feat(app): auto-update linked modpacks before launch and in background

apps/app-frontend/src/components/ui/instance_settings/GeneralSettings.vue

@@ -9,6 +9,7 @@ import {
 	injectNotificationManager,
 	OverflowMenu,
 	StyledInput,
+	Toggle,
 	useVIntl,
 } from '@modrinth/ui'
 import { useQueryClient } from '@tanstack/vue-query'
@@ -44,6 +45,21 @@ const releaseChannelDisabledItems = computed<ReleaseChannel[]>(() =>
 	savingReleaseChannel.value ? [...releaseChannelOptions] : [],
 )
 
+const autoUpdateModpack = ref(instance.value.auto_update_modpack ?? false)
+
+const hasLinkedModpack = computed(() => !!instance.value.linked_data)
+
+watch(autoUpdateModpack, async (value) => {
+	await edit(instance.value.path, { auto_update_modpack: value }).catch(handleError)
+})
+
+watch(
+	() => instance.value.auto_update_modpack,
+	(val) => {
+		autoUpdateModpack.value = val ?? false
+	},
+)
+
 const newCategoryInput = ref('')
 
 const installing = computed(() => instance.value.install_stage !== 'installed')
@@ -263,6 +279,15 @@ const messages = defineMessages({
 		id: 'instance.settings.tabs.general.update-channel.select',
 		defaultMessage: 'Select update channel',
 	},
+	autoUpdateModpack: {
+		id: 'instance.settings.tabs.general.auto-update-modpack',
+		defaultMessage: 'Auto-update modpack',
+	},
+	autoUpdateModpackDescription: {
+		id: 'instance.settings.tabs.general.auto-update-modpack.description',
+		defaultMessage:
+			'Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background.',
+	},
 	deleteInstance: {
 		id: 'instance.settings.tabs.general.delete',
 		defaultMessage: 'Delete instance',
@@ -409,6 +434,18 @@ const messages = defineMessages({
 			</p>
 		</div>
 
+		<div v-if="hasLinkedModpack" class="flex items-center justify-between gap-4 mt-6">
+			<div>
+				<h2 class="m-0 text-lg font-semibold text-contrast">
+					{{ formatMessage(messages.autoUpdateModpack) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm">
+					{{ formatMessage(messages.autoUpdateModpackDescription) }}
+				</p>
+			</div>
+			<Toggle id="auto-update-modpack" v-model="autoUpdateModpack" />
+		</div>
+
 		<div class="flex flex-col gap-2.5 mt-6">
 			<h2 id="delete-instance-label" class="m-0 text-lg font-semibold text-contrast block">
 				{{ formatMessage(messages.deleteInstance) }}

apps/app-frontend/src/helpers/profile.ts

@@ -242,6 +242,11 @@ export async function update_managed_modrinth_version(
 	})
 }
 
+// Auto-update all modpacks with auto_update_modpack enabled
+export async function auto_update_all_modpacks(): Promise<void> {
+	return await invoke('plugin:profile|profile_auto_update_all_modpacks')
+}
+
 // Repair a managed Modrinth profile
 export async function update_repair_modrinth(path: string): Promise<void> {
 	return await invoke('plugin:profile|profile_repair_managed_modrinth', { path })

apps/app-frontend/src/helpers/types.d.ts

@@ -31,6 +31,7 @@ export type GameInstance = {
 	force_fullscreen?: boolean
 	game_resolution?: [number, number]
 	hooks: Hooks
+	auto_update_modpack?: boolean
 }
 
 type InstallStage =

apps/app-frontend/src/locales/en-US/index.json

@@ -665,6 +665,12 @@
   "instance.settings.tabs.general": {
     "message": "General"
   },
+  "instance.settings.tabs.general.auto-update-modpack": {
+    "message": "Auto-update modpack"
+  },
+  "instance.settings.tabs.general.auto-update-modpack.description": {
+    "message": "Automatically update this modpack to the latest version. Updates are checked before launching and periodically in the background."
+  },
   "instance.settings.tabs.general.delete": {
     "message": "Delete instance"
   },

apps/app/build.rs

@@ -196,6 +196,7 @@ fn main() {
                         "profile_edit_icon",
                         "profile_export_mrpack",
                         "profile_get_pack_export_candidates",
+                        "profile_auto_update_all_modpacks",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,

apps/app/src/api/profile.rs

@@ -43,6 +43,7 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
             profile_edit_icon,
             profile_export_mrpack,
             profile_get_pack_export_candidates,
+            profile_auto_update_all_modpacks,
         ])
         .build()
 }
@@ -432,6 +433,20 @@ pub struct EditProfile {
     )]
     pub game_resolution: Option<Option<WindowSize>>,
     pub hooks: Option<Hooks>,
+
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
+    pub auto_update_modpack: Option<Option<bool>>,
+}
+
+// Auto-update all modpacks with auto_update_modpack enabled
+// invoke('plugin:profile|profile_auto_update_all_modpacks')
+#[tauri::command]
+pub async fn profile_auto_update_all_modpacks() -> Result<()> {
+    Ok(profile::auto_update_all_modpacks().await?)
 }
 
 // Edits a profile
@@ -480,6 +495,9 @@ pub async fn profile_edit(path: &str, edit_profile: EditProfile) -> Result<()> {
         if let Some(hooks) = edit_profile.hooks.clone() {
             prof.hooks = hooks;
         }
+        if let Some(auto_update_modpack) = edit_profile.auto_update_modpack {
+            prof.auto_update_modpack = auto_update_modpack;
+        }
 
         prof.modified = chrono::Utc::now();
 

apps/app/src/main.rs

@@ -226,6 +226,19 @@ fn main() {
                 tracing::warn!("Failed to set window shadow: {e}");
             }
 
+            // Background task: auto-update modpacks every 60 minutes
+            tauri::async_runtime::spawn(async move {
+                // Wait for state to initialize before first check
+                tokio::time::sleep(std::time::Duration::from_secs(30)).await;
+                loop {
+                    tracing::debug!("Running background modpack auto-update check");
+                    if let Err(e) = theseus::profile::auto_update_all_modpacks().await {
+                        tracing::warn!("Background modpack auto-update failed: {e}");
+                    }
+                    tokio::time::sleep(std::time::Duration::from_secs(3600)).await;
+                }
+            });
+
             Ok(())
         });
 

apps/frontend/AGENTS.md

@@ -1 +1 @@
-CLAUDE.md
+CLAUDE.md

packages/api-client/AGENTS.md

@@ -1 +1 @@
-CLAUDE.md
+CLAUDE.md

packages/app-lib/migrations/20260618000000_add-auto-update-modpack.sql

@@ -0,0 +1 @@
+ALTER TABLE profiles ADD COLUMN auto_update_modpack INTEGER NULL;

packages/app-lib/src/api/profile/create.rs

@@ -102,6 +102,7 @@ pub async fn profile_create(
             wrapper: None,
             post_exit: None,
         },
+        auto_update_modpack: None,
     };
 
     let result = async {