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

package cloudformation

import (
	"context"
	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"
)

// Returns the stack policy for a specified stack. If a stack doesn't have a
// policy, a null value is returned.
func (c *Client) GetStackPolicy(ctx context.Context, params *GetStackPolicyInput, optFns ...func(*Options)) (*GetStackPolicyOutput, error) {
	if params == nil {
		params = &GetStackPolicyInput{}
	}

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

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

// The input for the GetStackPolicy action.
type GetStackPolicyInput struct {

	// The name or unique stack ID that's associated with the stack whose policy you
	// want to get.
	//
	// This member is required.
	StackName *string

	noSmithyDocumentSerde
}

// The output for the GetStackPolicy action.
type GetStackPolicyOutput struct {

	// Structure containing the stack policy body. (For more information, go to
	// Prevent Updates to Stack Resources (https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html)
	// in the CloudFormation User Guide.)
	StackPolicyBody *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetStackPolicyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsquery_serializeOpGetStackPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpGetStackPolicy{}, 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 = addOpGetStackPolicyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetStackPolicy(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
}

func newServiceMetadataMiddleware_opGetStackPolicy(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "cloudformation",
		OperationName: "GetStackPolicy",
	}
}