// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.

package lexruntimeservice

import (
	"io"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awsutil"
	"github.com/aws/aws-sdk-go/aws/request"
	"github.com/aws/aws-sdk-go/aws/signer/v4"
)

const opPostContent = "PostContent"

// PostContentRequest generates a "aws/request.Request" representing the
// client's request for the PostContent operation. The "output" return
// value can be used to capture response data after the request's "Send" method
// is called.
//
// See PostContent for usage and error information.
//
// Creating a request object using this method should be used when you want to inject
// custom logic into the request's lifecycle using a custom handler, or if you want to
// access properties on the request object before or after sending the request. If
// you just want the service response, call the PostContent method directly
// instead.
//
// Note: You must call the "Send" method on the returned request object in order
// to execute the request.
//
//    // Example sending a request using the PostContentRequest method.
//    req, resp := client.PostContentRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContent
func (c *LexRuntimeService) PostContentRequest(input *PostContentInput) (req *request.Request, output *PostContentOutput) {
	op := &request.Operation{
		Name:       opPostContent,
		HTTPMethod: "POST",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/content",
	}

	if input == nil {
		input = &PostContentInput{}
	}

	output = &PostContentOutput{}
	req = c.newRequest(op, input, output)
	req.Handlers.Sign.Remove(v4.SignRequestHandler)
	handler := v4.BuildNamedHandler("v4.CustomSignerHandler", v4.WithUnsignedPayload)
	req.Handlers.Sign.PushFrontNamed(handler)
	return
}

// PostContent API operation for Amazon Lex Runtime Service.
//
// Sends user input (text or speech) to Amazon Lex. Clients use this API to
// send requests to Amazon Lex at runtime. Amazon Lex interprets the user input
// using the machine learning model that it built for the bot.
//
// In response, Amazon Lex returns the next message to convey to the user. Consider
// the following example messages:
//
//    *  For a user input "I would like a pizza," Amazon Lex might return a
//    response with a message eliciting slot data (for example, PizzaSize):
//    "What size pizza would you like?".
//
//    *  After the user provides all of the pizza order information, Amazon
//    Lex might return a response with a message to get user confirmation: "Order
//    the pizza?".
//
//    *  After the user replies "Yes" to the confirmation prompt, Amazon Lex
//    might return a conclusion statement: "Thank you, your cheese pizza has
//    been ordered.".
//
// Not all Amazon Lex messages require a response from the user. For example,
// conclusion statements do not require a response. Some messages require only
// a yes or no response. In addition to the message, Amazon Lex provides additional
// context about the message in the response that you can use to enhance client
// behavior, such as displaying the appropriate client user interface. Consider
// the following examples:
//
//    *  If the message is to elicit slot data, Amazon Lex returns the following
//    context information:
//
// x-amz-lex-dialog-state header set to ElicitSlot
//
// x-amz-lex-intent-name header set to the intent name in the current context
//
//
// x-amz-lex-slot-to-elicit header set to the slot name for which the message
//    is eliciting information
//
// x-amz-lex-slots header set to a map of slots configured for the intent with
//    their current values
//
//    *  If the message is a confirmation prompt, the x-amz-lex-dialog-state
//    header is set to Confirmation and the x-amz-lex-slot-to-elicit header
//    is omitted.
//
//    *  If the message is a clarification prompt configured for the intent,
//    indicating that the user intent is not understood, the x-amz-dialog-state
//    header is set to ElicitIntent and the x-amz-slot-to-elicit header is omitted.
//
//
// In addition, Amazon Lex also returns your application-specific sessionAttributes.
// For more information, see Managing Conversation Context (http://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html).
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation PostContent for usage and error information.
//
// Returned Error Codes:
//   * ErrCodeNotFoundException "NotFoundException"
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * ErrCodeBadRequestException "BadRequestException"
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed.
//
//   * ErrCodeLimitExceededException "LimitExceededException"
//   Exceeded a limit.
//
//   * ErrCodeInternalFailureException "InternalFailureException"
//   Internal service error. Retry the call.
//
//   * ErrCodeConflictException "ConflictException"
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
//   * ErrCodeUnsupportedMediaTypeException "UnsupportedMediaTypeException"
//   The Content-Type header (PostContent API) has an invalid value.
//
//   * ErrCodeNotAcceptableException "NotAcceptableException"
//   The accept header in the request does not have a valid value.
//
//   * ErrCodeRequestTimeoutException "RequestTimeoutException"
//   The input speech is too long.
//
//   * ErrCodeDependencyFailedException "DependencyFailedException"
//   One of the downstream dependencies, such as AWS Lambda or Amazon Polly, threw
//   an exception. For example, if Amazon Lex does not have sufficient permissions
//   to call a Lambda function, it results in Lambda throwing an exception.
//
//   * ErrCodeBadGatewayException "BadGatewayException"
//   Either the Amazon Lex bot is still building, or one of the dependent services
//   (Amazon Polly, AWS Lambda) failed with an internal service error.
//
//   * ErrCodeLoopDetectedException "LoopDetectedException"
//   Lambda fulfilment function returned DelegateDialogAction to Amazon Lex without
//   changing any slot values.
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContent
func (c *LexRuntimeService) PostContent(input *PostContentInput) (*PostContentOutput, error) {
	req, out := c.PostContentRequest(input)
	return out, req.Send()
}

