}. Scheduling bounded retry...",
-                        e
-                    );
-                    let tx = PRESENCE_TX.clone();
-                    tokio::spawn(async move {
-                        for attempt in 1..=3 {
-                            tokio::time::sleep(Duration::from_secs(5 * attempt)).await;
-                            let (resp_tx, rx) = oneshot::channel();
-                            if tx.send(PresenceCommand::Connect(resp_tx)).await.is_ok() {
-                                if rx.await.unwrap_or(false) {
-                                    println!("Actor: Reconnection attempt {} succeeded", attempt);
-                                    break;
-                                }
-                                println!(
-                                    "Actor: Reconnection attempt {} failed, retrying...",
-                                    attempt
-                                );
-                            }
-                        }
-                    });
-
-                    if !responder.is_closed() {
-                        let _ = responder.send(false);
-                    }
-                }
             }
-        })
+            None => {
+                eprintln!("Presence: initial connect failed; spawning reconnect task.");
+                let _ = resp.send(false);
+                self.spawn_reconnect_task();
+            }
+        }
     }
 
-    async fn handle_disconnect(&mut self, responder: oneshot::Sender<()>) {
+    async fn cmd_disconnect(&mut self, resp: oneshot::Sender<()>) {
         if let Some(mut client) = self.client.take() {
-            println!("Actor: Disconnecting from Discord...");
             let _ = client.clear_activity();
             let _ = client.close();
-            println!("Actor: Disconnected successfully.");
+            println!("Presence: disconnected.");
         }
-        let _ = responder.send(());
+        let _ = resp.send(());
     }
 
-    async fn handle_update(&mut self) {
+    async fn push_presence(&mut self) {
-        if let Some(client) = self.client.as_mut() {
+        let client = match self.client.as_mut() {
-            let mut assets = Assets::new()
+            Some(c) => c,
-                .large_image(&self.data.large_image_key)
+            None => return,
-                .large_text(&self.data.large_image_text);
+        };
 
-            if let Some(key) = &self.data.small_image_key {
+        let mut assets = Assets::new()
-                assets = assets.small_image(key);
+            .large_image(&self.data.large_image_key)
-            }
+            .large_text(&self.data.large_image_text);
-            if let Some(text) = &self.data.small_image_text {
+
-                assets = assets.small_text(text);
+        if let Some(key) = &self.data.small_image_key {
+            assets = assets.small_image(key);
+        }
+        if let Some(text) = &self.data.small_image_text {
+            assets = assets.small_text(text);
+        }
+
+        let buttons = if let Some(btn) = &self.data.dynamic_button {
+            vec![
+                Button::new(&btn.label, &btn.url),
+                Button::new("Join EZPPFarm", "https://ez-pp.farm/discord"),
+            ]
+        } else {
+            vec![
+                Button::new("Download the Launcher", "https://git.ez-pp.farm/EZPPFarm/EZPPLauncher/releases/latest"),
+                Button::new("Join EZPPFarm", "https://ez-pp.farm/discord"),
+            ]
+        };
+
+        let activity = Activity::new()
+            .state(&self.data.state)
+            .details(&self.data.details)
+            .timestamps(Timestamps::new().start(self.start_timestamp))
+            .assets(assets)
+            .buttons(buttons);
+
+        if let Err(e) = client.set_activity(activity) {
+            eprintln!("Presence: set_activity failed ({:?}); will reconnect.", e);
+            self.client = None;
+            self.spawn_reconnect_task();
+        }
+    }
+
+    fn spawn_reconnect_task(&mut self) {
+        if self.reconnecting {
+            return;
+        }
+        self.reconnecting = true;
+
+        let tx = self.reconnect_tx.clone();
+        tokio::spawn(async move {
+            const MAX_ATTEMPTS: u32 = 5;
+            for attempt in 1..=MAX_ATTEMPTS {
+                let delay = Duration::from_secs(5 * attempt as u64);
+                println!(
+                    "Presence: reconnect attempt {}/{} in {:?}…",
+                    attempt, MAX_ATTEMPTS, delay
+                );
+                tokio::time::sleep(delay).await;
+
+                if let Some(client) = try_connect_once() {
+                    let _ = tx.send(ReconnectResult::Connected(client)).await;
+                    return;
+                }
             }
+            let _ = tx.send(ReconnectResult::Failed).await;
+        });
+    }
+}
 
