From b9feb0aa71549e2de38a4eb5c618747774239074 Mon Sep 17 00:00:00 2001
From: James Cole <james@firefly-iii.org>
Date: Wed, 29 Nov 2023 06:30:35 +0100
Subject: [PATCH] Fix various phpstan things

---
 .../Budget/BudgetLimitController.php          |  3 +-
 .../Controllers/Budget/IndexController.php    | 13 +++---
 app/Http/Controllers/DebugController.php      |  4 +-
 app/Http/Controllers/JavascriptController.php | 10 ++---
 .../Controllers/PiggyBank/IndexController.php |  4 +-
 .../Transaction/ShowController.php            |  5 +--
 .../Controllers/Webhooks/IndexController.php  |  6 +--
 app/Http/Middleware/Authenticate.php          |  1 +
 .../Budget/OperationsRepository.php           | 17 --------
 .../Http/Api/ValidatesUserGroupTrait.php      |  2 +-
 app/Support/Http/Controllers/AugumentData.php | 14 +++++-
 .../Http/Controllers/GetConfigurationData.php |  4 +-
 .../Http/Controllers/ModelInformation.php     |  1 +
 .../Http/Controllers/RenderPartialViews.php   |  8 +++-
 .../Repositories/UserGroup/UserGroupTrait.php |  4 ++
 app/Support/Request/ChecksLogin.php           |  2 +-
 app/Support/Request/ConvertsDataTypes.php     |  6 +--
 app/Validation/FireflyValidator.php           | 43 ++++++++++++-------
 app/Validation/TransactionValidation.php      |  8 ++--
 19 files changed, 77 insertions(+), 78 deletions(-)

diff --git a/app/Http/Controllers/Budget/BudgetLimitController.php b/app/Http/Controllers/Budget/BudgetLimitController.php
index 18696c7156..3a7605bd78 100644
--- a/app/Http/Controllers/Budget/BudgetLimitController.php
+++ b/app/Http/Controllers/Budget/BudgetLimitController.php
@@ -106,12 +106,11 @@ class BudgetLimitController extends Controller
     }
 
     /**
-     * @param Request     $request
      * @param BudgetLimit $budgetLimit
      *
      * @return RedirectResponse|Redirector
      */
-    public function delete(Request $request, BudgetLimit $budgetLimit)
+    public function delete(BudgetLimit $budgetLimit)
     {
         $this->blRepository->destroyBudgetLimit($budgetLimit);
         session()->flash('success', trans('firefly.deleted_bl'));
diff --git a/app/Http/Controllers/Budget/IndexController.php b/app/Http/Controllers/Budget/IndexController.php
index 23b54d6da6..534fb9b8d5 100644
--- a/app/Http/Controllers/Budget/IndexController.php
+++ b/app/Http/Controllers/Budget/IndexController.php
@@ -87,8 +87,6 @@ class IndexController extends Controller
     /**
      * Show all budgets.
      *
-     * @param Request     $request
-     *
      * @param Carbon|null $start
      * @param Carbon|null $end
      *
@@ -98,7 +96,7 @@ class IndexController extends Controller
      * @throws ContainerExceptionInterface
      * @throws NotFoundExceptionInterface
      */
-    public function index(Request $request, Carbon $start = null, Carbon $end = null)
+    public function index(Carbon $start = null, Carbon $end = null)
     {
         $this->abRepository->cleanup();
         app('log')->debug(sprintf('Start of IndexController::index("%s", "%s")', $start?->format('Y-m-d'), $end?->format('Y-m-d')));
@@ -137,7 +135,7 @@ class IndexController extends Controller
 
         // get budgeted for default currency:
         if (0 === count($availableBudgets)) {
-            $budgeted = $this->blRepository->budgeted($start, $end, $defaultCurrency, );
+            $budgeted = $this->blRepository->budgeted($start, $end, $defaultCurrency,);
             $spentArr = $this->opsRepository->sumExpenses($start, $end, null, null, $defaultCurrency);
             $spent    = $spentArr[$defaultCurrency->id]['sum'] ?? '0';
             unset($spentArr);
@@ -196,7 +194,7 @@ class IndexController extends Controller
             $array['spent'] = $spentArr[$entry->transaction_currency_id]['sum'] ?? '0';
 
