variable "context" {
  type = any
  default = {
    enabled             = true
    namespace           = 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
  }
  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`."
  }
}

variable "enabled" {
  type        = bool
  default     = null
  description = "Set to false to prevent the module from creating any resources"
}

variable "namespace" {
  type        = string
  default     = null
  description = "Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp'"
}

variable "environment" {
  type        = string
  default     = null
  description = "Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT'"
}

variable "stage" {
  type        = string
  default     = null
  description = "Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release'"
}

variable "name" {
  type        = string
  default     = null
  description = "Solution name, e.g. 'app' or 'jenkins'"
}

variable "delimiter" {
  type        = string
  default     = null
  description = <<-EOT
    Delimiter to be used between `namespace`, `environment`, `stage`, `name` and `attributes`.
    Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.
  EOT
}

variable "attributes" {
  type        = list(string)
  default     = []
  description = "Additional attributes (e.g. `1`)"
}

variable "tags" {
  type        = map(string)
  default     = {}
  description = "Additional tags (e.g. `map('BusinessUnit','XYZ')`"
}

variable "additional_tag_map" {
  type        = map(string)
  default     = {}
  description = "Additional tags for appending to tags_as_list_of_maps. Not added to `tags`."
}

variable "label_order" {
  type        = list(string)
  default     = null
  description = <<-EOT
    The naming order of the id output and Name tag.
    Defaults to ["namespace", "environment", "stage", "name", "attributes"].
    You can omit any of the 5 elements, but at least one must be present.
  EOT
}

variable "regex_replace_chars" {
  type        = string
  default     = null
  description = <<-EOT
    Regex to replace chars with empty string in `namespace`, `environment`, `stage` and `name`.
    If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.
  EOT
}

variable "id_length_limit" {
  type        = number
  default     = null
  description = <<-EOT
    Limit `id` to this many characters (minimum 6).
    Set to `0` for unlimited length.
    Set to `null` for default, which is `0`.
    Does not affect `id_full`.
  EOT
  validation {
    condition     = var.id_length_limit == null ? true : var.id_length_limit >= 6 || var.id_length_limit == 0
    error_message = "The id_length_limit must be >= 6 if supplied (not null), or 0 for unlimited length."
  }
}

variable "label_key_case" {
  type        = string
  default     = null
  description = <<-EOT
    The letter case of label keys (`tag` names) (i.e. `name`, `namespace`, `environment`, `stage`, `attributes`) to use in `tags`.
    Possible values: `lower`, `title`, `upper`.
    Default value: `title`.
  EOT

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

variable "label_value_case" {
  type        = string
  default     = null
  description = <<-EOT
    The letter case of output label values (also used in `tags` and `id`).
    Possible values: `lower`, `title`, `upper` and `none` (no transformation).
    Default value: `lower`.
  EOT

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