feat: add functionality to retrieve installed game versions

1 files changed, 26 insertions, 4 deletions

diff --git a/ui/src/stores/game.svelte.ts b/ui/src/stores/game.svelte.ts
index 0af3daf..3128cc6 100644
--- a/ui/src/stores/game.svelte.ts
+++ b/ui/src/stores/game.svelte.ts
@@ -5,14 +5,36 @@ import { authState } from "./auth.svelte";
 
 export class GameState {
   versions = $state<Version[]>([]);
+  installedVersionIds = $state<string[]>([]);
   selectedVersion = $state("");
 
   async loadVersions() {
     try {
-      this.versions = await invoke<Version[]>("get_versions");
-      if (this.versions.length > 0) {
-        const latest = this.versions.find((v) => v.type === "release");
-        this.selectedVersion = latest ? latest.id : this.versions[0].id;
+      // Fetch both full version list and installed versions
+      const [allVersions, installedIds] = await Promise.all([
+        invoke<Version[]>("get_versions"),
+        invoke<string[]>("get_installed_versions")
+      ]);
+      
+      this.versions = allVersions;
+      this.installedVersionIds = installedIds;
+
+      if (this.installedVersionIds.length > 0) {
+        // Find the first installed version that appears in our manifest (preserving order)
+        // Usually we want the latest release that is installed
+        const installedVersions = this.versions.filter(v => this.installedVersionIds.includes(v.id));
+        
+        // Try to find latest release among installed
+        const latestInstalledRelease = installedVersions.find(v => v.type === "release");
+        
+        if (latestInstalledRelease) {
+          this.selectedVersion = latestInstalledRelease.id;
+        } else if (installedVersions.length > 0) {
+          this.selectedVersion = installedVersions[0].id;
+        } else {
+            // Fallback to just the first ID if not in manifest
+            this.selectedVersion = this.installedVersionIds[0];
+        }
       }
     } catch (e) {
       console.error("Failed to fetch versions:", e);