Fix SIWE chain-mismatch: switch wallet to Polygon 137 before sign-in and members-area unlock

2026-08-26 05:36:26 -05:00
parent b923bc18bc
commit be129a46a4
3 changed files with 21 additions and 1 deletions
@@ -77,6 +77,22 @@
        }, 220);
      });
    },
-    list:function(){ return probeInjected(found.slice()); }
+    list:function(){ return probeInjected(found.slice()); },
+    // Switch the wallet to Polygon (137) so a SIWE sign-in whose message says
+    // "Chain ID: 137" matches the wallet's active chain — otherwise wallets
+    // refuse the signature with a "chain ID does not match" error. Adds Polygon
+    // if the wallet doesn't have it. Returns a Promise.
+    ensureChain:function(eth){
+      var POLY='0x89';
+      return eth.request({method:'eth_chainId'}).then(function(cid){
+        if(cid===POLY) return true;
+        return eth.request({method:'wallet_switchEthereumChain',params:[{chainId:POLY}]}).then(function(){return true;}).catch(function(e){
+          if(e&&e.code===4902){
+            return eth.request({method:'wallet_addEthereumChain',params:[{chainId:POLY,chainName:'Polygon Mainnet',nativeCurrency:{name:'POL',symbol:'POL',decimals:18},rpcUrls:['https://polygon-rpc.com'],blockExplorerUrls:['https://polygonscan.com']}]}).then(function(){return true;});
+          }
+          throw e;
+        });
+      });
+    }
  };
 })();