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

package appstream

import (
	"context"
	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/appstream/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Retrieves a list that describes the streaming sessions for a specified stack and
// fleet. If a UserId is provided for the stack and fleet, only streaming sessions
// for that user are described. If an authentication type is not provided, the
// default is to authenticate users using a streaming URL.
func (c *Client) DescribeSessions(ctx context.Context, params *DescribeSessionsInput, optFns ...func(*Options)) (*DescribeSessionsOutput, error) {
	if params == nil {
		params = &DescribeSessionsInput{}
	}

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

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

type DescribeSessionsInput struct {

	// The name of the fleet. This value is case-sensitive.
	//
	// This member is required.
	FleetName *string

	// The name of the stack. This value is case-sensitive.
	//
	// This member is required.
	StackName *string

	// The authentication method. Specify API for a user authenticated using a
	// streaming URL or SAML for a SAML federated user. The default is to authenticate
	// users using a streaming URL.
	AuthenticationType types.AuthenticationType

	// The size of each page of results. The default value is 20 and the maximum value
	// is 50.
	Limit *int32

	// The pagination token to use to retrieve the next page of results for this
	// operation. If this value is null, it retrieves the first page.
	NextToken *string

	// The user identifier (ID). If you specify a user ID, you must also specify the
	// authentication type.
	UserId *string

	noSmithyDocumentSerde
}

type DescribeSessionsOutput struct {

	// The pagination token to use to retrieve the next page of results for this
	// operation. If there are no more pages, this value is null.
	NextToken *string

	// Information about the streaming sessions.
	Sessions []types.Session

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationDescribeSessionsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpDescribeSessions{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpDescribeSessions{}, 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); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addOpDescribeSessionsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeSessions(options.Region), middleware.Before); 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
}

func newServiceMetadataMiddleware_opDescribeSessions(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "appstream",
		OperationName: "DescribeSessions",
	}
}
