Can now create recurring transactions. #1469

app/Rules/ValidRecurrenceRepetitionValue.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * ValidRecurrenceRepetitionValue.php
+ * Copyright (c) 2018 thegrumpydictator@gmail.com
+ *
+ * This file is part of Firefly III.
+ *
+ * Firefly III is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Firefly III is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Rules;
+
+
+use Carbon\Carbon;
+use Illuminate\Contracts\Validation\Rule;
+use InvalidArgumentException;
+
+/**
+ * Class ValidRecurrenceRepetitionValue
+ */
+class ValidRecurrenceRepetitionValue implements Rule
+{
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message(): string
+    {
+        return trans('validation.valid_recurrence_rep_type');
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string $attribute
+     * @param  mixed  $value
+     *
+     * @return bool
+     */
+    public function passes($attribute, $value): bool
+    {
+        $value = (string)$value;
+
+        if ($value === 'daily') {
+            return true;
+        }
+
+        if (0 === strpos($value, 'monthly')) {
+            $dayOfMonth = (int)substr($value, 8);
+
+            return $dayOfMonth > 0 && $dayOfMonth < 32;
+        }
+
+        //ndom,3,7
+        // nth x-day of the month.
+        if (0 === strpos($value, 'ndom')) {
+            $parameters = explode(',', substr($value, 5));
+            if (\count($parameters) !== 2) {
+                return false;
+            }
+            $nthDay    = (int)($parameters[0] ?? 0.0);
+            $dayOfWeek = (int)($parameters[1] ?? 0.0);
+            if ($nthDay < 1 || $nthDay > 5) {
+                return false;
+            }
+
+            return $dayOfWeek > 0 && $dayOfWeek < 8;
+        }
+
+        //weekly,7
+        if (0 === strpos($value, 'weekly')) {
+            $dayOfWeek = (int)substr($value, 7);
+
+            return $dayOfWeek > 0 && $dayOfWeek < 8;
+        }
+
+        //yearly,2018-01-01
+        if (0 === strpos($value, 'yearly')) {
+            // rest of the string must be valid date:
+            $dateString = substr($value, 7);
+            try {
+                $date = Carbon::createFromFormat('Y-m-d', $dateString);
+            } catch (InvalidArgumentException $e) {
+                return false;
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+}