Create multiple buckets using same statefile and terraform script about terraform-google-cloud-storage HOT 6 CLOSED

terraform {
  backend "gcs" {
    bucket = "test-bucket-state"
    prefix = "terraform/test-bucket/"  
  }
}

module "usis-auto-test-bucket" {
 source  = "./modules/storage"
 names   = "${var.bucket_name}"
 project = "project_id_value
  labels =  merge(var.tf_labels, {
    app_id              = "" # app_id must be from SNow CMDB
    component_labels    = "none"
    tier                = "app"
    costcenter         = "$1234"
    name                = "none" # Name of the Microservice
  })

  versioning = var.versioning
  encryption = {
    default_kms_key_name = var.kms_key_name_auto
  }
  lifecycle_rule = [
    {
      condition = {
        matches_storage_class = ["REGIONAL"]
      }
      action = {
        type          = "Delete"      
      }
    }
  ] 
}

resource "google_storage_bucket" "bucket" {
  count         = var.enabled ? 1 : 0
  name          = var.names
  project       =  var.project

  dynamic "versioning" {
    for_each = var.versioning
    content {
      enabled = versioning.key == "enabled" ? versioning.value : false
    }
  }

  labels = merge(var.labels, {
    terraform_module_version = "v1-0-4"
    terraform_module_git     = "bitbucket_terraform_repo"
    is_public = "no"
  })

  dynamic "encryption" {
    for_each = var.encryption
    content {
      default_kms_key_name = encryption.key == "default_kms_key_name" ? encryption.value : null
    }
  }

  dynamic "lifecycle_rule" {
    for_each = var.lifecycle_rule
    content {
      action {
        type          = lookup(lifecycle_rule.value["action"], "type", null)
        storage_class = lookup(lifecycle_rule.value["action"], "storage_class", null)
      }
      condition {
        age                   = lookup(lifecycle_rule.value["condition"], "age", null)
        created_before        = lookup(lifecycle_rule.value["condition"], "created_before", null)
        with_state            = lookup(lifecycle_rule.value["condition"], "with_state", null)
        matches_storage_class = lookup(lifecycle_rule.value["condition"], "matches_storage_class", null)
        num_newer_versions    = lookup(lifecycle_rule.value["condition"], "num_newer_versions", null)
      }
    }
  }
}

Template interpolation syntax is still used to construct strings from
expressions when the template includes multiple interpolation sequences or a
mixture of literal strings and interpolations. This deprecation applies only
to templates that consist entirely of a single interpolation sequence.

Error: Invalid expression

<value for var.names> line 1:
  (source code not available)

Expected the start of an expression, but found an invalid expression token.
Error: No value for required variable on vars.tf line 7: variable "names"

The root module input variable "names" is not set, and has no default value.
Use a -var or -var-file command line argument to provide a value for this
variable.

module "usis-auto-test-bucket" {
 source  = "./modules/storage"
 names   = ["test-bucket-1", "test-bucket-2"]
.
.
.
}

resource "google_storage_bucket" "bucket" {
  count         = var.enabled ? 1 : 0
  name          = "${var.names}"
.
.
.
}

variable "names" {
  description = "Names of the buckets to create."
  type        = list(string)
}