provider "aws" {
  region = var.region
}

# Terraform backends cannot contain interpolations
terraform {
  backend "s3" {
    bucket  = "orcd-terraform-state"
    key     = "prod/distribution/automated-encoding-orders/terraform.tfstate"
    region  = "us-east-1"
    encrypt = "true"
  }
}

data "aws_caller_identity" "current" {}

# SNS policy document
data "aws_iam_policy_document" "automated_encoding_order_policy_document" {
  statement {
    effect    = "Allow"
    resources = [
      "arn:aws:sns:us-east-1:${data.aws_caller_identity.current.account_id}:${var.environment}-automated_encoding_orders",
      "arn:aws:sns:us-east-1:${data.aws_caller_identity.current.account_id}:${var.environment}-filtered_catalog",
      "arn:aws:sns:us-east-1:${data.aws_caller_identity.current.account_id}:${var.environment}-error_corrections",
      "arn:aws:sns:us-east-1:${data.aws_caller_identity.current.account_id}:${var.environment}-carveout",
    ]
    actions = [
      "sns:ConfirmSubscription",
      "sns:ListSubscriptionsByTopic",
      "sns:GetTopicAttributes",
      "sns:Subscribe",
      "sns:ConfirmSubscription",
    ]
  }

  statement {
    effect    = "Allow"
      resources = [
        "*",
      ]
      actions   = [
        "sns:Unsubscribe",
        "sns:GetSubscriptionAttributes",
        "sns:ListSubscriptions",
      ]
  }
}

# SNS policy.
resource "aws_iam_policy" "automated_encoding_order_policy" {
  name   = "SNS-${var.environment}-${var.service_name}-policy"
  policy = data.aws_iam_policy_document.automated_encoding_order_policy_document.json
}

# IAM group for automated encoding order functionality
resource "aws_iam_group" "distribution_automated_encoding_orders" {
  name = "distribution-${var.service_name}"
}

resource "aws_iam_group_policy_attachment" "distribution_automated_encoding_orders_attachment" {
  group      = aws_iam_group.distribution_automated_encoding_orders.name
  policy_arn = aws_iam_policy.automated_encoding_order_policy.arn
}