             // budgeted in period:
-            $budgeted           = $this->blRepository->budgeted($entry->start_date, $entry->end_date, $entry->transactionCurrency, );
+            $budgeted           = $this->blRepository->budgeted($entry->start_date, $entry->end_date, $entry->transactionCurrency,);
             $array['budgeted']  = $budgeted;
             $availableBudgets[] = $array;
             unset($spentArr);
@@ -320,10 +318,9 @@ class IndexController extends Controller
         }
         // final calculation for 'left':
         /**
-         * @var int   $currencyId
-         * @var array $info
+         * @var int $currencyId
          */
-        foreach ($sums['budgeted'] as $currencyId => $info) {
+        foreach (array_keys($sums['budgeted']) as $currencyId) {
             $spent                               = $sums['spent'][$currencyId]['amount'] ?? '0';
             $budgeted                            = $sums['budgeted'][$currencyId]['amount'] ?? '0';
             $sums['left'][$currencyId]['amount'] = bcadd($spent, $budgeted);
diff --git a/app/Http/Controllers/DebugController.php b/app/Http/Controllers/DebugController.php
index 126b19a845..f2b9934c14 100644
--- a/app/Http/Controllers/DebugController.php
+++ b/app/Http/Controllers/DebugController.php
@@ -115,12 +115,10 @@ class DebugController extends Controller
     /**
      * Show debug info.
      *
-     * @param Request $request
-     *
      * @return Factory|View
      * @throws FireflyException
      */
-    public function index(Request $request)
+    public function index()
     {
         $table = $this->generateTable();
         $table = str_replace(["\n", "\t", '  '], '', $table);
diff --git a/app/Http/Controllers/JavascriptController.php b/app/Http/Controllers/JavascriptController.php
index 614f491830..b10f43dd89 100644
--- a/app/Http/Controllers/JavascriptController.php
+++ b/app/Http/Controllers/JavascriptController.php
@@ -48,13 +48,12 @@ class JavascriptController extends Controller
      * Show info about accounts.
      *
      * @param AccountRepositoryInterface  $repository
-     * @param CurrencyRepositoryInterface $currencyRepository
      *
      * @return Response
      * @throws ContainerExceptionInterface
      * @throws NotFoundExceptionInterface
      */
-    public function accounts(AccountRepositoryInterface $repository, CurrencyRepositoryInterface $currencyRepository): Response
+    public function accounts(AccountRepositoryInterface $repository): Response
     {
         $accounts = $repository->getAccountsByType(
             [AccountType::DEFAULT, AccountType::ASSET, AccountType::DEBT, AccountType::LOAN, AccountType::MORTGAGE, AccountType::CREDITCARD]
@@ -104,7 +103,6 @@ class JavascriptController extends Controller
      *
      * @param Request                     $request
      * @param AccountRepositoryInterface  $repository
-     * @param CurrencyRepositoryInterface $currencyRepository
      *
      * @return Response
      * @throws FireflyException
@@ -112,7 +110,7 @@ class JavascriptController extends Controller
      * @throws ContainerExceptionInterface
      * @throws NotFoundExceptionInterface
      */
-    public function variables(Request $request, AccountRepositoryInterface $repository, CurrencyRepositoryInterface $currencyRepository): Response
+    public function variables(Request $request, AccountRepositoryInterface $repository): Response
     {
         $account  = $repository->find((int)$request->get('account'));
         $currency = app('amount')->getDefaultCurrency();
@@ -147,11 +145,9 @@ class JavascriptController extends Controller
     /**
      * Bit of a hack but OK.
      *
-     * @param Request $request
-     *
      * @return Response
      */
-    public function variablesV2(Request $request): Response
+    public function variablesV2(): Response
     {
         /** @var Carbon $start */
         $start = clone session('start', today(config('app.timezone'))->startOfMonth());
diff --git a/app/Http/Controllers/PiggyBank/IndexController.php b/app/Http/Controllers/PiggyBank/IndexController.php
index fb0412e1cd..732bf18cd3 100644
--- a/app/Http/Controllers/PiggyBank/IndexController.php
+++ b/app/Http/Controllers/PiggyBank/IndexController.php
@@ -74,13 +74,11 @@ class IndexController extends Controller
      *
      * TODO very complicated function.
      *
-     * @param Request $request
-     *
      * @return Factory|View
      * @throws FireflyException
      * @throws JsonException
      */
-    public function index(Request $request)
+    public function index()
     {
         $this->cleanupObjectGroups();
         $this->piggyRepos->resetOrder();
diff --git a/app/Http/Controllers/Transaction/ShowController.php b/app/Http/Controllers/Transaction/ShowController.php
index cdc5615e79..83b205fe1b 100644
--- a/app/Http/Controllers/Transaction/ShowController.php
+++ b/app/Http/Controllers/Transaction/ShowController.php
@@ -76,13 +76,12 @@ class ShowController extends Controller
     }
 
