From 463ef1ec543674c354713eed60c7ef24c8745006 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Wed, 5 Jul 2023 19:09:04 +0500
Subject: [PATCH 1/9] adding symfony cache

---
 composer.json              |  2 +-
 src/cache/DefaultCache.php | 33 +++++++++++++++++++++++----------
 tests/DefaultCacheTest.php | 11 ++++++-----
 3 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/composer.json b/composer.json
index 3db17d3..c5a1fbf 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         "php": ">=8.0",
         "ext-json": "*",
         "guzzlehttp/guzzle": "^6.3||^7.0",
-        "sabre/cache": "^1.0",
+        "symfony/cache": "^6.3",
         "symfony/http-foundation": "^6.2"
     },
     "require-dev": {
diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 3dd53b0..899c699 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -2,6 +2,10 @@
 
 namespace ipinfo\ipinfo\cache;
 
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Cache\ItemInterface;
+
 /**
  * Default implementation of the CacheInterface. Provides in-memory caching.
  */
@@ -14,9 +18,9 @@ class DefaultCache implements CacheInterface
     private $cache;
     private $element_queue;
 
-    public function __construct(int $maxsize, int $ttl)
+    public function __construct(FilesystemAdapter $cache, int $maxsize, int $ttl)
     {
-        $this->cache = new \Sabre\Cache\Memory();
+        $this->cache = $cache;
         $this->element_queue = array();
         $this->maxsize = $maxsize;
         $this->ttl = $ttl;
@@ -29,9 +33,15 @@ public function __construct(int $maxsize, int $ttl)
    */
     public function has(string $name)
     {
-        return $this->cache->has($name);
+        return $this->cache->get($name);
+    }
+
+    public function delete(string $name): bool
+    {
+        return $this->$cache->delete($name);
     }
 
+
   /**
    * Set the IP address key to the specified value.
    * @param string $ip_address IP address to cache data for.
@@ -39,11 +49,14 @@ public function has(string $name)
    */
     public function set(string $name, $value)
     {
-        if (!$this->cache->has($name)) {
-            $this->element_queue[] = $name;
-        }
-
-        $this->cache->set($name, $value, $this->ttl);
+        // The callable will only be executed on a cache miss.
+        $this->$cache->get($name, function (ItemInterface $item): string {
+            $item->expiresAfter($this->ttl);
+            // On chache miss update queue.
+            $this->$element_queue[] = $name;
+            
+            return $value;
+        });
 
         $this->manageSize();
     }
@@ -53,7 +66,7 @@ public function set(string $name, $value)
    * @param  string $ip_address IP address to lookup in cache.
    * @return mixed IP address data.
    */
-    public function get(string $name)
+    public function get(string $key, callable $callback, ?float $beta = null, ?array &$metadata = null): mixed
     {
         return $this->cache->get($name);
     }
@@ -66,7 +79,7 @@ private function manageSize()
         $overflow = count($this->element_queue) - $this->maxsize;
         if ($overflow > 0) {
             foreach (array_slice($this->element_queue, 0, $overflow) as $name) {
-                if ($this->cache->has($name)) {
+                if ($this->cache->get($name)) {
                     $this->cache->delete($name);
                 }
             }
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index 1e45563..ddd120f 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -3,13 +3,14 @@
 namespace ipinfo\ipinfo\tests;
 
 use ipinfo\ipinfo\cache\DefaultCache;
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use PHPUnit\Framework\TestCase;
 
 class DefaultCacheTest extends TestCase
 {
     public function testHasValue()
     {
-        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
         $key1 = 'test';
         $value1 = 'obama';
         $cache->set($key1, $value1);
@@ -24,7 +25,7 @@ public function testHasValue()
 
     public function testDoesNotHaveValue()
     {
-        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
         $key = 'test';
 
