From 87ff8fd4d9ead772a26b8fa14d54eeef6592f8ae Mon Sep 17 00:00:00 2001
From: "Calum H." <calum@modrinth.com>
Date: Mon, 29 Jun 2026 15:39:03 +0100
Subject: [PATCH] fix: server panel not using correct endpoint for mrpack
 reupload (#6539)

fix: server panel not using correct endpoint for local modpack reupload
---
 .../server-settings/pages/installation.vue    | 43 ++++++++++++++-----
 packages/ui/src/providers/file-picker.ts      |  2 +-
 2 files changed, 33 insertions(+), 12 deletions(-)

diff --git a/packages/ui/src/layouts/shared/server-settings/pages/installation.vue b/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
index 15035cd77a..6a3609984b 100644
--- a/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
+++ b/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
@@ -390,6 +390,22 @@ function toApiLoader(loader: string): Archon.Content.v1.Modloader {
 	return loader as Archon.Content.v1.Modloader
 }
 
+async function uploadLocalModpackWithSoftOverride() {
+	const picked = await filePicker.pickModpackFile()
+	if (!picked?.file) return false
+
+	const handle = client.kyros.content_v1.uploadModpackFile(
+		worldId.value!,
+		picked.file,
+		{ known: {} },
+		{ softOverride: true },
+	)
+	await uploadProgressModal.value!.track(handle)
+	emit('reinstall')
+	await invalidateServerState()
+	return true
+}
+
 provideInstallationSettings({
 	closeSettings: serverSettings.closeModal,
 	onGameVersionHover: handleGameVersionHover,
@@ -612,18 +628,8 @@ provideInstallationSettings({
 		if (!modpack.value) return
 		if (modpack.value.spec.platform === 'local_file') {
 			debug('reinstallModpack: local file, opening file picker')
-			const picked = await filePicker.pickModpackFile()
-			if (!picked?.file) return
 			try {
-				const handle = client.kyros.content_v1.uploadModpackFile(
-					worldId.value!,
-					picked.file,
-					{ known: {} },
-					{ softOverride: true },
-				)
-				await uploadProgressModal.value!.track(handle)
-				emit('reinstall')
-				invalidateServerState()
+				await uploadLocalModpackWithSoftOverride()
 			} catch (err) {
 				emit('reinstall-failed')
 				addNotification({
@@ -664,6 +670,21 @@ provideInstallationSettings({
 		}
 	},
 
+	async swapModpack() {
+		if (setupActionDisabled.value) return
+		if (modpack.value?.spec.platform !== 'local_file') return
+		debug('swapModpack: local file, opening file picker')
+		try {
+			await uploadLocalModpackWithSoftOverride()
+		} catch (err) {
+			emit('reinstall-failed')
+			addNotification({
+				type: 'error',
+				text: err instanceof Error ? err.message : formatMessage(messages.failedToChangeVersion),
+			})
+		}
+	},
+
 	async unlinkModpack() {
 		if (setupActionDisabled.value) return
 		debug('unlinkModpack: called')
diff --git a/packages/ui/src/providers/file-picker.ts b/packages/ui/src/providers/file-picker.ts
index 87b4bc2d79..3c9842e9fd 100644
--- a/packages/ui/src/providers/file-picker.ts
+++ b/packages/ui/src/providers/file-picker.ts
@@ -10,7 +10,7 @@ export interface PickedFile {
 }
 
 export interface PickedModpackFile extends Omit<PickedFile, 'file'> {
-	/** Only present for upload flows; native imports avoid copying huge packs into the webview heap. */
+	/** Only present for upload flows; native imports avoid copying huge packs into the browser heap. */
 	file?: File
 }