started implementing download method for mods and authentication for download.

scripts/class.FactorioMod.php

@@ -44,6 +44,12 @@ class FactorioMod {
      */
     private $mod_folder = null;
 
+    /**
+     * @var string $game_folder - Path to the Factorio game folder.
+     */
+    private $game_folder = "factorio";
+
+
     /**
      * Reads all Mods as FactorioMod objects to an array.
      * @param string $modFolder Path to the mods folder.
@@ -223,7 +229,14 @@ class FactorioMod {
      * @return bool True if the mod was downloaded, false otherwise.
      */
     private function download() : bool {
-        // TODO: implement
+        
+        // TODO: continue implementing.. where player-data.json..
+        $player_data = json_decode(file_get_contents($this->game_folder. "/player-data.json"), true);
+        $token = $player_data["service-token"];
+        $username = $player_data["service-username"];
+
+        $url = "https://mods.factorio.com" . $this->getLastVersionInfo()->download_url . "?username=$username&token=$token";
+
         return false;
     }
 
@@ -259,7 +272,11 @@ class FactorioMod {
      * @return bool True if the mod settings have been loaded successfully, false otherwise.
      */
     private function loadModSettings() : bool {
-        // TODO: implement
+        
+        $this->mod_settings = json_decode(
+            file_get_contents($this->mod_folder. "/settings.json")
+        );
+
         return false;
     }
 
@@ -271,6 +288,28 @@ class FactorioMod {
         return $this->mod_settings;
     }
 
+    /**
+     * Sets the path to the game folder.
+     * @param string $game_folder Path to the game folder.
+     * @return FactorioMod The instance of FactorioMod for chaining.
+     */
+    public function setGameFolder(string $game_folder) : FactorioMod {
+
+        $this->game_folder = $game_folder;
+        return $this;
+
+    }
+
+    /**
+     * Returns the path to the game folder.
+     * @return string Path to the game folder.
+     */
+    public function getGameFolder() : string {
+
+        return $this->game_folder;
+
+    }
+
     /**
      * Saves the changes in the mod settings for all mods (enabled/disabled) to the settings.json file.
      * @return bool True if the mod settings have been saved successfully, false otherwise.
@@ -278,9 +317,15 @@ class FactorioMod {
     private function saveModSettings() : bool {
 
         $j = json_encode($this->mod_settings);
-        // TODO: implement
+        
+        $r = file_put_contents($this->mod_folder. "/settings.json", $j);
+
+        if($r === false) {
+            return false;
+        }
+
+        return ( $r === strlen($j) );
 
-        return false;
     }
 
     /**