// PostContentWithContext is the same as PostContent with the addition of
// the ability to pass a context and additional request options.
//
// See PostContent for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) PostContentWithContext(ctx aws.Context, input *PostContentInput, opts ...request.Option) (*PostContentOutput, error) {
	req, out := c.PostContentRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

const opPostText = "PostText"

// PostTextRequest generates a "aws/request.Request" representing the
// client's request for the PostText operation. The "output" return
// value can be used to capture response data after the request's "Send" method
// is called.
//
// See PostText for usage and error information.
//
// Creating a request object using this method should be used when you want to inject
// custom logic into the request's lifecycle using a custom handler, or if you want to
// access properties on the request object before or after sending the request. If
// you just want the service response, call the PostText method directly
// instead.
//
// Note: You must call the "Send" method on the returned request object in order
// to execute the request.
//
//    // Example sending a request using the PostTextRequest method.
//    req, resp := client.PostTextRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostText
func (c *LexRuntimeService) PostTextRequest(input *PostTextInput) (req *request.Request, output *PostTextOutput) {
	op := &request.Operation{
		Name:       opPostText,
		HTTPMethod: "POST",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/text",
	}

	if input == nil {
		input = &PostTextInput{}
	}

	output = &PostTextOutput{}
	req = c.newRequest(op, input, output)
	return
}

// PostText API operation for Amazon Lex Runtime Service.
//
// Sends user input (text-only) to Amazon Lex. Client applications can use this
// API to send requests to Amazon Lex at runtime. Amazon Lex then interprets
// the user input using the machine learning model it built for the bot.
//
// In response, Amazon Lex returns the next message to convey to the user an
// optional responseCard to display. Consider the following example messages:
//
//    *  For a user input "I would like a pizza", Amazon Lex might return a
//    response with a message eliciting slot data (for example, PizzaSize):
//    "What size pizza would you like?"
//
//    *  After the user provides all of the pizza order information, Amazon
//    Lex might return a response with a message to obtain user confirmation
//    "Proceed with the pizza order?".
//
//    *  After the user replies to a confirmation prompt with a "yes", Amazon
//    Lex might return a conclusion statement: "Thank you, your cheese pizza
//    has been ordered.".
//
// Not all Amazon Lex messages require a user response. For example, a conclusion
// statement does not require a response. Some messages require only a "yes"
// or "no" user response. In addition to the message, Amazon Lex provides additional
// context about the message in the response that you might use to enhance client
// behavior, for example, to display the appropriate client user interface.
// These are the slotToElicit, dialogState, intentName, and slots fields in
// the response. Consider the following examples:
//
//    * If the message is to elicit slot data, Amazon Lex returns the following
//    context information:
//
// dialogState set to ElicitSlot
//
// intentName set to the intent name in the current context
//
// slotToElicit set to the slot name for which the message is eliciting information
//
//
// slots set to a map of slots, configured for the intent, with currently known
//    values
//
//    *  If the message is a confirmation prompt, the dialogState is set to
//    ConfirmIntent and SlotToElicit is set to null.
//
//    * If the message is a clarification prompt (configured for the intent)
//    that indicates that user intent is not understood, the dialogState is
//    set to ElicitIntent and slotToElicit is set to null.
//
// In addition, Amazon Lex also returns your application-specific sessionAttributes.
// For more information, see Managing Conversation Context (http://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html).
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation PostText for usage and error information.
//
// Returned Error Codes:
//   * ErrCodeNotFoundException "NotFoundException"
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * ErrCodeBadRequestException "BadRequestException"
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed.
//
//   * ErrCodeLimitExceededException "LimitExceededException"
//   Exceeded a limit.
//
//   * ErrCodeInternalFailureException "InternalFailureException"
//   Internal service error. Retry the call.
//
//   * ErrCodeConflictException "ConflictException"
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
//   * ErrCodeDependencyFailedException "DependencyFailedException"
//   One of the downstream dependencies, such as AWS Lambda or Amazon Polly, threw
//   an exception. For example, if Amazon Lex does not have sufficient permissions
//   to call a Lambda function, it results in Lambda throwing an exception.
//
//   * ErrCodeBadGatewayException "BadGatewayException"
//   Either the Amazon Lex bot is still building, or one of the dependent services
//   (Amazon Polly, AWS Lambda) failed with an internal service error.
//
//   * ErrCodeLoopDetectedException "LoopDetectedException"
//   Lambda fulfilment function returned DelegateDialogAction to Amazon Lex without
//   changing any slot values.
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostText
func (c *LexRuntimeService) PostText(input *PostTextInput) (*PostTextOutput, error) {
	req, out := c.PostTextRequest(input)
	return out, req.Send()
}

