context.tf

variable "namespace" {
  type        = string
  default     = null
  description = "ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique"
}

variable "environment" {
  type        = string
  default     = null
  description = "ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'"
}

variable "stage" {
  type        = string
  default     = null
  description = "ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'"
}

variable "name" {
  type        = string
  default     = null
  description = <<-EOT
    ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.
    This is the only ID element not also included as a `tag`.
    The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.
    EOT
}

variable "attributes" {
  type        = list(string)
  default     = []
  description = <<-EOT
    ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,
    in the order they appear in the list. New attributes are appended to the
    end of the list. The elements of the list are joined by the `delimiter`
    and treated as a single ID element.
    EOT
}

variable "tags" {
  type        = map(string)
  default     = {}
  description = <<-EOT
    Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).
    Neither the tag keys nor the tag values will be modified by this module.
    EOT
}

variable "context" {
  type = any
  default = {
    enabled             = true
    namespace           = null
    tenant              = null
    environment         = null
    stage               = null
    name                = null
    delimiter           = null
    attributes          = []
    tags                = {}
    additional_tag_map  = {}
    regex_replace_chars = null
    label_order         = []
    id_length_limit     = null
    label_key_case      = null
    label_value_case    = null
    descriptor_formats  = {}
    # Note: we have to use [] instead of null for unset lists due to
    # https://github.com/hashicorp/terraform/issues/28137
    # which was not fixed until Terraform 1.0.0,
    # but we want the default to be all the labels in `label_order`
    # and we want users to be able to prevent all tag generation
    # by setting `labels_as_tags` to `[]`, so we need
    # a different sentinel to indicate "default"
    labels_as_tags = ["unset"]
  }
  description = <<-EOT
    Single object for setting entire context at once.
    See description of individual variables for details.
    Leave string and numeric variables as `null` to use default value.
    Individual variable settings (non-null) override settings in context object,
    except for attributes, tags, and additional_tag_map, which are merged.
  EOT

  validation {
    condition     = lookup(var.context, "label_key_case", null) == null ? true : contains(["lower", "title", "upper"], var.context["label_key_case"])
    error_message = "Allowed values: `lower`, `title`, `upper`."
  }

  validation {
    condition     = lookup(var.context, "label_value_case", null) == null ? true : contains(["lower", "title", "upper", "none"], var.context["label_value_case"])
    error_message = "Allowed values: `lower`, `title`, `upper`, `none`."
  }
}