variables.tf

################################################################################
# Common
################################################################################
variable "name" {
  description = "Name to be used on all the resources as identifier"
  type        = string
  default     = ""
}

variable "tags" {
  description = "A map of tags to add to all resources"
  type        = map(string)
  default     = {}
}
################################################################################
# TGW Peering Settings
################################################################################
variable "peer_requester_tgw_id" {
  description = "Existing Transit Gateway ID to use instead of creating a new one"
  type        = string
  default     = null
}

variable "tgw_association_default_route_table_id" {
  description = "Existing Transit Gateway Route Table ID to use instead of creating a new one"
  type        = string
  default     = "tgw-rtb-0e2771324a8b5ccbc"
}

variable "tgw_peering_attachments" {
  description = "A map of transit gateway peering attachments"
  type = map(object({
    peer_acceptor_tgw_id = string
    peer_region          = string
    peer_account_id      = string
    request_acceptor     = bool
  }))
  default = {}
}

variable "tgw_peering_route_table_routes" {
  description = "A list of routes for the Transit Gateway Peering Route Table"
  type = list(object({
    destination_cidr_block = string
    peering_attachment_key = string
  }))
  default = []
}

variable "enable_peering" {
  description = "Enable Transit Gateway Peering"
  type        = bool
  default     = false
}

################################################################################
# Transit Gateway
################################################################################

variable "create_tgw" {
  description = "Controls if TGW should be created (it affects almost all resources)"
  type        = bool
  default     = true
}

variable "description" {
  description = "Description of the EC2 Transit Gateway"
  type        = string
  default     = null
}

variable "amazon_side_asn" {
  description = "The Autonomous System Number (ASN) for the Amazon side of the gateway. By default the TGW is created with the current default Amazon ASN."
  type        = string
  default     = null
}

variable "enable_default_route_table_association" {
  description = "Whether resource attachments are automatically associated with the default association route table"
  type        = bool
  default     = true
}

variable "enable_default_route_table_propagation" {
  description = "Whether resource attachments automatically propagate routes to the default propagation route table"
  type        = bool
  default     = true
}

variable "enable_auto_accept_shared_attachments" {
  description = "Whether resource attachment requests are automatically accepted"
  type        = bool
  default     = false
}

variable "enable_vpn_ecmp_support" {
  description = "Whether VPN Equal Cost Multipath Protocol support is enabled"
  type        = bool
  default     = true
}

variable "enable_multicast_support" {
  description = "Whether multicast support is enabled"
  type        = bool
  default     = false
}

variable "enable_dns_support" {
  description = "Should be true to enable DNS support in the TGW"
  type        = bool
  default     = true
}

variable "transit_gateway_cidr_blocks" {
  description = "One or more IPv4 or IPv6 CIDR blocks for the transit gateway. Must be a size /24 CIDR block or larger for IPv4, or a size /64 CIDR block or larger for IPv6"
  type        = list(string)
  default     = []
}

variable "timeouts" {
  description = "Create, update, and delete timeout configurations for the transit gateway"
  type        = map(string)
  default     = {}
}

variable "tgw_tags" {
  description = "Additional tags for the TGW"
  type        = map(string)
  default     = {}
}

variable "tgw_default_route_table_tags" {
  description = "Additional tags for the Default TGW route table"
  type        = map(string)
  default     = {}
}

variable "accepter_region" {
  description = "The region of the accepter VPC of the TGW Peering"
  type        = string
  default     = "eu-central-1"
}

################################################################################
# VPC Attachment
################################################################################

variable "vpc_attachments" {
  description = "Maps of maps of VPC details to attach to TGW. Type 'any' to disable type validation by Terraform."
  type        = any
  default     = {}
}

variable "tgw_vpc_attachment_tags" {
  description = "Additional tags for VPC attachments"
  type        = map(string)
  default     = {}
}

################################################################################
# Route Table / Routes
################################################################################

variable "transit_gateway_route_table_id" {
  description = "Identifier of EC2 Transit Gateway Route Table to use with the Target Gateway when reusing it between multiple TGWs"
  type        = string
  default     = null
}

variable "tgw_route_table_tags" {
  description = "Additional tags for the TGW route table"
  type        = map(string)
  default     = {}
}

################################################################################
# Resource Access Manager
################################################################################

variable "share_tgw" {
  description = "Whether to share your transit gateway with other accounts"
  type        = bool
  default     = true
}

variable "ram_name" {
  description = "The name of the resource share of TGW"
  type        = string
  default     = ""
}

variable "ram_allow_external_principals" {
  description = "Indicates whether principals outside your organization can be associated with a resource share."
  type        = bool
  default     = false
}

variable "ram_principals" {
  description = "A list of principals to share TGW with. Possible values are an AWS account ID, an AWS Organizations Organization ARN, or an AWS Organizations Organization Unit ARN"
  type        = list(string)
  default     = []
}

variable "ram_resource_share_arn" {
  description = "ARN of RAM resource share"
  type        = string
  default     = ""
}

variable "ram_tags" {
  description = "Additional tags for the RAM"
  type        = map(string)
  default     = {}
}