Conditionals with inline attributes in Terraform

main.tf

resource "aws_dynamodb_table" "one_attribute" {
  count = "${replace(replace(var.num_attributes, "1", "1"), "/^[^1]$/", 0)}"

  name = "${var.name}"

  attribute {
    name = "${var.first_attribute_name}"
    type = "${var.first_attribute_type}"
  }
}

resource "aws_dynamodb_table" "two_attributes" {
  count = "${replace(replace(var.num_attributes, "2", "1"), "/^[^2]$/", 0)}"

  name = "${var.name}"

  attribute {
    name = "${var.first_attribute_name}"
    type = "${var.first_attribute_type}"
  }

  attribute {
    name = "${var.second_attribute_name}"
    type = "${var.second_attribute_type}"
  }
}

resource "aws_dynamodb_table" "three_attributes" {
  count = "${replace(replace(var.num_attributes, "3", "1"), "/^[^3]$/", 0)}"

  name = "${var.name}"

  attribute {
    name = "${var.first_attribute_name}"
    type = "${var.first_attribute_type}"
  }

  attribute {
    name = "${var.second_attribute_name}"
    type = "${var.second_attribute_type}"
  }

  attribute {
    name = "${var.third_attribute_name}"
    type = "${var.third_attribute_type}"
  }
}