         $this->assertFalse($cache->has($key));
@@ -32,7 +33,7 @@ public function testDoesNotHaveValue()
 
     public function testGetValue()
     {
-        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
         $key1 = 'test';
         $value1 = 'obama';
         $cache->set($key1, $value1);
@@ -47,7 +48,7 @@ public function testGetValue()
 
     public function testMaxSizeExceeded()
     {
-        $cache = new DefaultCache($maxsize = 2, $ttl = 2);
+        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 2, $ttl = 2);
 
         $key1 = 'test';
         $value1 = 'obama';
@@ -70,7 +71,7 @@ public function testMaxSizeExceeded()
 
     public function testTimeToLiveExceeded()
     {
-        $cache = new DefaultCache($maxsize = 2, $ttl = 1);
+        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 2, $ttl = 1);
 
         $key = 'test';
         $value = 'obama';

From 69c3e50e06316e70de1492c89fd83ea0d322383a Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 09:50:00 +0500
Subject: [PATCH 2/9] has func fix and cache initialization

---
 src/cache/DefaultCache.php | 11 +++++------
 tests/DefaultCacheTest.php | 13 ++++++++-----
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 899c699..9b8bccb 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -18,9 +18,9 @@ class DefaultCache implements CacheInterface
     private $cache;
     private $element_queue;
 
-    public function __construct(FilesystemAdapter $cache, int $maxsize, int $ttl)
+    public function __construct(int $maxsize, int $ttl)
     {
-        $this->cache = $cache;
+        $this->cache = new FilesystemAdapter();
         $this->element_queue = array();
         $this->maxsize = $maxsize;
         $this->ttl = $ttl;
@@ -31,9 +31,9 @@ public function __construct(FilesystemAdapter $cache, int $maxsize, int $ttl)
    * @param  string  $ip_address IP address to lookup.
    * @return boolean Is the IP address data in the cache.
    */
-    public function has(string $name)
+    public function has(string $name): bool
     {
-        return $this->cache->get($name);
+        return $this->cache->hasItem($name);
     }
 
     public function delete(string $name): bool
@@ -41,7 +41,6 @@ public function delete(string $name): bool
         return $this->$cache->delete($name);
     }
 
-
   /**
    * Set the IP address key to the specified value.
    * @param string $ip_address IP address to cache data for.
@@ -52,7 +51,7 @@ public function set(string $name, $value)
         // The callable will only be executed on a cache miss.
         $this->$cache->get($name, function (ItemInterface $item): string {
             $item->expiresAfter($this->ttl);
-            // On chache miss update queue.
+            // On cache miss update queue.
             $this->$element_queue[] = $name;
             
             return $value;
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index ddd120f..edd1168 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -10,7 +10,7 @@ class DefaultCacheTest extends TestCase
 {
     public function testHasValue()
     {
-        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
         $key1 = 'test';
         $value1 = 'obama';
         $cache->set($key1, $value1);
@@ -19,13 +19,16 @@ public function testHasValue()
         $value2 = 'mccain';
         $cache->set($key2, $value2);
 
+        var_dump($cache->get($key1));
+        var_dump($cache->get($key2));
+
         $this->assertTrue($cache->has($key1));
         $this->assertTrue($cache->has($key2));
     }
 
     public function testDoesNotHaveValue()
     {
-        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
         $key = 'test';
 
         $this->assertFalse($cache->has($key));
@@ -33,7 +36,7 @@ public function testDoesNotHaveValue()
 
     public function testGetValue()
     {
-        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 4, $ttl = 2);
+        $cache = new DefaultCache($maxsize = 4, $ttl = 2);
         $key1 = 'test';
         $value1 = 'obama';
         $cache->set($key1, $value1);
@@ -48,7 +51,7 @@ public function testGetValue()
 
     public function testMaxSizeExceeded()
     {
-        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 2, $ttl = 2);
+        $cache = new DefaultCache($maxsize = 2, $ttl = 2);
 
         $key1 = 'test';
         $value1 = 'obama';
@@ -71,7 +74,7 @@ public function testMaxSizeExceeded()
 
     public function testTimeToLiveExceeded()
     {
-        $cache = new DefaultCache(new FilesystemAdapter(), $maxsize = 2, $ttl = 1);
+        $cache = new DefaultCache($maxsize = 2, $ttl = 1);
 
