// Code generated by smithy-go-codegen DO NOT EDIT.

package kms

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Gets the names of the key policies that are attached to a KMS key. This
// operation is designed to get policy names that you can use in a GetKeyPolicy
// operation. However, the only valid policy name is default . Cross-account use:
// No. You cannot perform this operation on a KMS key in a different Amazon Web
// Services account. Required permissions: kms:ListKeyPolicies (https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html)
// (key policy) Related operations:
//   - GetKeyPolicy
//   - PutKeyPolicy
func (c *Client) ListKeyPolicies(ctx context.Context, params *ListKeyPoliciesInput, optFns ...func(*Options)) (*ListKeyPoliciesOutput, error) {
	if params == nil {
		params = &ListKeyPoliciesInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "ListKeyPolicies", params, optFns, c.addOperationListKeyPoliciesMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*ListKeyPoliciesOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type ListKeyPoliciesInput struct {

	// Gets the names of key policies for the specified KMS key. Specify the key ID or
	// key ARN of the KMS key. For example:
	//   - Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
	//   - Key ARN:
	//   arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
	// To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey .
	//
	// This member is required.
	KeyId *string

	// Use this parameter to specify the maximum number of items to return. When this
	// value is present, KMS does not return more than the specified number of items,
	// but it might return fewer. This value is optional. If you include a value, it
	// must be between 1 and 1000, inclusive. If you do not include a value, it
	// defaults to 100. Only one policy can be attached to a key.
	Limit *int32

	// Use this parameter in a subsequent request after you receive a response with
	// truncated results. Set it to the value of NextMarker from the truncated
	// response you just received.
	Marker *string

	noSmithyDocumentSerde
}

type ListKeyPoliciesOutput struct {

	// When Truncated is true, this element is present and contains the value to use
	// for the Marker parameter in a subsequent request.
	NextMarker *string

	// A list of key policy names. The only valid value is default .
	PolicyNames []string

	// A flag that indicates whether there are more items in the list. When this value
	// is true, the list in this response is truncated. To get more items, pass the
	// value of the NextMarker element in thisresponse to the Marker parameter in a
	// subsequent request.
	Truncated bool

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationListKeyPoliciesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListKeyPolicies{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListKeyPolicies{}, middleware.After)
	if err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
		return err
	}
	if err = addRetryMiddlewares(stack, options); err != nil {
		return err
	}
	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
		return err
	}
	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addOpListKeyPoliciesValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListKeyPolicies(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = awsmiddleware.AddRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	return nil
}

// ListKeyPoliciesAPIClient is a client that implements the ListKeyPolicies
// operation.
type ListKeyPoliciesAPIClient interface {
	ListKeyPolicies(context.Context, *ListKeyPoliciesInput, ...func(*Options)) (*ListKeyPoliciesOutput, error)
}

var _ ListKeyPoliciesAPIClient = (*Client)(nil)

// ListKeyPoliciesPaginatorOptions is the paginator options for ListKeyPolicies
type ListKeyPoliciesPaginatorOptions struct {
	// Use this parameter to specify the maximum number of items to return. When this
	// value is present, KMS does not return more than the specified number of items,
	// but it might return fewer. This value is optional. If you include a value, it
	// must be between 1 and 1000, inclusive. If you do not include a value, it
	// defaults to 100. Only one policy can be attached to a key.
	Limit int32

	// Set to true if pagination should stop if the service returns a pagination token
	// that matches the most recent token provided to the service.
	StopOnDuplicateToken bool
}

// ListKeyPoliciesPaginator is a paginator for ListKeyPolicies
type ListKeyPoliciesPaginator struct {
	options   ListKeyPoliciesPaginatorOptions
	client    ListKeyPoliciesAPIClient
	params    *ListKeyPoliciesInput
	nextToken *string
	firstPage bool
}

// NewListKeyPoliciesPaginator returns a new ListKeyPoliciesPaginator
func NewListKeyPoliciesPaginator(client ListKeyPoliciesAPIClient, params *ListKeyPoliciesInput, optFns ...func(*ListKeyPoliciesPaginatorOptions)) *ListKeyPoliciesPaginator {
	if params == nil {
		params = &ListKeyPoliciesInput{}
	}

	options := ListKeyPoliciesPaginatorOptions{}
	if params.Limit != nil {
		options.Limit = *params.Limit
	}

	for _, fn := range optFns {
		fn(&options)
	}

	return &ListKeyPoliciesPaginator{
		options:   options,
		client:    client,
		params:    params,
		firstPage: true,
		nextToken: params.Marker,
	}
}

// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListKeyPoliciesPaginator) HasMorePages() bool {
	return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}

// NextPage retrieves the next ListKeyPolicies page.
func (p *ListKeyPoliciesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListKeyPoliciesOutput, error) {
	if !p.HasMorePages() {
		return nil, fmt.Errorf("no more pages available")
	}

	params := *p.params
	params.Marker = p.nextToken

	var limit *int32
	if p.options.Limit > 0 {
		limit = &p.options.Limit
	}
	params.Limit = limit

	result, err := p.client.ListKeyPolicies(ctx, &params, optFns...)
	if err != nil {
		return nil, err
	}
	p.firstPage = false

	prevToken := p.nextToken
	p.nextToken = result.NextMarker

	if p.options.StopOnDuplicateToken &&
		prevToken != nil &&
		p.nextToken != nil &&
		*prevToken == *p.nextToken {
		p.nextToken = nil
	}

	return result, nil
}

func newServiceMetadataMiddleware_opListKeyPolicies(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "kms",
		OperationName: "ListKeyPolicies",
	}
}