variable "project" {
  description = "GCP project id"
  type        = string
}

variable "region" {
  description = "GCP region for every regional resource"
  type        = string
  default     = "europe-west2" # London: keeps public genomic test data and the Cambridge team in one jurisdiction
}

variable "github_repo" {
  description = "owner/name of the GitHub repo allowed to push images via Workload Identity Federation"
  type        = string
  default     = "lynchaos/rarelens"
}

variable "deletion_protection" {
  description = "Protect the GKE cluster and Cloud SQL instance from `terraform destroy`; set false to tear the lab down"
  type        = bool
  default     = true
}

variable "deploy_kubernetes" {
  description = "Create the GKE cluster (Argo/ArgoCD track). Off by default: it costs ~$150/month idle, while the serverless track costs ~£1 (docs/cloud.md)"
  type        = bool
  default     = false
}

variable "deploy_cloud_sql" {
  description = "Create a Cloud SQL instance (~$10/month). Off by default: set database_url to a free scale-to-zero Postgres such as Neon"
  type        = bool
  default     = false
}

variable "database_url" {
  description = "Postgres URL used when deploy_cloud_sql is false, e.g. postgresql+asyncpg://user:pass@host/db?sslmode=require"
  type        = string
  default     = ""
  sensitive   = true
}

variable "image_tag" {
  description = "Image tag deployed to Cloud Run; CI pushes the commit SHA"
  type        = string
  default     = "latest"
}

variable "model_uri" {
  description = "Optional model artifact to score with, e.g. gs://<project>-rarelens-data/models/pathogenicity/1. Empty means use the MLflow registry"
  type        = string
  default     = ""
}

variable "max_instances" {
  description = "Cloud Run instance ceiling per service: scale-to-zero bounds the floor, this bounds the bill"
  type        = number
  default     = 2
}