Fixed all problems related to strict types.

app/Helpers/Csv/Data.php

@@ -58,7 +58,7 @@ class Data
      */
     public function getCsvFileContent()
     {
-        return $this->csvFileContent;
+        return $this->csvFileContent ?? '';
     }
 
     /**
@@ -171,7 +171,7 @@ class Data
      */
     public function getReader()
     {
-        if (strlen($this->csvFileContent) === 0) {
+        if (!is_null($this->csvFileContent) && strlen($this->csvFileContent) === 0) {
             $this->loadCsvFile();
         }
 

app/Helpers/Report/BalanceReportHelper.php

@@ -108,7 +108,7 @@ class BalanceReportHelper implements BalanceReportHelperInterface
                     return $model->account_id == $account->id && $model->budget_id == $budget->id;
                 }
             );
-            $spent = 0;
+            $spent = '0';
             if (!is_null($entry->first())) {
                 $spent = $entry->first()->spent;
             }

app/Http/Controllers/Chart/BudgetController.php

@@ -132,7 +132,7 @@ class BudgetController extends Controller
             /*
              * Sum of expenses on this day:
              */
-            $amount = round(bcadd($amount, $sum), 2);
+            $amount = round(bcadd(strval($amount), $sum), 2);
             $entries->push([clone $start, $amount]);
             $start->addDay();
         }

app/Http/Controllers/Chart/ReportController.php

@@ -126,24 +126,19 @@ class ReportController extends Controller
      *
      * @return array
      */
-    protected function singleYearInOutSummarized(array $earned, array $spent, Carbon $start, Carbon $end)
+    protected function multiYearInOut(array $earned, array $spent, Carbon $start, Carbon $end)
     {
-        bcscale(2);
+        $entries = new Collection;
-        $income  = '0';
-        $expense = '0';
-        $count   = 0;
         while ($start < $end) {
-            $date           = $start->format('Y-m');
-            $currentIncome  = $earned[$date] ?? 0;
-            $currentExpense = isset($spent[$date]) ? ($spent[$date] * -1) : 0;
-            $income         = bcadd($income, $currentIncome);
-            $expense        = bcadd($expense, $currentExpense);
 
-            $count++;
+            $incomeSum  = $this->pluckFromArray($start->year, $earned);
-            $start->addMonth();
+            $expenseSum = $this->pluckFromArray($start->year, $spent) * -1;
+
+            $entries->push([clone $start, $incomeSum, $expenseSum]);
+            $start->addYear();
         }
 
-        $data = $this->generator->yearInOutSummarized($income, $expense, $count);
+        $data = $this->generator->multiYearInOut($entries);
 
         return $data;
     }
@@ -179,28 +174,23 @@ class ReportController extends Controller
     }
 
     /**
-     * @param array  $earned
+     * @param int   $year
-     * @param array  $spent
+     * @param array $set
-     * @param Carbon $start
-     * @param Carbon $end
      *
-     * @return array
+     * @return string
      */
-    protected function multiYearInOut(array $earned, array $spent, Carbon $start, Carbon $end)
+    protected function pluckFromArray($year, array $set)
     {
-        $entries = new Collection;
+        bcscale(2);
-        while ($start < $end) {
+        $sum = '0';
-
+        foreach ($set as $date => $amount) {
-            $incomeSum  = $this->pluckFromArray($start->year, $earned);
+            if (substr($date, 0, 4) == $year) {
-            $expenseSum = $this->pluckFromArray($start->year, $spent) * -1;
+                $sum = bcadd($sum, $amount);
-
+            }
-            $entries->push([clone $start, $incomeSum, $expenseSum]);
-            $start->addYear();
         }
 
-        $data = $this->generator->multiYearInOut($entries);
+        return $sum;
 
