add dynamic error email if transaction failed

community_server/src/Controller/AppRequestsController.php

@@ -323,23 +323,33 @@ class AppRequestsController extends AppController
           $this->addAdminError('StateBalancesController', 'overview', $gdtEntries, $user['id'] ? $user['id'] : 0);
         }
 
+        $stateUserTransactions_total = $stateUserTransactionsTable
+                                        ->find()
+                                        ->select(['id'])
+                                        ->where(['state_user_id' => $user['id']])
+                                        ->contain([]);
         
         $stateUserTransactionsQuery = $stateUserTransactionsTable
                                         ->find()
                                         ->where(['state_user_id' => $user['id']])
-                                        ->order(['balance_date' => 'ASC'])
+                                        ->order(['balance_date' => $orderDirection])
                                         ->contain([])
                                         ->limit($count)
                                         ->page($page)
                                         ;
         $decay = true;
         $transactions = [];
+        $transactions_from_db = $stateUserTransactionsQuery->toArray();
         if($stateUserTransactionsQuery->count() > 0) {
-            $transactions = $transactionsTable->listTransactionsHumanReadable($stateUserTransactionsQuery->toArray(), $user, $decay);
+            if($orderDirection == 'DESC') {
+                $transactions_from_db = array_reverse($transactions_from_db);
+            }
+            $transactions = $transactionsTable->listTransactionsHumanReadable($transactions_from_db, $user, $decay);
             
             if($orderDirection == 'DESC') {
                 $transactions = array_reverse($transactions);
             }
+            
         }
         
         $state_balance = $stateBalancesTable->find()->where(['state_user_id' => $user['id']])->first();
@@ -348,7 +358,7 @@ class AppRequestsController extends AppController
             'state' => 'success',
             'transactions' => $transactions,
             'transactionExecutingCount' => $session->read('Transactions.executing'),
-            'count' => count($transactions),
+            'count' => $stateUserTransactions_total->count(),
             'gdtSum' => $gdtSum,
             'timeUsed' => microtime(true) - $startTime
         ];

community_server/src/Controller/JsonRequestHandlerController.php

@@ -4,9 +4,9 @@ namespace App\Controller;
 
 use App\Controller\AppController;
 use Cake\ORM\TableRegistry;
-use Cake\Routing\Router;
 use Cake\Http\Client;
 use Cake\Core\Configure;
+use Cake\Mailer\Email;
 
 use Model\Transactions\TransactionTransfer;
 use Model\Transactions\Transaction;
@@ -333,32 +333,71 @@ class JsonRequestHandlerController extends AppController {
       return $this->returnJson(['state' => 'success']);
     }
     
+    private function sendEMailTransactionFailed($transaction, $reason_type)
+    {
+        $disable_email = Configure::read('disableEmail', false);  
+        if($disable_email) {
+            return;
+        }
+        $transaction_body = $transaction->getTransactionBody();
+        $transaction_type_name = $transaction_body->getTransactionTypeName();
+        $senderUser = null;
+        if($transaction_type_name === 'transfer') {
+            $senderUser = $transaction_body->getSpecificTransaction()->getSenderUser();
+        } else if($transaction_type_name === 'creation') {
+            $senderUser = $transaction->getFirstSigningUser();
+        }
+      // send notification email
+        $noReplyEmail = Configure::read('noReplyEmail');
+        if($senderUser) {
+          try {
+            $email = new Email();
+            $emailViewBuilder = $email->viewBuilder();
+            $emailViewBuilder->setTemplate('notificationTransactionFailed')
+                             ->setVars(['user' => $senderUser, 'transaction' => $transaction, 'reason' => $reason_type]);
+            $receiverNames = $senderUser->getNames();
+            if($receiverNames == '' || $senderUser->email == '') {
+              $this->addError('TransactionCreation::sendNotificationEmail', 'to email is empty for user: ' . $senderUser->id);
+              return false;
+            }
+            $email->setFrom([$noReplyEmail => 'Gradido (nicht antworten)'])
+                  ->setTo([$senderUser->email => $senderUser->getNames()])
+                  ->setSubject(__('Gradido Transaktion fehlgeschlagen!'))
+                  ->send();
+          } catch(Exception $e) {
+                $this->addAdminError('JsonRequestController', 'sendEMailTransactionFailed', [$e->getMessage(), $reason_type], $senderUser->id);
+
+          }        
+       }
+    }
+  
     private function putTransaction($transactionBase64) {
       $transaction = new Transaction($transactionBase64);
       //echo "after new transaction<br>";
       if($transaction->hasErrors()) {
+        $this->sendEMailTransactionFailed($transaction, 'parse');
         return $this->returnJson(['state' => 'error', 'msg' => 'error parsing transaction', 'details' => $transaction->getErrors()]);
       }
       //echo "after check on errors<br>";
       if(!$transaction->validate()) {
+          //$transaction_details
+        $this->sendEMailTransactionFailed($transaction, 'validate');
         return $this->returnJsonSaveError($transaction, ['state' => 'error', 'msg' => 'error validate transaction', 'details' => $transaction->getErrors()]);
       }
       //echo "after validate <br>";
       
       if ($transaction->save()) {
-        
-        
         // success
         return $this->returnJson(['state' => 'success']);
       } else {
+          
+        $this->sendEMailTransactionFailed($transaction, 'save');
         return $this->returnJsonSaveError($transaction, [
             'state' => 'error', 
             'msg' => 'error saving transaction in db', 
             'details' => json_encode($transaction->getErrors())
         ]);
       }
-      
-      return $this->returnJson(['state' => 'success']);
     }
     
     private function moveTransaction($pubkeys, $memo, $session_id) {

community_server/src/Model/Transactions/Transaction.php

@@ -98,6 +98,11 @@ class Transaction extends TransactionBase {
       return $sigPairs[0]->getPubKey();
     }
     