// PostTextWithContext is the same as PostText with the addition of
// the ability to pass a context and additional request options.
//
// See PostText for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) PostTextWithContext(ctx aws.Context, input *PostTextInput, opts ...request.Option) (*PostTextOutput, error) {
	req, out := c.PostTextRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

// Represents an option to be shown on the client platform (Facebook, Slack,
// etc.)
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/Button
type Button struct {
	_ struct{} `type:"structure"`

	// Text that is visible to the user on the button.
	//
	// Text is a required field
	Text *string `locationName:"text" min:"1" type:"string" required:"true"`

	// The value sent to Amazon Lex when a user chooses the button. For example,
	// consider button text "NYC." When the user chooses the button, the value sent
	// can be "New York City."
	//
	// Value is a required field
	Value *string `locationName:"value" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s Button) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s Button) GoString() string {
	return s.String()
}

// SetText sets the Text field's value.
func (s *Button) SetText(v string) *Button {
	s.Text = &v
	return s
}

// SetValue sets the Value field's value.
func (s *Button) SetValue(v string) *Button {
	s.Value = &v
	return s
}

// Represents an option rendered to the user when a prompt is shown. It could
// be an image, a button, a link, or text.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/GenericAttachment
type GenericAttachment struct {
	_ struct{} `type:"structure"`

	// The URL of an attachment to the response card.
	AttachmentLinkUrl *string `locationName:"attachmentLinkUrl" min:"1" type:"string"`

	// The list of options to show to the user.
	Buttons []*Button `locationName:"buttons" type:"list"`

	// The URL of an image that is displayed to the user.
	ImageUrl *string `locationName:"imageUrl" min:"1" type:"string"`

	// The subtitle shown below the title.
	SubTitle *string `locationName:"subTitle" min:"1" type:"string"`

	// The title of the option.
	Title *string `locationName:"title" min:"1" type:"string"`
}

// String returns the string representation
func (s GenericAttachment) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GenericAttachment) GoString() string {
	return s.String()
}

// SetAttachmentLinkUrl sets the AttachmentLinkUrl field's value.
func (s *GenericAttachment) SetAttachmentLinkUrl(v string) *GenericAttachment {
	s.AttachmentLinkUrl = &v
	return s
}

// SetButtons sets the Buttons field's value.
func (s *GenericAttachment) SetButtons(v []*Button) *GenericAttachment {
	s.Buttons = v
	return s
}

// SetImageUrl sets the ImageUrl field's value.
func (s *GenericAttachment) SetImageUrl(v string) *GenericAttachment {
	s.ImageUrl = &v
	return s
}

// SetSubTitle sets the SubTitle field's value.
func (s *GenericAttachment) SetSubTitle(v string) *GenericAttachment {
	s.SubTitle = &v
	return s
}

// SetTitle sets the Title field's value.
func (s *GenericAttachment) SetTitle(v string) *GenericAttachment {
	s.Title = &v
	return s
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContentRequest
type PostContentInput struct {
	_ struct{} `type:"structure" payload:"InputStream"`