-        return $data;
     }
 
     /**
@@ -232,22 +222,32 @@ class ReportController extends Controller
     }
 
     /**
-     * @param int   $year
+     * @param array  $earned
-     * @param array $set
+     * @param array  $spent
+     * @param Carbon $start
+     * @param Carbon $end
      *
-     * @return string
+     * @return array
      */
-    protected function pluckFromArray($year, array $set)
+    protected function singleYearInOutSummarized(array $earned, array $spent, Carbon $start, Carbon $end)
     {
         bcscale(2);
-        $sum = '0';
+        $income  = '0';
-        foreach ($set as $date => $amount) {
+        $expense = '0';
-            if (substr($date, 0, 4) == $year) {
+        $count   = 0;
-                $sum = bcadd($sum, $amount);
+        while ($start < $end) {
-            }
+            $date           = $start->format('Y-m');
+            $currentIncome  = $earned[$date] ?? '0';
+            $currentExpense = isset($spent[$date]) ? bcmul($spent[$date], '-1') : '0';
+            $income         = bcadd($income, $currentIncome);
+            $expense        = bcadd($expense, $currentExpense);
+
+            $count++;
+            $start->addMonth();
         }
 
-        return $sum;
+        $data = $this->generator->yearInOutSummarized($income, $expense, $count);
 
+        return $data;
     }
 }

app/Http/Controllers/TagController.php

@@ -242,10 +242,11 @@ class TagController extends Controller
             $longitude = null;
             $zoomLevel = null;
         }
+        $date = $request->get('date') ?? '';
 
         $data = [
             'tag'         => $request->get('tag'),
-            'date'        => strlen($request->get('date')) > 0 ? new Carbon($request->get('date')) : null,
+            'date'        => strlen($date) > 0 ? new Carbon($date) : null,
             'description' => strlen($request->get('description')) > 0 ? $request->get('description') : '',
             'latitude'    => $latitude,
             'longitude'   => $longitude,
@@ -287,10 +288,12 @@ class TagController extends Controller
             $longitude = null;
             $zoomLevel = null;
         }
+        $date = $request->get('date') ?? '';
+
 
         $data = [
             'tag'         => $request->get('tag'),
-            'date'        => strlen($request->get('date')) > 0 ? new Carbon($request->get('date')) : null,
+            'date'        => strlen($date) > 0 ? new Carbon($date) : null,
             'description' => strlen($request->get('description')) > 0 ? $request->get('description') : '',
             'latitude'    => $latitude,
             'longitude'   => $longitude,

app/Http/Requests/JournalFormRequest.php

@@ -31,6 +31,7 @@ class JournalFormRequest extends Request
      */
     public function getJournalData()
     {
+        $tags = $this->get('tags') ?? '';
         return [
             'what'                      => $this->get('what'),
             'description'               => $this->get('description'),
@@ -45,7 +46,7 @@ class JournalFormRequest extends Request
             'date'                      => new Carbon($this->get('date')),
             'budget_id'                 => intval($this->get('budget_id')),
             'category'                  => $this->get('category'),
-            'tags'                      => explode(',', $this->get('tags')),
+            'tags'                      => explode(',', $tags),
         ];
     }
 

app/Repositories/Account/AccountRepository.php

@@ -253,10 +253,10 @@ class AccountRepository implements AccountRepositoryInterface
             function (Account $account) use ($start, $end) {
                 $account->startBalance = Steam::balance($account, $start, true);
                 $account->endBalance   = Steam::balance($account, $end, true);
-                $account->piggyBalance = 0;
+                $account->piggyBalance = '0';
                 /** @var PiggyBank $piggyBank */
                 foreach ($account->piggyBanks as $piggyBank) {
-                    $account->piggyBalance += $piggyBank->currentRelevantRep()->currentamount;
+                    $account->piggyBalance = bcadd($piggyBank->currentRelevantRep()->currentamount, $account->piggyBalance);
                 }
                 // sum of piggy bank amounts on this account:
                 // diff between endBalance and piggyBalance.

