feat: harden plugin api for separate repos, signed updates and generic external login

src/backend/upgrade/sso-settings-migration.ts

@@ -0,0 +1,59 @@
+/**
+ * Moves the silent sign-in default out of core settings and into the sso
+ * plugin's admin settings. Core used to own the toggle and read it on the
+ * login page; the sso plugin now marks its own login instance to start on
+ * its own.
+ *
+ * Idempotent: a value already in plugin settings wins and the core copy is
+ * dropped.
+ */
+
+import { databaseLogger } from "../utils/logger.js";
+import {
+  createCurrentPluginRepository,
+  createCurrentPluginSettingsRepository,
+  createCurrentSettingsRepository,
+} from "../database/repositories/factory.js";
+
+const PLUGIN_ID = "sso";
+const LEGACY_KEY = "oidc_silent_login_default";
+const FIELD = "silentLoginDefault";
+
+export interface SsoSettingsMigrationResult {
+  moved: boolean;
+}
+
+export async function runSsoSettingsMigration(): Promise<SsoSettingsMigrationResult> {
+  try {
+    const plugin = await createCurrentPluginRepository().findById(PLUGIN_ID);
+    if (!plugin) return { moved: false };
+
+    const settings = createCurrentSettingsRepository();
+    const legacy = await settings.get(LEGACY_KEY);
+    if (legacy === null || legacy === "") return { moved: false };
+
+    const pluginSettings = createCurrentPluginSettingsRepository();
+    const existing = await pluginSettings.get(PLUGIN_ID, "admin", null, FIELD);
+    if (!existing || existing.value === null) {
+      await pluginSettings.set(
+        PLUGIN_ID,
+        "admin",
+        null,
+        FIELD,
+        JSON.stringify(legacy === "true"),
+        false,
+      );
+    }
+    await settings.delete(LEGACY_KEY);
+    databaseLogger.info("Moved the silent sign-in default into sso settings", {
+      operation: "sso_settings_migration",
+    });
+    return { moved: true };
+  } catch (error) {
+    databaseLogger.warn("SSO settings migration failed", {
+      operation: "sso_settings_migration",
+      error: error instanceof Error ? error.message : String(error),
+    });
+    return { moved: false };
+  }
+}