// 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 DescribeStacks action.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/DescribeStacksInput
type DescribeStacksInput struct {
	_ struct{} `type:"structure"`

	// A string that identifies the next page of stacks that you want to retrieve.
	NextToken *string `min:"1" type:"string"`

	// The name or the unique stack ID that is associated with the stack, which
	// are not always interchangeable:
	//
	//    * Running stacks: You can specify either the stack's name or its unique
	//    stack ID.
	//
	//    * Deleted stacks: You must specify the unique stack ID.
	//
	// Default: There is no default value.
	StackName *string `type:"string"`
}

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

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

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

// The output for a DescribeStacks action.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/DescribeStacksOutput
type DescribeStacksOutput struct {
	_ struct{} `type:"structure"`

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

	// A list of stack structures.
	Stacks []Stack `type:"list"`
}

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

const opDescribeStacks = "DescribeStacks"

// DescribeStacksRequest returns a request value for making API operation for
// AWS CloudFormation.
//
// Returns the description for the specified stack; if no stack name was specified,
// then it returns the description for all the stacks created.
//
// If the stack does not exist, an AmazonCloudFormationException is returned.
//
//    // Example sending a request using DescribeStacksRequest.
//    req := client.DescribeStacksRequest(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/DescribeStacks
func (c *Client) DescribeStacksRequest(input *DescribeStacksInput) DescribeStacksRequest {
	op := &aws.Operation{
		Name:       opDescribeStacks,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"NextToken"},
			OutputTokens:    []string{"NextToken"},
			LimitToken:      "",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &DescribeStacksInput{}
	}

	req := c.newRequest(op, input, &DescribeStacksOutput{})
	return DescribeStacksRequest{Request: req, Input: input, Copy: c.DescribeStacksRequest}
}

// DescribeStacksRequest is the request type for the
// DescribeStacks API operation.
type DescribeStacksRequest struct {
	*aws.Request
	Input *DescribeStacksInput
	Copy  func(*DescribeStacksInput) DescribeStacksRequest
}

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

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

	return resp, nil
}

// NewDescribeStacksRequestPaginator returns a paginator for DescribeStacks.
// 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.DescribeStacksRequest(input)
//   p := cloudformation.NewDescribeStacksRequestPaginator(req)
//
//   for p.Next(context.TODO()) {
//       page := p.CurrentPage()
//   }
//
//   if err := p.Err(); err != nil {
//       return err
//   }
//
func NewDescribeStacksPaginator(req DescribeStacksRequest) DescribeStacksPaginator {
	return DescribeStacksPaginator{
		Pager: aws.Pager{
			NewRequest: func(ctx context.Context) (*aws.Request, error) {
				var inCpy *DescribeStacksInput
				if req.Input != nil {
					tmp := *req.Input
					inCpy = &tmp
				}

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

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

func (p *DescribeStacksPaginator) CurrentPage() *DescribeStacksOutput {
	return p.Pager.CurrentPage().(*DescribeStacksOutput)
}

// DescribeStacksResponse is the response type for the
// DescribeStacks API operation.
type DescribeStacksResponse struct {
	*DescribeStacksOutput

	response *aws.Response
}

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