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

package sns

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

// Publishes up to ten messages to the specified topic. This is a batch version of
// Publish . For FIFO topics, multiple messages within a single batch are published
// in the order they are sent, and messages are deduplicated within the batch and
// across batches for 5 minutes. The result of publishing each message is reported
// individually in the response. Because the batch request can result in a
// combination of successful and unsuccessful actions, you should check for batch
// errors even when the call returns an HTTP status code of 200 . The maximum
// allowed individual message size and the maximum total payload size (the sum of
// the individual lengths of all of the batched messages) are both 256 KB (262,144
// bytes). Some actions take lists of parameters. These lists are specified using
// the param.n notation. Values of n are integers starting from 1. For example, a
// parameter list with two elements looks like this: &AttributeName.1=first
// &AttributeName.2=second If you send a batch message to a topic, Amazon SNS
// publishes the batch message to each endpoint that is subscribed to the topic.
// The format of the batch message depends on the notification protocol for each
// subscribed endpoint. When a messageId is returned, the batch message is saved
// and Amazon SNS immediately delivers the message to subscribers.
func (c *Client) PublishBatch(ctx context.Context, params *PublishBatchInput, optFns ...func(*Options)) (*PublishBatchOutput, error) {
	if params == nil {
		params = &PublishBatchInput{}
	}

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

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

type PublishBatchInput struct {

	// A list of PublishBatch request entries to be sent to the SNS topic.
	//
	// This member is required.
	PublishBatchRequestEntries []types.PublishBatchRequestEntry

	// The Amazon resource name (ARN) of the topic you want to batch publish to.
	//
	// This member is required.
	TopicArn *string

	noSmithyDocumentSerde
}

type PublishBatchOutput struct {

	// A list of failed PublishBatch responses.
	Failed []types.BatchResultErrorEntry

	// A list of successful PublishBatch responses.
	Successful []types.PublishBatchResultEntry

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationPublishBatchMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsquery_serializeOpPublishBatch{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpPublishBatch{}, 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 = addOpPublishBatchValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opPublishBatch(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
}

func newServiceMetadataMiddleware_opPublishBatch(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "sns",
		OperationName: "PublishBatch",
	}
}