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

package lambda

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

// Returns the permission policy for a version of an [Lambda layer]. For more information, see AddLayerVersionPermission.
//
// [Lambda layer]: https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html
func (c *Client) GetLayerVersionPolicy(ctx context.Context, params *GetLayerVersionPolicyInput, optFns ...func(*Options)) (*GetLayerVersionPolicyOutput, error) {
	if params == nil {
		params = &GetLayerVersionPolicyInput{}
	}

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

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

type GetLayerVersionPolicyInput struct {

	// The name or Amazon Resource Name (ARN) of the layer.
	//
	// This member is required.
	LayerName *string

	// The version number.
	//
	// This member is required.
	VersionNumber *int64

	noSmithyDocumentSerde
}

type GetLayerVersionPolicyOutput struct {

	// The policy document.
	Policy *string

	// A unique identifier for the current revision of the policy.
	RevisionId *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetLayerVersionPolicyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpGetLayerVersionPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpGetLayerVersionPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetLayerVersionPolicy"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options, c); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addSpanRetryLoop(stack, options); 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 = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); err != nil {
		return err
	}
	if err = addOpGetLayerVersionPolicyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetLayerVersionPolicy(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = 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
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addInterceptBeforeRetryLoop(stack, options); err != nil {
		return err
	}
	if err = addInterceptAttempt(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

func newServiceMetadataMiddleware_opGetLayerVersionPolicy(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "GetLayerVersionPolicy",
	}
}