app/Repositories/Bill/BillRepository.php

@@ -171,7 +171,8 @@ class BillRepository implements BillRepositoryInterface
                                   }
                                   )
                                   ->first([DB::Raw('SUM(`transactions`.`amount`) as `sum_amount`')]);
-                $amount = bcadd($amount, $paid->sum_amount);
+                $sumAmount = $paid->sum_amount ?? '0';
+                $amount    = bcadd($amount, $sumAmount);
             }
         }
 
@@ -205,7 +206,8 @@ class BillRepository implements BillRepositoryInterface
                                   }
                                   )
                                   ->first([DB::Raw('SUM(`transactions`.`amount`) as `sum_amount`')]);
-                $paidBill = bcadd($paid->sum_amount, $paidBill);
+                $sumAmount = $paid->sum_amount ?? '0';
+                $paidBill  = bcadd($sumAmount, $paidBill);
             }
             if ($paidBill == 0) {
                 $amount = bcadd($amount, $bill->expectedAmount);

app/Repositories/Shared/ComponentRepository.php

@@ -37,7 +37,7 @@ class ComponentRepository
                          ->whereIn('accounts.id', $ids)
                          ->after($start)
                          ->first([DB::raw('SUM(`transactions`.`amount`) as `journalAmount`')]);
-        $amount = $entry->journalAmount;
+        $amount = $entry->journalAmount ?? '0';
 
         return $amount;
     }

app/Support/Steam.php

@@ -23,7 +23,7 @@ class Steam
      * @param \Carbon\Carbon             $date
      * @param bool                       $ignoreVirtualBalance
      *
-     * @return float
+     * @return string
      */
     public function balance(Account $account, Carbon $date, $ignoreVirtualBalance = false)
     {
@@ -45,11 +45,11 @@ class Steam
         )->where('transaction_journals.date', '<=', $date->format('Y-m-d'))->sum('transactions.amount');
 
         if (!$ignoreVirtualBalance) {
-            $balance = bcadd($balance, $account->virtual_balance);
+            $balance = bcadd(strval($balance), $account->virtual_balance);
         }
-        $cache->store(round($balance, 2));
+        $cache->store($balance);
 
-        return round($balance, 2);
+        return $balance;
     }
 
     /**
@@ -177,14 +177,14 @@ class Steam
 
         if (!(strpos($string, 'k') === false)) {
             // has a K in it, remove the K and multiply by 1024.
-            $bytes = bcmul(rtrim($string, 'k'), 1024);
+            $bytes = bcmul(rtrim($string, 'k'), '1024');
 
             return intval($bytes);
         }
 
         if (!(strpos($string, 'm') === false)) {
             // has a M in it, remove the M and multiply by 1048576.
-            $bytes = bcmul(rtrim($string, 'm'), 1048576);
+            $bytes = bcmul(rtrim($string, 'm'),'1048576');
 
             return intval($bytes);
         }

app/Support/Twig/General.php

@@ -16,6 +16,7 @@ use Twig_SimpleFunction;
  * @codeCoverageIgnore
  *
  * Class TwigSupport
+ * @todo    these functions should be parameterized.
  *
  * @package FireflyIII\Support
  */
@@ -164,13 +165,14 @@ class General extends Twig_Extension
     }
 
     /**
+     *
      * @return Twig_SimpleFilter
      */
     protected function formatAmount()
     {
         return new Twig_SimpleFilter(
             'formatAmount', function ($string) {
-            $value = is_null($string) ? '0' : $string;
+            $value = is_null($string) ? '0' : strval($string);
 
             return app('amount')->format($value);
         }, ['is_safe' => ['html']]
@@ -184,7 +186,9 @@ class General extends Twig_Extension
     {
         return new Twig_SimpleFilter(
             'formatAmountPlain', function ($string) {
-            return app('amount')->format($string, false);
+            $value = is_null($string) ? '0' : strval($string);
+
+            return app('amount')->format($value, false);
         }, ['is_safe' => ['html']]
         );
     }