+    public function getFirstSigningUser()
+    {
+        return $this->getStateUserFromPublickey($this->getFirstPublic());
+    }
+    
     public function getId() {
       return $this->mProtoTransaction->getId();
     }

community_server/src/Model/Transactions/TransactionBase.php

@@ -61,6 +61,16 @@ class TransactionBase {
       return NULL;
     }
     
+    protected function getStateUserFromPublickey($publicKey) {
+        $stateUsersTable = self::getTable('state_users');
+        $stateUser = $stateUsersTable->find('all')->where(['public_key' => $publicKey])->first();
+        if($stateUser) {
+          return $stateUser;
+        }
+      
+      return NULL;
+    }
+
 
     protected function updateStateBalance($stateUserId, $addAmountCent, $recordDate) {
         $stateBalancesTable = self::getTable('stateBalances');

community_server/src/Model/Transactions/TransactionCreation.php

@@ -72,7 +72,12 @@ class TransactionCreation extends TransactionBase {
       return $this->protoTransactionCreation->getReceiver()->getPubkey();
     }
     
-    
+    public function getReceiverUser() {
+        return $this->getStateUserFromPublickey($this->getReceiverPublic());
+    }
+    public function getTargetDate() {
+        return new FrozenDate($this->protoTransactionCreation->getTargetDate()->getSeconds());
+    }
     
     public function validate($sigPairs) {
       // check if receiver public is not in signature list

community_server/src/Model/Transactions/TransactionTransfer.php

@@ -186,11 +186,9 @@ class TransactionTransfer extends TransactionBase {
       $local_transfer = $this->protoTransactionTransfer->getLocal();
       $sender = $local_transfer->getSender();
       $senderAmount = $sender->getAmount();
-      $senderUserId = $this->getStateUserId($sender->getPubkey());
-      $receiverUserId = $this->getStateUserId($local_transfer->getReceiver());
+      $senderUser = $this->getStateUserFromPublickey($sender->getPubkey());
+      $receiverUser = $this->getStateUserFromPublickey($local_transfer->getReceiver());
       
-      $receiverUser = $this->getStateUser($receiverUserId);
-      $senderUser   = $this->getStateUser($senderUserId);
       $serverAdminEmail = Configure::read('ServerAdminEmail');
 
       try {
@@ -218,6 +216,25 @@ class TransactionTransfer extends TransactionBase {
       return true;
     }
     
+    public function getSenderUser()
+    {
+        $local_transfer = $this->protoTransactionTransfer->getLocal();
+        return $this->getStateUserFromPublickey($local_transfer->getSender()->getPubkey());
+    }
+    
+    public function getReceiverUser()
+    {
+        $local_transfer = $this->protoTransactionTransfer->getLocal();
+        return $this->getStateUserFromPublickey($local_transfer->getReceiver());
+    }
+    
+    public function getAmount()
+    {
+        $local_transfer = $this->protoTransactionTransfer->getLocal();
+        $sender = $local_transfer->getSender();
+        return $sender->getAmount();
+    }
+    
     static public function fromEntity($transactionTransferEntity)
     {
       $protoTransfer = new \Proto\Gradido\GradidoTransfer();

community_server/src/Template/Email/text/notification_transaction_failed.ctp

@@ -0,0 +1,50 @@
+<?php
+
+/* 
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+$this->assign('title', __('Gradido Transaktion fehlgeschlagen'));
+
+$transaction_body = $transaction->getTransactionBody();
+$specific_transaction = $transaction_body->getSpecificTransaction();
+$transaction_type_name = $transaction_body->getTransactionTypeName();
+              
+?><?= __('Hallo') ?> <?= $user->first_name ?> <?= $user->last_name ?>, 
+ 
+<?= __('Deine letzte Transaktion ist leider fehlgeschlagen.') ?>
+
+
+<?php if($reason != 'parse') : 
+      if($transaction_type_name === 'creation') : ?><?= __('Du wolltest {0} für {1} schöpfen.', 
+            $this->element('printGradido', ['number' => $specific_transaction->getAmount(), 'raw' => true]),
+            $specific_transaction->getReceiverUser()->getEmailWithName()) ?>
+
+<?= __('Das Zieldatum war: ') . $specific_transaction->getTargetDate()->format('d.m.Y') ?>
+<?php elseif($transaction_type_name === 'transfer'): ?>
+<?= __('Du wolltest {0} an {1} senden.',
+            $this->element('printGradido', ['number' => $specific_transaction->getAmount(), 'raw' => true]),
+            $specific_transaction->getReceiverUser()->getEmailWithName()) ?>
+<?php endif; endif; ?>
+
+
+<?= __('Das ist schief gelaufen: ') ?>
+
+<?php switch($reason) {
+    case 'save': echo __('Fehler beim speichern in der Datenbank. Bitte versuche es später erneut'); break;
+    case 'parse': echo __('Fehler beim parsen der Transaktion. Bitte versuche es später erneut'); break;
+    case 'validate': 
+        $errors = $transaction->getErrors();
+        foreach($errors as $error) {
+            //echo "\t".json_encode($error);
+            echo "\n\t".$error[array_keys($error)[0]]."\n";
+        }
+}?>
+
+
+<?= __('Bitte antworte nicht auf diese E-Mail!'); ?>
+ 
+
+<?= __('Mit freundlichen Grüßen'); ?> 
+Gradido Community Server