// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.

package lexruntimeservice

import (
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/client"
	"github.com/aws/aws-sdk-go/aws/client/metadata"
	"github.com/aws/aws-sdk-go/aws/request"
	"github.com/aws/aws-sdk-go/aws/signer/v4"
	"github.com/aws/aws-sdk-go/private/protocol/restjson"
)

// Amazon Lex provides both build and runtime endpoints. Each endpoint provides
// a set of operations (API). Your application uses the runtime API to understand
// user utterances (user input text or voice). For example, suppose user says
// "I want pizza", your application sends this input to Amazon Lex using the
// runtime API. Amazon Lex recognizes that the user request is for the OrderPizza
// intent (one of the intents defined in the application). Then Amazon Lex engages
// in user conversation on behalf of the application to elicit required information
// (slot values, such as pizza size and crust type), and then performs fulfillment
// activity (that you configured when you created the application). You use
// the build-time API to create and manage your Amazon Lex applications. For
// a list of build-time operations, see the build-time API. .
// The service client's operations are safe to be used concurrently.
// It is not safe to mutate any of the client's properties though.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28
type LexRuntimeService struct {
	*client.Client
}

// Used for custom client initialization logic
var initClient func(*client.Client)

// Used for custom request initialization logic
var initRequest func(*request.Request)

// Service information constants
const (
	ServiceName = "runtime.lex" // Service endpoint prefix API calls made to.
	EndpointsID = ServiceName   // Service ID for Regions and Endpoints metadata.
)

// New creates a new instance of the LexRuntimeService client with a session.
// If additional configuration is needed for the client instance use the optional
// aws.Config parameter to add your extra config.
//
// Example:
//     // Create a LexRuntimeService client from just a session.
//     svc := lexruntimeservice.New(mySession)
//
//     // Create a LexRuntimeService client with additional configuration
//     svc := lexruntimeservice.New(mySession, aws.NewConfig().WithRegion("us-west-2"))
func New(p client.ConfigProvider, cfgs ...*aws.Config) *LexRuntimeService {
	c := p.ClientConfig(EndpointsID, cfgs...)
	return newClient(*c.Config, c.Handlers, c.Endpoint, c.SigningRegion, c.SigningName)
}

// newClient creates, initializes and returns a new service client instance.
func newClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegion, signingName string) *LexRuntimeService {
	if len(signingName) == 0 {
		signingName = "lex"
	}
	svc := &LexRuntimeService{
		Client: client.New(
			cfg,
			metadata.ClientInfo{
				ServiceName:   ServiceName,
				SigningName:   signingName,
				SigningRegion: signingRegion,
				Endpoint:      endpoint,
				APIVersion:    "2016-11-28",
				JSONVersion:   "1.1",
			},
			handlers,
		),
	}

	// Handlers
	svc.Handlers.Sign.PushBackNamed(v4.SignRequestHandler)
	svc.Handlers.Build.PushBackNamed(restjson.BuildHandler)
	svc.Handlers.Unmarshal.PushBackNamed(restjson.UnmarshalHandler)
	svc.Handlers.UnmarshalMeta.PushBackNamed(restjson.UnmarshalMetaHandler)
	svc.Handlers.UnmarshalError.PushBackNamed(restjson.UnmarshalErrorHandler)

	// Run custom client initialization if present
	if initClient != nil {
		initClient(svc.Client)
	}

	return svc
}

// newRequest creates a new request for a LexRuntimeService operation and runs any
// custom request initialization.
func (c *LexRuntimeService) newRequest(op *request.Operation, params, data interface{}) *request.Request {
	req := c.NewRequest(op, params, data)

	// Run custom request initialization if present
	if initRequest != nil {
		initRequest(req)
	}

	return req
}