	// You pass this value as the Accept HTTP header.
	//
	// The message Amazon Lex returns in the response can be either text or speech
	// based on the Accept HTTP header value in the request.
	//
	//    *  If the value is text/plain; charset=utf-8, Amazon Lex returns text
	//    in the response.
	//
	//    *  If the value begins with audio/, Amazon Lex returns speech in the response.
	//    Amazon Lex uses Amazon Polly to generate the speech (using the configuration
	//    you specified in the Accept header). For example, if you specify audio/mpeg
	//    as the value, Amazon Lex returns speech in the MPEG format.
	//
	// The following are the accepted values:
	//
	// audio/mpeg
	//
	// audio/ogg
	//
	// audio/pcm
	//
	// text/plain; charset=utf-8
	//
	// audio/* (defaults to mpeg)
	Accept *string `location:"header" locationName:"Accept" type:"string"`

	// Alias of the Amazon Lex bot.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// Name of the Amazon Lex bot.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// You pass this values as the Content-Type HTTP header.
	//
	// Indicates the audio format or text. The header value must start with one
	// of the following prefixes:
	//
	//    * PCM format
	//
	// audio/l16; rate=16000; channels=1
	//
	// audio/x-l16; sample-rate=16000; channel-count=1
	//
	//    * Opus format
	//
	// audio/x-cbr-opus-with-preamble; preamble-size=0; bit-rate=1; frame-size-milliseconds=1.1
	//
	//    * Text format
	//
	// text/plain; charset=utf-8
	//
	// ContentType is a required field
	ContentType *string `location:"header" locationName:"Content-Type" type:"string" required:"true"`

	// User input in PCM or Opus audio format or text format as described in the
	// Content-Type HTTP header.
	//
	// InputStream is a required field
	InputStream io.ReadSeeker `locationName:"inputStream" type:"blob" required:"true"`

	// You pass this value in the x-amz-lex-session-attributes HTTP header. The
	// value must be map (keys and values must be strings) that is JSON serialized
	// and then base64 encoded.
	//
	// A session represents dialog between a user and Amazon Lex. At runtime, a
	// client application can pass contextual information, in the request to Amazon
	// Lex. For example,
	//
	//    * You might use session attributes to track the requestID of user requests.
	//
	//    * In Getting Started Exercise 1, the example bot uses the price session
	//    attribute to maintain the price of flowers ordered (for example, "price":25).
	//    The code hook (Lambda function) sets this attribute based on the type
	//    of flowers ordered. For more information, see Review the Details of Information
	//    Flow (http://docs.aws.amazon.com/lex/latest/dg/gs-bp-details-after-lambda.html).
	//
	//
	//    * In the BookTrip bot exercise, the bot uses the currentReservation session
	//    attribute to maintains the slot data during the in-progress conversation
	//    to book a hotel or book a car. For more information, see Details of Information
	//    Flow (http://docs.aws.amazon.com/lex/latest/dg/book-trip-detail-flow.html).
	//
	//
	// Amazon Lex passes these session attributes to the Lambda functions configured
	// for the intent In the your Lambda function, you can use the session attributes
	// for initialization and customization (prompts). Some examples are:
	//
	//    *  Initialization - In a pizza ordering bot, if you pass user location
	//    (for example, "Location : 111 Maple Street"), then your Lambda function
	//    might use this information to determine the closest pizzeria to place
	//    the order (and perhaps set the storeAddress slot value as well).
	//
	//  Personalized prompts - For example, you can configure prompts to refer to
	//    the user by name (for example, "Hey [firstName], what toppings would you
	//    like?"). You can pass the user's name as a session attribute ("firstName":
	//    "Joe") so that Amazon Lex can substitute the placeholder to provide a
	//    personalized prompt to the user ("Hey Joe, what toppings would you like?").
	//
	//
	// Amazon Lex does not persist session attributes.
	//
	//  If you configured a code hook for the intent, Amazon Lex passes the incoming
	// session attributes to the Lambda function. The Lambda function must return
	// these session attributes if you want Amazon Lex to return them to the client.
	//
	//  If there is no code hook configured for the intent Amazon Lex simply returns
	// the session attributes to the client application.
	SessionAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-session-attributes" type:"jsonvalue"`

	// ID of the client application user. Typically, each of your application users
	// should have a unique ID. The application developer decides the user IDs.
	// At runtime, each request must include the user ID. Note the following considerations:
	//
	//    *  If you want a user to start conversation on one device and continue
	//    the conversation on another device, you might choose a user-specific identifier,
	//    such as the user's login, or Amazon Cognito user ID (assuming your application
	//    is using Amazon Cognito).
	//
	//    *  If you want the same user to be able to have two independent conversations
	//    on two different devices, you might choose device-specific identifier,
	//    such as device ID, or some globally unique identifier.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s PostContentInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostContentInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *PostContentInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "PostContentInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.ContentType == nil {
		invalidParams.Add(request.NewErrParamRequired("ContentType"))
	}
	if s.InputStream == nil {
		invalidParams.Add(request.NewErrParamRequired("InputStream"))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetAccept sets the Accept field's value.
func (s *PostContentInput) SetAccept(v string) *PostContentInput {
	s.Accept = &v
	return s
}

