From b7ad8e459cae11ca74d976f6bd2e02559912716a Mon Sep 17 00:00:00 2001
From: Brendan Allan <brendonovich@outlook.com>
Date: Fri, 6 Feb 2026 23:03:07 +0800
Subject: desktop: add loading window and restructure rust (#12176)

---
 packages/desktop/src/bindings.ts | 32 +++++++++++++++--
 packages/desktop/src/entry.tsx   |  5 +++
 packages/desktop/src/index.tsx   |  6 ++--
 packages/desktop/src/loading.tsx | 77 ++++++++++++++++++++++++++++++++++++++++
 packages/desktop/src/styles.css  | 10 ++++++
 5 files changed, 125 insertions(+), 5 deletions(-)
 create mode 100644 packages/desktop/src/entry.tsx
 create mode 100644 packages/desktop/src/loading.tsx

(limited to 'packages/desktop/src')

diff --git a/packages/desktop/src/bindings.ts b/packages/desktop/src/bindings.ts
index 64d0c113d..46dcb7f44 100644
--- a/packages/desktop/src/bindings.ts
+++ b/packages/desktop/src/bindings.ts
@@ -1,20 +1,48 @@
 // This file has been generated by Tauri Specta. Do not edit this file manually.
 
-import { invoke as __TAURI_INVOKE } from "@tauri-apps/api/core"
+import { invoke as __TAURI_INVOKE, Channel } from '@tauri-apps/api/core';
+import * as __TAURI_EVENT from "@tauri-apps/api/event";
 
 /** Commands */
 export const commands = {
 	killSidecar: () => __TAURI_INVOKE<void>("kill_sidecar"),
 	installCli: () => __TAURI_INVOKE<string>("install_cli"),
-	ensureServerReady: () => __TAURI_INVOKE<ServerReadyData>("ensure_server_ready"),
+	awaitInitialization: (events: Channel) => __TAURI_INVOKE<ServerReadyData>("await_initialization", { events }),
+
 	getDefaultServerUrl: () => __TAURI_INVOKE<string | null>("get_default_server_url"),
 	setDefaultServerUrl: (url: string | null) => __TAURI_INVOKE<null>("set_default_server_url", { url }),
 	parseMarkdownCommand: (markdown: string) => __TAURI_INVOKE<string>("parse_markdown_command", { markdown }),
 };
 
+/** Events */
+export const events = {
+	loadingWindowComplete: makeEvent<LoadingWindowComplete>("loading-window-complete"),
+};
+
 /* Types */
+export type InitStep = { phase: "server_waiting" } | { phase: "sqlite_waiting" } | { phase: "done" };
+
+export type LoadingWindowComplete = null;
+
 export type ServerReadyData = {
 		url: string,
 		password: string | null,
 	};
 
+/* Tauri Specta runtime */
+function makeEvent<T>(name: string) {
+    const base = {
+        listen: (cb: __TAURI_EVENT.EventCallback<T>) => __TAURI_EVENT.listen(name, cb),
+        once: (cb: __TAURI_EVENT.EventCallback<T>) => __TAURI_EVENT.once(name, cb),
+        emit: (payload: T) => __TAURI_EVENT.emit(name, payload) as unknown as (T extends null ? () => Promise<void> : (payload: T) => Promise<void>)
+    };
+
+    const fn = (target: import("@tauri-apps/api/webview").Webview | import("@tauri-apps/api/window").Window) => ({
+        listen: (cb: __TAURI_EVENT.EventCallback<T>) => target.listen(name, cb),
+        once: (cb: __TAURI_EVENT.EventCallback<T>) => target.once(name, cb),
+        emit: (payload: T) => target.emit(name, payload) as unknown as (T extends null ? () => Promise<void> : (payload: T) => Promise<void>)
+    });
+
+    return Object.assign(fn, base);
+}
+
diff --git a/packages/desktop/src/entry.tsx b/packages/desktop/src/entry.tsx
new file mode 100644
index 000000000..b1c9f13f9
--- /dev/null
+++ b/packages/desktop/src/entry.tsx
@@ -0,0 +1,5 @@
+if (location.pathname === "/loading") {
+  import("./loading")
+} else {
+  import("./")
+}
diff --git a/packages/desktop/src/index.tsx b/packages/desktop/src/index.tsx
index 66e86bf52..2b74bbabd 100644
--- a/packages/desktop/src/index.tsx
+++ b/packages/desktop/src/index.tsx
@@ -21,7 +21,8 @@ import { UPDATER_ENABLED } from "./updater"
 import { initI18n, t } from "./i18n"
 import pkg from "../package.json"
 import "./styles.css"
-import { commands } from "./bindings"
+import { commands, InitStep } from "./bindings"
+import { Channel } from "@tauri-apps/api/core"
 import { createMenu } from "./menu"
 
 const root = document.getElementById("root")
@@ -307,7 +308,6 @@ const createPlatform = (password: Accessor<string | null>): Platform => ({
       .catch(() => undefined)
   },
 
