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

package migrationhuborchestrator

import (
	"context"
	"fmt"
	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/migrationhuborchestrator/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// List the steps in a template.
func (c *Client) ListTemplateSteps(ctx context.Context, params *ListTemplateStepsInput, optFns ...func(*Options)) (*ListTemplateStepsOutput, error) {
	if params == nil {
		params = &ListTemplateStepsInput{}
	}

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

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

type ListTemplateStepsInput struct {

	// The ID of the step group.
	//
	// This member is required.
	StepGroupId *string

	// The ID of the template.
	//
	// This member is required.
	TemplateId *string

	// The maximum number of results that can be returned.
	MaxResults int32

	// The pagination token.
	NextToken *string

	noSmithyDocumentSerde
}

type ListTemplateStepsOutput struct {

	// The pagination token.
	NextToken *string

	// The list of summaries of steps in a template.
	TemplateStepSummaryList []types.TemplateStepSummary

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationListTemplateStepsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestjson1_serializeOpListTemplateSteps{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListTemplateSteps{}, 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 = addOpListTemplateStepsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListTemplateSteps(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
}

// ListTemplateStepsAPIClient is a client that implements the ListTemplateSteps
// operation.
type ListTemplateStepsAPIClient interface {
	ListTemplateSteps(context.Context, *ListTemplateStepsInput, ...func(*Options)) (*ListTemplateStepsOutput, error)
}

var _ ListTemplateStepsAPIClient = (*Client)(nil)

// ListTemplateStepsPaginatorOptions is the paginator options for ListTemplateSteps
type ListTemplateStepsPaginatorOptions struct {
	// The maximum number of results that can be returned.
	Limit int32

	// Set to true if pagination should stop if the service returns a pagination token
	// that matches the most recent token provided to the service.
	StopOnDuplicateToken bool
}

// ListTemplateStepsPaginator is a paginator for ListTemplateSteps
type ListTemplateStepsPaginator struct {
	options   ListTemplateStepsPaginatorOptions
	client    ListTemplateStepsAPIClient
	params    *ListTemplateStepsInput
	nextToken *string
	firstPage bool
}

// NewListTemplateStepsPaginator returns a new ListTemplateStepsPaginator
func NewListTemplateStepsPaginator(client ListTemplateStepsAPIClient, params *ListTemplateStepsInput, optFns ...func(*ListTemplateStepsPaginatorOptions)) *ListTemplateStepsPaginator {
	if params == nil {
		params = &ListTemplateStepsInput{}
	}

	options := ListTemplateStepsPaginatorOptions{}
	if params.MaxResults != 0 {
		options.Limit = params.MaxResults
	}

	for _, fn := range optFns {
		fn(&options)
	}

	return &ListTemplateStepsPaginator{
		options:   options,
		client:    client,
		params:    params,
		firstPage: true,
		nextToken: params.NextToken,
	}
}

// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListTemplateStepsPaginator) HasMorePages() bool {
	return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}

// NextPage retrieves the next ListTemplateSteps page.
func (p *ListTemplateStepsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListTemplateStepsOutput, error) {
	if !p.HasMorePages() {
		return nil, fmt.Errorf("no more pages available")
	}

	params := *p.params
	params.NextToken = p.nextToken

	params.MaxResults = p.options.Limit

	result, err := p.client.ListTemplateSteps(ctx, &params, optFns...)
	if err != nil {
		return nil, err
	}
	p.firstPage = false

	prevToken := p.nextToken
	p.nextToken = result.NextToken

	if p.options.StopOnDuplicateToken &&
		prevToken != nil &&
		p.nextToken != nil &&
		*prevToken == *p.nextToken {
		p.nextToken = nil
	}

	return result, nil
}

func newServiceMetadataMiddleware_opListTemplateSteps(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "migrationhub-orchestrator",
		OperationName: "ListTemplateSteps",
	}
}