variable "use" {
  type        = string
  description = <<-EOT
    Strategy for using load balancer resources:
      'select' to use existing,
      or 'create' to generate new load balancer resources.
    The default is 'create'.
    When selecting a load balancer, the name must be provided and a load balancer with the "Name" tag must exist.
    When selecting a load balancer the security group, subnet, and VPC arguments are ignored.
  EOT
}
variable "name" {
  type        = string
  description = <<-EOT
    The name of the Load Balancer, there must be a 'Name' tag on it to be found.
    When generating a load balancer, this will be added as a tag to the resource.
    This tag is how we will find it again in the future.
  EOT
}
variable "vpc_id" {
  type        = string
  description = <<-EOT
    The VPC id where the load balancer will be created.
  EOT
}
variable "vpc_type" {
  type        = string
  description = <<-EOT
    The type of VPC to use, 'dualstack', 'ipv4', or 'ipv6'.
  EOT
}
variable "security_group_id" {
  type        = string
  description = <<-EOT
    The security group id to attach to the Load Balancer.
  EOT
  default     = ""
}
variable "subnets" {
  type = map(object({
    id                   = string
    arn                  = string
    name                 = string
    type                 = string
    availability_zone    = string
    availability_zone_id = string
    cidrs = object({
      ipv4 = string
      ipv6 = string
    })
    tags = map(string)
  }))
  description = <<-EOT
    Set of subnets to attach to the Load Balancer.
  EOT
}
variable "access_info" {
  type = map(object({
    port        = number
    ip_family   = string       # ipv4 or ipv6
    cidrs       = list(string) # remote cidrs that can access the load balancer
    protocol    = string
    target_name = string
  }))
  description = <<-EOT
    A map of access information objects.
    The port is the port to expose on the load balancer.
    The cidrs is a list of external cidr blocks to allow access to the load balancer.
    The protocol is the network protocol to expose on, this can be 'udp' or 'tcp'.
    The target_name must be unique per region per account,
      can have a maximum of 32 characters,
      must contain only alphanumeric characters or hyphens,
      and must not begin or end with a hyphen.
    Example:
    {
      test = {
        port        = 443
        ip_family   = "ipv4"
        cidrs       = ["1.1.1.1/32"]
        protocol    = "tcp"
        target_name = "test-test-123abc"
      }
    }
  EOT
  default     = null
}