From 16a32604f5f2459418dd94f31de499990f0dfb69 Mon Sep 17 00:00:00 2001
From: emkael <emkael@tlen.pl>
Date: Wed, 24 Jan 2018 11:48:36 +0100
Subject: Tweaks to FB token auto-renewal

---
 bin/fb-user-token.php | 55 +++++++++++++++++++++++++++++----------------------
 1 file changed, 31 insertions(+), 24 deletions(-)

(limited to 'bin/fb-user-token.php')

diff --git a/bin/fb-user-token.php b/bin/fb-user-token.php
index 943bf4c..3aeb8aa 100644
--- a/bin/fb-user-token.php
+++ b/bin/fb-user-token.php
@@ -3,29 +3,36 @@
 $basePath = dirname(__FILE__);
 $configFile = $basePath . '/../config/facebook.json';
 
-$config = json_decode(file_get_contents($configFile), TRUE);
-$firstLink =
-    'https://graph.facebook.com/oauth/client_code?' .
-    http_build_query([
-        'access_token' => $config['user_token'],
-        'client_id' => $config['app_id'],
-        'client_secret' => $config['app_secret'],
-        'redirect_uri' => 'http://rss.emkael.info/facebook.php'
-    ]);
-$firstResponse = json_decode(file_get_contents($firstLink));
-
-$secondLink =
-    'https://graph.facebook.com/oauth/access_token?' .
-    http_build_query([
-        'client_id' => $config['app_id'],
-        'code' => $firstResponse->code,
-        'redirect_uri' => 'http://rss.emkael.info/facebook.php'
-    ]);
-$secondResponse = json_decode(file_get_contents($secondLink));
-
-$config['user_token'] = $secondResponse->access_token;
-
-print json_encode($config);
-fwrite(STDERR, 'FB API token renewed, expires on: ' . date('Y-m-d H:i:s', strtotime('+' . $secondResponse->expires_in . ' seconds')) . PHP_EOL);
+$expiryFile = $basePath . '/fb-user-token-expiry';
+
+if (!file_exists($expiryFile) || trim(file_get_contents($expiryFile)) == date('Y-m-d')) {
+
+    $config = json_decode(file_get_contents($configFile), TRUE);
+    $firstLink =
+        'https://graph.facebook.com/oauth/client_code?' .
+        http_build_query([
+            'access_token' => $config['user_token'],
+            'client_id' => $config['app_id'],
+            'client_secret' => $config['app_secret'],
+            'redirect_uri' => 'http://rss.emkael.info/facebook.php'
+        ]);
+    $firstResponse = json_decode(file_get_contents($firstLink));
+
+    $secondLink =
+        'https://graph.facebook.com/oauth/access_token?' .
+        http_build_query([
+            'client_id' => $config['app_id'],
+            'code' => $firstResponse->code,
+            'redirect_uri' => 'http://rss.emkael.info/facebook.php'
+        ]);
+    $secondResponse = json_decode(file_get_contents($secondLink));
+
+    $config['user_token'] = $secondResponse->access_token;
+
+    fwrite(STDERR, 'FB API token renewed, expires on: ' . date('Y-m-d H:i:s', strtotime('+' . $secondResponse->expires_in . ' seconds')) . PHP_EOL);
+    file_put_contents($configFile, json_encode($config));
+    file_put_contents($expiryFile, date('Y-m-d',  strtotime('+' . $secondResponse->expires_in . ' seconds')));
+
+}
 
 ?>
-- 
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