-            let activity = Activity::new()
+fn try_connect_once() -> Option<DiscordIpcClient> {
-                .state(&self.data.state)
+    let mut client = DiscordIpcClient::new("1032772293220384808");
-                .details(&self.data.details)
+    match client.connect() {
-                .timestamps(Timestamps::new().start(self.start_timestamp))
+        Ok(()) => {
-                .assets(assets)
+            println!("Presence: IPC connected.");
-                .buttons(vec![
+            Some(client)
-                    Button::new(
+        }
-                        "Download the Launcher",
+        Err(e) => {
-                        "https://git.ez-pp.farm/EZPPFarm/EZPPLauncher/releases/latest",
+            eprintln!("Presence: IPC connect error: {:?}", e);
-                    ),
+            None
-                    Button::new("Join EZPPFarm", "https://ez-pp.farm/discord"),
-                ]);
-
-            if let Err(e) = client.set_activity(activity) {
-                eprintln!("Failed to set activity, disconnecting: {:?}", e);
-                self.client = None;
-
-                // Don't await reconnection here - send command to avoid blocking the actor
-                let tx = PRESENCE_TX.clone();
-                tokio::spawn(async move {
-                    tokio::time::sleep(Duration::from_secs(1)).await;
-                    let (resp_tx, _) = oneshot::channel();
-                    let _ = tx.send(PresenceCommand::Connect(resp_tx)).await;
-                });
-            } else {
-                println!("Actor: Presence updated successfully.");
-            }
         }
     }
 }
 
 static PRESENCE_TX: Lazy<mpsc::Sender<PresenceCommand>> = Lazy::new(|| {
-    let (tx, rx) = mpsc::channel(10);
+    let (tx, rx) = mpsc::channel(32);
     let mut actor = PresenceActor::new(rx);
     tokio::spawn(async move { actor.run().await });
     tx
 });
 
-pub static PRESENCE_DATA: Lazy<StdMutex<PresenceData>> = Lazy::new(|| {
+pub static PRESENCE_DATA: Lazy<StdMutex<PresenceData>> =
-    StdMutex::new(PresenceData {
+    Lazy::new(|| StdMutex::new(PresenceData::default()));
-        state: "Idle in Launcher...".to_string(),
-        details: "  ".to_string(),
-        large_image_key: "ezppfarm".to_string(),
-        large_image_text: "EZPPFarm".to_string(),
-        small_image_key: None,
-        small_image_text: None,
-    })
-});
 
 pub async fn connect() -> bool {
     let (tx, rx) = oneshot::channel();
@@ -223,8 +257,7 @@ pub async fn connect() -> bool {
 
 pub async fn disconnect() {
     let (tx, rx) = oneshot::channel();
-    // Use a timeout to ensure we don't hang the exit process if Discord is unresponsive
+    if PRESENCE_TX.send(PresenceCommand::Disconnect(tx)).await.is_ok() {
-    if let Ok(_) = PRESENCE_TX.send(PresenceCommand::Disconnect(tx)).await {
         let _ = tokio::time::timeout(Duration::from_secs(2), rx).await;
     }
 }
@@ -242,30 +275,65 @@ pub async fn has_presence() -> bool {
 }
 
 pub fn update_status(state: Option<&str>, details: Option<&str>, large_image_key: Option<&str>) {
-    let mut data = PRESENCE_DATA.lock().unwrap();
+    let data = {
-    if let Some(s) = state {
+        let mut guard = PRESENCE_DATA.lock().unwrap();
-        data.state = s.to_string();
+        if let Some(s) = state {
-    }
+            guard.state = s.to_string();
-    if let Some(d) = details {
+        }
-        data.details = d.to_string();
+        if let Some(d) = details {
-    }
+            guard.details = d.to_string();
-    if let Some(img) = large_image_key {
+        }
-        data.large_image_key = img.to_string();
+        if let Some(img) = large_image_key {
-    }
+            guard.large_image_key = img.to_string();
-    let data_clone = data.clone();
+        }
+        guard.clone()
+    };
+
     let tx = PRESENCE_TX.clone();
     tokio::spawn(async move {
-        let _ = tx.send(PresenceCommand::UpdateData(data_clone)).await;
+        let _ = tx.send(PresenceCommand::UpdateData(data)).await;
+    });
+}
+
+pub fn set_button(label: &str, url: &str) {
+    let data = {
+        let mut guard = PRESENCE_DATA.lock().unwrap();
+        guard.dynamic_button = Some(PresenceButton {
+            label: label.to_string(),
+            url: url.to_string(),
+        });
+        guard.clone()
+    };
+
+    let tx = PRESENCE_TX.clone();
+    tokio::spawn(async move {
+        let _ = tx.send(PresenceCommand::UpdateData(data)).await;
+    });
+}
+
+pub fn clear_button() {
+    let data = {
+        let mut guard = PRESENCE_DATA.lock().unwrap();
+        guard.dynamic_button = None;
+        guard.clone()
+    };
+
+    let tx = PRESENCE_TX.clone();
+    tokio::spawn(async move {
+        let _ = tx.send(PresenceCommand::UpdateData(data)).await;
     });
 }
 
