Added some core loop mechanic

added some safe checks in the core

core.lua

@@ -98,16 +98,45 @@ function Core:download(file)
         return false, "Invalid type: "..textutils.serialiseJSON(data)
     end
 
+    if fs.exists(file) then
+        fs.delete(file);
+    end
+
     local fileStream = io.open(file, "w");
-    fileStream:write(data.fileContent);
+
+    if not fileStream then
+        return false, "Failed to open fileStream"
+    end
+
+    fileStream:write(data.data);
     fileStream:close();
 
     return true, "Success"
 end
 
+function Core:tick()
+    if not self then
+        error("No instance!")
+    end
+
+    if not self.ws then
+        return false, "Not initilized"
+    end
+
+    self:send({type = "TICK"});
+
+    local success, data = self:read();
+
+    if not success then
+        return false, "Failed to do anything: "..data;
+    end
+
+    print("Server expects Action: "..textutils.serialiseJSON(data))
+end
+
 function Core:disconnect()
     if not self then
-        return "Not instance"
+        error("No instance!")
     end
 
     if not self.ws then
@@ -115,4 +144,16 @@ function Core:disconnect()
     end
 
     self.ws.close();
+end
+
+function Core:setLoop(loop)
+    self.loop = loop;
+end
+
+function Core:start()
+    while true do
+        if self.loop then
+            self.loop();
+        end
+    end
 end

downloadCore.lua

@@ -0,0 +1,9 @@
+require("core")
+
+local core = Core.new();
+
+core:connect();
+
+core:download("core.lua");
+
+core:disconnect();