Reverse order and multiple log files handler

app/common/Controller/Logs.php

@@ -22,4 +22,21 @@ class Logs
         }
         return $view->render($response, 'logs.show', compact('log', 'levels'));
     }
+    public function getMore(ServerRequestInterface $request, ResponseInterface $response, View $view, Service $service, string $log_file, int $start = 0, int $amount = 100): ResponseInterface
+    {
+        $log = $service->get($log_file);
+
+        $logs = [];
+        foreach ($log->getLogs($start, $amount) as $l) {
+            $logs []= $l;
+        }
+        $logs = array_reverse($logs);
+        $total = $log->getTotal();
+        $response->getBody()->write(\Safe\json_encode([
+            'total' => $total,
+            'logs' => $logs
+        ]));
+        return $response->withStatus(200)
+            ->withHeader('Content-Type', 'application/json');
+    }
 }

app/common/Define/Log.php

@@ -0,0 +1,7 @@
+<?php
+namespace ProVM\Common\Define;
+
+interface Log
+{
+
+}

app/common/Define/Parser.php

@@ -0,0 +1,7 @@
+<?php
+namespace ProVM\Common\Define;
+
+interface Parser
+{
+    public function parse(string $content): Log;
+}

app/common/Implement/Parser.php

@@ -0,0 +1,27 @@
+<?php
+namespace ProVM\Common\Implement;
+
+use ProVM\Common\Define\Log;
+
+abstract class Parser implements \ProVM\Common\Define\Parser
+{
+    public function total(string $filename): int
+    {
+        try {
+            $fh = \Safe\fopen($filename, 'r');
+            $cnt = 0;
+            while(!feof($fh)) {
+                $line = fgets($fh);
+                $cnt ++;
+            }
+            fclose($fh);
+            return $cnt;
+        } catch (\Exception $e) {
+            return 0;
+        }
+    }
+    public function parse(string $content): Log
+    {
+        return new \ProVM\Logview\Log($content);
+    }
+}

app/common/Service/Logs.php

@@ -5,6 +5,8 @@ use DateTimeImmutable;
 use SplFileInfo;
 use Psr\Log\LoggerInterface;
 use ProVM\Logview\Log\File;
+use ProVM\Common\Define\Parser;
+use ProVM\Logview\Parser as Parsers;
 
 class Logs
 {
@@ -50,15 +52,31 @@ class Logs
         }
         return $output;
     }
+    public function getParser(string $filename): Parser
+    {
+        $map = [
+            Parsers\Access::class => '/(access.log)/',
+            Parsers\Error::class => '/(error.log)/',
+            Parsers\Monolog::class => '/(php-\d{4}-\d{2}-\d{2}.log)/',
+            Parsers\PHPDefault::class => '/(php_errors.log)/'
+        ];
+        foreach ($map as $class => $regex) {
+            if (\Safe\preg_match($regex, $filename) === 1) {
+                return new $class;
+            }
+        }
+        return new Parsers\Basic();
+    }
     public function get(string $log_file): File
     {
         $filename = implode(DIRECTORY_SEPARATOR, [$this->getFolder(), $log_file]);
         $file_info = new SplFileInfo($filename);
-        $content = \Safe\file_get_contents($filename);
+        $parser = $this->getParser($log_file);
         return (new File())
             ->setLogger($this->getLogger())
+            ->setParser($parser)
+            ->setFullname($filename)
             ->setFilename($log_file)
-            ->setDate((new DateTimeImmutable())->setTimestamp($file_info->getCTime()))
-            ->setContent($content);
+            ->setDate((new DateTimeImmutable())->setTimestamp($file_info->getCTime()));
     }
 }