         $key = 'test';
         $value = 'obama';

From 6f586388f21f82f0d8214d75fc2218eafdc45677 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 13:44:37 +0500
Subject: [PATCH 3/9] updating interface

---
 src/cache/DefaultCache.php | 34 ++++++++++++++++------------------
 tests/DefaultCacheTest.php | 14 ++++++++++----
 2 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 9b8bccb..d17c590 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -3,7 +3,6 @@
 namespace ipinfo\ipinfo\cache;
 
 use Symfony\Component\Cache\Adapter\FilesystemAdapter;
-use Symfony\Contracts\Cache\CacheInterface;
 use Symfony\Contracts\Cache\ItemInterface;
 
 /**
@@ -36,11 +35,6 @@ public function has(string $name): bool
         return $this->cache->hasItem($name);
     }
 
-    public function delete(string $name): bool
-    {
-        return $this->$cache->delete($name);
-    }
-
   /**
    * Set the IP address key to the specified value.
    * @param string $ip_address IP address to cache data for.
@@ -48,16 +42,12 @@ public function delete(string $name): bool
    */
     public function set(string $name, $value)
     {
-        // The callable will only be executed on a cache miss.
-        $this->$cache->get($name, function (ItemInterface $item): string {
-            $item->expiresAfter($this->ttl);
-            // On cache miss update queue.
-            $this->$element_queue[] = $name;
-            
-            return $value;
+        $this->cache->get($name, function (ItemInterface $item) use ($name, $value) {
+            $item->set($value)->expiresAfter($this->ttl);
+            $this->element_queue[] = $name;
+            $this->manageSize();
+            return $item->get();
         });
-
-        $this->manageSize();
     }
 
   /**
@@ -65,9 +55,17 @@ public function set(string $name, $value)
    * @param  string $ip_address IP address to lookup in cache.
    * @return mixed IP address data.
    */
-    public function get(string $key, callable $callback, ?float $beta = null, ?array &$metadata = null): mixed
+    public function get(string $name)
     {
-        return $this->cache->get($name);
+        // return $this->cache->get($name);
+        // return $this->cache->get($name, function (ItemInterface $item) {
+        //     throw new \Exception('Cache item not found');
+        // });
+        if ($this->cache->hasItem($name)) {
+            return $this->cache->getItem($name)->get();
+        }
+    
+        throw new \Exception("Cache item not found for key: $name");
     }
 
   /**
@@ -78,7 +76,7 @@ private function manageSize()
         $overflow = count($this->element_queue) - $this->maxsize;
         if ($overflow > 0) {
             foreach (array_slice($this->element_queue, 0, $overflow) as $name) {
-                if ($this->cache->get($name)) {
+                if ($this->cache->hasItem($name)) {
                     $this->cache->delete($name);
                 }
             }
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index edd1168..0674f69 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -19,9 +19,6 @@ public function testHasValue()
         $value2 = 'mccain';
         $cache->set($key2, $value2);
 
-        var_dump($cache->get($key1));
-        var_dump($cache->get($key2));
-
         $this->assertTrue($cache->has($key1));
         $this->assertTrue($cache->has($key2));
     }
@@ -29,7 +26,7 @@ public function testHasValue()
     public function testDoesNotHaveValue()
     {
         $cache = new DefaultCache($maxsize = 4, $ttl = 2);
-        $key = 'test';
+        $key = 'ink';
 
         $this->assertFalse($cache->has($key));
     }
@@ -45,6 +42,15 @@ public function testGetValue()
         $value2 = 'mccain';
         $cache->set($key2, $value2);
 
+        // $retrievedValue1 = $cache->get($key1);
+        // $retrievedValue2 = $cache->get($key2);
+    
+        // var_dump($retrievedValue1->get());
+        // var_dump($retrievedValue2->get());
+
+        // $this->assertEquals($value1, $retrievedValue1);
+        // $this->assertEquals($value2, $retrievedValue2);
+
         $this->assertEquals($value1, $cache->get($key1));
         $this->assertEquals($value2, $cache->get($key2));
     }

