variables.tf

variable "name" {
  type        = string
  default     = null
  description = "Name of SFTP server. Ignore it to generate a random name for server"
}

variable "sftp_type" {
  type        = string
  default     = "PUBLIC"
  description = "Type of SFTP server. **Valid values:** `PUBLIC`, `VPC` or `VPC_ENDPOINT`"
}

variable "storage_type" {
  type        = string
  default     = "S3"
  description = "Where to store the files. **Valid values:** `S3` or `EFS`"
}

variable "protocols" {
  type        = list(string)
  default     = ["SFTP"]
  description = "List of file transfer protocol(s) over which your FTP client can connect to your server endpoint. **Possible Values:** FTP, FTPS and SFTP"
}

variable "certificate_arn" {
  type        = string
  default     = null
  description = "ARN of ACM certificate. Required only in case of FTPS protocol"
}

variable "endpoint_details" {
  type = object({
    vpc_id                 = optional(string)
    vpc_endpoint_id        = optional(string)
    subnet_ids             = optional(list(string))
    security_group_ids     = optional(list(string))
    address_allocation_ids = optional(list(string))
  })
  default     = {}
  description = <<-EOT
    A block required to setup SFTP server if type is set to `VPC` or `VPC_ENDPOINT`
    ```{
      vpc_id                 = (Optional) ID of VPC in which SFTP server endpoint will be hosted. Required if endpoint type is set to VPC
      vpc_endpoint_id        = (Optional) The ID of VPC endpoint to use for hosting internal SFTP server. Required if endpoint type is set to VPC_ENDPOINT
      subnet_ids             = (Optional) List of subnets ids within the VPC for hosting SFTP server endpoint. Required if endpoint type is set to VPC
      security_group_ids     = (Optional) List of security groups to attach to the SFTP endpoint. Supported only if endpoint is to type VPC. If left blank for VPC, a security group with port 22 open to the world will be created and attached
      address_allocation_ids = (Optional) List of address allocation IDs to attach an Elastic IP address to your SFTP server endpoint. Supported only if endpoint type is set to VPC. If left blank for VPC, an EIP will be automatically created per subnet and attached
    }```
  EOT
}

variable "identity_provider_type" {
  type        = string
  default     = "SERVICE_MANAGED"
  description = "Mode of authentication to use for accessing the service. **Valid Values:** `SERVICE_MANAGED`, `API_GATEWAY`, `AWS_DIRECTORY_SERVICE` or `AWS_LAMBDA`"
}

variable "api_gw_url" {
  type        = string
  default     = null
  description = "URL of the service endpoint to authenticate users when `identity_provider_type` is of type `API_GATEWAY`"
}

variable "invocation_role" {
  type        = string
  default     = null
  description = "ARN of the IAM role to authenticate the user when `identity_provider_type` is set to `API_GATEWAY`"
}

variable "directory_id" {
  type        = string
  default     = null
  description = "ID of the directory service to authenticate users when `identity_provider_type` is of type `AWS_DIRECTORY_SERVICE`"
}

variable "function_arn" {
  type        = string
  default     = null
  description = "ARN of the lambda function to authenticate users when `identity_provider_type` is of type `AWS_LAMBDA`"
}

variable "logging_role" {
  type        = string
  default     = null
  description = "ARN of an IAM role to allow to write SFTP users activity to Amazon CloudWatch logs"
}

variable "cloudwatch_log_group_arns" {
  type        = set(string)
  default     = []
  description = "Set of ARN of the CloudWatch log group to which SFTP server will write JSON logs. Required if `enable_json_logging` is set to `true`"
}

variable "force_destroy" {
  type        = bool
  default     = true
  description = "Whether to delete all the users associated with server so that server can be deleted successfully. **Note:** Supported only if `identity_provider_type` is set to `SERVICE_MANAGED`"
}

variable "security_policy_name" {
  type        = string
  default     = "TransferSecurityPolicy-2023-05"
  description = "Specifies the name of the [security policy](https://docs.aws.amazon.com/transfer/latest/userguide/security-policies.html) to associate with the server"
}

variable "host_key" {
  type        = string
  default     = null
  description = "RSA private key that will be used to identify your server when clients connect to it over SFTP"
}

variable "pre_authentication_login_banner" {
  type        = string
  default     = null
  description = "Message to display to user when trying to connect to the server **before** authentication"
}

variable "post_authentication_login_banner" {
  type        = string
  default     = null
  description = "Message to display to user when trying to connect to the server **after** authentication"
}

variable "as2_transports" {
  type        = set(string)
  default     = null
  description = "Transport method to use for AS2 messages. **Valid values:** `HTTP`"
}

variable "passive_ip" {
  type        = string
  default     = null
  description = "Use passive IP (PASV) capability to attach the IP address of the firewall or the load balancer to your FTPS/FTP server"
}

variable "set_stat_option" {
  type        = string
  default     = null
  description = "Whether the server should ignore SETSTAT command. **Valid values:** `DEFAULT`, `ENABLE_NO_OP`"
}

variable "tls_session_resumption_mode" {
  type        = string
  default     = null
  description = "TLS session resumption mode provides a mechanism to resume recently negotiated encrypted TLS sessions between the client and the FTPS server. Using one of the TLS session resumption modes, you can customize how you want to your FTPS server to process TLS session resumption requests"
}

variable "hosted_zone" {
  type        = string
  default     = null
  description = "Hosted zone name to create DNS entry for SFTP server"
}

variable "sftp_sub_domain" {
  type        = string
  default     = "sftp"
  description = "DNS name for SFTP server. **NOTE: Only sub-domain name required. DO NOT provide entire URL**"
}

variable "sftp_users" {
  type        = map(string)
  default     = {}
  description = <<-EOT
    Map of users with key as username and value as their home directory. Home directory is the S3 bucket path which user should have access to
    ```{
      user = home_dir_path
    }```
  EOT
}

variable "sftp_users_ssh_key" {
  type        = map(string)
  default     = {}
  description = <<-EOT
    Map of users with key as username and value as their public SSH key
    ```{
      user = ssh_public_key_content
    }```
  EOT
}

variable "tags" {
  type        = map(string)
  default     = {}
  description = "A map of key value pair to assign to resources"
}