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

package workdocs

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

// Describes the specified users. You can describe all users or filter the results
// (for example, by status or organization). By default, Amazon WorkDocs returns
// the first 24 active or pending users. If there are more results, the response
// includes a marker that you can use to request the next set of results.
func (c *Client) DescribeUsers(ctx context.Context, params *DescribeUsersInput, optFns ...func(*Options)) (*DescribeUsersOutput, error) {
	if params == nil {
		params = &DescribeUsersInput{}
	}

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

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

type DescribeUsersInput struct {

	// Amazon WorkDocs authentication token. Not required when using Amazon Web
	// Services administrator credentials to access the API.
	AuthenticationToken *string

	// A comma-separated list of values. Specify "STORAGE_METADATA" to include the
	// user storage quota and utilization information.
	Fields *string

	// The state of the users. Specify "ALL" to include inactive users.
	Include types.UserFilterType

	// The maximum number of items to return.
	Limit *int32

	// The marker for the next set of results. (You received this marker from a
	// previous call.)
	Marker *string

	// The order for the results.
	Order types.OrderType

	// The ID of the organization.
	OrganizationId *string

	// A query to filter users by user name. Remember the following about the Userids
	// and Query parameters:
	//   - If you don't use either parameter, the API returns a paginated list of all
	//   users on the site.
	//   - If you use both parameters, the API ignores the Query parameter.
	//   - The Userid parameter only returns user names that match a corresponding user
	//   ID.
	//   - The Query parameter runs a "prefix" search for users by the GivenName ,
	//   SurName , or UserName fields included in a CreateUser (https://docs.aws.amazon.com/workdocs/latest/APIReference/API_CreateUser.html)
	//   API call. For example, querying on Ma returns Márcia Oliveira, María García,
	//   and Mateo Jackson. If you use multiple characters, the API only returns data
	//   that matches all characters. For example, querying on Ma J only returns Mateo
	//   Jackson.
	Query *string

	// The sorting criteria.
	Sort types.UserSortType

	// The IDs of the users.
	UserIds *string

	noSmithyDocumentSerde
}

type DescribeUsersOutput struct {

	// The marker to use when requesting the next set of results. If there are no
	// additional results, the string is empty.
	Marker *string

	// The total number of users included in the results.
	//
	// Deprecated: This member has been deprecated.
	TotalNumberOfUsers *int64

	// The users.
	Users []types.User

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationDescribeUsersMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestjson1_serializeOpDescribeUsers{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpDescribeUsers{}, 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_opDescribeUsers(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
}

// DescribeUsersAPIClient is a client that implements the DescribeUsers operation.
type DescribeUsersAPIClient interface {
	DescribeUsers(context.Context, *DescribeUsersInput, ...func(*Options)) (*DescribeUsersOutput, error)
}

var _ DescribeUsersAPIClient = (*Client)(nil)

// DescribeUsersPaginatorOptions is the paginator options for DescribeUsers
type DescribeUsersPaginatorOptions struct {
	// The maximum number of items to return.
	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
}

// DescribeUsersPaginator is a paginator for DescribeUsers
type DescribeUsersPaginator struct {
	options   DescribeUsersPaginatorOptions
	client    DescribeUsersAPIClient
	params    *DescribeUsersInput
	nextToken *string
	firstPage bool
}

// NewDescribeUsersPaginator returns a new DescribeUsersPaginator
func NewDescribeUsersPaginator(client DescribeUsersAPIClient, params *DescribeUsersInput, optFns ...func(*DescribeUsersPaginatorOptions)) *DescribeUsersPaginator {
	if params == nil {
		params = &DescribeUsersInput{}
	}

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

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

	return &DescribeUsersPaginator{
		options:   options,
		client:    client,
		params:    params,
		firstPage: true,
		nextToken: params.Marker,
	}
}

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

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

	params := *p.params
	params.Marker = p.nextToken

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

	result, err := p.client.DescribeUsers(ctx, &params, optFns...)
	if err != nil {
		return nil, err
	}
	p.firstPage = false

	prevToken := p.nextToken
	p.nextToken = result.Marker

	if p.options.StopOnDuplicateToken &&
		prevToken != nil &&
		p.nextToken != nil &&
		*prevToken == *p.nextToken {
		p.nextToken = nil
	}

	return result, nil
}

func newServiceMetadataMiddleware_opDescribeUsers(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "workdocs",
		OperationName: "DescribeUsers",
	}
}