added signMessage method to provider

Author: m-aboelenein

index.ts

@@ -2,3 +2,4 @@ export * from './src/address/index';
 export * from './src/provider';
 export * from './src/call';
 export * from './src/transactions/signTransaction';
+export * from './src/signatures';

src/provider/index.ts

@@ -2,14 +2,15 @@ import { SignTransactionResponse } from '../transactions/signTransaction';
 import { GetAddressResponse } from '../address';
 
 export interface BitcoinNetwork {
-  type: string;
-  address: string;
+  type: 'Mainnet' | 'Testnet';
+  address?: string;
 }
 
 export interface BitcoinProvider {
   connect: (request: string) => Promise<GetAddressResponse>;
   call: (request: string) => Promise<Record<string, any>>;
   signTransaction: (request: string) => Promise<SignTransactionResponse>;
+  signMessage: (request: string) => Promise<string>
 }
 
 declare global {

src/signatures/index.ts

@@ -0,0 +1,19 @@
+import { createUnsecuredToken, Json } from 'jsontokens';
+import { SignMessageOptions } from './types';
+
+export const signMessage = async (options: SignMessageOptions) => {
+  const provider = window.BitcoinProvider;
+  if (!provider) {
+    throw new Error('No Bitcoin Wallet installed');
+  }
+  try {
+    const request = createUnsecuredToken(options.payload as unknown as Json);
+    const response  = await provider.signMessage(request);
+    options.onFinish?.(response);
+  } catch (error) {
+    console.error('[Connect] Error during Signing request', error);
+    options.onCancel?.();
+  }
+};
+
+export * from './types';

src/signatures/types.ts

@@ -0,0 +1,13 @@
+import { BitcoinNetwork } from '../provider';
+
+export interface SignMessagePayload {
+  address: string;
+  message: string;
+  network: BitcoinNetwork;
+}
+
+export interface SignMessageOptions {
+  onFinish: (response: string) => void;
+  onCancel: () => void;
+  payload: SignMessagePayload;
+}