Added post searching by date

TODO

@@ -37,9 +37,6 @@ everything related to posts:
             - fav:3..5
             - score:3..5
             - tag:3..5
-            - date:today
-            - date:yesterday
-            - date:yyyy[-mm[-dd]]..yyyy[-mm[-dd]]
             - filesize:3K..5M
             - imgsize:huge/large/medium/small
             - hash:postName

src/SearchServices/Filters/PostFilter.php

@@ -5,4 +5,5 @@ class PostFilter extends BasicFilter implements IFilter
 {
 	const REQUIREMENT_TAG = 'tag';
 	const REQUIREMENT_ID = 'id';
+	const REQUIREMENT_DATE = 'uploadTime';
 }

src/SearchServices/Parsers/PostSearchParser.php

@@ -27,6 +27,35 @@ class PostSearchParser extends AbstractSearchParser
 			$requirement->setNegated($token->isNegated());
 			$filter->addRequirement($requirement);
 		}
+
+		elseif ($token->getKey() === 'date')
+		{
+			if (substr_count($token->getValue(), '..') === 1)
+			{
+				list ($dateMin, $dateMax) = explode('..', $token->getValue());
+				$timeMin = $this->dateToTime($dateMin)[0];
+				$timeMax = $this->dateToTime($dateMax)[1];
+			}
+			else
+			{
+				$date = $token->getValue();
+				list ($timeMin, $timeMax) = $this->dateToTime($date);
+			}
+
+			$finalString = '';
+			if ($timeMin)
+				$finalString .= date('c', $timeMin);
+			$finalString .= '..';
+			if ($timeMax)
+				$finalString .= date('c', $timeMax);
+
+			$requirement = new \Szurubooru\SearchServices\Requirements\Requirement();
+			$requirement->setType(\Szurubooru\SearchServices\Filters\PostFilter::REQUIREMENT_DATE);
+			$requirement->setValue($this->createRequirementValue($finalString, self::ALLOW_RANGES));
+			$requirement->setNegated($token->isNegated());
+			$filter->addRequirement($requirement);
+		}
+
 		else
 		{
 			throw new \BadMethodCallException('Not supported');
@@ -37,4 +66,48 @@ class PostSearchParser extends AbstractSearchParser
 	{
 		throw new \BadMethodCallException('Not supported');
 	}
+
+	private function dateToTime($value)
+	{
+		$value = strtolower(trim($value));
+		if (!$value)
+		{
+			return null;
+		}
+		elseif ($value === 'today')
+		{
+			$timeMin = mktime(0, 0, 0);
+			$timeMax = mktime(24, 0, -1);
+		}
+		elseif ($value === 'yesterday')
+		{
+			$timeMin = mktime(-24, 0, 0);
+			$timeMax = mktime(0, 0, -1);
+		}
+		elseif (preg_match('/^(\d{4})$/', $value, $matches))
+		{
+			$year = intval($matches[1]);
+			$timeMin = mktime(0, 0, 0, 1, 1, $year);
+			$timeMax = mktime(0, 0, -1, 1, 1, $year + 1);
+		}
+		elseif (preg_match('/^(\d{4})-(\d{1,2})$/', $value, $matches))
+		{
+			$year = intval($matches[1]);
+			$month = intval($matches[2]);
+			$timeMin = mktime(0, 0, 0, $month, 1, $year);
+			$timeMax = mktime(0, 0, -1, $month + 1, 1, $year);
+		}
+		elseif (preg_match('/^(\d{4})-(\d{1,2})-(\d{1,2})$/', $value, $matches))
+		{
+			$year = intval($matches[1]);
+			$month = intval($matches[2]);
+			$day = intval($matches[3]);
+			$timeMin = mktime(0, 0, 0, $month, $day, $year);
+			$timeMax = mktime(0, 0, -1, $month, $day + 1, $year);
+		}
+		else
+			throw new \Exception('Invalid date format: ' . $value);
+
+		return [$timeMin, $timeMax];
+	}
 }