variables.tf

// variables.tf

variable "project_name" {
  description = "Name of the project"
  type        = string
}

variable "environment" {
  description = "Environment (e.g., prod, dev, test)"
  type        = string
}

variable "name_prefix" {
  description = "Prefix for resource names (if not provided, will use project-environment pattern)"
  type        = string
  default     = ""
}

variable "table_name" {
  description = "Name of the DynamoDB table (if empty, will use project-environment pattern)"
  type        = string
  default     = ""
}

variable "tags" {
  description = "Additional tags for all resources"
  type        = map(string)
  default     = {}
}

variable "billing_mode" {
  description = "Controls how you are charged for read and write throughput and how you manage capacity (PROVISIONED or PAY_PER_REQUEST)"
  type        = string
  default     = "PAY_PER_REQUEST"
  validation {
    condition     = contains(["PROVISIONED", "PAY_PER_REQUEST"], var.billing_mode)
    error_message = "Billing mode must be one of: PROVISIONED, PAY_PER_REQUEST."
  }
}

variable "hash_key" {
  description = "The attribute to use as the hash (partition) key"
  type        = string
}

variable "range_key" {
  description = "The attribute to use as the range (sort) key"
  type        = string
  default     = null
}

variable "attributes" {
  description = "List of nested attribute definitions. Only required for hash_key and range_key attributes"
  type = list(object({
    name = string
    type = string
  }))
}

variable "global_secondary_indexes" {
  description = "Describe a GSI for the table"
  type = list(object({
    name               = string
    hash_key           = string
    range_key          = optional(string)
    projection_type    = string
    non_key_attributes = optional(list(string))
    read_capacity      = optional(number)
    write_capacity     = optional(number)
  }))
  default = []
}

variable "local_secondary_indexes" {
  description = "Describe an LSI for the table"
  type = list(object({
    name               = string
    range_key          = string
    projection_type    = string
    non_key_attributes = optional(list(string))
  }))
  default = []
}

variable "point_in_time_recovery_enabled" {
  description = "Whether to enable point-in-time recovery"
  type        = bool
  default     = true # Best practice: always enable for data protection
}

variable "kms_key_arn" {
  description = "The ARN of the KMS key to use for server-side encryption"
  type        = string
  default     = "" # If empty, uses AWS managed key
}

variable "deletion_protection_enabled" {
  description = "Whether to enable deletion protection for the table"
  type        = bool
  default     = true # Security first: prevent accidental deletion
}

variable "resource_policy" {
  description = "The JSON-formatted resource-based policy to apply to the DynamoDB table"
  type        = string
  default     = ""
}

variable "stream_enabled" {
  description = "Indicates whether Streams are to be enabled"
  type        = bool
  default     = false
}

variable "stream_view_type" {
  description = "When an item in the table is modified, StreamViewType determines what information is written to the table's stream"
  type        = string
  default     = ""
}

variable "ttl_enabled" {
  description = "Indicates whether TTL is enabled"
  type        = bool
  default     = false
}

variable "ttl_attribute_name" {
  description = "The name of the table attribute to store the TTL timestamp in"
  type        = string
  default     = ""
}