variable "username" {
  description = "VK Cloud username"
  type        = string
}

variable "password" {
  description = "VK Cloud password"
  type        = string
  sensitive   = true
}

variable "project_id" {
  description = "Project ID"
  type        = string
}

variable "region" {
  description = "Region"
  type        = string
  default     = "ME1"
}

variable "ssh_key_name" {
  description = "Name of SSH key pair in VK Cloud"
  type        = string
}

variable "router_count" {
  description = "Number of IaaS Router VMs to provision"
  type        = number
  default     = 2

  validation {
    condition     = var.router_count >= 1
    error_message = "router_count must be at least 1."
  }
}

variable "private_supernet" {
  description = "Address pool from which each router's private per-interface subnets are carved (must not overlap router-lan-subnet 10.200.10.0/24)"
  type        = string
  default     = "10.90.0.0/16"
}

variable "private_subnet_prefix_length" {
  description = "Prefix length of each router's private interface subnet (/29 or /28)"
  type        = number
  default     = 29

  validation {
    condition     = contains([28, 29], var.private_subnet_prefix_length)
    error_message = "private_subnet_prefix_length must be 28 or 29."
  }
}

variable "router_availability_zones" {
  description = "Availability zones to spread router VMs across (cycled via count.index)"
  type        = list(string)
  default     = ["ME1"]
}

variable "private_interface_count" {
  description = "Number of isolated private interfaces per router VM (in addition to the single public/WAN interface)"
  type        = number
  default     = 2

  validation {
    condition     = var.private_interface_count >= 1
    error_message = "private_interface_count must be at least 1."
  }
}