fix rpc no-route errors, fix fileopen in preview (#313)

frontend/app/store/wshrpc.ts

@@ -103,6 +103,14 @@ function handleIncomingRpcMessage(msg: RpcMessage, eventHandlerFn: (event: WaveE
             }
             return;
         }
+        if (msg.command == "message") {
+            if (msg.data?.oref != null) {
+                console.log("rpc:message", msg.data?.oref, msg.data?.message);
+            } else {
+                console.log("rpc:message", msg.data?.message);
+            }
+            return;
+        }
 
         console.log("rpc command not supported", msg);
         return;

frontend/app/store/wshserver.ts

@@ -107,6 +107,11 @@ class WshServerType {
         return WOS.wshServerRpcHelper_call("remotefileinfo", data, opts);
     }
 
+    // command "remotefilejoin" [call]
+    RemoteFileJoinCommand(data: string[], opts?: RpcOpts): Promise<FileInfo> {
+        return WOS.wshServerRpcHelper_call("remotefilejoin", data, opts);
+    }
+
     // command "remotestreamcpudata" [responsestream]
 	RemoteStreamCpuDataCommand(opts?: RpcOpts): AsyncGenerator<TimeSeriesData, void, boolean> {
         return WOS.wshServerRpcHelper_responsestream("remotestreamcpudata", null, opts);

frontend/app/view/preview/preview.tsx

@@ -4,6 +4,7 @@
 import { TypeAheadModal } from "@/app/modals/typeaheadmodal";
 import { ContextMenuModel } from "@/app/store/contextmenu";
 import { tryReinjectKey } from "@/app/store/keymodel";
+import { WshServer } from "@/app/store/wshserver";
 import { Markdown } from "@/element/markdown";
 import { NodeModel } from "@/layout/index";
 import { createBlock, globalStore, refocusNode } from "@/store/global";
@@ -42,6 +43,13 @@ const SpecializedViewMap: { [view: string]: ({ model }: SpecializedViewProps) =>
     directory: DirectoryPreview,
 };
 
+function makeConnRoute(conn: string): string {
+    if (util.isBlank(conn)) {
+        return "conn:local";
+    }
+    return "conn:" + conn;
+}
+
 function isTextFile(mimeType: string): boolean {
     if (mimeType == null) {
         return false;
@@ -484,13 +492,18 @@ export class PreviewModel implements ViewModel {
             this.updateOpenFileModalAndError(false);
             return true;
         }
-        const newPath = fileInfo.dir + "/" + filePath;
-        const conn = globalStore.get(this.connection) ?? "";
-        const newFileInfo = await services.FileService.StatFile(conn, newPath);
-        this.updateOpenFileModalAndError(false);
-        this.goHistory(newFileInfo.path);
-        refocusNode(this.blockId);
-        return true;
+        const conn = globalStore.get(this.connection);
+        try {
+            const newFileInfo = await WshServer.RemoteFileJoinCommand([fileInfo.dir, filePath], {
+                route: makeConnRoute(conn),
+            });
+            this.updateOpenFileModalAndError(false);
+            this.goHistory(newFileInfo.path);
+            refocusNode(this.blockId);
+        } catch (e) {
+            globalStore.set(this.openFileError, e.message);
+            console.error("Error opening file", fileInfo.dir, filePath, e);
+        }
     }
 
     isSpecializedView(sv: string): boolean {