From 7ca74c9e8f987ad1d4372083db7295e3392d05b1 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 14:44:44 +0500
Subject: [PATCH 4/9] fixed issues

---
 src/cache/DefaultCache.php | 20 ++++++++++----------
 tests/DefaultCacheTest.php |  9 ---------
 2 files changed, 10 insertions(+), 19 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index d17c590..210a903 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -42,12 +42,16 @@ public function has(string $name): bool
    */
     public function set(string $name, $value)
     {
-        $this->cache->get($name, function (ItemInterface $item) use ($name, $value) {
-            $item->set($value)->expiresAfter($this->ttl);
+        if (!in_array($name, $this->element_queue)) {
             $this->element_queue[] = $name;
-            $this->manageSize();
+        }
+
+        $this->cache->get($name, function (ItemInterface $item) use  ($value) {
+            $item->set($value)->expiresAfter($this->ttl);
             return $item->get();
         });
+
+        $this->manageSize();
     }
 
   /**
@@ -57,15 +61,11 @@ public function set(string $name, $value)
    */
     public function get(string $name)
     {
-        // return $this->cache->get($name);
-        // return $this->cache->get($name, function (ItemInterface $item) {
-        //     throw new \Exception('Cache item not found');
-        // });
         if ($this->cache->hasItem($name)) {
             return $this->cache->getItem($name)->get();
         }
-    
-        throw new \Exception("Cache item not found for key: $name");
+
+        return null;
     }
 
   /**
@@ -76,7 +76,7 @@ private function manageSize()
         $overflow = count($this->element_queue) - $this->maxsize;
         if ($overflow > 0) {
             foreach (array_slice($this->element_queue, 0, $overflow) as $name) {
-                if ($this->cache->hasItem($name)) {
+                if ($this->has($name)) {
                     $this->cache->delete($name);
                 }
             }
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index 0674f69..8d6a977 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -42,15 +42,6 @@ public function testGetValue()
         $value2 = 'mccain';
         $cache->set($key2, $value2);
 
-        // $retrievedValue1 = $cache->get($key1);
-        // $retrievedValue2 = $cache->get($key2);
-    
-        // var_dump($retrievedValue1->get());
-        // var_dump($retrievedValue2->get());
-
-        // $this->assertEquals($value1, $retrievedValue1);
-        // $this->assertEquals($value2, $retrievedValue2);
-
         $this->assertEquals($value1, $cache->get($key1));
         $this->assertEquals($value2, $cache->get($key2));
     }

From b0293aeb735e068d104dacb001f599c6fc97f415 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 15:15:18 +0500
Subject: [PATCH 5/9] updating to in-memory cache

---
 src/cache/DefaultCache.php | 4 ++--
 tests/DefaultCacheTest.php | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 210a903..9047071 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -2,7 +2,7 @@
 
 namespace ipinfo\ipinfo\cache;
 
-use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
 use Symfony\Contracts\Cache\ItemInterface;
 
 /**
@@ -19,7 +19,7 @@ class DefaultCache implements CacheInterface
 
     public function __construct(int $maxsize, int $ttl)
     {
-        $this->cache = new FilesystemAdapter();
+        $this->cache = new ArrayAdapter();
         $this->element_queue = array();
         $this->maxsize = $maxsize;
         $this->ttl = $ttl;
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index 8d6a977..81b170d 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -26,7 +26,7 @@ public function testHasValue()
     public function testDoesNotHaveValue()
     {
         $cache = new DefaultCache($maxsize = 4, $ttl = 2);
-        $key = 'ink';
+        $key = 'test';
 
         $this->assertFalse($cache->has($key));
     }

From cd40a7bdad0ca036fc5081f63bf652fa6642a391 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 15:16:41 +0500
Subject: [PATCH 6/9] updating get func