 pub fn update_user(username: Option<&str>, id: Option<&str>) {
-    let mut data = PRESENCE_DATA.lock().unwrap();
+    let data = {
-    data.small_image_key = id.map(|id_str| format!("https://a.ez-pp.farm/{}", id_str));
+        let mut guard = PRESENCE_DATA.lock().unwrap();
-    data.small_image_text = username.map(|s| s.to_string());
+        guard.small_image_key = id.map(|s| format!("https://a.ez-pp.farm/{}", s));
-    let data_clone = data.clone();
+        guard.small_image_text = username.map(str::to_string);
+        guard.clone()
+    };
+
     let tx = PRESENCE_TX.clone();
     tokio::spawn(async move {
-        let _ = tx.send(PresenceCommand::UpdateData(data_clone)).await;
+        let _ = tx.send(PresenceCommand::UpdateData(data)).await;
     });
 }

src-tauri/tauri.conf.json

@@ -42,6 +42,15 @@
       "nsis",
       "appimage"
     ],
+    "fileAssociations": [
+      {
+        "ext": ["ezpplauncher-theme"],
+        "name": "ezppLauncher Theme",
+        "description": "ezppLauncher Theme File",
+        "role": "Viewer",
+        "mimeType": "application/x-ezpplauncher-theme"
+      }
+    ],
     "windows": {
       "webviewInstallMode": {
         "silent": true,

src/lib/dropZone.svelte.ts

@@ -0,0 +1,60 @@
+import { listen } from '@tauri-apps/api/event';
+import { onDestroy } from 'svelte';
+
+type TauriDragDropEvent = {
+  paths: string[];
+  position: { x: number; y: number };
+};
+
+export const useDropZone = ({ onDrop }: { onDrop: (paths: string[]) => void }) => {
+  let element = $state<HTMLDivElement | null>(null);
+  let dragIn = $state(false);
+  let isDraggingOverApp = $state(false);
+
+  const isOver = (x: number, y: number) => {
+    if (!element) return false;
+    const el = document.elementFromPoint(x, y);
+    return element === el || element.contains(el); // ← fix
+  };
+
+  const dropUnlisten = listen<TauriDragDropEvent>('tauri://drag-drop', (e) => {
+    const { x, y } = e.payload.position;
+    if (isOver(x, y)) {
+      onDrop(e.payload.paths);
+    }
+    dragIn = false;
+    isDraggingOverApp = false;
+  });
+
+  const overUnlisten = listen<TauriDragDropEvent>('tauri://drag-over', (e) => {
+    const { x, y } = e.payload.position;
+    isDraggingOverApp = true;
+    dragIn = isOver(x, y);
+  });
+
+  const leaveUnlisten = listen('tauri://drag-leave', () => {
+    dragIn = false;
+    isDraggingOverApp = false;
+  });
+
+  onDestroy(async () => {
+    (await dropUnlisten)();
+    (await overUnlisten)();
+    (await leaveUnlisten)();
+  });
+
+  return {
+    get ref() {
+      return element;
+    },
+    set ref(el: HTMLDivElement | null) {
+      element = el;
+    },
+    get dragIn() {
+      return dragIn;
+    },
+    get isDraggingOverApp() {
+      return isDraggingOverApp;
+    },
+  };
+};

src/lib/osuUtil.ts

@@ -17,20 +17,14 @@ export function normalizeOsuName(name: string): string {
   );
 }
 
-export const getHWID = async () => {
+export const getHWID = async (): Promise<string | undefined> =>
-  const hwid = await invoke('get_hwid');
+  await invoke<string | undefined>('get_hwid');
-  return typeof hwid === 'string' ? hwid : undefined;
-};
 
