// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.

package cloudformation

import (
	"context"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/internal/awsutil"
)

// The input for the ListChangeSets action.
type ListChangeSetsInput struct {
	_ struct{} `type:"structure"`

	// A string (provided by the ListChangeSets response output) that identifies
	// the next page of change sets that you want to retrieve.
	NextToken *string `min:"1" type:"string"`

	// The name or the Amazon Resource Name (ARN) of the stack for which you want
	// to list change sets.
	//
	// StackName is a required field
	StackName *string `min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s ListChangeSetsInput) String() string {
	return awsutil.Prettify(s)
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ListChangeSetsInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "ListChangeSetsInput"}
	if s.NextToken != nil && len(*s.NextToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("NextToken", 1))
	}

	if s.StackName == nil {
		invalidParams.Add(aws.NewErrParamRequired("StackName"))
	}
	if s.StackName != nil && len(*s.StackName) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StackName", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// The output for the ListChangeSets action.
type ListChangeSetsOutput struct {
	_ struct{} `type:"structure"`

	// If the output exceeds 1 MB, a string that identifies the next page of change
	// sets. If there is no additional page, this value is null.
	NextToken *string `min:"1" type:"string"`

	// A list of ChangeSetSummary structures that provides the ID and status of
	// each change set for the specified stack.
	Summaries []ChangeSetSummary `type:"list"`
}

// String returns the string representation
func (s ListChangeSetsOutput) String() string {
	return awsutil.Prettify(s)
}

const opListChangeSets = "ListChangeSets"

// ListChangeSetsRequest returns a request value for making API operation for
// AWS CloudFormation.
//
// Returns the ID and status of each active change set for a stack. For example,
// AWS CloudFormation lists change sets that are in the CREATE_IN_PROGRESS or
// CREATE_PENDING state.
//
//    // Example sending a request using ListChangeSetsRequest.
//    req := client.ListChangeSetsRequest(params)
//    resp, err := req.Send(context.TODO())
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/ListChangeSets
func (c *Client) ListChangeSetsRequest(input *ListChangeSetsInput) ListChangeSetsRequest {
	op := &aws.Operation{
		Name:       opListChangeSets,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"NextToken"},
			OutputTokens:    []string{"NextToken"},
			LimitToken:      "",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &ListChangeSetsInput{}
	}

	req := c.newRequest(op, input, &ListChangeSetsOutput{})

	return ListChangeSetsRequest{Request: req, Input: input, Copy: c.ListChangeSetsRequest}
}

// ListChangeSetsRequest is the request type for the
// ListChangeSets API operation.
type ListChangeSetsRequest struct {
	*aws.Request
	Input *ListChangeSetsInput
	Copy  func(*ListChangeSetsInput) ListChangeSetsRequest
}

// Send marshals and sends the ListChangeSets API request.
func (r ListChangeSetsRequest) Send(ctx context.Context) (*ListChangeSetsResponse, error) {
	r.Request.SetContext(ctx)
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	resp := &ListChangeSetsResponse{
		ListChangeSetsOutput: r.Request.Data.(*ListChangeSetsOutput),
		response:             &aws.Response{Request: r.Request},
	}

	return resp, nil
}

// NewListChangeSetsRequestPaginator returns a paginator for ListChangeSets.
// Use Next method to get the next page, and CurrentPage to get the current
// response page from the paginator. Next will return false, if there are
// no more pages, or an error was encountered.
//
// Note: This operation can generate multiple requests to a service.
//
//   // Example iterating over pages.
//   req := client.ListChangeSetsRequest(input)
//   p := cloudformation.NewListChangeSetsRequestPaginator(req)
//
//   for p.Next(context.TODO()) {
//       page := p.CurrentPage()
//   }
//
//   if err := p.Err(); err != nil {
//       return err
//   }
//
func NewListChangeSetsPaginator(req ListChangeSetsRequest) ListChangeSetsPaginator {
	return ListChangeSetsPaginator{
		Pager: aws.Pager{
			NewRequest: func(ctx context.Context) (*aws.Request, error) {
				var inCpy *ListChangeSetsInput
				if req.Input != nil {
					tmp := *req.Input
					inCpy = &tmp
				}

				newReq := req.Copy(inCpy)
				newReq.SetContext(ctx)
				return newReq.Request, nil
			},
		},
	}
}

// ListChangeSetsPaginator is used to paginate the request. This can be done by
// calling Next and CurrentPage.
type ListChangeSetsPaginator struct {
	aws.Pager
}

func (p *ListChangeSetsPaginator) CurrentPage() *ListChangeSetsOutput {
	return p.Pager.CurrentPage().(*ListChangeSetsOutput)
}

// ListChangeSetsResponse is the response type for the
// ListChangeSets API operation.
type ListChangeSetsResponse struct {
	*ListChangeSetsOutput

	response *aws.Response
}

// SDKResponseMetdata returns the response metadata for the
// ListChangeSets request.
func (r *ListChangeSetsResponse) SDKResponseMetdata() *aws.Response {
	return r.response
}