Fixed some issues in import, should improve results for #701

app/Import/Object/ImportAccount.php

@@ -264,8 +264,10 @@ class ImportAccount
 
             return new Account;
         }
-
+        // must be of the same type
-        if ($account->accountType->type !== $this->expectedType) {
+        // except when mapped is an asset, then it's fair game.
+        // which only shows that user must map very carefully.
+        if ($account->accountType->type !== $this->expectedType && $account->accountType->type !== AccountType::ASSET) {
             Log::error(
                 sprintf(
                     'Mapped account #%d is of type "%s" but we expect a "%s"-account. Mapping will be ignored.', $account->id, $account->accountType->type,

app/Import/Object/ImportJournal.php

@@ -226,7 +226,7 @@ class ImportJournal
                 $this->date = $array['value'];
                 break;
             case 'description':
-                $this->description = $array['value'];
+                $this->description .= $array['value'];
                 break;
             case 'sepa-ct-op':
             case 'sepa-ct-id':

app/Import/Storage/ImportStorage.php

@@ -29,6 +29,7 @@ use FireflyIII\Models\TransactionJournal;
 use FireflyIII\Models\TransactionType;
 use FireflyIII\Repositories\Currency\CurrencyRepositoryInterface;
 use FireflyIII\Rules\Processor;
+use Illuminate\Database\Query\JoinClause;
 use Illuminate\Support\Collection;
 use Log;
 use Steam;
@@ -323,6 +324,15 @@ class ImportStorage
         /*** First step done! */
         $this->job->addStepsDone(1);
 
+        // could be that transfer is double: verify this.
+        if ($this->verifyDoubleTransfer($transactionType, $importJournal)) {
+            // add three steps:
+            $this->job->addStepsDone(3);
+            // throw error
+            throw new FireflyException('Detected a possible duplicate, skip this one.');
+
+        }
+
         // create a journal:
         $journal                          = new TransactionJournal;
         $journal->user_id                 = $this->job->user_id;
@@ -336,7 +346,9 @@ class ImportStorage
 
         if (!$journal->save()) {
             $errorText = join(', ', $journal->getErrors()->all());
+            // add three steps:
             $this->job->addStepsDone(3);
+            // throw error
             throw new FireflyException($errorText);
         }
 
@@ -402,4 +414,80 @@ class ImportStorage
         }
     }
 
+    /**
+     * This method checks if the given transaction is a transfer and if so, if it might be a duplicate of an already imported transfer.
+     * This is important for import files that cover multiple accounts (and include both A<>B and B<>A transactions).
+     *
+     * @param TransactionType $transactionType
+     * @param ImportJournal   $importJournal
+     *
+     * @return bool
+     */
+    private function verifyDoubleTransfer(TransactionType $transactionType, ImportJournal $importJournal): bool
+    {
+        if ($transactionType->type === TransactionType::TRANSFER) {
+            $amount      = Steam::positive($importJournal->getAmount());
+            $asset       = $importJournal->asset->getAccount();
+            $opposing    = $this->getOpposingAccount($importJournal->opposing, $amount);
+            $date        = $importJournal->getDate($this->dateFormat);
+            $description = $importJournal->description;
+            $set         = TransactionJournal::
+            leftJoin('transaction_types', 'transaction_types.id', '=', 'transaction_journals.transaction_type_id')
+                                             ->leftJoin(
+                                                 'transactions AS source', function (JoinClause $join) {
+                                                 $join->on('transaction_journals.id', '=', 'source.transaction_journal_id')->where('source.amount', '<', 0);
+                                             }
+                                             )
+                                             ->leftJoin(
+                                                 'transactions AS destination', function (JoinClause $join) {
+                                                 $join->on('transaction_journals.id', '=', 'destination.transaction_journal_id')->where(
+                                                     'destination.amount', '>', 0
+                                                 );
+                                             }
+                                             )
+                                             ->leftJoin('accounts as source_accounts', 'source.account_id', '=', 'source_accounts.id')
+                                             ->leftJoin('accounts as destination_accounts', 'destination.account_id', '=', 'destination_accounts.id')
+                                             ->where('transaction_journals.user_id', $this->job->user_id)
+                                             ->where('transaction_types.type', TransactionType::TRANSFER)
+                                             ->where('transaction_journals.date', $date->format('Y-m-d'))
+                                             ->where('destination.amount', $amount)
+                                             ->get(
+                                                 ['transaction_journals.id', 'transaction_journals.encrypted', 'transaction_journals.description',
+                                                  'source_accounts.name as source_name', 'destination_accounts.name as destination_name']
+                                             );
+            if ($set->count() > 0) {
+                $filtered = $set->filter(
+                    function (TransactionJournal $journal) use ($asset, $opposing, $description) {
+                        $match   = true;
+                        $compare = [$asset->name, $opposing->name];
+
+                        if ($journal->description !== $description) {
+                            $match = false;
+                        }
+                        // when both are in array match is true. So reverse:
+                        if (!(in_array(app('steam')->tryDecrypt($journal->source_name), $compare)
+                              && in_array(
+                                  app('steam')->tryDecrypt($journal->destination_name), $compare
+                              ))
+                        ) {
+                            $match = false;
+                        }
+
+                        if ($match) {
+                            return $journal;
+                        }
+
+                        return null;
+                    }
+                );
+                if (count($filtered) > 0) {
+                    return true;
+                }
+            }
+        }
+
+
+        return false;
+    }
+
 }

app/Support/CacheProperties.php

@@ -119,8 +119,6 @@ class CacheProperties
 
             $this->md5 .= json_encode($property);
         }
-        Log::debug(sprintf('Cache string is %s', $this->md5));
         $this->md5 = md5($this->md5);
-        Log::debug(sprintf('Cache MD5 is    %s', $this->md5));
     }
 }

app/Support/Import/Configuration/Csv/Map.php

@@ -92,7 +92,9 @@ class Map implements ConfigurationInterface
         }
         foreach ($this->data as $index => $entry) {
             $this->data[$index]['values'] = array_unique($this->data[$index]['values']);
+            asort($this->data[$index]['values']);
         }
+
         // save number of rows, thus number of steps, in job:
         $steps                      = $rowIndex * 5;
         $extended                   = $this->job->extended_status;

app/Support/Steam.php

@@ -19,6 +19,7 @@ use Crypt;
 use DB;
 use FireflyIII\Models\Account;
 use FireflyIII\Models\Transaction;
+use Illuminate\Contracts\Encryption\DecryptException;
 use Illuminate\Support\Collection;
 
 /**
@@ -248,6 +249,21 @@ class Steam
 
         return $value;
     }
+    /**
+     * @param $value
+     *
+     * @return mixed
+     */
+    public function tryDecrypt($value)
+    {
+        try {
+            $value = Crypt::decrypt($value);
+        } catch (DecryptException $e) {
+            // do not care.
+        }
+
+        return $value;
+    }
 
     /**
      * @param array $accounts