bridge_ui: safely set target chain in recovery

Change-Id: I7d6e03b56b61129d72ef641059871ff362a3f0f4

bridge_ui/src/components/Recovery.tsx

@@ -519,14 +519,6 @@ export default function Recovery() {
                   fullWidth
                   margin="normal"
                 />
-                <TextField
-                  variant="outlined"
-                  label="Target Chain"
-                  disabled
-                  value={parsedPayload?.targetChain.toString() || ""}
-                  fullWidth
-                  margin="normal"
-                />
                 <TextField
                   variant="outlined"
                   label="Target Address"

bridge_ui/src/store/nftSlice.ts

@@ -217,8 +217,14 @@ export const nftSlice = createSlice({
         };
       }>
     ) => {
+      const prevTargetChain = state.targetChain;
       state.signedVAAHex = action.payload.vaa;
       state.targetChain = action.payload.parsedPayload.targetChain;
+      if (state.sourceChain === action.payload.parsedPayload.targetChain) {
+        state.sourceChain = prevTargetChain;
+        state.sourceParsedTokenAccount = undefined;
+        state.sourceParsedTokenAccounts = getEmptyDataWrapper();
+      }
       state.targetAddressHex = action.payload.parsedPayload.targetAddress;
       state.originChain = action.payload.parsedPayload.originChain;
       state.originAsset = action.payload.parsedPayload.originAddress;

bridge_ui/src/store/selectors.ts

@@ -121,6 +121,9 @@ export const selectNFTTargetError = (state: RootState) => {
   if (!state.nft.targetChain) {
     return "Select a target chain";
   }
+  if (state.nft.sourceChain === state.nft.targetChain) {
+    return "Select a different target and source";
+  }
   if (state.nft.targetChain === CHAIN_ID_SOLANA && !state.nft.targetAsset) {
     // target asset is only required for solana
     // in the cases of new transfers, target asset will not exist and be created on redeem
@@ -256,6 +259,9 @@ export const selectTransferTargetError = (state: RootState) => {
   if (!state.transfer.targetChain) {
     return "Select a target chain";
   }
+  if (state.transfer.sourceChain === state.transfer.targetChain) {
+    return "Select a different target and source";
+  }
   if (!state.transfer.targetAsset) {
     return UNREGISTERED_ERROR_MESSAGE;
   }

bridge_ui/src/store/transferSlice.ts

@@ -228,8 +228,14 @@ export const transferSlice = createSlice({
         };
       }>
     ) => {
+      const prevTargetChain = state.targetChain;
       state.signedVAAHex = action.payload.vaa;
       state.targetChain = action.payload.parsedPayload.targetChain;
+      if (state.sourceChain === action.payload.parsedPayload.targetChain) {
+        state.sourceChain = prevTargetChain;
+        state.sourceParsedTokenAccount = undefined;
+        state.sourceParsedTokenAccounts = getEmptyDataWrapper();
+      }
       state.targetAddressHex = action.payload.parsedPayload.targetAddress;
       state.originChain = action.payload.parsedPayload.originChain;
       state.originAsset = action.payload.parsedPayload.originAddress;