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

package iam

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"
)

// Attaches the specified managed policy to the specified IAM role. When you
// attach a managed policy to a role, the managed policy becomes part of the role's
// permission (access) policy.
//
// You cannot use a managed policy as the role's trust policy. The role's trust
// policy is created at the same time as the role, using [CreateRole]CreateRole . You can
// update a role's trust policy using [UpdateAssumerolePolicy]UpdateAssumerolePolicy .
//
// Use this operation to attach a managed policy to a role. To embed an inline
// policy in a role, use [PutRolePolicy]PutRolePolicy . For more information about policies, see [Managed policies and inline policies]
// in the IAM User Guide.
//
// As a best practice, you can validate your IAM policies. To learn more, see [Validating IAM policies] in
// the IAM User Guide.
//
// [Validating IAM policies]: https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_policy-validator.html
// [UpdateAssumerolePolicy]: https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateAssumeRolePolicy.html
// [PutRolePolicy]: https://docs.aws.amazon.com/IAM/latest/APIReference/API_PutRolePolicy.html
// [CreateRole]: https://docs.aws.amazon.com/IAM/latest/APIReference/API_CreateRole.html
// [Managed policies and inline policies]: https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-vs-inline.html
func (c *Client) AttachRolePolicy(ctx context.Context, params *AttachRolePolicyInput, optFns ...func(*Options)) (*AttachRolePolicyOutput, error) {
	if params == nil {
		params = &AttachRolePolicyInput{}
	}

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

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

type AttachRolePolicyInput struct {

	// The Amazon Resource Name (ARN) of the IAM policy you want to attach.
	//
	// For more information about ARNs, see [Amazon Resource Names (ARNs)] in the Amazon Web Services General
	// Reference.
	//
	// [Amazon Resource Names (ARNs)]: https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
	//
	// This member is required.
	PolicyArn *string

	// The name (friendly name, not ARN) of the role to attach the policy to.
	//
	// This parameter allows (through its [regex pattern]) a string of characters consisting of upper
	// and lowercase alphanumeric characters with no spaces. You can also include any
	// of the following characters: _+=,.@-
	//
	// [regex pattern]: http://wikipedia.org/wiki/regex
	//
	// This member is required.
	RoleName *string

	noSmithyDocumentSerde
}

type AttachRolePolicyOutput struct {
	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationAttachRolePolicyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsquery_serializeOpAttachRolePolicy{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpAttachRolePolicy{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "AttachRolePolicy"); 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 = addOpAttachRolePolicyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opAttachRolePolicy(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_opAttachRolePolicy(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "AttachRolePolicy",
	}
}
