fix(mongodb): support legacy indexes and driver mode

apps/desktop/src/components/connection/ConnectionDialog.vue

@@ -392,6 +392,7 @@ const driverProfiles: Record<
   duckdb: { type: "duckdb", port: 0, user: "", label: "DuckDB", icon: "duckdb" },
   access: { type: "access", port: 0, user: "", label: "Microsoft Access", icon: "access" },
   mongodb: { type: "mongodb", port: 27017, user: "", label: "MongoDB", icon: "mongodb" },
+  "mongodb-legacy": { type: "mongodb", port: 27017, user: "", label: "MongoDB (Legacy)", icon: "mongodb" },
   clickhouse: {
     type: "clickhouse",
     port: 8123,

apps/desktop/src/stores/connectionStore.ts

@@ -56,6 +56,8 @@ import { completionSchemasFromTree, completionTablesFromTree } from "@/lib/compl
 const PINNED_TREE_NODES_STORAGE_KEY = "dbx-pinned-tree-nodes";
 const ACTIVE_CONNECTION_STORAGE_KEY = "dbx-active-connection";
 const CONNECTION_HEALTH_CHECK_TTL_MS = 2000;
+const MONGO_LEGACY_DRIVER_PROFILE = "mongodb-legacy";
+const MONGO_LEGACY_DRIVER_LABEL = "MongoDB (Legacy)";
 function sidebarObjectGroupPageSize(): number {
   const settingsStore = useSettingsStore();
   const size = settingsStore.desktopSettings.sidebar_table_page_size;
@@ -336,6 +338,7 @@ export const useConnectionStore = defineStore("connection", () => {
       sqlserver: "SQL Server",
       mongodb: "MongoDB",
       oracle: "Oracle",
+      "mongodb-legacy": MONGO_LEGACY_DRIVER_LABEL,
       elasticsearch: "Elasticsearch",
       qdrant: "Qdrant",
       milvus: "Milvus",
@@ -790,6 +793,26 @@ export const useConnectionStore = defineStore("connection", () => {
     }
   }
 
+  async function syncMongoLegacyDriverFallback(connectionId: string, previousConfig: ConnectionConfig) {
+    if (!isDesktop || previousConfig.db_type !== "mongodb" || previousConfig.driver_profile === MONGO_LEGACY_DRIVER_PROFILE) {
+      return;
+    }
+
+    const savedConnections = await api.loadConnections().catch(() => null);
+    const savedConfig = savedConnections?.map((connection) => normalizeConnection(connection)).find((connection) => connection.id === connectionId && connection.driver_profile === MONGO_LEGACY_DRIVER_PROFILE);
+    if (!savedConfig) return;
+
+    const idx = connections.value.findIndex((connection) => connection.id === connectionId);
+    if (idx < 0) return;
+    const nextConnections = [...connections.value];
+    nextConnections[idx] = {
+      ...savedConfig,
+      driver_label: savedConfig.driver_label || MONGO_LEGACY_DRIVER_LABEL,
+    };
+    connections.value = nextConnections;
+    rebuildTreeNodes();
+  }
+
   async function setDefaultDatabase(connectionId: string, database: string) {
     const config = getConfig(connectionId);
     if (!config || config.database === database) return;
@@ -868,6 +891,7 @@ export const useConnectionStore = defineStore("connection", () => {
     try {
       await beforeConnectHandler?.(config);
       const id = await withConnectionAttemptTimeout(api.connectDb(config), config);
+      await syncMongoLegacyDriverFallback(id, config);
       activeConnectionId.value = id;
       connectedIds.value.add(id);
       markConnectionHealthChecked(id);
@@ -984,6 +1008,7 @@ export const useConnectionStore = defineStore("connection", () => {
     try {
       await beforeConnectHandler?.(config);
       await withConnectionAttemptTimeout(api.connectDb(config), config);
+      await syncMongoLegacyDriverFallback(connectionId, config);
       connectedIds.value.add(connectionId);
       markConnectionHealthChecked(connectionId);
       activeConnectionId.value = connectionId;