-export const isValidOsuFolder = async (folder: string): Promise<boolean> => {
+export const isValidOsuFolder = async (folder: string): Promise<boolean | undefined> =>
-  const result = await invoke('valid_osu_folder', { folder });
+  await invoke<boolean | undefined>('valid_osu_folder', { folder });
-  return typeof result === 'boolean' ? result : false;
-};
 
-export const autoDetectOsuInstallFolder = async () => {
+export const autoDetectOsuInstallFolder = async () =>
-  const result = await invoke('find_osu_installation');
+  await invoke<string | undefined>('find_osu_installation');
-  return typeof result === 'string' ? result : undefined;
-};
 
 export const setUserConfigValues = async (
   osuFolderPath: string,
@@ -50,29 +44,23 @@ export const setConfigValues = async (
     entries,
   });
 
-export const getReleaseStream = async (folder: string) => {
+export const getReleaseStream = async (folder: string): Promise<string | undefined> =>
-  const result = await invoke('get_osu_release_stream', { folder });
+  await invoke<string | undefined>('get_osu_release_stream', { folder });
-  return typeof result === 'string' ? result : undefined;
-};
 
-export const getVersion = async (folder: string) => {
+export const getVersion = async (folder: string): Promise<string | undefined> =>
-  const result = await invoke('get_osu_version', { folder });
+  await invoke<string | undefined>('get_osu_version', { folder });
-  return typeof result === 'string' ? result : undefined;
-};
 
-export const getBeatmapSetsCount = async (folder: string) => {
+export const getBeatmapSetsCount = async (folder: string): Promise<number | undefined> =>
-  const result = await invoke('get_beatmapsets_count', {
+  await invoke<number | undefined>('get_beatmapsets_count', {
     folder,
   });
-  return typeof result === 'number' ? result : 0;
-};
 
 export const getSkin = async (folder: string) => {
-  const result = await invoke('get_osu_skin', {
+  const result = await invoke<string | undefined>('get_osu_skin', {
     folder,
   });
 
-  return typeof result === 'string' ? result : 'Default';
+  return result || 'Default';
 };
 
 export const runUpdater = async (folder: string) => await invoke('run_osu_updater', { folder });
@@ -113,8 +101,8 @@ export const downloadEZPPLauncherUpdateFiles = async (
   allFiles: UpdateFile[],
   progressCallback: (file: UpdateStatus) => void
 ) => {
-  const downloadStatusListen = await listen('download-progress', (event) =>
+  const downloadStatusListen = await listen<UpdateStatus>('download-progress', (event) =>
-    progressCallback(event.payload as UpdateStatus)
+    progressCallback(event.payload)
   );
   try {
     await invoke('download_ezpp_launcher_update_files', { folder, updateFiles, allFiles });
@@ -127,20 +115,17 @@ export const replaceUIFiles = async (folder: string, revert: boolean) => {
   await invoke('replace_ui_files', { folder, revert });
 };
 
-export const isOsuRunning = async () => {
+export const isOsuRunning = async (): Promise<boolean> => await invoke<boolean>('is_osu_running');
-  const result = await invoke('is_osu_running');
-  return typeof result === 'boolean' ? result : false;
-};
 
 export const getLauncherVersion = async () => await invoke<string>('get_launcher_version');
 export const exit = async () => await invoke('exit');
-export const getPlatform = async () => await invoke<string>('get_platform');
+export const getPlatform = async (): Promise<string> => await invoke<string>('get_platform');
-export const isOsuCorrupted = async (folder: string) =>
+export const isOsuCorrupted = async (folder: string): Promise<boolean> =>
   await invoke<boolean>('check_for_corruption', { folder });
-export const hasWMCTRL = async () => await invoke<boolean>('has_wmctrl');
+export const hasWMCTRL = async (): Promise<boolean> => await invoke<boolean>('has_wmctrl');
-export const hasOsuWinello = async () => await invoke<boolean>('has_osuwinello');
+export const hasOsuWinello = async (): Promise<boolean> => await invoke<boolean>('has_osuwinello');
-export const hasNet8 = async () => await invoke<boolean>('has_net8');
+export const hasNet8 = async (): Promise<boolean> => await invoke<boolean>('has_net8');
-export const encryptString = async (str: string, entropy: string) =>
+export const encryptString = async (str: string, entropy: string): Promise<string> =>
   await invoke<string>('encrypt_string', { string: str, entropy });
 export const downloadUpdate = async (
   url: string,

src/lib/themes.ts

@@ -20,6 +20,16 @@ export type Theme = {
   updateAvailable: boolean;
 };
 
