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

package dynamodb

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

// Removes the association of tags from an Amazon DynamoDB resource. You can call
// UntagResource up to five times per second, per account. For an overview on
// tagging DynamoDB resources, see Tagging for DynamoDB
// (https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Tagging.html)
// in the Amazon DynamoDB Developer Guide.
func (c *Client) UntagResource(ctx context.Context, params *UntagResourceInput, optFns ...func(*Options)) (*UntagResourceOutput, error) {
	if params == nil {
		params = &UntagResourceInput{}
	}

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

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

type UntagResourceInput struct {

	// The DynamoDB resource that the tags will be removed from. This value is an
	// Amazon Resource Name (ARN).
	//
	// This member is required.
	ResourceArn *string

	// A list of tag keys. Existing tags of the resource whose keys are members of this
	// list will be removed from the DynamoDB resource.
	//
	// This member is required.
	TagKeys []string

	noSmithyDocumentSerde
}

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationUntagResourceMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpUntagResource{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpUntagResource{}, 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); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addOpUntagResourceDiscoverEndpointMiddleware(stack, options, c); err != nil {
		return err
	}
	if err = addOpUntagResourceValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opUntagResource(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addValidateResponseChecksum(stack, options); err != nil {
		return err
	}
	if err = addAcceptEncodingGzip(stack, options); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	return nil
}

func addOpUntagResourceDiscoverEndpointMiddleware(stack *middleware.Stack, o Options, c *Client) error {
	return stack.Serialize.Insert(&internalEndpointDiscovery.DiscoverEndpoint{
		Options: []func(*internalEndpointDiscovery.DiscoverEndpointOptions){
			func(opt *internalEndpointDiscovery.DiscoverEndpointOptions) {
				opt.DisableHTTPS = o.EndpointOptions.DisableHTTPS
				opt.Logger = o.Logger
			},
		},
		DiscoverOperation:            c.fetchOpUntagResourceDiscoverEndpoint,
		EndpointDiscoveryEnableState: o.EndpointDiscovery.EnableEndpointDiscovery,
		EndpointDiscoveryRequired:    false,
	}, "ResolveEndpoint", middleware.After)
}

func (c *Client) fetchOpUntagResourceDiscoverEndpoint(ctx context.Context, input interface{}, optFns ...func(*internalEndpointDiscovery.DiscoverEndpointOptions)) (internalEndpointDiscovery.WeightedAddress, error) {
	in, ok := input.(*UntagResourceInput)
	if !ok {
		return internalEndpointDiscovery.WeightedAddress{}, fmt.Errorf("unknown input type %T", input)
	}
	_ = in

	identifierMap := make(map[string]string, 0)

	key := fmt.Sprintf("DynamoDB.%v", identifierMap)

	if v, ok := c.endpointCache.Get(key); ok {
		return v, nil
	}

	discoveryOperationInput := &DescribeEndpointsInput{}

	opt := internalEndpointDiscovery.DiscoverEndpointOptions{}
	for _, fn := range optFns {
		fn(&opt)
	}

	go c.handleEndpointDiscoveryFromService(ctx, discoveryOperationInput, key, opt)
	return internalEndpointDiscovery.WeightedAddress{}, nil
}

func newServiceMetadataMiddleware_opUntagResource(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "dynamodb",
		OperationName: "UntagResource",
	}
}
