variable "aws_account_id" {
  type = string
  validation {
    condition     = can(regex("^[0-9]{12}$", var.aws_account_id))
    error_message = "Expected a 12-digit AWS account ID."
  }
}
variable "name" {
  type    = string
  default = "carlos"
  validation {
    condition     = can(regex("^[a-z][a-z0-9-]{1,18}[a-z0-9]$", var.name))
    error_message = "Use 3–20 lowercase letters, digits or hyphens, starting with a letter and ending with a letter or digit."
  }
}
variable "release_public_key" {
  type = string
  validation {
    condition     = can(regex("^[A-Za-z0-9+/]{42}[AEIMQUYcgkosw048]=$", var.release_public_key))
    error_message = "Expected a base64 32-byte Ed25519 public key."
  }
}
variable "apps_domain" {
  type = string
  validation {
    condition     = length(var.apps_domain) <= 253 && can(regex("^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)+$", var.apps_domain))
    error_message = "Expected a lowercase DNS domain without a scheme or path."
  }
}
variable "instance_type" {
  type    = string
  default = "t4g.small"
  validation {
    condition     = can(regex("^(t4g|m[6-9]g|c[6-9]g|r[6-9]g)\\.", var.instance_type))
    error_message = "Choose an ARM64 Graviton instance type."
  }
}
variable "root_volume_gib" {
  type    = number
  default = 20
  validation {
    condition     = var.root_volume_gib >= 20 && floor(var.root_volume_gib) == var.root_volume_gib
    error_message = "Use a whole number of GiB, at least 20."
  }
}
variable "region" {
  type    = string
  default = "eu-west-1"
  validation {
    condition     = can(regex("^[a-z]{2}-[a-z]+-[0-9]+$", var.region))
    error_message = "Expected an AWS commercial region name."
  }
}