+export type ThemeInfo = {
+  name: string;
+  version: string;
+  apiVersion: string;
+  author: string;
+  entry: string;
+  style: string;
+  preview: string;
+};
+
 export const getDownloadableThemes = async () => {
   const themes: Theme[] = [];
 
@@ -82,15 +92,7 @@ export const getThemes = async (): Promise<Theme[]> => {
       const themeConfigFilePath = await path.join(folderPath, themeFolder.name, 'theme.json');
       if (await fs.exists(themeConfigFilePath)) {
         const themeConfig = await fs.readTextFile(themeConfigFilePath);
-        const theme = JSON.parse(themeConfig) as {
+        const theme = JSON.parse(themeConfig) as ThemeInfo;
-          name: string;
-          version: string;
-          apiVersion: string;
-          author: string;
-          entry: string;
-          style: string;
-          preview: string;
-        };
         const scriptFile = await path.join(folderPath, themeFolder.name, theme.entry);
         if (await fs.exists(scriptFile)) {
           themes.push({
@@ -272,15 +274,7 @@ export const downloadTheme = async (
     }
   }
   const themeInfo = await fs.readTextFile(await path.join(themeFolder, 'theme.json'));
-  const themeInfoObj = JSON.parse(themeInfo) as {
+  const themeInfoObj = JSON.parse(themeInfo) as ThemeInfo;
-    name: string;
-    version: string;
-    apiVersion: string;
-    author: string;
-    entry: string;
-    style: string;
-    preview: string;
-  };
   const themeScriptUrl = convertFileSrc(
     await path.normalize(`${themeFolder}/${themeInfoObj.entry}`)
   );
@@ -390,6 +384,129 @@ export const deleteTheme = async (themeToUninstall: Theme) => {
   return true;
 };
 