// SetBotAlias sets the BotAlias field's value.
func (s *PostContentInput) SetBotAlias(v string) *PostContentInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *PostContentInput) SetBotName(v string) *PostContentInput {
	s.BotName = &v
	return s
}

// SetContentType sets the ContentType field's value.
func (s *PostContentInput) SetContentType(v string) *PostContentInput {
	s.ContentType = &v
	return s
}

// SetInputStream sets the InputStream field's value.
func (s *PostContentInput) SetInputStream(v io.ReadSeeker) *PostContentInput {
	s.InputStream = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostContentInput) SetSessionAttributes(v aws.JSONValue) *PostContentInput {
	s.SessionAttributes = v
	return s
}

// SetUserId sets the UserId field's value.
func (s *PostContentInput) SetUserId(v string) *PostContentInput {
	s.UserId = &v
	return s
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContentResponse
type PostContentOutput struct {
	_ struct{} `type:"structure" payload:"AudioStream"`

	// The prompt (or statement) to convey to the user. This is based on the bot
	// configuration and context. For example, if Amazon Lex did not understand
	// the user intent, it sends the clarificationPrompt configured for the bot.
	// If the intent requires confirmation before taking the fulfillment action,
	// it sends the confirmationPrompt. Another example: Suppose that the Lambda
	// function successfully fulfilled the intent, and sent a message to convey
	// to the user. Then Amazon Lex sends that message in the response.
	AudioStream io.ReadCloser `locationName:"audioStream" type:"blob"`

	// Content type as specified in the Accept HTTP header in the request.
	ContentType *string `location:"header" locationName:"Content-Type" type:"string"`

	// Identifies the current state of the user interaction. Amazon Lex returns
	// one of the following values as dialogState. The client can optionally use
	// this information to customize the user interface.
	//
	//    * ElicitIntent – Amazon Lex wants to elicit the user's intent. Consider
	//    the following examples:
	//
	//  For example, a user might utter an intent ("I want to order a pizza"). If
	//    Amazon Lex cannot infer the user intent from this utterance, it will return
	//    this dialog state.
	//
	//    * ConfirmIntent – Amazon Lex is expecting a "yes" or "no" response.
	//
	// For example, Amazon Lex wants user confirmation before fulfilling an intent.
	//    Instead of a simple "yes" or "no" response, a user might respond with
	//    additional information. For example, "yes, but make it a thick crust pizza"
	//    or "no, I want to order a drink." Amazon Lex can process such additional
	//    information (in these examples, update the crust type slot or change the
	//    intent from OrderPizza to OrderDrink).
	//
	//    * ElicitSlot – Amazon Lex is expecting the value of a slot for the current
	//    intent.
	//
	//  For example, suppose that in the response Amazon Lex sends this message:
	//    "What size pizza would you like?". A user might reply with the slot value
	//    (e.g., "medium"). The user might also provide additional information in
	//    the response (e.g., "medium thick crust pizza"). Amazon Lex can process
	//    such additional information appropriately.
	//
	//    * Fulfilled – Conveys that the Lambda function has successfully fulfilled
	//    the intent.
	//
	//    * ReadyForFulfillment – Conveys that the client has to fullfill the request.
	//
	//
	//    * Failed – Conveys that the conversation with the user failed.
	//
	//  This can happen for various reasons, including that the user does not provide
	//    an appropriate response to prompts from the service (you can configure
	//    how many times Amazon Lex can prompt a user for specific information),
	//    or if the Lambda function fails to fulfill the intent.
	DialogState *string `location:"header" locationName:"x-amz-lex-dialog-state" type:"string" enum:"DialogState"`

	// Transcript of the voice input to the operation.
	InputTranscript *string `location:"header" locationName:"x-amz-lex-input-transcript" type:"string"`

	// Current user intent that Amazon Lex is aware of.
	IntentName *string `location:"header" locationName:"x-amz-lex-intent-name" type:"string"`

