variables.tf

variable "default_region" {
  description = "The default region to deploy resources"
  type        = string
  default     = "eu-north-1"

}

variable "nr_az" {
  description = "Number of Availability Zones to use"
  type        = number
  default     = 2
}

variable "vpc_name" {
  description = "Name of the VPC"
  type        = string
  default     = "3-tier-vpc"
}

variable "vpc_cidr" {
  description = "CIDR block for the VPC"
  type        = string
  default     = "10.0.0.0/16"
}

variable "web_instance_type" {
  description = "EC2 instance type for the web tier instances"
  type        = string
  default     = "t3.micro"

  validation {
    condition     = can(regex("^t[0-9]+\\.(micro|small)$", var.web_instance_type))
    error_message = "Instance type must be from the T family and either micro or small."
  }
}

variable "app_instance_type" {
  description = "EC2 instance type for the application tier instances"
  type        = string
  default     = "t3.small"

  validation {
    condition     = can(regex("^t[0-9]+\\.(micro|small)$", var.app_instance_type))
    error_message = "Instance type must be from the T family and either micro or small."
  }
}


variable "db_name" {
  description = "Name of the RDS database"
  type        = string
  default     = "demo-db"
}

variable "db_username" {
  description = "Username for the RDS database"
  type        = string
  default     = "admin"
}

variable "rds_engine" {
  description = "RDS engine configuration"
  type        = map(string)
  default = {
    engine               = "mysql"
    engine_version       = "8.0.35"
    family               = "mysql8.0"
    major_engine_version = "8.0"
  }
}