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

package lookoutvision

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

// Lists the Amazon Lookout for Vision projects in your AWS account that are in
// the AWS Region in which you call ListProjects . The ListProjects operation is
// eventually consistent. Recent calls to CreateProject and DeleteProject might
// take a while to appear in the response from ListProjects . This operation
// requires permissions to perform the lookoutvision:ListProjects operation.
func (c *Client) ListProjects(ctx context.Context, params *ListProjectsInput, optFns ...func(*Options)) (*ListProjectsOutput, error) {
	if params == nil {
		params = &ListProjectsInput{}
	}

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

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

type ListProjectsInput struct {

	// The maximum number of results to return per paginated call. The largest value
	// you can specify is 100. If you specify a value greater than 100, a
	// ValidationException error occurs. The default value is 100.
	MaxResults *int32

	// If the previous response was incomplete (because there is more data to
	// retrieve), Amazon Lookout for Vision returns a pagination token in the response.
	// You can use this pagination token to retrieve the next set of projects.
	NextToken *string

	noSmithyDocumentSerde
}

type ListProjectsOutput struct {

	// If the response is truncated, Amazon Lookout for Vision returns this token that
	// you can use in the subsequent request to retrieve the next set of projects.
	NextToken *string

	// A list of projects in your AWS account.
	Projects []types.ProjectMetadata

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationListProjectsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpListProjects{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpListProjects{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ListProjects"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); 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 = 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 = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListProjects(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
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}

// ListProjectsAPIClient is a client that implements the ListProjects operation.
type ListProjectsAPIClient interface {
	ListProjects(context.Context, *ListProjectsInput, ...func(*Options)) (*ListProjectsOutput, error)
}

var _ ListProjectsAPIClient = (*Client)(nil)

// ListProjectsPaginatorOptions is the paginator options for ListProjects
type ListProjectsPaginatorOptions struct {
	// The maximum number of results to return per paginated call. The largest value
	// you can specify is 100. If you specify a value greater than 100, a
	// ValidationException error occurs. The default value is 100.
	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
}

// ListProjectsPaginator is a paginator for ListProjects
type ListProjectsPaginator struct {
	options   ListProjectsPaginatorOptions
	client    ListProjectsAPIClient
	params    *ListProjectsInput
	nextToken *string
	firstPage bool
}

// NewListProjectsPaginator returns a new ListProjectsPaginator
func NewListProjectsPaginator(client ListProjectsAPIClient, params *ListProjectsInput, optFns ...func(*ListProjectsPaginatorOptions)) *ListProjectsPaginator {
	if params == nil {
		params = &ListProjectsInput{}
	}

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

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

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

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

// NextPage retrieves the next ListProjects page.
func (p *ListProjectsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListProjectsOutput, 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.ListProjects(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_opListProjects(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "ListProjects",
	}
}