# This file handles environment variable loading from .env file

locals {
  # Parse .env file if it exists and make variables available
  env_file_exists = fileexists("${path.module}/.env")
  
  # Read and parse .env file content
  env_file_content = local.env_file_exists ? file("${path.module}/.env") : ""
  
  # Convert lines to key-value pairs
  env_vars = local.env_file_exists ? {
    for line in compact(split("\n", local.env_file_content)) :
    trimspace(split("=", line)[0]) => trimspace(join("=", slice(split("=", line), 1, length(split("=", line)))))
    if length(split("=", line)) > 1 && !startswith(trimspace(line), "#")
  } : {}
  
  # Environment variables that can override Terraform variables
  server_ip_override      = lookup(local.env_vars, "SERVER_IP", "")
  worker_ips_override     = lookup(local.env_vars, "WORKER_IPS", "")
  ssh_user_override       = lookup(local.env_vars, "SSH_USER", "")
  ssh_private_key_override = lookup(local.env_vars, "SSH_PRIVATE_KEY", "")
  domain_override         = lookup(local.env_vars, "DOMAIN", "")
  k3s_version_override    = lookup(local.env_vars, "K3S_VERSION", "")
}

# Use environment variables if provided, otherwise use terraform.tfvars values
locals {
  effective_server_ip       = local.server_ip_override != "" ? local.server_ip_override : var.server_ip
  effective_worker_ips      = local.worker_ips_override != "" ? split(",", local.worker_ips_override) : var.worker_ips
  effective_ssh_user        = local.ssh_user_override != "" ? local.ssh_user_override : var.ssh_user
  effective_ssh_private_key = local.ssh_private_key_override != "" ? local.ssh_private_key_override : var.ssh_private_key
  effective_domain          = local.domain_override != "" ? local.domain_override : var.domain
  effective_k3s_version     = local.k3s_version_override != "" ? local.k3s_version_override : var.k3s_version
}