# locals.tf defines common expressions used by the module.

locals {
  # Project containing existing Cloud SQL instance.
  sql_instance_project = coalesce(var.sql_instance_project, var.project)

  # Should a DNS domain mapping be created?
  domain_mapping_present = var.dns_name != ""

  # Do we need to enable the 'beta' launch stage - only required if certain beta
  # functionality is being used, or if `enable_beta_launch_stage` is set downstream.
  enable_beta_launch_stage = (
    var.enable_beta_launch_stage || length(var.secrets_volume) != 0 || length(var.secrets_envars) != 0
  )

  # Whether we should monitor the custom domain - only possible if there is a dns_name
  # set and unauthenticated invocation is enabled
  can_monitor_custom_dns = var.dns_name != "" && var.allow_unauthenticated_invocations

  # Hosts to monitor. We use the automatic host from Cloud Run and any custom
  # domain mapped host, if can_monitor_custom_dns is true
  monitor_hosts = var.disable_monitoring ? [] : concat(
    [trimsuffix(trimprefix(google_cloud_run_service.webapp.status[0].url, "https://"), "/")],
    local.can_monitor_custom_dns ? [var.dns_name] : []
  )
}