feat: retry connnection on server unavailable

pages/error/serverunavailable.vue

@@ -20,9 +20,15 @@
           We were unable to contact your Drop instance. See if you can open it
           in your web browser, or contact your server admin for help.
         </p>
-        <div class="mt-10">
+        <div class="mt-10 space-x-10">
+          <button
+          @click="() => retry()"
+            class="inline-flex gap-x-2 items-center text-sm text-left font-semibold leading-7 text-white"
+          >
+            Retry <ArrowPathIcon class="w-5 h-5" />
+          </button>
           <NuxtLink
-          to="/setup"
+            to="/setup"
             class="text-sm text-left font-semibold leading-7 text-blue-600"
           >
             Connect to different instance <span aria-hidden="true">&rarr;</span>
@@ -68,7 +74,15 @@
 </template>
 
 <script setup lang="ts">
+import { ArrowPathIcon } from "@heroicons/vue/24/outline";
+import { invoke } from "@tauri-apps/api/core";
+
 definePageMeta({
   layout: "mini",
 });
+
+async function retry() {
+  await invoke("retry_connect");
+  location.reload();
+}
 </script>

src-tauri/src/auth.rs

@@ -1,7 +1,5 @@
 use std::{
-    env,
-    sync::Mutex,
-    time::{SystemTime, UNIX_EPOCH},
+    borrow::BorrowMut, env, sync::Mutex, time::{SystemTime, UNIX_EPOCH}
 };
 
 use log::{info, warn};
@@ -11,7 +9,7 @@ use tauri::{AppHandle, Emitter, Manager};
 use url::Url;
 
 use crate::{
-    db::{DatabaseAuth, DatabaseImpls},
+    db::{self, DatabaseAuth, DatabaseImpls},
     remote::RemoteAccessError,
     AppState, AppStatus, User, DB,
 };
@@ -185,6 +183,18 @@ pub async fn auth_initiate<'a>() -> Result<(), String> {
     Ok(())
 }
 
+#[tauri::command]
+pub fn retry_connect(state: tauri::State<'_, Mutex<AppState>>) -> Result<(), ()> {
+    let (app_status, user) = setup()?;
+
+    let mut guard = state.lock().unwrap();
+    guard.status = app_status;
+    guard.user = user;
+    drop(guard);
+
+    Ok(())
+}
+
 pub fn setup() -> Result<(AppStatus, Option<User>), ()> {
     let data = DB.borrow_data().unwrap();
 

src-tauri/src/lib.rs

@@ -9,7 +9,7 @@ mod settings;
 mod tests;
 
 use crate::db::DatabaseImpls;
-use auth::{auth_initiate, generate_authorization_header, recieve_handshake};
+use auth::{auth_initiate, generate_authorization_header, recieve_handshake, retry_connect};
 use db::{add_download_dir, delete_download_dir, fetch_download_dir_stats, DatabaseInterface, DATA_ROOT_DIR};
 use downloads::download_commands::*;
 use downloads::download_manager::DownloadManagerBuilder;
@@ -120,6 +120,7 @@ pub fn run() {
             fetch_state,
             // Auth
             auth_initiate,
+            retry_connect,
             // Remote
             use_remote,
             gen_drop_url,