	// Message to convey to the user. It can come from the bot's configuration or
	// a code hook (Lambda function). If the current intent is not configured with
	// a code hook or if the code hook returned Delegate as the dialogAction.type
	// in its response, then Amazon Lex decides the next course of action and selects
	// an appropriate message from the bot configuration based on the current user
	// interaction context. For example, if Amazon Lex is not able to understand
	// the user input, it uses a clarification prompt message (For more information,
	// see the Error Handling section in the Amazon Lex console). Another example:
	// if the intent requires confirmation before fulfillment, then Amazon Lex uses
	// the confirmation prompt message in the intent configuration. If the code
	// hook returns a message, Amazon Lex passes it as-is in its response to the
	// client.
	Message *string `location:"header" locationName:"x-amz-lex-message" min:"1" type:"string"`

	// Map of key/value pairs representing the session-specific context information.
	SessionAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-session-attributes" type:"jsonvalue"`

	// If the dialogState value is ElicitSlot, returns the name of the slot for
	// which Amazon Lex is eliciting a value.
	SlotToElicit *string `location:"header" locationName:"x-amz-lex-slot-to-elicit" type:"string"`

	// Map of zero or more intent slots (name/value pairs) Amazon Lex detected from
	// the user input during the conversation.
	Slots aws.JSONValue `location:"header" locationName:"x-amz-lex-slots" type:"jsonvalue"`
}

// String returns the string representation
func (s PostContentOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostContentOutput) GoString() string {
	return s.String()
}

// SetAudioStream sets the AudioStream field's value.
func (s *PostContentOutput) SetAudioStream(v io.ReadCloser) *PostContentOutput {
	s.AudioStream = v
	return s
}

// SetContentType sets the ContentType field's value.
func (s *PostContentOutput) SetContentType(v string) *PostContentOutput {
	s.ContentType = &v
	return s
}

// SetDialogState sets the DialogState field's value.
func (s *PostContentOutput) SetDialogState(v string) *PostContentOutput {
	s.DialogState = &v
	return s
}

// SetInputTranscript sets the InputTranscript field's value.
func (s *PostContentOutput) SetInputTranscript(v string) *PostContentOutput {
	s.InputTranscript = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *PostContentOutput) SetIntentName(v string) *PostContentOutput {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *PostContentOutput) SetMessage(v string) *PostContentOutput {
	s.Message = &v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostContentOutput) SetSessionAttributes(v aws.JSONValue) *PostContentOutput {
	s.SessionAttributes = v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *PostContentOutput) SetSlotToElicit(v string) *PostContentOutput {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PostContentOutput) SetSlots(v aws.JSONValue) *PostContentOutput {
	s.Slots = v
	return s
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostTextRequest
type PostTextInput struct {
	_ struct{} `type:"structure"`

	// The alias of the Amazon Lex bot.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// The name of the Amazon Lex bot.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// The text that the user entered (Amazon Lex interprets this text).
	//
	// InputText is a required field
	InputText *string `locationName:"inputText" min:"1" type:"string" required:"true"`

	// By using session attributes, a client application can pass contextual information
	// in the request to Amazon Lex For example,
	//
	//    * In Getting Started Exercise 1, the example bot uses the price session
	//    attribute to maintain the price of the flowers ordered (for example, "Price":25).
	//    The code hook (the Lambda function) sets this attribute based on the type
	//    of flowers ordered. For more information, see Review the Details of Information
	//    Flow (http://docs.aws.amazon.com/lex/latest/dg/gs-bp-details-after-lambda.html).
	//
	//
	//    * In the BookTrip bot exercise, the bot uses the currentReservation session
	//    attribute to maintain slot data during the in-progress conversation to
	//    book a hotel or book a car. For more information, see Details of Information
	//    Flow (http://docs.aws.amazon.com/lex/latest/dg/book-trip-detail-flow.html).
	//
	//
	//    * You might use the session attributes (key, value pairs) to track the
	//    requestID of user requests.
	//
	// Amazon Lex simply passes these session attributes to the Lambda functions
	// configured for the intent.
	//
	// In your Lambda function, you can also use the session attributes for initialization
	// and customization (prompts and response cards). Some examples are:
	//
	//    *  Initialization - In a pizza ordering bot, if you can pass the user
	//    location as a session attribute (for example, "Location" : "111 Maple
	//    street"), then your Lambda function might use this information to determine
	//    the closest pizzeria to place the order (perhaps to set the storeAddress
	//    slot value).
	//
	//    *  Personalize prompts - For example, you can configure prompts to refer
	//    to the user name. (For example, "Hey [FirstName], what toppings would
	//    you like?"). You can pass the user name as a session attribute ("FirstName"
	//    : "Joe") so that Amazon Lex can substitute the placeholder to provide
	//    a personalize prompt to the user ("Hey Joe, what toppings would you like?").
	//
	//
	// Amazon Lex does not persist session attributes.
	//
	//  If you configure a code hook for the intent, Amazon Lex passes the incoming
	// session attributes to the Lambda function. If you want Amazon Lex to return
	// these session attributes back to the client, the Lambda function must return
	// them.
	//
	//  If there is no code hook configured for the intent, Amazon Lex simply returns
	// the session attributes back to the client application.
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map"`

