feat: add getMedia

src/client/whatsapp.ts

@@ -150,4 +150,8 @@ export class WhatsAppClient {
   sendText(params: SendTextParams) {
     return this.request<any>("sendText", params);
   }
+
+  getMedia(msgId: string) {
+    return this.request<string>("getMedia", msgId);
+  }
 }

src/shared/protocol.ts

@@ -68,4 +68,5 @@ export type BridgeRequest =
   | RpcRequest<"listGroups">
   | RpcRequest<"getMessages", GetMessagesParams>
   | RpcRequest<"searchMessages", SearchMessagesParams>
-  | RpcRequest<"sendText", SendTextParams>;
+  | RpcRequest<"sendText", SendTextParams>
+  | RpcRequest<"getMedia", string>;

src/userscript/index.ts

@@ -108,6 +108,12 @@ async function handleRequest(request: BridgeRequest) {
       return serialize(result);
     }
 
+    case "getMedia":
+      const media = await WPP.chat
+        .downloadMedia(request.params)
+        .then(WPP.util.blobToBase64);
+      return media;
+
     default:
       throw new Error(`Unknown method: ${(request as any).method}`);
   }

src/userscript/types.d.ts

@@ -48,6 +48,8 @@ declare const WPP: {
       },
     ): Promise<any>;
 
+    downloadMedia(msgId: string): Promise<Blob>;
+
     on(event: string, callback: (...args: any[]) => void): void;
   };
 
@@ -60,5 +62,9 @@ declare const WPP: {
     getAllGroups(): Promise<any[]>;
   };
 
+  util: {
+    blobToBase64: (blob: Blob) => Promise<string>;
+  };
+
   on(event: string, callback: (...args: any[]) => void): void;
 };