More minor improvements

- more type declarations
- remove config caching, it was a minor speed improvement, but a big confusion when website didnt updated after editing config
- fix issue where DB problems will display a PHP recursion error instead of the error template

src/private/php/Config.php

@@ -17,9 +17,8 @@ class Config {
 
     protected $databaseConfig;
     protected $config;
-    protected $cache;
 
-    public static function get($key, $default = null) {
+    public static function get(string $key, $default = null) {
         return self::i()->getValue($key, $default);
     }
 
@@ -36,14 +35,13 @@ class Config {
         }
 
         $this->databaseConfig = $config;
-        $this->cache = new PhpFileCache(__CACHE_DIR, "config");
     }
 
     /**
      * Returns config used to connect to the database
      * @return array Config as an array
      */
-    public function getDatabaseConfig() {
+    public function getDatabaseConfig(): array {
         return $this->databaseConfig;
     }
 
@@ -51,9 +49,8 @@ class Config {
      * Returns configuration saved in database
      * @return array Config file as an key => value array
      */
-    public function getConfig() {
+    public function getConfig(): array {
         if($this->config === null) {
-            $this->config = $this->cache->refreshIfExpired("config", function () {
             try {
                 $db = DatabaseUtils::i()->getDb();
                 $data = $db->select("config", ["identifier", "type", "value"]);
@@ -62,10 +59,6 @@ class Config {
                 exit;
             }
 
-                if(!empty($db->error()[1])) {
-                    return null;
-                }
-
             $cfg = [];
 
             foreach ($data as $item) {
@@ -89,7 +82,7 @@ class Config {
                     case "JSON":
                         $json = json_decode((string) $val, true);
 
-                            if ($json === false) {
+                        if (json_last_error() !== JSON_ERROR_NONE) {
                             throw new \Exception("Error loading config from db: cannot parse JSON from $key");
                         }
 
@@ -102,8 +95,7 @@ class Config {
                 $cfg[$key] = $val;
             }
 
-                return $cfg;
+            $this->config = $cfg;
-            }, 60);
         }
 
         return $this->config;
@@ -112,9 +104,8 @@ class Config {
     /**
      * Resets current config cache
      */
-    public function clearConfigCache() {
+    public function clearConfigCache(): void {
         $this->config = null;
-        $this->cache->eraseKey("config");
     }
 
     /**
@@ -123,19 +114,19 @@ class Config {
      * @param null $default
      * @return mixed value Returns string with
      * the value if key exists, null otherwise
+     * @throws \Exception
      */
-    public function getValue($key, $default = null) {
+    public function getValue(string $key, $default = null) {
-        return isset($this->getConfig()[$key]) ? $this->getConfig()[$key] : $default;
+        return $this->getConfig()[$key] ?? $default;
     }
 
     /**
      * Saves key => value combo in config table
      * @param string $key
      * @param string|int|float|bool|array|object $value
-     * @return bool true on success, false otherwise
      * @throws \Exception
      */
-    public function setValue($key, $value) {
+    public function setValue(string $key, $value): void {
         $db = DatabaseUtils::i()->getDb();
 
         switch (gettype($value)) {
@@ -168,12 +159,11 @@ class Config {
         ];
 
         if($db->has("config", ["identifier" => $key])) {
-            $ret = $db->update("config", $data, ["identifier" => $key]);
+            $db->update("config", $data, ["identifier" => $key]);
         } else {
-            $ret = $db->insert("config", $data);
+            $db->insert("config", $data);
         }
 
         $this->clearConfigCache();
-        return $ret;
     }
 }

src/private/php/Utils/DatabaseUtils.php

@@ -26,7 +26,7 @@ class DatabaseUtils {
      * database config. Stores connection for reuse.
      * @return \Medoo\Medoo database object
      */
-    public function getDb() {
+    public function getDb(): Medoo {
         if($this->db === null) {
             try {
                 $config = $this->configUtils->getDatabaseConfig();
@@ -53,7 +53,7 @@ class DatabaseUtils {
      * for checking if there was a database connection attempt.
      * @return bool
      */
-    public function isInitialised() {
+    public function isInitialised(): bool {
-        return !empty($this->db);
+        return $this->db !== null;
     }
 }

src/private/php/Utils/TemplateUtils.php

@@ -85,21 +85,19 @@ class TemplateUtils {
             $data["userLanguage"] = $userlang;
         }
 
-        if ($timestamp = $this->getOldestCacheTimestamp())
+        if ($timestamp = $this->getOldestCacheTimestamp()) {
             $data["oldestTimestamp"] = $timestamp;
+        }
 
         $data["tsExceptions"] = TeamSpeakUtils::i()->getExceptionsList();
 
-        if(@$dbutils->isInitialised())
+        $data["config"] = [];
-            $data["sqlCount"] = @$dbutils->getDb()->query("SHOW SESSION STATUS LIKE 'Questions'")->fetch()["Value"];
-        else
         $data["sqlCount"] = "none";
 
+        // only fetch those when DB connection is established
+        if($dbutils->isInitialised()) {
             $data["config"] = Config::i()->getConfig();
-
+            $data["sqlCount"] = @$dbutils->getDb()->query("SHOW SESSION STATUS LIKE 'Questions'")->fetchColumn(1);
-        $csrfToken = CsrfUtils::getToken();
-        $data["csrfToken"] = $csrfToken;
-        $data["csrfField"] = new Html('<input type="hidden" name="csrf-token" value="' . $csrfToken . '">');
 
             if (Config::get("adminstatus_enabled")) {
                 $data["adminStatus"] = AdminStatus::i()->getStatus(
@@ -109,6 +107,11 @@ class TemplateUtils {
                     Config::get("adminstatus_ignoredusers")
                 );
             }
+        }
+
+        $csrfToken = CsrfUtils::getToken();
+        $data["csrfToken"] = $csrfToken;
+        $data["csrfField"] = new Html('<input type="hidden" name="csrf-token" value="' . $csrfToken . '">');
 
         return $this->getLatte()->renderToString(__TEMPLATES_DIR . "/$templateName.latte", $data);
     }