+export const checkThemeFromFile = async (filePath: string) => {
+  const normalizedFilePath = await path.normalize(filePath);
+  if (!(await fs.exists(normalizedFilePath))) {
+    return {
+      success: false,
+      error: 'File not found',
+    };
+  }
+  const fileBuffer = await fs.readFile(normalizedFilePath);
+
+  let themeInfo: ThemeInfo | undefined = undefined;
+
+  try {
+    const zipFile = await zip.loadAsync(fileBuffer);
+
+    const themeConfig = zipFile.file('theme.json');
+    if (!themeConfig) {
+      return {
+        success: false,
+        error: 'Theme config file not found',
+      };
+    }
+    const themeConfigData = await themeConfig.async('string');
+    themeInfo = JSON.parse(themeConfigData) as {
+      name: string;
+      version: string;
+      apiVersion: string;
+      author: string;
+      entry: string;
+      style: string;
+      preview: string;
+    };
+  } catch {
+    return {
+      success: false,
+      error: 'Could not read theme file',
+    };
+  }
+
+  return {
+    success: !!themeInfo,
+    themeInfo,
+  };
+};
+
+export const importThemeFromFile = async (themeName: string, filePath: string) => {
+  const baseThemeFolder = await path.join(await path.homeDir(), '.ezpplauncher', 'themes');
+  const themeFolder = await path.join(baseThemeFolder, toSafeName(themeName));
+  if (!(await fs.exists(baseThemeFolder))) await fs.mkdir(baseThemeFolder, { recursive: true });
+  if (!(await fs.exists(themeFolder))) await fs.mkdir(themeFolder, { recursive: true });
+
+  const fileBuffer = await fs.readFile(filePath);
+  const zipFile = await zip.loadAsync(fileBuffer);
+  for (const zipEntry of Object.keys(zipFile.files)) {
+    const file = zipFile.file(zipEntry);
+    if (file) {
+      try {
+        const fileData = await file.async('uint8array');
+        const filePath = await path.join(themeFolder, zipEntry);
+        const dirPath = await path.dirname(filePath);
+        if (!(await fs.exists(dirPath))) await fs.mkdir(dirPath, { recursive: true });
+        await new Promise((res) => setTimeout(res, 250));
+        await fs.writeFile(filePath, fileData);
+      } catch (err) {
+        console.log(err);
+        return {
+          success: false,
+          error: 'Failed to extract theme file.',
+        };
+      }
+    }
+  }
+  const themeInfo = await fs.readTextFile(await path.join(themeFolder, 'theme.json'));
+  const themeInfoObj = JSON.parse(themeInfo) as ThemeInfo;
+  const themeScriptUrl = convertFileSrc(
+    await path.normalize(`${themeFolder}/${themeInfoObj.entry}`)
+  );
+  const themeAssets = convertFileSrc(await path.normalize(`${themeFolder}/assets`));
+  const themePreview = convertFileSrc(
+    await path.normalize(`${themeFolder}/assets/${themeInfoObj.preview}`)
+  );
+
+  const downloadableThemes = await getDownloadableThemes();
+  custom_themes.update((themes) => {
+    const reloadedThemes = [...themes];
+    for (const theme of downloadableThemes) {
+      if (!reloadedThemes.find((t) => t.name === theme.name)) reloadedThemes.push(theme);
+
+      const installedTheme = reloadedThemes.find((t) => t.name === theme.name);
+      if (installedTheme) {
+        const installedThemeVersion = new SemVer(installedTheme.version);
+        const downloadableThemeVersion = new SemVer(theme.version);
+        if (downloadableThemeVersion.compare(installedThemeVersion) > 0) {
+          installedTheme.updateAvailable = true;
+          const index = reloadedThemes.findIndex((t) => t.name === theme.name);
+          reloadedThemes[index] = installedTheme;
+        }
+      }
+    }
+    for (const installedThemes of reloadedThemes) {
+      if (installedThemes.name === themeName) {
+        installedThemes.name = themeInfoObj.name;
+        installedThemes.author = themeInfoObj.author;
+        installedThemes.version = themeInfoObj.version;
+        installedThemes.scriptUrl = themeScriptUrl;
+        installedThemes.assets = themeAssets;
+        installedThemes.preview = themePreview;
+        installedThemes.status = 'installed';
+      }
+    }
+    return reloadedThemes.sort((a, b) => {
+      if (a.name === 'Default') return -1;
+      if (b.name === 'Default') return 1;
+      if (a.status === 'installed' && b.status !== 'installed') return -1;
+      if (a.status !== 'installed' && b.status === 'installed') return 1;
+      return a.name.localeCompare(b.name);
+    });
+  });
+  return {
+    success: true,
+  };
+};
+
 export const toSafeName = (name: string) => {
   return (
     name

src/screens/Launch.svelte

@@ -46,6 +46,7 @@
     Paintbrush,
     Trash,
     CloudDownload,
+    Import,
   } from 'lucide-svelte';
   import NumberFlow from '@number-flow/svelte';
   import * as AlertDialog from '@/components/ui/alert-dialog';
@@ -62,7 +63,7 @@
     setCurrentTimeGlobalMedia,
     urlIsValidImage,
   } from '@/utils';
-  import { fade, fly } from 'svelte/transition';
+  import { fade, fly, scale } from 'svelte/transition';
   import { Checkbox } from '@/components/ui/checkbox';
   import Label from '@/components/ui/label/label.svelte';
   import {
@@ -122,7 +123,17 @@
   import { animate } from 'animejs';
   import { sileo } from 'sileo';
   import ScrollContainer from '@/components/ui/scroll-container/ScrollContainer.svelte';
-  import { deleteTheme, downloadTheme, loadTheme } from '@/themes';
+  import {
+    checkThemeFromFile,
+    deleteTheme,
+    downloadTheme,
+    importThemeFromFile,
+    loadTheme,
+    type ThemeInfo,
+  } from '@/themes';
+  import { invoke } from '@tauri-apps/api/core';
+  import { listen } from '@tauri-apps/api/event';
+  import { useDropZone } from '@/dropZone.svelte';
 
   let selectedView = $state('home');
   let progress = $state(-1);
@@ -134,6 +145,47 @@
 
   let downloadingUpdate = $state(false);
 
