decoupling zome call signer logic from js-client

holochain · Jan 26, 2024 · d915eac · d915eac
1 parent a435f9e
commit d915eac
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Showing 2 changed files with 17 additions and 4 deletions.
diff --git a/src/api/app/websocket.ts b/src/api/app/websocket.ts
@@ -3,6 +3,7 @@ import { decode, encode } from "@msgpack/msgpack";
 import Emittery from "emittery";
 import nacl from "tweetnacl";
 import {
+  getHostZomeCallSigner,
   getLauncherEnvironment,
   isLauncher,
   signZomeCallTauri,
@@ -193,10 +194,13 @@ const callZomeTransform: Transformer<
     if ("signature" in request) {
       return request;
     }
-    const signedZomeCall = isLauncher
-      ? await signZomeCallTauri(request)
-      : await signZomeCall(request);
-    return signedZomeCall;
+    const hostSigner = getHostZomeCallSigner();
+    if (hostSigner) {
+      return hostSigner.signZomeCall(request);
+    } else if (isLauncher) {
+      return signZomeCallTauri(request);
+    }
+    return signZomeCall(request);
   },
   output: (response) => decode(response),
 };

diff --git a/src/environments/launcher.ts b/src/environments/launcher.ts
@@ -15,17 +15,26 @@ export interface LauncherEnvironment {
   INSTALLED_APP_ID?: InstalledAppId;
 }
 
+export interface HostZomeCallSigner {
+  signZomeCall: (request: CallZomeRequest) => Promise<CallZomeRequestSigned>;
+}
+
 const __HC_LAUNCHER_ENV__ = "__HC_LAUNCHER_ENV__";
+const __HC_ZOME_CALL_SIGNER__ = "__HC_ZOME_CALL_SIGNER__";
 
 export const isLauncher =
   typeof window === "object" && __HC_LAUNCHER_ENV__ in window;
 
 export const getLauncherEnvironment = (): LauncherEnvironment | undefined =>
   isLauncher ? window[__HC_LAUNCHER_ENV__] : undefined;
 
+export const getHostZomeCallSigner = (): HostZomeCallSigner | undefined =>
+  globalThis.window && globalThis.window[__HC_ZOME_CALL_SIGNER__];
+
 declare global {
   interface Window {
     [__HC_LAUNCHER_ENV__]: LauncherEnvironment | undefined;
+    [__HC_ZOME_CALL_SIGNER__]?: HostZomeCallSigner;
   }
 }