     /**
-     * @param Request          $request
      * @param TransactionGroup $transactionGroup
      *
      * @return Factory|View
      * @throws FireflyException
      */
-    public function show(Request $request, TransactionGroup $transactionGroup)
+    public function show( TransactionGroup $transactionGroup)
     {
         /** @var TransactionJournal|null $first */
         $first  = $transactionGroup->transactionJournals()->first(['transaction_journals.*']);
@@ -105,7 +104,7 @@ class ShowController extends Controller
         $amounts  = $this->getAmounts($groupArray);
         $accounts = $this->getAccounts($groupArray);
 
-        foreach ($groupArray['transactions'] as $index => $transaction) {
+        foreach (array_keys($groupArray['transactions']) as $index) {
             $groupArray['transactions'][$index]['tags'] = $this->repository->getTagObjects(
                 $groupArray['transactions'][$index]['transaction_journal_id']
             );
diff --git a/app/Http/Controllers/Webhooks/IndexController.php b/app/Http/Controllers/Webhooks/IndexController.php
index eafc423f32..a5a868fd31 100644
--- a/app/Http/Controllers/Webhooks/IndexController.php
+++ b/app/Http/Controllers/Webhooks/IndexController.php
@@ -53,13 +53,9 @@ class IndexController extends Controller
     }
 
     /**
-     * Show debug info.
-     *
-     * @param Request $request
-     *
      * @return Factory|View
      */
-    public function index(Request $request)
+    public function index()
     {
         return view('webhooks.index');
     }
diff --git a/app/Http/Middleware/Authenticate.php b/app/Http/Middleware/Authenticate.php
index 2d867f52b8..388a566dda 100644
--- a/app/Http/Middleware/Authenticate.php
+++ b/app/Http/Middleware/Authenticate.php
@@ -83,6 +83,7 @@ class Authenticate
      * @return mixed
      * @throws FireflyException
      * @throws AuthenticationException
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     protected function authenticate($request, array $guards)
     {
diff --git a/app/Repositories/Budget/OperationsRepository.php b/app/Repositories/Budget/OperationsRepository.php
index 22ddc55675..3ee62ff3c0 100644
--- a/app/Repositories/Budget/OperationsRepository.php
+++ b/app/Repositories/Budget/OperationsRepository.php
@@ -324,21 +324,4 @@ class OperationsRepository implements OperationsRepositoryInterface
         return $array;
     }
 