---
 src/cache/DefaultCache.php | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 9047071..22ba77f 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -61,11 +61,7 @@ public function set(string $name, $value)
    */
     public function get(string $name)
     {
-        if ($this->cache->hasItem($name)) {
-            return $this->cache->getItem($name)->get();
-        }
-
-        return null;
+        return $this->cache->getItem($name)->get();
     }
 
   /**

From 150eca28c2902f2809ad72abd75eeb233e10f5fc Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Thu, 6 Jul 2023 17:42:13 +0500
Subject: [PATCH 7/9] updated check

---
 src/cache/DefaultCache.php | 2 +-
 tests/DefaultCacheTest.php | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/cache/DefaultCache.php b/src/cache/DefaultCache.php
index 22ba77f..fe89d49 100644
--- a/src/cache/DefaultCache.php
+++ b/src/cache/DefaultCache.php
@@ -42,7 +42,7 @@ public function has(string $name): bool
    */
     public function set(string $name, $value)
     {
-        if (!in_array($name, $this->element_queue)) {
+        if (!$this->cache->hasItem($name)) {
             $this->element_queue[] = $name;
         }
 
diff --git a/tests/DefaultCacheTest.php b/tests/DefaultCacheTest.php
index 81b170d..1e45563 100644
--- a/tests/DefaultCacheTest.php
+++ b/tests/DefaultCacheTest.php
@@ -3,7 +3,6 @@
 namespace ipinfo\ipinfo\tests;
 
 use ipinfo\ipinfo\cache\DefaultCache;
-use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use PHPUnit\Framework\TestCase;
 
 class DefaultCacheTest extends TestCase

From 40ba9884b3216c254769c1c168c34d6bc817eb96 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Mon, 10 Jul 2023 11:06:49 +0500
Subject: [PATCH 8/9] updating phpunit version

---
 composer.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/composer.json b/composer.json
index c5a1fbf..cc556a8 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "symfony/http-foundation": "^6.2"
     },
     "require-dev": {
-        "phpunit/phpunit": ">=8 <10",
+        "phpunit/phpunit": "^9.5.20",
         "squizlabs/php_codesniffer": "^3.5.8"
     },
     "autoload": {

From 06afa8a157a4969409699b5cfdd35ef9000129f0 Mon Sep 17 00:00:00 2001
From: Samuel Gill <samuelgill1996@gmail.com>
Date: Mon, 10 Jul 2023 11:20:54 +0500
Subject: [PATCH 9/9] updating test array for batch test

---
 tests/IPinfoTest.php | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/tests/IPinfoTest.php b/tests/IPinfoTest.php
index 15c9366..d263576 100644
--- a/tests/IPinfoTest.php
+++ b/tests/IPinfoTest.php
@@ -194,11 +194,12 @@ public function testGetBatchDetails()
             $this->assertEquals($res['8.8.8.8/hostname'], 'dns.google');
             $this->assertEquals($res['4.4.4.4'], [
                 'ip' => "4.4.4.4",
-                'city' => "Taipei",
-                'region' => "Taiwan",
-                'country' => "TW",
-                'loc' => "25.0478,121.5319",
-                'timezone' => "Asia/Taipei",
+                'city' => "Paris",
+                'region' => "Île-de-France",
+                'country' => "FR",
+                'loc' => "48.8534,2.3488",
+                'postal' => "75000",
+                'timezone' => "Europe/Paris",
                 'asn' => [
                     'asn' => "AS3356",
                     'name' => "Level 3 Parent, LLC",
@@ -229,13 +230,13 @@ public function testGetBatchDetails()
                 ],
                 'domains' => [
                     'ip' => "4.4.4.4",
-                    'total' => 124,
+                    'total' => 126,
                     'domains' => [
                         'ncrsaas.com',
-                        'snowdongliders.com',
-                        'codecrunch.se',
-                        'tetrauni.com',
-                        'reidaidns.com'
+                        'datacenter-team.com',
+                        'ddufjfjantlpok.tk',
+                        'salvafabregas.com',
+                        'bfgroup.kz'
                     ]
                 ],
                 'org' => 'AS3356 Level 3 Parent, LLC',