	// The ID of the client application user. The application developer decides
	// the user IDs. At runtime, each request must include the user ID. Typically,
	// each of your application users should have a unique ID. Note the following
	// considerations:
	//
	//    *  If you want a user to start a conversation on one device and continue
	//    the conversation on another device, you might choose a user-specific identifier,
	//    such as a login or Amazon Cognito user ID (assuming your application is
	//    using Amazon Cognito).
	//
	//    *  If you want the same user to be able to have two independent conversations
	//    on two different devices, you might choose a device-specific identifier,
	//    such as device ID, or some globally unique identifier.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s PostTextInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostTextInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *PostTextInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "PostTextInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.InputText == nil {
		invalidParams.Add(request.NewErrParamRequired("InputText"))
	}
	if s.InputText != nil && len(*s.InputText) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("InputText", 1))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetBotAlias sets the BotAlias field's value.
func (s *PostTextInput) SetBotAlias(v string) *PostTextInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *PostTextInput) SetBotName(v string) *PostTextInput {
	s.BotName = &v
	return s
}

// SetInputText sets the InputText field's value.
func (s *PostTextInput) SetInputText(v string) *PostTextInput {
	s.InputText = &v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostTextInput) SetSessionAttributes(v map[string]*string) *PostTextInput {
	s.SessionAttributes = v
	return s
}

// SetUserId sets the UserId field's value.
func (s *PostTextInput) SetUserId(v string) *PostTextInput {
	s.UserId = &v
	return s
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostTextResponse
type PostTextOutput struct {
	_ struct{} `type:"structure"`

	// Identifies the current state of the user interaction. Amazon Lex returns
	// one of the following values as dialogState. The client can optionally use
	// this information to customize the user interface.
	//
	//    * ElicitIntent – Amazon Lex wants to elicit user intent.
	//
	// For example, a user might utter an intent ("I want to order a pizza"). If
	//    Amazon Lex cannot infer the user intent from this utterance, it will return
	//    this dialogState.
	//
	//    * ConfirmIntent – Amazon Lex is expecting a "yes" or "no" response.
	//
	//  For example, Amazon Lex wants user confirmation before fulfilling an intent.
	//
	//
	// Instead of a simple "yes" or "no," a user might respond with additional information.
	//    For example, "yes, but make it thick crust pizza" or "no, I want to order
	//    a drink". Amazon Lex can process such additional information (in these
	//    examples, update the crust type slot value, or change intent from OrderPizza
	//    to OrderDrink).
	//
	//    * ElicitSlot – Amazon Lex is expecting a slot value for the current intent.
	//
	//
	// For example, suppose that in the response Amazon Lex sends this message:
	//    "What size pizza would you like?". A user might reply with the slot value
	//    (e.g., "medium"). The user might also provide additional information in
	//    the response (e.g., "medium thick crust pizza"). Amazon Lex can process
	//    such additional information appropriately.
	//
	//    * Fulfilled – Conveys that the Lambda function configured for the intent
	//    has successfully fulfilled the intent.
	//
	//    * ReadyForFulfillment – Conveys that the client has to fulfill the intent.
	//
	//
	//    * Failed – Conveys that the conversation with the user failed.
	//
	//  This can happen for various reasons including that the user did not provide
	//    an appropriate response to prompts from the service (you can configure
	//    how many times Amazon Lex can prompt a user for specific information),
	//    or the Lambda function failed to fulfill the intent.
	DialogState *string `locationName:"dialogState" type:"string" enum:"DialogState"`

	// The current user intent that Amazon Lex is aware of.
	IntentName *string `locationName:"intentName" type:"string"`

