package aws

import (
	"fmt"
	"reflect"
	"testing"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/cloudtrail"
	"github.com/hashicorp/terraform/helper/resource"
	"github.com/hashicorp/terraform/terraform"
)

func TestDiffCloudtrailTags(t *testing.T) {
	cases := []struct {
		Old, New       map[string]interface{}
		Create, Remove map[string]string
	}{
		// Basic add/remove
		{
			Old: map[string]interface{}{
				"foo": "bar",
			},
			New: map[string]interface{}{
				"bar": "baz",
			},
			Create: map[string]string{
				"bar": "baz",
			},
			Remove: map[string]string{
				"foo": "bar",
			},
		},

		// Modify
		{
			Old: map[string]interface{}{
				"foo": "bar",
			},
			New: map[string]interface{}{
				"foo": "baz",
			},
			Create: map[string]string{
				"foo": "baz",
			},
			Remove: map[string]string{
				"foo": "bar",
			},
		},
	}

	for i, tc := range cases {
		c, r := diffTagsCloudtrail(tagsFromMapCloudtrail(tc.Old), tagsFromMapCloudtrail(tc.New))
		cm := tagsToMapCloudtrail(c)
		rm := tagsToMapCloudtrail(r)
		if !reflect.DeepEqual(cm, tc.Create) {
			t.Fatalf("%d: bad create: %#v", i, cm)
		}
		if !reflect.DeepEqual(rm, tc.Remove) {
			t.Fatalf("%d: bad remove: %#v", i, rm)
		}
	}
}

func TestIgnoringTagsCloudtrail(t *testing.T) {
	var ignoredTags []*cloudtrail.Tag
	ignoredTags = append(ignoredTags, &cloudtrail.Tag{
		Key:   aws.String("aws:cloudformation:logical-id"),
		Value: aws.String("foo"),
	})
	ignoredTags = append(ignoredTags, &cloudtrail.Tag{
		Key:   aws.String("aws:foo:bar"),
		Value: aws.String("baz"),
	})
	for _, tag := range ignoredTags {
		if !tagIgnoredCloudtrail(tag) {
			t.Fatalf("Tag %v with value %v not ignored, but should be!", *tag.Key, *tag.Value)
		}
	}
}

// testAccCheckCloudTrailCheckTags can be used to check the tags on a trail
func testAccCheckCloudTrailCheckTags(tags *[]*cloudtrail.Tag, expectedTags map[string]string) resource.TestCheckFunc {
	return func(s *terraform.State) error {
		if !reflect.DeepEqual(expectedTags, tagsToMapCloudtrail(*tags)) {
			return fmt.Errorf("Tags mismatch.\nExpected: %#v\nGiven: %#v",
				expectedTags, tagsToMapCloudtrail(*tags))
		}
		return nil
	}
}