+  let dragAndDrop = useDropZone({
+    onDrop: async (file) => {
+      const firstFile = file[0];
+      if (!firstFile.endsWith('.ezpplauncher-theme')) {
+        sileo.error({
+          title: 'Uhh...',
+          description: 'Dropped file is not a valid theme file.',
+          fill: '#181825',
+          styles: {
+            description: 'text-center!',
+          },
+        });
+        return;
+      }
+      const importResult = await checkThemeFromFile(firstFile);
+      if (!importResult.success || !importResult.themeInfo) {
+        sileo.error({
+          title: 'Hmmm...',
+          description: importResult.error || 'An unknown error occurred.',
+          fill: '#181825',
+          styles: {
+            description: 'text-center!',
+          },
+        });
+        return;
+      }
+      droppedTheme = {
+        filePath: firstFile,
+        themeInfo: importResult.themeInfo,
+      };
+    },
+  });
+  let droppedTheme = $state<
+    | {
+        filePath: string;
+        themeInfo: ThemeInfo;
+      }
+    | undefined
+  >(undefined);
+  let themeInstalling = $state(false);
+
   let downloadingEZPPFiles = $state(false);
   let cleanup = $state(false);
 
@@ -183,7 +235,7 @@
         },
       });
 
-      const beatmapSetCount: number | null = await getBeatmapSetsCount(selectedPath);
+      const beatmapSetCount = await getBeatmapSetsCount(selectedPath);
       if (beatmapSetCount) beatmapSets.set(beatmapSetCount);
 
       const skins_list = await getSkins(selectedPath);
@@ -720,6 +772,74 @@
     }, 450);
   };
 
+  const setupThemeImport = async () => {
+    const initialUrls = await invoke<string[]>('opened_urls');
+    if (initialUrls.length > 0) {
+      const firstFile = initialUrls[0];
+      if (!firstFile.endsWith('.ezpplauncher-theme')) {
+        sileo.error({
+          title: 'Uhh...',
+          description: 'Dropped file is not a valid theme file.',
+          fill: '#181825',
+          styles: {
+            description: 'text-center!',
+          },
+        });
+        return;
+      }
+      const importResult = await checkThemeFromFile(firstFile);
+      if (!importResult.success || !importResult.themeInfo) {
+        sileo.error({
+          title: 'Hmmm...',
+          description: importResult.error || 'An unknown error occurred.',
+          fill: '#181825',
+          styles: {
+            description: 'text-center!',
+          },
+        });
+        return;
+      }
+      droppedTheme = {
+        filePath: firstFile,
+        themeInfo: importResult.themeInfo,
+      };
+    }
+
+    await listen<string[]>('opened', async (event) => {
+      const files = event.payload;
+      if (files.length > 0) {
+        const firstFile = initialUrls[0];
+        if (!firstFile.endsWith('.ezpplauncher-theme')) {
+          sileo.error({
+            title: 'Uhh...',
+            description: 'Dropped file is not a valid theme file.',
+            fill: '#181825',
+            styles: {
+              description: 'text-center!',
+            },
+          });
+          return;
+        }
+        const importResult = await checkThemeFromFile(firstFile);
+        if (!importResult.success || !importResult.themeInfo) {
+          sileo.error({
+            title: 'Hmmm...',
+            description: importResult.error || 'An unknown error occurred.',
+            fill: '#181825',
+            styles: {
+              description: 'text-center!',
+            },
+          });
+          return;
+        }
+        droppedTheme = {
+          filePath: firstFile,
+          themeInfo: importResult.themeInfo,
+        };
+      }
+    });
+  };
+
   onMount(() => {
     const config = $userSettings;
     const trackingConsent = config.value('tracking_consent');
@@ -736,6 +856,8 @@
       ease: (t: number) => (t - 1) ** 7 + 1,
       onComplete: doBPMAnimation,
     });
+
+    setupThemeImport();
     return () => {
       window.clearInterval(animateInterval);
     };
@@ -902,7 +1024,127 @@
   </AlertDialog.Content>
 </AlertDialog.Root>
 
