Date Time Helper

packaged · Feb 16, 2017 · 2356a28 · 2356a28
1 parent 3c13584
commit 2356a28
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diff --git a/src/DateTimeHelper.php b/src/DateTimeHelper.php
@@ -0,0 +1,72 @@
+<?php
+namespace Packaged\Helpers;
+
+class DateTimeHelper
+{
+  /**
+   * @param string $inputDates e.g. "2017-01-02-2017-01-05,2017-03-01-04-01"
+   *
+   * @return array array of dates
+   */
+  public static function dateRange($inputDates)
+  {
+    $finalDates = [];
+    $dates = Strings::stringToRange($inputDates);
+    foreach($dates as $date)
+    {
+      if(strlen($date) > 10)
+      {
+        $dp = explode('-', $date);
+        $firstDate = implode('-', array_slice($dp, 0, 3));
+        $secondDate = null;
+        $sdp = array_slice($dp, 3);
+        if(!empty(implode("", $sdp)))
+        {
+          switch(count($sdp))
+          {
+            case 1:
+              $secondDate = implode('-', [$dp[0], $dp[1], $sdp[0]]);
+              break;
+            case 2:
+              $secondDate = implode('-', [$dp[0], $sdp[0], $sdp[1]]);
+              break;
+            case 3:
+              $secondDate = implode('-', [$sdp[0], $sdp[1], $sdp[2]]);
+              break;
+          }
+        }
+        if($secondDate == null)
+        {
+          $finalDates[] = $firstDate;
+        }
+        else
+        {
+          $firstTime = strtotime($firstDate);
+          $secondTime = strtotime($secondDate);
+
+          if($firstTime > $secondTime)
+          {
+            $tmp = $secondTime;
+            $secondTime = $firstTime;
+            $firstTime = $tmp;
+          }
+
+          if($firstTime > 0 && $secondTime > 0)
+          {
+            $currentTime = $firstTime;
+            while($currentTime <= $secondTime)
+            {
+              $finalDates[] = date("Y-m-d", $currentTime);
+              $currentTime += 86400;
+            }
+          }
+        }
+      }
+      else
+      {
+        $finalDates[] = $date;
+      }
+    }
+    return $finalDates;
+  }
+}
diff --git a/tests/DateTimeHelperTest.php b/tests/DateTimeHelperTest.php
@@ -0,0 +1,64 @@
+<?php
+
+class DateTimeHelperTest extends PHPUnit_Framework_TestCase
+{
+  public function testDate()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-01"
+    );
+    $this->assertEquals(["2017-01-01"], $dates);
+  }
+
+  public function testBasicDates()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-01,2017-02-02"
+    );
+    $this->assertEquals(["2017-01-01", "2017-02-02"], $dates);
+  }
+
+  public function testSameMonthRange()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-01-03"
+    );
+    $this->assertEquals(["2017-01-01", "2017-01-02", "2017-01-03"], $dates);
+  }
+
+  public function testSameYearRange()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-30-02-01"
+    );
+    $this->assertEquals(["2017-01-30", "2017-01-31", "2017-02-01"], $dates);
+  }
+
+  public function testRange()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-25-2017-01-29"
+    );
+    $this->assertEquals(
+      ["2017-01-25", "2017-01-26", "2017-01-27", "2017-01-28", "2017-01-29"],
+      $dates
+    );
+  }
+
+  public function testInverseDateRange()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-03-01"
+    );
+    $this->assertEquals(["2017-01-01", "2017-01-02", "2017-01-03"], $dates);
+  }
+
+  public function testInvalidDateRange()
+  {
+    $dates = \Packaged\Helpers\DateTimeHelper::dateRange(
+      "2017-01-03-"
+    );
+    $this->assertEquals(["2017-01-03"], $dates);
+  }
+
+}