verification: don't request a code twice (#4221)

* verification: check if user has received code

* verification: don't request a code twice

* code style :lint:

js/src/3rdparty/email-verification/index.js

@@ -18,8 +18,10 @@ import { stringify } from 'querystring';
 
 export const isServerRunning = (isTestnet = false) => {
   const port = isTestnet ? 28443 : 18443;
+
   return fetch(`https://email-verification.parity.io:${port}/health`, {
-    mode: 'cors', cache: 'no-store'
+    mode: 'cors',
+    cache: 'no-store'
   })
     .then((res) => {
       return res.ok;
@@ -29,11 +31,30 @@ export const isServerRunning = (isTestnet = false) => {
     });
 };
 
+export const hasReceivedCode = (email, address, isTestnet = false) => {
+  const port = isTestnet ? 28443 : 18443;
+  const query = stringify({ email, address });
+
+  return fetch(`https://email-verification.parity.io:${port}/?${query}`, {
+    mode: 'cors',
+    cache: 'no-store'
+  })
+    .then((res) => {
+      return res.ok;
+    })
+    .catch(() => {
+      return false; // todo: check for 404
+    });
+};
+
 export const postToServer = (query, isTestnet = false) => {
   const port = isTestnet ? 28443 : 18443;
   query = stringify(query);
-  return fetch(`https://email-verification.parity.io:${port}/?` + query, {
-    method: 'POST', mode: 'cors', cache: 'no-store'
+
+  return fetch(`https://email-verification.parity.io:${port}/?${query}`, {
+    method: 'POST',
+    mode: 'cors',
+    cache: 'no-store'
   })
   .then((res) => {
     return res.json().then((data) => {

js/src/3rdparty/sms-verification/index.js

@@ -18,8 +18,10 @@ import { stringify } from 'querystring';
 
 export const isServerRunning = (isTestnet = false) => {
   const port = isTestnet ? 8443 : 443;
+
   return fetch(`https://sms-verification.parity.io:${port}/health`, {
-    mode: 'cors', cache: 'no-store'
+    mode: 'cors',
+    cache: 'no-store'
   })
     .then((res) => {
       return res.ok;
@@ -29,11 +31,30 @@ export const isServerRunning = (isTestnet = false) => {
     });
 };
 
+export const hasReceivedCode = (number, address, isTestnet = false) => {
+  const port = isTestnet ? 8443 : 443;
+  const query = stringify({ number, address });
+
+  return fetch(`https://sms-verification.parity.io:${port}/?${query}`, {
+    mode: 'cors',
+    cache: 'no-store'
+  })
+    .then((res) => {
+      return res.ok;
+    })
+    .catch(() => {
+      return false; // todo: check for 404
+    });
+};
+
 export const postToServer = (query, isTestnet = false) => {
   const port = isTestnet ? 8443 : 443;
   query = stringify(query);
-  return fetch(`https://sms-verification.parity.io:${port}/?` + query, {
-    method: 'POST', mode: 'cors', cache: 'no-store'
+
+  return fetch(`https://sms-verification.parity.io:${port}/?${query}`, {
+    method: 'POST',
+    mode: 'cors',
+    cache: 'no-store'
   })
   .then((res) => {
     return res.json().then((data) => {

js/src/modals/Verification/email-store.js

@@ -21,7 +21,7 @@ import EmailVerificationABI from '~/contracts/abi/email-verification.json';
 import VerificationStore, {
   LOADING, QUERY_DATA, QUERY_CODE, POSTED_CONFIRMATION, DONE
 } from './store';
-import { isServerRunning, postToServer } from '../../3rdparty/email-verification';
+import { isServerRunning, hasReceivedCode, postToServer } from '~/3rdparty/email-verification';
 
 // name in the `BadgeReg.sol` contract
 const EMAIL_VERIFICATION = 'emailverification';
@@ -64,6 +64,10 @@ export default class EmailVerificationStore extends VerificationStore {
     return isServerRunning(this.isTestnet);
   }
 
+  checkIfReceivedCode = () => {
+    return hasReceivedCode(this.email, this.account, this.isTestnet);
+  }
+
   requestValues = () => [ sha3.text(this.email) ]
 
   @action setEmail = (email) => {

js/src/modals/Verification/sms-store.js

@@ -21,7 +21,7 @@ import SMSVerificationABI from '~/contracts/abi/sms-verification.json';
 import VerificationStore, {
   LOADING, QUERY_DATA, QUERY_CODE, POSTED_CONFIRMATION, DONE
 } from './store';
-import { isServerRunning, postToServer } from '../../3rdparty/sms-verification';
+import { isServerRunning, hasReceivedCode, postToServer } from '~/3rdparty/sms-verification';
 
 // name in the `BadgeReg.sol` contract
 const SMS_VERIFICATION = 'smsverification';
@@ -63,6 +63,10 @@ export default class SMSVerificationStore extends VerificationStore {
     return isServerRunning(this.isTestnet);
   }
 
+  checkIfReceivedCode = () => {
+    return hasReceivedCode(this.number, this.account, this.isTestnet);
+  }
+
   @action setNumber = (number) => {
     this.number = number;
   }

js/src/modals/Verification/store.js

@@ -182,11 +182,17 @@ export default class VerificationStore {
     }
 
     chain
-      .then(() => {
+      .then(() => this.checkIfReceivedCode())
+      .then((hasReceived) => {
+        if (hasReceived) {
+          return;
+        }
+
         this.step = REQUESTING_CODE;
-        return this.requestCode();
+        return this
+          .requestCode()
+          .then(() => awaitPuzzle(api, contract, account));
       })
-      .then(() => awaitPuzzle(api, contract, account))
       .then(() => {
         this.step = QUERY_CODE;
       })