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

package swf

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/aws-sdk-go-v2/service/swf/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Returns the estimated number of decision tasks in the specified task list. The
// count returned is an approximation and isn't guaranteed to be exact. If you
// specify a task list that no decision task was ever scheduled in then 0 is
// returned. Access Control You can use IAM policies to control this action's
// access to Amazon SWF resources as follows:
//
// * Use a Resource element with the
// domain name to limit the action to only specified domains.
//
// * Use an Action
// element to allow or deny permission to call this action.
//
// * Constrain the
// taskList.name parameter by using a Condition element with the swf:taskList.name
// key to allow the action to access only certain task lists.
//
// If the caller
// doesn't have sufficient permissions to invoke the action, or the parameter
// values fall outside the specified constraints, the action fails. The associated
// event attribute's cause parameter is set to OPERATION_NOT_PERMITTED. For details
// and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows
// (https://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html)
// in the Amazon SWF Developer Guide.
func (c *Client) CountPendingDecisionTasks(ctx context.Context, params *CountPendingDecisionTasksInput, optFns ...func(*Options)) (*CountPendingDecisionTasksOutput, error) {
	if params == nil {
		params = &CountPendingDecisionTasksInput{}
	}

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

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

type CountPendingDecisionTasksInput struct {

	// The name of the domain that contains the task list.
	//
	// This member is required.
	Domain *string

	// The name of the task list.
	//
	// This member is required.
	TaskList *types.TaskList

	noSmithyDocumentSerde
}

// Contains the count of tasks in a task list.
type CountPendingDecisionTasksOutput struct {

	// The number of tasks in the task list.
	//
	// This member is required.
	Count int32

	// If set to true, indicates that the actual count was more than the maximum
	// supported by this API and the count returned is the truncated value.
	Truncated bool

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationCountPendingDecisionTasksMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpCountPendingDecisionTasks{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpCountPendingDecisionTasks{}, 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 = addOpCountPendingDecisionTasksValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opCountPendingDecisionTasks(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 = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	return nil
}

func newServiceMetadataMiddleware_opCountPendingDecisionTasks(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "swf",
		OperationName: "CountPendingDecisionTasks",
	}
}
