main.tf

resource "aws_lb_listener" "listeners" {
  for_each = {
    for listener in local.listeners : "${listener.key}" => listener
  }
  load_balancer_arn = each.value.load_balancer_arn
  port = each.value.port
  protocol = each.value.protocol
  ssl_policy = each.value.ssl_policy
  certificate_arn = each.value.certificate_arn
  alpn_policy = each.value.alpn_policy

  dynamic "default_action" {
    for_each = each.value.default_action == null ? [] : [1]

    content {
      type = each.value.default_action.type
      //target_group_arn = each.value.default_action.target_group_arn == null ? null : TARGETGROUPHERE
      dynamic "redirect" {
        for_each = each.value.default_action.redirect == null ? [] : [1]
        content {
          port = each.value.default_action.redirect.port
          protocol = each.value.default_action.redirect.protocol
          status_code = each.value.default_action.redirect.status_code
        }
      }

      dynamic "fixed_response" {
        for_each = each.value.default_action.fixed_response == null ? [] : [1]
        content {
          content_type = each.value.default_action.fixed_response.content_type
          message_body = each.value.default_action.fixed_response.message_body
          status_code = each.value.default_action.fixed_response.status_code
        }
      }
    }
  }
}