-    /**
-     * For now, simply refer to whichever repository holds this function.
-     * TODO perhaps better in the future.
-     *
-     * @param Budget      $budget
-     * @param Carbon|null $start
-     * @param Carbon|null $end
-     *
-     * @return Collection
-     */
-    private function getBudgetLimits(Budget $budget, Carbon $start = null, Carbon $end = null): Collection
-    {
-        /** @var BudgetLimitRepositoryInterface $blRepository */
-        $blRepository = app(BudgetLimitRepositoryInterface::class);
-
-        return $blRepository->getBudgetLimits($budget, $start, $end);
-    }
 }
diff --git a/app/Support/Http/Api/ValidatesUserGroupTrait.php b/app/Support/Http/Api/ValidatesUserGroupTrait.php
index abc8666155..69041f154e 100644
--- a/app/Support/Http/Api/ValidatesUserGroupTrait.php
+++ b/app/Support/Http/Api/ValidatesUserGroupTrait.php
@@ -52,7 +52,7 @@ trait ValidatesUserGroupTrait
         $user = auth()->user();
         if (!$request->has('user_group_id')) {
             $group = $user->userGroup;
-            app('log')->debug(sprintf('validateUserGroup: no user group submitted, return default group #%d.', $group->id));
+            app('log')->debug(sprintf('validateUserGroup: no user group submitted, return default group #%d.', $group?->id));
             return $group;
         }
         $groupId = (int)$request->get('user_group_id');
diff --git a/app/Support/Http/Controllers/AugumentData.php b/app/Support/Http/Controllers/AugumentData.php
index 014a802749..4821aa45e8 100644
--- a/app/Support/Http/Controllers/AugumentData.php
+++ b/app/Support/Http/Controllers/AugumentData.php
@@ -36,6 +36,7 @@ use FireflyIII\Repositories\Budget\BudgetRepositoryInterface;
 use FireflyIII\Repositories\Budget\OperationsRepositoryInterface;
 use FireflyIII\Repositories\Category\CategoryRepositoryInterface;
 use FireflyIII\Support\CacheProperties;
+use FireflyIII\Support\Facades\Amount;
 use Illuminate\Support\Collection;
 
 /**
@@ -216,9 +217,20 @@ trait AugumentData
         /** @var BudgetLimit $entry */
         foreach ($set as $entry) {
             $currency = $entry->transactionCurrency;
+
+            if(null === $currency) {
+                $currency = app('amount')->getDefaultCurrency();
+            }
+
             // clone because these objects change each other.
             $currentStart = clone $entry->start_date;
-            $currentEnd   = clone $entry->end_date;
+            $currentEnd   = null === $entry->end_date ? null : clone $entry->end_date;
+
+            if(null === $currentEnd) {
+                $currentEnd = clone $currentStart;
+                $currentEnd->addMonth();
+            }
+
             $expenses     = $opsRepository->sumExpenses($currentStart, $currentEnd, null, $budgetCollection, $currency);
             $spent        = $expenses[$currency->id]['sum'] ?? '0';
             $entry->spent = $spent;
diff --git a/app/Support/Http/Controllers/GetConfigurationData.php b/app/Support/Http/Controllers/GetConfigurationData.php
index bb286efeaa..eebadefb10 100644
--- a/app/Support/Http/Controllers/GetConfigurationData.php
+++ b/app/Support/Http/Controllers/GetConfigurationData.php
@@ -220,9 +220,9 @@ trait GetConfigurationData
     protected function verifyRecurringCronJob(): void
     {
         $config   = app('fireflyconfig')->get('last_rt_job', 0);
-        $lastTime = (int)$config->data;
+        $lastTime = (int)$config?->data;
         $now      = time();
-        app('log')->debug(sprintf('verifyRecurringCronJob: last time is %d ("%s"), now is %d', $lastTime, $config->data, $now));
+        app('log')->debug(sprintf('verifyRecurringCronJob: last time is %d ("%s"), now is %d', $lastTime, $config?->data, $now));
         if (0 === $lastTime) {
             request()->session()->flash('info', trans('firefly.recurring_never_cron'));
 
