/** A registered Terraform module: a folder of Terraform code, relative to the modules folder of Cloud Platform. */
export type TfModule = {
  name: string
  root: string
  description: string
  /** The address of the module's configurator, the application that edits the variables of its instances. */
  configuratorUrl: string | null
}

/** A deployment of a module, whose state is kept in the schema stateSchema of the pg backend. */
export type TfInstance = {
  module: string
  name: string
  stateSchema: string
  /** ISO 8601. */
  created: string
}

/** A variable file of an instance, without its content. */
export type TfvarsFileStatus = {
  name: string
  bytes: number
  /** ISO 8601, the time of the last write. */
  modified: string
  /** Whether the content the last write replaced is kept. */
  previous: boolean
}

/** The names of modules and instances: a lower-case letter, then lower-case letters, digits and hyphens. */
export const TF_NAME_PATTERN = /^[a-z][a-z0-9-]*$/

/** The names of variable files: letters, digits, '_', '.' and '-', ending in .tfvars.json. */
export const TFVARS_FILE_PATTERN = /^[A-Za-z0-9_.-]+\.tfvars\.json$/

/** The names of pg schemas of a state: a lower-case letter or '_', then lower-case letters, digits and '_'. */
export const STATE_SCHEMA_PATTERN = /^[a-z_][a-z0-9_]*$/