Feat: warn admin if address is duplicate

lib/blacklist.js

@@ -21,13 +21,10 @@ const deleteFromBlacklist = (cryptoCode, address) => {
 
 const insertIntoBlacklist = (cryptoCode, address) => {
   return db
-    .any(
+    .none(
       'insert into blacklist(crypto_code, address, created_by_operator) values($1, $2, $3);',
       [cryptoCode, address, true]
     )
-    .then(() => {
-      return { cryptoCode, address }
-    })
 }
 
 function blocked(address, cryptoCode) {

new-lamassu-admin/src/pages/Blacklist/Blacklist.js

@@ -73,14 +73,15 @@ const Blacklist = () => {
     code: 'BTC',
     display: 'Bitcoin'
   })
+  const [errorMsg, setErrorMsg] = useState(null)
+
   const [deleteEntry] = useMutation(DELETE_ROW, {
     onError: () => console.error('Error while deleting row'),
     refetchQueries: () => ['getBlacklistData']
   })
 
   const [addEntry] = useMutation(ADD_ROW, {
-    onError: () => console.error('Error while adding row'),
+    onError: () => console.log('Error while adding row'),
-    onCompleted: () => setShowModal(false),
     refetchQueries: () => ['getBlacklistData']
   })
 
@@ -114,8 +115,20 @@ const Blacklist = () => {
     deleteEntry({ variables: { cryptoCode, address } })
   }
 
-  const addToBlacklist = (cryptoCode, address) => {
+  const addToBlacklist = async (cryptoCode, address) => {
-    addEntry({ variables: { cryptoCode, address } })
+    setErrorMsg(null)
+    const res = await addEntry({ variables: { cryptoCode, address } })
+    if (!res.errors) {
+      return setShowModal(false)
+    }
+    const duplicateKeyError = res.errors.some(e => {
+      return e.message.includes('duplicate')
+    })
+    if (duplicateKeyError) {
+      setErrorMsg('This address is already being blocked')
+    } else {
+      setErrorMsg('Server error')
+    }
   }
 
   return (
@@ -169,7 +182,11 @@ const Blacklist = () => {
       </Grid>
       {showModal && (
         <BlackListModal
-          onClose={() => setShowModal(false)}
+          onClose={() => {
+            setErrorMsg(null)
+            setShowModal(false)
+          }}
+          errorMsg={errorMsg}
           selectedCoin={clickedItem}
           addToBlacklist={addToBlacklist}
         />

new-lamassu-admin/src/pages/Blacklist/Blacklist.styles.js

@@ -1,6 +1,11 @@
-import { spacer, fontPrimary, primaryColor, white } from 'src/styling/variables'
+import {
-
+  spacer,
-export default {
+  fontPrimary,
+  primaryColor,
+  white,
+  errorColor
+} from 'src/styling/variables'
+const styles = {
   grid: {
     flex: 1,
     height: '100%'
@@ -35,5 +40,10 @@ export default {
   },
   addressRow: {
     marginLeft: 8
+  },
+  error: {
+    color: errorColor
   }
 }
+
+export default styles

new-lamassu-admin/src/pages/Blacklist/BlacklistModal.js

@@ -12,13 +12,16 @@ import { H3 } from 'src/components/typography'
 import styles from './Blacklist.styles'
 const useStyles = makeStyles(styles)
 
-const BlackListModal = ({ onClose, selectedCoin, addToBlacklist }) => {
+const BlackListModal = ({
+  onClose,
+  selectedCoin,
+  addToBlacklist,
+  errorMsg
+}) => {
   const classes = useStyles()
-
   const handleAddToBlacklist = address => {
     addToBlacklist(selectedCoin.code, address)
   }
-
   const placeholderAddress = {
     BTC: '1ADwinnimZKGgQ3dpyfoUZvJh4p1UWSSpD',
     ETH: '0x71C7656EC7ab88b098defB751B7401B5f6d8976F',
@@ -54,6 +57,7 @@ const BlackListModal = ({ onClose, selectedCoin, addToBlacklist }) => {
               ? `Blacklist ${R.toLower(selectedCoin.display)} address`
               : ''}
           </H3>
+          <span className={classes.error}>{errorMsg}</span>
           <Field
             name="address"
             fullWidth