-  // @ts-expect-error
   fetch: (input, init) => {
     const pw = password()
 
@@ -400,7 +400,7 @@ type ServerReadyData = { url: string; password: string | null }
 
 // Gate component that waits for the server to be ready
 function ServerGate(props: { children: (data: Accessor<ServerReadyData>) => JSX.Element }) {
-  const [serverData] = createResource(() => commands.ensureServerReady())
+  const [serverData] = createResource(() => commands.awaitInitialization(new Channel<InitStep>() as any))
 
   const errorMessage = () => {
     const error = serverData.error
diff --git a/packages/desktop/src/loading.tsx b/packages/desktop/src/loading.tsx
new file mode 100644
index 000000000..752cde893
--- /dev/null
+++ b/packages/desktop/src/loading.tsx
@@ -0,0 +1,77 @@
+import { render } from "solid-js/web"
+import { MetaProvider } from "@solidjs/meta"
+import "@opencode-ai/app/index.css"
+import { Font } from "@opencode-ai/ui/font"
+import { Splash } from "@opencode-ai/ui/logo"
+import "./styles.css"
+import { createSignal, Match, onMount } from "solid-js"
+import { commands, events, InitStep } from "./bindings"
+import { Channel } from "@tauri-apps/api/core"
+import { Switch } from "solid-js"
+
+const root = document.getElementById("root")!
+
+render(() => {
+  let splash!: SVGSVGElement
+  const [state, setState] = createSignal<InitStep | null>(null)
+
+  const channel = new Channel<InitStep>()
+  channel.onmessage = (e) => setState(e)
+  commands.awaitInitialization(channel as any).then(() => {
+    const currentOpacity = getComputedStyle(splash).opacity
+
+    splash.style.animation = "none"
+    splash.style.animationPlayState = "paused"
+    splash.style.opacity = currentOpacity
+
+    requestAnimationFrame(() => {
+      splash.style.transition = "opacity 0.3s ease"
+      requestAnimationFrame(() => {
+        splash.style.opacity = "1"
+      })
+    })
+  })
+
+  return (
+    <MetaProvider>
+      <div class="w-screen h-screen bg-background-base flex items-center justify-center">
+        <Font />
+        <div class="flex flex-col items-center gap-10">
+          <Splash ref={splash} class="h-25 animate-[pulse-splash_2s_ease-in-out_infinite]" />
+          <span class="text-text-base">
+            <Switch fallback="Just a moment...">
+              <Match when={state()?.phase === "done"}>
+                {(_) => {
+                  onMount(() => {
+                    setTimeout(() => events.loadingWindowComplete.emit(null), 1000)
+                  })
+
+                  return "All done"
+                }}
+              </Match>
+              <Match when={state()?.phase === "sqlite_waiting"}>
+                {(_) => {
+                  const textItems = [
+                    "Just a moment...",
+                    "Migrating your database",
+                    "This could take a couple of minutes",
+                  ]
+                  const [textIndex, setTextIndex] = createSignal(0)
+
+                  onMount(async () => {
+                    await new Promise((res) => setTimeout(res, 3000))
+                    setTextIndex(1)
+                    await new Promise((res) => setTimeout(res, 6000))
+                    setTextIndex(2)
+                  })
+
+                  return <>{textItems[textIndex()]}</>
+                }}
+              </Match>
+            </Switch>
+          </span>
+        </div>
+      </div>
+    </MetaProvider>
+  )
+}, root)
diff --git a/packages/desktop/src/styles.css b/packages/desktop/src/styles.css
index 143a21312..941fb95d7 100644
--- a/packages/desktop/src/styles.css
+++ b/packages/desktop/src/styles.css
@@ -5,3 +5,13 @@ button#decorum-tb-close,
 div[data-tauri-decorum-tb] {
   height: calc(var(--spacing) * 10) !important;
 }
+
+@keyframes pulse-splash {
+  0%,
+  100% {
+    opacity: 0.1;
+  }
+  50% {
+    opacity: 0.3;
+  }
+}
-- 
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