variable "project" {
  description = "Project ID."
  type        = string
}

variable "region" {
  description = "Region."
  type        = string
}

variable "tier" {
  description = "DB machine type."
  type        = string
  default     = "db-f1-micro"
}

variable "db_version" {
  description = "Database version."
  type        = string
  default     = "POSTGRES_13"
}

variable "private_network_id" {
  description = "Private network id."
  type        = string
}

output "connection_name" {
  description = "The connection string for connecting to the cloudsql instance (for example, through cloudsql proxy)."
  value       = google_sql_database_instance.instance.connection_name
}

resource "random_id" "cloudsql" {
  byte_length = 4
}

resource "google_sql_database_instance" "instance" {
  project          = var.project
  region           = var.region
  name             = "my-database-instance-${random_id.cloudsql.hex}"
  database_version = var.db_version

  settings {
    tier = var.tier

    ip_configuration {
      ipv4_enabled    = false
      private_network = var.private_network_id
      require_ssl     = true
    }
  }

  deletion_protection = "false"
  # deletion_protection = "true"
}