	// A message to convey to the user. It can come from the bot's configuration
	// or a code hook (Lambda function). If the current intent is not configured
	// with a code hook or the code hook returned Delegate as the dialogAction.type
	// in its response, then Amazon Lex decides the next course of action and selects
	// an appropriate message from the bot configuration based on the current user
	// interaction context. For example, if Amazon Lex is not able to understand
	// the user input, it uses a clarification prompt message (for more information,
	// see the Error Handling section in the Amazon Lex console). Another example:
	// if the intent requires confirmation before fulfillment, then Amazon Lex uses
	// the confirmation prompt message in the intent configuration. If the code
	// hook returns a message, Amazon Lex passes it as-is in its response to the
	// client.
	Message *string `locationName:"message" min:"1" type:"string"`

	// Represents the options that the user has to respond to the current prompt.
	// Response Card can come from the bot configuration (in the Amazon Lex console,
	// choose the settings button next to a slot) or from a code hook (Lambda function).
	ResponseCard *ResponseCard `locationName:"responseCard" type:"structure"`

	// A map of key-value pairs representing the session-specific context information.
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map"`

	// If the dialogState value is ElicitSlot, returns the name of the slot for
	// which Amazon Lex is eliciting a value.
	SlotToElicit *string `locationName:"slotToElicit" type:"string"`

	// The intent slots (name/value pairs) that Amazon Lex detected so far from
	// the user input in the conversation.
	Slots map[string]*string `locationName:"slots" type:"map"`
}

// String returns the string representation
func (s PostTextOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostTextOutput) GoString() string {
	return s.String()
}

// SetDialogState sets the DialogState field's value.
func (s *PostTextOutput) SetDialogState(v string) *PostTextOutput {
	s.DialogState = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *PostTextOutput) SetIntentName(v string) *PostTextOutput {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *PostTextOutput) SetMessage(v string) *PostTextOutput {
	s.Message = &v
	return s
}

// SetResponseCard sets the ResponseCard field's value.
func (s *PostTextOutput) SetResponseCard(v *ResponseCard) *PostTextOutput {
	s.ResponseCard = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostTextOutput) SetSessionAttributes(v map[string]*string) *PostTextOutput {
	s.SessionAttributes = v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *PostTextOutput) SetSlotToElicit(v string) *PostTextOutput {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PostTextOutput) SetSlots(v map[string]*string) *PostTextOutput {
	s.Slots = v
	return s
}

// If you configure a response card when creating your bots, Amazon Lex substitutes
// the session attributes and slot values that are available, and then returns
// it. The response card can also come from a Lambda function ( dialogCodeHook
// and fulfillmentActivity on an intent).
// Please also see https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/ResponseCard
type ResponseCard struct {
	_ struct{} `type:"structure"`

	// The content type of the response.
	ContentType *string `locationName:"contentType" type:"string" enum:"ContentType"`

	// An array of attachment objects representing options.
	GenericAttachments []*GenericAttachment `locationName:"genericAttachments" type:"list"`

	// The version of the response card format.
	Version *string `locationName:"version" type:"string"`
}

// String returns the string representation
func (s ResponseCard) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ResponseCard) GoString() string {
	return s.String()
}

// SetContentType sets the ContentType field's value.
func (s *ResponseCard) SetContentType(v string) *ResponseCard {
	s.ContentType = &v
	return s
}

// SetGenericAttachments sets the GenericAttachments field's value.
func (s *ResponseCard) SetGenericAttachments(v []*GenericAttachment) *ResponseCard {
	s.GenericAttachments = v
	return s
}

// SetVersion sets the Version field's value.
func (s *ResponseCard) SetVersion(v string) *ResponseCard {
	s.Version = &v
	return s
}

const (
	// ContentTypeApplicationVndAmazonawsCardGeneric is a ContentType enum value
	ContentTypeApplicationVndAmazonawsCardGeneric = "application/vnd.amazonaws.card.generic"
)

const (
	// DialogStateElicitIntent is a DialogState enum value
	DialogStateElicitIntent = "ElicitIntent"

	// DialogStateConfirmIntent is a DialogState enum value
	DialogStateConfirmIntent = "ConfirmIntent"

	// DialogStateElicitSlot is a DialogState enum value
	DialogStateElicitSlot = "ElicitSlot"

	// DialogStateFulfilled is a DialogState enum value
	DialogStateFulfilled = "Fulfilled"

	// DialogStateReadyForFulfillment is a DialogState enum value
	DialogStateReadyForFulfillment = "ReadyForFulfillment"

	// DialogStateFailed is a DialogState enum value
	DialogStateFailed = "Failed"
)