diff --git a/app/Support/Http/Controllers/ModelInformation.php b/app/Support/Http/Controllers/ModelInformation.php
index 856a579320..7fce876f08 100644
--- a/app/Support/Http/Controllers/ModelInformation.php
+++ b/app/Support/Http/Controllers/ModelInformation.php
@@ -79,6 +79,7 @@ trait ModelInformation
         /** @var AccountRepositoryInterface $repository */
         $repository = app(AccountRepositoryInterface::class);
         // types of liability:
+        /** @var AccountType $debt */
         $debt           = $repository->getAccountTypeByType(AccountType::DEBT);
         $loan           = $repository->getAccountTypeByType(AccountType::LOAN);
         $mortgage       = $repository->getAccountTypeByType(AccountType::MORTGAGE);
diff --git a/app/Support/Http/Controllers/RenderPartialViews.php b/app/Support/Http/Controllers/RenderPartialViews.php
index 867393cdbb..13e3518d20 100644
--- a/app/Support/Http/Controllers/RenderPartialViews.php
+++ b/app/Support/Http/Controllers/RenderPartialViews.php
@@ -64,6 +64,10 @@ trait RenderPartialViews
         $accountRepos = app(AccountRepositoryInterface::class);
         $account      = $accountRepos->find((int)$attributes['accountId']);
 
+        if(null === $budget || null === $account) {
+            throw new FireflyException('Could not render popup.report.balance-amount because budget or account is null.');
+        }
+
         $journals = $popupHelper->balanceForBudget($budget, $account, $attributes);
 
         try {
@@ -330,7 +334,7 @@ trait RenderPartialViews
             if ('user_action' !== $entry->trigger_type) {
                 $count = ($index + 1);
                 try {
-                    $rootOperator = OperatorQuerySearch::getRootOperator($entry->trigger_type);
+                    $rootOperator = OperatorQuerySearch::getRootOperator((string) $entry->trigger_type);
                     if (str_starts_with($rootOperator, '-')) {
                         $rootOperator = substr($rootOperator, 1);
                     }
@@ -340,7 +344,7 @@ trait RenderPartialViews
                             'oldTrigger'    => $rootOperator,
                             'oldValue'      => $entry->trigger_value,
                             'oldChecked'    => $entry->stop_processing,
-                            'oldProhibited' => str_starts_with($entry->trigger_type, '-'),
+                            'oldProhibited' => str_starts_with((string) $entry->trigger_type, '-'),
                             'count'         => $count,
                             'triggers'      => $triggers,
                         ]
diff --git a/app/Support/Repositories/UserGroup/UserGroupTrait.php b/app/Support/Repositories/UserGroup/UserGroupTrait.php
index 9db484dc58..9c659a6a3e 100644
--- a/app/Support/Repositories/UserGroup/UserGroupTrait.php
+++ b/app/Support/Repositories/UserGroup/UserGroupTrait.php
@@ -63,11 +63,15 @@ trait UserGroupTrait
      * @param Authenticatable|User|null $user
      *
      * @return void
+     * @throws FireflyException
      */
     public function setUser(Authenticatable | User | null $user): void
     {
         if ($user instanceof User) {
             $this->user      = $user;
+            if(null === $user->userGroup) {
+                throw new FireflyException(sprintf('User #%d has no user group.', $user->id));
+            }
             $this->userGroup = $user->userGroup;
         }
     }
diff --git a/app/Support/Request/ChecksLogin.php b/app/Support/Request/ChecksLogin.php
index 90ac3207ee..7c215e77a6 100644
--- a/app/Support/Request/ChecksLogin.php
+++ b/app/Support/Request/ChecksLogin.php
@@ -79,7 +79,7 @@ trait ChecksLogin
         $user = auth()->user();
         app('log')->debug('Now in getUserGroup()');
         /** @var UserGroup|null $userGroup */
-        $userGroup = $this->route()->parameter('userGroup');
+        $userGroup = $this->route()?->parameter('userGroup');
         if (null === $userGroup) {
             app('log')->debug('Request class has no userGroup parameter, but perhaps there is a parameter.');
             $userGroupId = (int)$this->get('user_group_id');
diff --git a/app/Support/Request/ConvertsDataTypes.php b/app/Support/Request/ConvertsDataTypes.php
index 00102adccc..ca2270189f 100644
--- a/app/Support/Request/ConvertsDataTypes.php
+++ b/app/Support/Request/ConvertsDataTypes.php
@@ -70,7 +70,7 @@ trait ConvertsDataTypes
         if (!is_scalar($entry)) {
             return '';
         }
-        return $this->clearString((string)$entry, false);
+        return (string) $this->clearString((string)$entry, false);
     }
 