-<div class="grid grid-cols-[0.085fr_1fr] h-[100vh] relative">
+<AlertDialog.Root open={$newVersion === undefined && !!droppedTheme}>
+  <AlertDialog.Content
+    class="bg-theme-950 border-theme-800 p-0 max-w-2xl"
+    escapeKeydownBehavior="ignore"
+    interactOutsideBehavior="ignore"
+  >
+    <div
+      class="flex flex-col items-center justify-center border-b border-theme-800 bg-black/40 rounded-t-lg p-3"
+    >
+      <Import size={40} />
+      <span class="font-semibold text-xl">Import Theme</span>
+    </div>
+
+    <div
+      class="flex flex-col items-center text-sm text-center bg-theme-900 border border-theme-800 rounded-lg mx-3 p-3"
+    >
+      <p class="mb-4">
+        You are about to import the theme <strong>"{droppedTheme?.themeInfo.name}"</strong> by
+        <strong>{droppedTheme?.themeInfo.author}</strong>.
+      </p>
+      <div
+        class="mb-4 text-red-400 bg-red-800/20 border border-red-700/20 rounded-lg p-2 flex flex-col items-center justify-center"
+      >
+        <div class="text-base font-semibold">Warning</div>
+        <div>Themes from external sources may contain malicious code or assets.</div>
+        <div>Only import themes from creators you trust.</div>
+      </div>
+      <p>Are you sure you want to proceed with the installation?</p>
+    </div>
+    <div class="flex items-center justify-center mb-3 gap-4 mt-4">
+      <Button
+        class="min-w-28"
+        onclick={async () => {
+          if (!droppedTheme) {
+            sileo.error({
+              title: 'Hmmm...',
+              description: 'Failed to install theme.',
+              fill: '#181825',
+              styles: {
+                description: 'text-center!',
+              },
+            });
+            return;
+          }
+          themeInstalling = true;
+          try {
+            const importResult = await importThemeFromFile(
+              droppedTheme.themeInfo.name,
+              droppedTheme.filePath
+            );
+            if (!importResult.success) {
+              sileo.error({
+                title: 'Hmmm...',
+                description:
+                  importResult.error || 'An unknown error occurred while importing your theme.',
+                fill: '#181825',
+                styles: {
+                  description: 'text-center!',
+                },
+              });
+              return;
+            }
+            sileo.success({
+              title: 'Yay!',
+              description: 'Theme imported successfully',
+              fill: '#181825',
+              styles: {
+                description: 'text-center!',
+              },
+            });
+          } catch {
+            sileo.error({
+              title: 'Hmmm...',
+              description: 'An unknown error occurred while importing your theme.',
+              fill: '#181825',
+              styles: {
+                description: 'text-center!',
+              },
+            });
+          } finally {
+            droppedTheme = undefined;
+            themeInstalling = false;
+          }
+        }}
+        disabled={themeInstalling}
+      >
+        {#if themeInstalling}
+          <LoaderCircle class="animate-spin" size={18} />
+        {:else}
+          Yes, import
+        {/if}
+      </Button>
+      <Button
+        variant="outline"
+        onclick={async () => {
+          themeInstalling = false;
+          droppedTheme = undefined;
+        }}
+        disabled={themeInstalling}
+      >
+        No, don't import
+      </Button>
+    </div>
+  </AlertDialog.Content>
+</AlertDialog.Root>
+
+<div class="grid grid-cols-[0.085fr_1fr] h-[100vh] relative" bind:this={dragAndDrop.ref}>
+  {#if dragAndDrop.isDraggingOverApp}
+    <div
+      class="fixed top-0 left-0 w-full h-full z-50 flex items-center justify-center bg-black/10 backdrop-blur-sm"
+      transition:fade={{ duration: 300 }}
+    >
+      <div
+        class="w-[90vw] h-[90vh] flex flex-col items-center justify-center bg-theme-900 border border-theme-800 rounded-lg"
+        transition:scale={{ start: 0.7, duration: 300 }}
+      >
+        <Import size={64} />
+        <p>Drag and Drop a .ezpplauncher-theme file here to import</p>
+      </div>
+    </div>
+  {/if}
   <div
     class="p-3 border-r border-r-theme-900 flex flex-col items-center gap-2 z-10 bg-black/40 backdrop-blur-sm"
   >

src/screens/SetupWizard.svelte

@@ -40,6 +40,7 @@
     getVersion,
     isValidOsuFolder,
   } from '@/osuUtil';
+  import { dev } from '$app/environment';
 
   let selectedStep = $state(1);
   const steps = ['Welcome', 'Locate your osu! Installation', 'Appearance Settings'];
@@ -371,7 +372,7 @@
             else selectedStep = Math.min(selectedStep + 1, steps.length);
           }}
           disabled={selectedStep > steps.length ||
-            (selectedStep === 2 && osuInstallPath.length <= 0)}
+            (selectedStep === 2 && !dev && osuInstallPath.length <= 0)}
           >{selectedStep >= steps.length ? 'Finish' : 'Next'}</Button
         >
       </div>