Player Rotation

Hi guys, I'm currently having an issue with switching my character rotation to match the set direction.

Right now I'm currently using:

 float moveDir = Input.GetAxisRaw("Horizontal");
         if (moveDir !=0) 
         {
             //transform.eulerAngles = (moveDir>0)?Vector3.up * 180:Vector3.zero;
         }

Which is working prefectly, however I need to attach a 'left' and 'right' function to two seperate 'buttons'.

I have this, but the player keeps on facing the lefthand side but will move to the right.

 if(Input.GetKeyDown("e"))
     {
     Debug.Log ("Left");
     Player.transform.Translate(Vector3.left * moveSpeed * Time.deltaTime);
     transform.eulerAngles = (moveDir>0)?Vector3.up * 180:Vector3.zero;
     }
                 
     if(Input.GetKeyDown("r"))
     {
     Debug.Log ("Right");
     Player.transform.Translate(Vector3.right * moveSpeed * Time.deltaTime);
     transform.eulerAngles = (moveDir>0)?Vector3.up * 180:Vector3.zero;
     }

Any help is greatly appreciated, thank you in advance.

PS: I'm using the 'e' & 'r' keys just to simulate a 'touch button' for the iOS/Android devices.