     /**
@@ -199,7 +199,7 @@ trait ConvertsDataTypes
      */
     public function stringWithNewlines(string $field): string
     {
-        return $this->clearString((string)($this->get($field) ?? ''));
+        return (string) $this->clearString((string)($this->get($field) ?? ''));
     }
 
     /**
@@ -255,7 +255,7 @@ trait ConvertsDataTypes
      */
     protected function convertDateTime(?string $string): ?Carbon
     {
-        $value = $this->get($string);
+        $value = $this->get((string)$string);
         if (null === $value) {
             return null;
         }
diff --git a/app/Validation/FireflyValidator.php b/app/Validation/FireflyValidator.php
index c8b246e194..d2a290618a 100644
--- a/app/Validation/FireflyValidator.php
+++ b/app/Validation/FireflyValidator.php
@@ -36,7 +36,6 @@ use FireflyIII\Repositories\Bill\BillRepositoryInterface;
 use FireflyIII\Repositories\Budget\BudgetRepositoryInterface;
 use FireflyIII\Repositories\PiggyBank\PiggyBankRepositoryInterface;
 use FireflyIII\Services\Password\Verifier;
-use FireflyIII\Support\Facades\Preferences;
 use FireflyIII\Support\ParseDateString;
 use FireflyIII\TransactionRules\Triggers\TriggerInterface;
 use FireflyIII\User;
@@ -49,6 +48,7 @@ use ValueError;
 
 /**
  * Class FireflyValidator.
+ * TODO all of these validations must become separate classes.
  */
 class FireflyValidator extends Validator
 {
@@ -60,6 +60,7 @@ class FireflyValidator extends Validator
      * @throws IncompatibleWithGoogleAuthenticatorException
      * @throws InvalidCharactersException
      * @throws SecretKeyTooShortException
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function validate2faCode($attribute, $value): bool
     {
@@ -73,18 +74,18 @@ class FireflyValidator extends Validator
         }
         $secretPreference = app('preferences')->get('temp-mfa-secret');
         $secret           = $secretPreference?->data ?? '';
-        if(is_array($secret)) {
+        if (is_array($secret)) {
             $secret = '';
         }
 
-        return (bool) Google2FA::verifyKey((string) $secret, $value);
+        return (bool)Google2FA::verifyKey((string)$secret, $value);
     }
 
     /**
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateBelongsToUser($attribute, $value, $parameters): bool
@@ -102,7 +103,7 @@ class FireflyValidator extends Validator
     /**
      * @param mixed $attribute
      * @param mixed $value
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateBic($attribute, $value): bool
@@ -122,7 +123,7 @@ class FireflyValidator extends Validator
     /**
      * @param mixed $attribute
      * @param mixed $value
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateIban(mixed $attribute, mixed $value): bool
@@ -186,7 +187,7 @@ class FireflyValidator extends Validator
         $value   = strtoupper($value);
 
