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

package redshiftserverless

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

// Returns a list of snapshots.
func (c *Client) ListSnapshots(ctx context.Context, params *ListSnapshotsInput, optFns ...func(*Options)) (*ListSnapshotsOutput, error) {
	if params == nil {
		params = &ListSnapshotsInput{}
	}

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

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

type ListSnapshotsInput struct {

	// The timestamp showing when the snapshot creation finished.
	EndTime *time.Time

	// An optional parameter that specifies the maximum number of results to return.
	// You can use nextToken to display the next page of results.
	MaxResults *int32

	// The Amazon Resource Name (ARN) of the namespace from which to list all
	// snapshots.
	NamespaceArn *string

	// The namespace from which to list all snapshots.
	NamespaceName *string

	// If nextToken is returned, there are more results available. The value of
	// nextToken is a unique pagination token for each page. Make the call again using
	// the returned token to retrieve the next page.
	NextToken *string

	// The owner Amazon Web Services account of the snapshot.
	OwnerAccount *string

	// The time when the creation of the snapshot was initiated.
	StartTime *time.Time

	noSmithyDocumentSerde
}

type ListSnapshotsOutput struct {

	// If nextToken is returned, there are more results available. The value of
	// nextToken is a unique pagination token for each page. Make the call again using
	// the returned token to retrieve the next page.
	NextToken *string

	// All of the returned snapshot objects.
	Snapshots []types.Snapshot

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationListSnapshotsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListSnapshots{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListSnapshots{}, 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_opListSnapshots(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
}

// ListSnapshotsAPIClient is a client that implements the ListSnapshots operation.
type ListSnapshotsAPIClient interface {
	ListSnapshots(context.Context, *ListSnapshotsInput, ...func(*Options)) (*ListSnapshotsOutput, error)
}

var _ ListSnapshotsAPIClient = (*Client)(nil)

// ListSnapshotsPaginatorOptions is the paginator options for ListSnapshots
type ListSnapshotsPaginatorOptions struct {
	// An optional parameter that specifies the maximum number of results to return.
	// You can use nextToken to display the next page of results.
	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
}

// ListSnapshotsPaginator is a paginator for ListSnapshots
type ListSnapshotsPaginator struct {
	options   ListSnapshotsPaginatorOptions
	client    ListSnapshotsAPIClient
	params    *ListSnapshotsInput
	nextToken *string
	firstPage bool
}

// NewListSnapshotsPaginator returns a new ListSnapshotsPaginator
func NewListSnapshotsPaginator(client ListSnapshotsAPIClient, params *ListSnapshotsInput, optFns ...func(*ListSnapshotsPaginatorOptions)) *ListSnapshotsPaginator {
	if params == nil {
		params = &ListSnapshotsInput{}
	}

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

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

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

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

// NextPage retrieves the next ListSnapshots page.
func (p *ListSnapshotsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListSnapshotsOutput, 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.ListSnapshots(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_opListSnapshots(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "redshift-serverless",
		OperationName: "ListSnapshots",
	}
}