add acct local to conditionally create mock config param

Author: alexnuttall

infrastructure/terraform/components/acct/locals.tf

@@ -14,4 +14,7 @@ locals {
     for az_index, az in data.aws_availability_zones.available.names :
     cidrsubnet(var.vpc_cidr, max(var.vpc_subnet_cidr_bits.private, local.required_bits_private), az_index + length(data.aws_availability_zones.available.names))
   ]
+
+  mock_letter_supplier_name     = "WTMMOCK"
+  use_sftp_letter_supplier_mock = lookup(var.letter_suppliers, local.mock_letter_supplier_name, null) != null
 }

infrastructure/terraform/components/acct/ssm_parameter_sftp_mock_config.tf

@@ -1,4 +1,6 @@
 resource "aws_ssm_parameter" "sftp_mock_config" {
+  count = local.use_sftp_letter_supplier_mock ? 1 : 0
+
   name = format(
     "/%s/sftp-mock-config",
     local.csi,

infrastructure/terraform/components/acct/variables.tf

@@ -104,3 +104,12 @@ variable "vpc_subnet_cidr_bits" {
     private = 3  # Larger subnets for private resources, 3 creates /19 subnets over 3x Az
   }
 }
+
+variable "letter_suppliers" {
+  type = map(object({
+    enable_polling   = bool
+    default_supplier = optional(bool)
+  }))
+  description = "Letter suppliers enabled in the environment"
+  default     = {}
+}