         // replace characters outside of ASCI range.
-        $value   = (string) iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $value);
+        $value   = (string)iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $value);
         $search  = [' ', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'];
         $replace = [
             '',
@@ -228,7 +229,8 @@ class FireflyValidator extends Validator
         }
         try {
             $checksum = bcmod($iban, '97');
-        } catch (ValueError $e) { /** @phpstan-ignore-line */
+        } catch (ValueError $e) {
+            /** @phpstan-ignore-line */
             $message = sprintf('Could not validate IBAN check value "%s" (IBAN "%s")', $iban, $value);
             app('log')->error($message);
             app('log')->error($e->getTraceAsString());
@@ -243,7 +245,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateLess($attribute, $value, $parameters): bool
@@ -258,7 +260,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateMore($attribute, $value, $parameters): bool
@@ -273,7 +275,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateMustExist($attribute, $value, $parameters): bool
@@ -444,7 +446,7 @@ class FireflyValidator extends Validator
     /**
      * @param mixed $attribute
      * @param mixed $value
-     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      * @return bool
      */
     public function validateSecurePassword($attribute, $value): bool
@@ -467,6 +469,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -512,7 +515,7 @@ class FireflyValidator extends Validator
         if (!array_key_exists('user_id', $this->data)) {
             return false;
         }
-        
+
         /** @var User $user */
         $user  = User::find($this->data['user_id']);
         $type  = AccountType::find($this->data['account_type_id'])->first();
@@ -624,6 +627,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -676,10 +680,11 @@ class FireflyValidator extends Validator
     /**
      * @param string|null $attribute
      * @param string|null $value
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
-    public function validateUniqueCurrencyCode(string|null $attribute, string|null $value): bool
+    public function validateUniqueCurrencyCode(string | null $attribute, string | null $value): bool
     {
         return $this->validateUniqueCurrency('code', (string)$attribute, (string)$value);
     }
@@ -688,6 +693,7 @@ class FireflyValidator extends Validator
      * @param string $field
      * @param string $attribute
      * @param string $value
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -702,7 +708,7 @@ class FireflyValidator extends Validator
      *
      * @return bool
      */
-    public function validateUniqueCurrencyName(string|null $attribute, string|null $value): bool
+    public function validateUniqueCurrencyName(string | null $attribute, string | null $value): bool
     {
         return $this->validateUniqueCurrency('name', (string)$attribute, (string)$value);
     }
@@ -713,7 +719,7 @@ class FireflyValidator extends Validator
      *
      * @return bool
      */
-    public function validateUniqueCurrencySymbol(string|null $attribute, string|null $value): bool
+    public function validateUniqueCurrencySymbol(string | null $attribute, string | null $value): bool
     {
         return $this->validateUniqueCurrency('symbol', (string)$attribute, (string)$value);
     }
@@ -722,6 +728,7 @@ class FireflyValidator extends Validator
      * @param mixed $value
      * @param mixed $parameters
      * @param mixed $something
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -777,6 +784,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -809,6 +817,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -830,6 +839,7 @@ class FireflyValidator extends Validator
      * @param mixed $attribute
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
@@ -849,6 +859,7 @@ class FireflyValidator extends Validator
     /**
      * @param mixed $value
      * @param mixed $parameters
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return bool
      */
diff --git a/app/Validation/TransactionValidation.php b/app/Validation/TransactionValidation.php
index 1e69266de1..c5b086e6f4 100644
--- a/app/Validation/TransactionValidation.php
+++ b/app/Validation/TransactionValidation.php
@@ -488,7 +488,7 @@ trait TransactionValidation
      */
     private function getTransactionType(TransactionGroup $group, array $transactions): string
     {
-        return $transactions[0]['type'] ?? strtolower($group->transactionJournals()->first()->transactionType->type);
+        return $transactions[0]['type'] ?? strtolower((string) $group->transactionJournals()->first()?->transactionType->type);
     }
 
     /**
@@ -502,13 +502,13 @@ trait TransactionValidation
         if (1 === $transactionGroup->transactionJournals->count()) {
             $journal = $transactionGroup->transactionJournals->first();
 
-            return $journal->transactions()->where('amount', '<', 0)->first()->account;
+            return $journal?->transactions()->where('amount', '<', 0)->first()?->account;
         }
         /** @var TransactionJournal $journal */
         foreach ($transactionGroup->transactionJournals as $journal) {
             $journalId = (int)($transaction['transaction_journal_id'] ?? 0);
             if ($journal->id === $journalId) {
-                return $journal->transactions()->where('amount', '<', 0)->first()->account;
+                return $journal->transactions()->where('amount', '<', 0)->first()?->account;
             }
         }
 
@@ -785,7 +785,7 @@ trait TransactionValidation
         }
         /** @var Transaction|null $destination */
         $destination = Transaction::where('transaction_journal_id', $journalId)->where('amount', '>', 0)->with(['account'])->first();
-        if (null !== $source) {
+        if (null !== $destination) {
             $return['destination_id']   = $destination->account_id;
             $return['destination_name'] = $destination->account->name;
         }