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

package computeoptimizer

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/computeoptimizer/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Returns the optimization findings for an account. It returns the number of:
//   - Amazon EC2 instances in an account that are Underprovisioned ,
//     Overprovisioned , or Optimized .
//   - Auto Scaling groups in an account that are NotOptimized , or Optimized .
//   - Amazon EBS volumes in an account that are NotOptimized , or Optimized .
//   - Lambda functions in an account that are NotOptimized , or Optimized .
//   - Amazon ECS services in an account that are Underprovisioned ,
//     Overprovisioned , or Optimized .
func (c *Client) GetRecommendationSummaries(ctx context.Context, params *GetRecommendationSummariesInput, optFns ...func(*Options)) (*GetRecommendationSummariesOutput, error) {
	if params == nil {
		params = &GetRecommendationSummariesInput{}
	}

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

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

type GetRecommendationSummariesInput struct {

	// The ID of the Amazon Web Services account for which to return recommendation
	// summaries. If your account is the management account of an organization, use
	// this parameter to specify the member account for which you want to return
	// recommendation summaries. Only one account ID can be specified per request.
	AccountIds []string

	// The maximum number of recommendation summaries to return with a single request.
	// To retrieve the remaining results, make another request with the returned
	// nextToken value.
	MaxResults *int32

	// The token to advance to the next page of recommendation summaries.
	NextToken *string

	noSmithyDocumentSerde
}

type GetRecommendationSummariesOutput struct {

	// The token to use to advance to the next page of recommendation summaries. This
	// value is null when there are no more pages of recommendation summaries to
	// return.
	NextToken *string

	// An array of objects that summarize a recommendation.
	RecommendationSummaries []types.RecommendationSummary

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetRecommendationSummariesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpGetRecommendationSummaries{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpGetRecommendationSummaries{}, 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 = stack.Initialize.Add(newServiceMetadataMiddleware_opGetRecommendationSummaries(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
}

// GetRecommendationSummariesAPIClient is a client that implements the
// GetRecommendationSummaries operation.
type GetRecommendationSummariesAPIClient interface {
	GetRecommendationSummaries(context.Context, *GetRecommendationSummariesInput, ...func(*Options)) (*GetRecommendationSummariesOutput, error)
}

var _ GetRecommendationSummariesAPIClient = (*Client)(nil)

// GetRecommendationSummariesPaginatorOptions is the paginator options for
// GetRecommendationSummaries
type GetRecommendationSummariesPaginatorOptions struct {
	// The maximum number of recommendation summaries to return with a single request.
	// To retrieve the remaining results, make another request with the returned
	// nextToken value.
	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
}

// GetRecommendationSummariesPaginator is a paginator for
// GetRecommendationSummaries
type GetRecommendationSummariesPaginator struct {
	options   GetRecommendationSummariesPaginatorOptions
	client    GetRecommendationSummariesAPIClient
	params    *GetRecommendationSummariesInput
	nextToken *string
	firstPage bool
}

// NewGetRecommendationSummariesPaginator returns a new
// GetRecommendationSummariesPaginator
func NewGetRecommendationSummariesPaginator(client GetRecommendationSummariesAPIClient, params *GetRecommendationSummariesInput, optFns ...func(*GetRecommendationSummariesPaginatorOptions)) *GetRecommendationSummariesPaginator {
	if params == nil {
		params = &GetRecommendationSummariesInput{}
	}

	options := GetRecommendationSummariesPaginatorOptions{}
	if params.MaxResults != nil {
		options.Limit = *params.MaxResults
	}

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

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

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

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

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

	var limit *int32
	if p.options.Limit > 0 {
		limit = &p.options.Limit
	}
	params.MaxResults = limit

	result, err := p.client.GetRecommendationSummaries(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_opGetRecommendationSummaries(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "compute-optimizer",
		OperationName: "GetRecommendationSummaries",
	}
}