require "helper"
require "inspec/resource"
require "resources/aws/aws_vpc"

require "resource_support/aws"
require "resources/aws/aws_vpc"

# MAVSB = MockAwsVpcSingularBackend
# Abbreviation not used outside this file

#=============================================================================#
#                            Constructor Tests
#=============================================================================#
class AwsVpcConstructorTest < Minitest::Test

  def setup
    AwsVpc::BackendFactory.select(MAVSB::Empty)
  end

  def test_empty_params_ok
    AwsVpc.new
  end

  def test_accepts_vpc_id_as_scalar_eight_sign
    AwsVpc.new("vpc-12345678")
  end

  def test_accepts_vpc_id_as_scalar
    AwsVpc.new("vpc-12345678987654321")
  end

  def test_accepts_vpc_id_as_hash_eight_sign
    AwsVpc.new(vpc_id: "vpc-1234abcd")
  end

  def test_accepts_vpc_id_as_hash
    AwsVpc.new(vpc_id: "vpc-abcd123454321dcba")
  end

  def test_rejects_unrecognized_params
    assert_raises(ArgumentError) { AwsVpc.new(shoe_size: 9) }
  end

  def test_rejects_invalid_vpc_id
    assert_raises(ArgumentError) { AwsVpc.new("vpc-rofl") }
  end
end

#=============================================================================#
#                               Search / Recall
#=============================================================================#
class AwsVpcRecallTest < Minitest::Test

  def setup
    AwsVpc::BackendFactory.select(MAVSB::Basic)
  end

  def test_search_hit_via_default_works
    assert AwsVpc.new.exists?
  end

  def test_search_hit_via_scalar_works
    assert AwsVpc.new("vpc-12344321").exists?
  end

  def test_search_hit_via_hash_works
    assert AwsVpc.new(vpc_id: "vpc-12344321").exists?
  end

  def test_search_miss_is_not_an_exception_eight_sign
    refute AwsVpc.new(vpc_id: "vpc-00000000").exists?
  end

  def test_search_miss_is_not_an_exception
    refute AwsVpc.new(vpc_id: "vpc-00000000000000000").exists?
  end
end

#=============================================================================#
#                               Properties
#=============================================================================#
class AwsVpcPropertiesTest < Minitest::Test

  def setup
    AwsVpc::BackendFactory.select(MAVSB::Basic)
  end

  def test_property_vpc_id
    assert_equal("vpc-aaaabbbb", AwsVpc.new("vpc-aaaabbbb").vpc_id)
    # Even on a miss, identifiers should be preserved
    assert_equal("vpc-00000000", AwsVpc.new(vpc_id: "vpc-00000000").vpc_id)
  end

  def test_property_cidr_block
    assert_equal("10.0.0.0/16", AwsVpc.new("vpc-aaaabbbb").cidr_block)
    assert_nil(AwsVpc.new("vpc-00000000").cidr_block)
  end

  def test_property_dhcp_options_id
    assert_equal("dopt-aaaabbbb", AwsVpc.new("vpc-aaaabbbb").dhcp_options_id)
    assert_nil(AwsVpc.new("vpc-00000000").dhcp_options_id)
  end

  def test_property_state
    assert_equal("available", AwsVpc.new("vpc-12344321").state)
    assert_nil(AwsVpc.new("vpc-00000000").state)
  end

  def test_property_instance_tenancy
    assert_equal("default", AwsVpc.new("vpc-12344321").instance_tenancy)
    assert_nil(AwsVpc.new("vpc-00000000").instance_tenancy)
  end
end

#=============================================================================#
#                               Matchers
#=============================================================================#
class AwsVpcMatchersTest < Minitest::Test

  def setup
    AwsVpc::BackendFactory.select(MAVSB::Basic)
  end

  def test_matcher_default_positive
    assert AwsVpc.new("vpc-aaaabbbb").default?
  end

  def test_matcher_default_negative
    refute AwsVpc.new("vpc-12344321").default?
  end

end

#=============================================================================#
#                               Test Fixtures
#=============================================================================#
module MAVSB
  class Empty < AwsBackendBase
    def describe_vpcs(query)
      OpenStruct.new(vpcs: [])
    end
  end

  class Basic < AwsBackendBase
    def describe_vpcs(query)
      fixtures = [
        OpenStruct.new({
          cidr_block: "10.0.0.0/16",
          dhcp_options_id: "dopt-aaaabbbb",
          state: "available",
          vpc_id: "vpc-aaaabbbb",
          instance_tenancy: "default",
          is_default: true,
        }),
        OpenStruct.new({
          cidr_block: "10.1.0.0/16",
          dhcp_options_id: "dopt-43211234",
          state: "available",
          vpc_id: "vpc-12344321",
          instance_tenancy: "default",
          is_default: false,
        }),
      ]

      selected = fixtures.select do |vpc|
        query[:filters].all? do |filter|
          if filter[:name].eql? "isDefault"
            filter[:name] = "is_default"
          end
          filter[:values].include?(vpc[filter[:name].tr("-", "_")].to_s)
        end
      end

      OpenStruct.new({ vpcs: selected })
    end
  end

end