diff --git a/src-tauri/src/device/device.rs b/src-tauri/src/device/device.rs
index 5123596..24051a8 100644
--- a/src-tauri/src/device/device.rs
+++ b/src-tauri/src/device/device.rs
@@ -88,3 +88,24 @@ pub fn get_device_types(device: &Device) -> Vec<DeviceType> {
 
     out
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_service_types_for_magene_speedcadence() {
+        let magene = Device {
+            id: "hci0/dev_F1_F2_7C_77_14_BE".into(),
+            address: "F1:F2:7C:77:14:BE".into(),
+            display_name: Some("10911-17".into()),
+            rssi: Some(-42),
+            service_uuids: vec!["00001816-0000-1000-8000-00805f9b34fb".into()],
+            characteristics: vec![],
+            manufacturer_data: Some("6b009f2a110300030072".into()),
+            metadata: None,
+        };
+
+        assert_eq!(get_device_types(&magene), [DeviceType::CadSensor]);
+    }
+}
diff --git a/src-tauri/src/device_repo/repo.rs b/src-tauri/src/device_repo/repo.rs
index 7393113..9a1cbce 100644
--- a/src-tauri/src/device_repo/repo.rs
+++ b/src-tauri/src/device_repo/repo.rs
@@ -55,5 +55,50 @@ pub fn repo_from_devices(devices: Vec<Device>) -> Repo {
         }
     }
 
+    fn sort_by_rssi_desc(v: &mut [Device]) {
+        v.sort_by(|a, b| {
+            let ra = a.rssi;
+            let rb = b.rssi;
+            match (ra, rb) {
+                (Some(va), Some(vb)) => vb.cmp(&va),
+                (Some(_), None) => std::cmp::Ordering::Less,
+                (None, Some(_)) => std::cmp::Ordering::Greater,
+                (None, None) => std::cmp::Ordering::Equal,
+            }
+        });
+    }
+
+    sort_by_rssi_desc(&mut repo.hr_sensors);
+    sort_by_rssi_desc(&mut repo.cad_sensors);
+    sort_by_rssi_desc(&mut repo.trainers);
+
     repo
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_service_types_for_magene_speedcadence() {
+        let magene = Device {
+            id: "hci0/dev_F1_F2_7C_77_14_BE".into(),
+            address: "F1:F2:7C:77:14:BE".into(),
+            display_name: Some("10911-17".into()),
+            rssi: Some(-42),
+            service_uuids: vec!["00001816-0000-1000-8000-00805f9b34fb".into()],
+            characteristics: vec![],
+            manufacturer_data: Some("6b009f2a110300030072".into()),
+            metadata: None,
+        };
+
+        let devices = vec![magene];
+        let x = repo_from_devices(devices);
+
+        println!("{:?}", x);
+
+        //assert_eq!(repo_from_devices(devices), Repo::new());
+
+        assert_eq!(2, 3);
+    }
+}
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 63e8f9e..50ea820 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -2,6 +2,8 @@ mod device;
 mod ble;
 mod device_repo;
 
+use tauri::{AppHandle, Manager};
+
 use crate::{ble::scan_devices, device_repo::{repo_from_devices, try_from_file, Repo}};
 
 // Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
@@ -15,14 +17,28 @@ async fn read_repo() -> Repo {
 
 #[tauri::command]
 async fn scan() -> Repo {
+    println!("kek");
     repo_from_devices((scan_devices(5).await).unwrap_or_default())
 }
 
+#[tauri::command]
+async fn init(app: AppHandle) -> Result<(),()> {
+    println!("init rideinn app");
+    let splash = app.get_webview_window("splashscreen").unwrap();
+    let connect = app.get_webview_window("connect").unwrap();
+    let repo = repo_from_devices((scan_devices(5).await).unwrap_or_default());
+
+    splash.close().unwrap();
+    connect.show().unwrap();
+
+    Ok(())
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
-        .plugin(tauri_plugin_opener::init())
-        .invoke_handler(tauri::generate_handler![read_repo, scan])
+
+        .invoke_handler(tauri::generate_handler![init, read_repo, scan])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index eacd8af..c702206 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -10,9 +10,17 @@
     "withGlobalTauri": true,
     "windows": [
       {
-        "title": "rideinn",
-        "width": 800,
-        "height": 600
+        "title": "main",
+        "visible": false
+      },
+      {
+        "label": "splashscreen",
+        "url": "splashscreen"
+      },
+      {
+        "label": "connect",
+        "url": "connect",
+        "visible": false
       }
     ],
     "security": {
diff --git a/src/main.js b/src/main.js
index c08b5e0..8b231f2 100644
--- a/src/main.js
+++ b/src/main.js
@@ -16,9 +16,14 @@ const isArray = (maybeArray) =>
 const isEmptyArray = (maybeArray) =>
   isArray(maybeArray) && maybeArray.length === 0;
 
-const getClosestDevices = () => {
-  console.warn("getClosestDevices NOT IMPLEMENTED YET");
-  return [];
+const getClosestDevices = (repo) => {
+  const sortByRssi = (d1, d2) => d1.rssi > d2.rssi;
+
+  const cadSensors = repo.cad_sensors.sort(sortByRssi);
+  const hrSensors = repo.hr_sensors.sort(sortByRssi);
+  const trainers = repo.trainers.sort(sortByRssi);
+
+  return [hrSensors[0], cadSensors[0], trainers[0]];
 };
 
 const isRepoEmpty = (repo) =>
@@ -27,12 +32,13 @@ const isRepoEmpty = (repo) =>
   (!repo.trainers || isEmptyArray(repo.trainers));
 
 window.addEventListener("DOMContentLoaded", async () => {
+  console.log("hello from main js");
   const [savedDevices, scannedDevices] = await Promise.all([
     readRepo(),
     scan(),
   ]);
 
-  console.log(savedDevices);
+  console.log(savedDevices, scannedDevices);
 
   if (isRepoEmpty(savedDevices)) {
     const closest = getClosestDevices(scannedDevices);