data "aws_iam_policy_document" "assume_role_policy" {
  statement {
    effect = "Allow"

    actions = [
      "sts:AssumeRole",
    ]

    principals {
      type = "AWS"

      identifiers = concat(var.additional_roles, [var.fargate_task_role])
    }
  }
}

data "aws_iam_policy_document" "input_bucket_putonly_policy" {
  statement {
    effect = "Allow"

    actions = [
      "s3:PutObject",
      "s3:PutObjectAcl",
      "s3:PutObjectTagging",
      "s3:PutObjectVersionAcl",
      "s3:PutObjectVersionTagging",
    ]

    resources = [
      "${aws_s3_bucket.input_bucket.arn}/*",
    ]
  }
}

resource "aws_iam_policy" "input_bucket_putonly_policy" {
  name        = "S3-${aws_s3_bucket.input_bucket.id}-WO"
  description = "Write access to asset-trasncoder input bucket"
  policy      = data.aws_iam_policy_document.input_bucket_putonly_policy.json
}