Доработать клиентский UI Solana-регистрации

shine-UI/js/services/solana-register-service.js

@@ -6,6 +6,7 @@ import {
 
 const CLASSIFY_LOGIN_INSTRUCTION_TAG = 1;
 const PRECHECK_SIM_PAYER = 'FUc28vNixp7F3nnkpGVt6nuJbgvJ4429v4B5wS52Df6P';
+const SHINE_USERS_USER_PDA_SEED_PREFIX = 'user_login=';
 
 let solanaLibPromise = null;
 function loadSolanaLib() {
@@ -71,6 +72,15 @@ export function formatSolanaErrorDetails(error) {
   return parts.join(' :: ');
 }
 
+export function isUserAlreadyExistsSolanaError(error) {
+  const details = formatSolanaErrorDetails(error);
+  return details.includes('UserAlreadyExists')
+    || details.includes('custom program error: 0x4')
+    || details.includes('"Custom":4')
+    || details.includes('"InstructionError":[2,{"Custom":4}]')
+    || details.includes('Instruction 2: custom program error: 0x4');
+}
+
 export async function precheckLoginClassOnSolana({ login, solanaEndpoint }) {
   const solana = await loadSolanaLib();
   const connection = new solana.Connection(String(solanaEndpoint || ''), 'confirmed');
@@ -121,7 +131,7 @@ export async function checkLoginExistsOnSolana({ login, solanaEndpoint }) {
     throw new Error('EMPTY_LOGIN');
   }
   const [userPda] = solana.PublicKey.findProgramAddressSync(
-    [enc.encode('login='), enc.encode(loginNorm)],
+    [enc.encode(SHINE_USERS_USER_PDA_SEED_PREFIX), enc.encode(loginNorm)],
     usersProgram,
   );
   const ai = await connection.getAccountInfo(userPda, 'confirmed');