data "template_file" "user_data" {
  template = file("launch-data.tpl")
  vars = {
    db_username      = var.db_username
    db_user_password = var.db_password
    db_name          = var.db_name
    db_URL           = aws_db_instance.wp-db-instance.endpoint
  }
}

resource "aws_launch_template" "server" {
  name_prefix = "server"
  image_id = "ami-0557a15b87f6559cf" 
  instance_type = var.server_instance_type
  network_interfaces {
    security_groups = [ "${aws_security_group.server_sg.id}" ]

    associate_public_ip_address = true
  }
  
  user_data = data.template_file.user_data.rendered
  lifecycle {
      create_before_destroy = true
  }
  depends_on = [aws_db_instance.wp-db-instance]
}