refactor how Log Viewer timezone is resolved

src/Facades/LogViewer.php

@@ -15,6 +15,7 @@
  * @see \Opcodes\LogViewer\LogViewerService
  *
  * @method static string version()
+ * @method static string timezone()
  * @method static bool assetsAreCurrent()
  * @method static bool supportsHostsFeature()
  * @method static void resolveHostsUsing(callable $callback)

src/LogViewerService.php

@@ -19,11 +19,23 @@ class LogViewerService
     public static string $logFileClass = LogFile::class;
     public static string $logReaderClass = IndexedLogReader::class;
     protected ?Collection $_cachedFiles = null;
+    protected string $_cachedTimezone;
     protected mixed $authCallback;
     protected int $maxLogSizeToDisplay = self::DEFAULT_MAX_LOG_SIZE_TO_DISPLAY;
     protected mixed $hostsResolver;
     protected string $layout = 'log-viewer::index';
 
+    public function timezone(): string
+    {
+        if (! isset($this->_cachedTimezone)) {
+            $this->_cachedTimezone = config('log-viewer.timezone')
+                ?? config('app.timezone')
+                ?? 'UTC';
+        }
+
+        return $this->_cachedTimezone;
+    }
+
     protected function getLaravelLogFilePaths(): array
     {
         // Because we'll use the base path as a parameter for `glob`, we should escape any

src/Logs/HorizonLog.php

@@ -3,6 +3,7 @@
 namespace Opcodes\LogViewer\Logs;
 
 use Opcodes\LogViewer\Exceptions\SkipLineException;
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\HorizonStatusLevel;
 
 class HorizonLog extends Log
@@ -20,8 +21,7 @@ class HorizonLog extends Log
     protected function fillMatches(array $matches = []): void
     {
         $datetime = $this->parseDateTime($matches['datetime'] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches['level'];
         $this->message = $matches['message'];

src/Logs/HorizonOldLog.php

@@ -2,6 +2,7 @@
 
 namespace Opcodes\LogViewer\Logs;
 
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\HorizonStatusLevel;
 
 class HorizonOldLog extends Log
@@ -19,8 +20,7 @@ class HorizonOldLog extends Log
     protected function fillMatches(array $matches = []): void
     {
         $datetime = static::parseDateTime($matches['datetime'] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches['level'];
         $this->message = $matches['message'];

src/Logs/HttpAccessLog.php

@@ -4,6 +4,7 @@
 
 use Carbon\CarbonInterface;
 use Illuminate\Support\Carbon;
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\HttpStatusCodeLevel;
 
 class HttpAccessLog extends Log
@@ -35,8 +36,7 @@ protected function fillMatches(array $matches = []): void
         ];
 
         $datetime = static::parseDateTime($matches['datetime'] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches['status_code'] ?? null;
         $this->message = sprintf(

src/Logs/HttpApacheErrorLog.php

@@ -4,6 +4,7 @@
 
 use Carbon\CarbonInterface;
 use Illuminate\Support\Carbon;
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\LaravelLogLevel;
 
 class HttpApacheErrorLog extends Log
@@ -15,8 +16,7 @@ class HttpApacheErrorLog extends Log
     protected function fillMatches(array $matches = []): void
     {
         $datetime = static::parseDateTime($matches['datetime'] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches['level'] ?? null;
         $this->message = $matches['message'] ?? null;

src/Logs/HttpNginxErrorLog.php

@@ -4,6 +4,7 @@
 
 use Carbon\CarbonInterface;
 use Illuminate\Support\Carbon;
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\NginxStatusLevel;
 
 class HttpNginxErrorLog extends Log
@@ -15,8 +16,7 @@ class HttpNginxErrorLog extends Log
     protected function fillMatches(array $matches = []): void
     {
         $datetime = static::parseDateTime($matches['datetime'] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches['level'] ?? null;
         $this->message = $matches['errormessage'] ?? null;

src/Logs/LaravelLog.php

@@ -38,9 +38,7 @@ protected function parseText(array &$matches = []): void
 
         preg_match(static::regexPattern(), array_shift($firstLineSplit), $matches);
 
-        $this->datetime = Carbon::parse($matches[1])?->setTimezone(
-            config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC'
-        );
+        $this->datetime = Carbon::parse($matches[1])?->setTimezone(LogViewer::timezone());
 
         // $matches[2] contains microseconds, which is already handled
         // $matches[3] contains timezone offset, which is already handled

src/Logs/Log.php

@@ -4,6 +4,7 @@
 
 use Carbon\CarbonInterface;
 use Illuminate\Support\Carbon;
+use Opcodes\LogViewer\Facades\LogViewer;
 use Opcodes\LogViewer\LogLevels\LaravelLogLevel;
 use Opcodes\LogViewer\LogLevels\LevelInterface;
 
@@ -68,8 +69,7 @@ public static function matches(string $text, ?int &$timestamp = null, ?string &$
         if ($result) {
             try {
                 $datetime = static::parseDateTime($matches[static::$regexDatetimeKey] ?? null);
-                $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-                $timestamp = $datetime?->setTimezone($timezone)->timestamp;
+                $timestamp = $datetime?->timestamp;
 
                 $level = $matches[static::$regexLevelKey] ?? '';
             } catch (\Exception $exception) {
@@ -108,8 +108,7 @@ protected function parseText(array &$matches = []): void
     protected function fillMatches(array $matches = []): void
     {
         $datetime = static::parseDateTime($matches[static::$regexDatetimeKey] ?? null);
-        $timezone = config('log-viewer.timezone', config('app.timezone', 'UTC')) ?? 'UTC';
-        $this->datetime = $datetime?->setTimezone($timezone);
+        $this->datetime = $datetime?->setTimezone(LogViewer::timezone());
 
         $this->level = $matches[static::$regexLevelKey] ?? null;
         $this->message = trim($matches[static::$regexMessageKey] ?? null);

tests/Feature/LogViewerTest.php

@@ -35,3 +35,22 @@
     assertContains('laravel.log', $fileNames);
     assertContains('other.log', $fileNames);
 });
+
+it('can get the timezone', function () {
+    config()->set('log-viewer.timezone', 'Europe/Vilnius');
+
+    expect(LogViewer::timezone())->toBe('Europe/Vilnius');
+});
+
+it('defaults to the app timezone', function () {
+    config()->set('app.timezone', 'Europe/Vilnius');
+
+    expect(LogViewer::timezone())->toBe('Europe/Vilnius');
+});
+
+it('defaults to UTC if no timezone is set anywhere', function () {
+    config()->set('app.timezone', null);
+    config()->set('log-viewer.timezone', null);
+
+    expect(LogViewer::timezone())->toBe('UTC');
+});