// 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"
)

// Creates a topic to which notifications can be published. Users can create at
// most 100,000 standard topics (at most 1,000 FIFO topics). For more information,
// see Creating an Amazon SNS topic (https://docs.aws.amazon.com/sns/latest/dg/sns-create-topic.html)
// in the Amazon SNS Developer Guide. This action is idempotent, so if the
// requester already owns a topic with the specified name, that topic's ARN is
// returned without creating a new topic.
func (c *Client) CreateTopic(ctx context.Context, params *CreateTopicInput, optFns ...func(*Options)) (*CreateTopicOutput, error) {
	if params == nil {
		params = &CreateTopicInput{}
	}

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

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

// Input for CreateTopic action.
type CreateTopicInput struct {

	// The name of the topic you want to create. Constraints: Topic names must be made
	// up of only uppercase and lowercase ASCII letters, numbers, underscores, and
	// hyphens, and must be between 1 and 256 characters long. For a FIFO
	// (first-in-first-out) topic, the name must end with the .fifo suffix.
	//
	// This member is required.
	Name *string

	// A map of attributes with their corresponding values. The following lists the
	// names, descriptions, and values of the special request parameters that the
	// CreateTopic action uses:
	//   - DeliveryPolicy – The policy that defines how Amazon SNS retries failed
	//   deliveries to HTTP/S endpoints.
	//   - DisplayName – The display name to use for a topic with SMS subscriptions.
	//   - FifoTopic – Set to true to create a FIFO topic.
	//   - Policy – The policy that defines who can access your topic. By default, only
	//   the topic owner can publish or subscribe to the topic.
	//   - SignatureVersion – The signature version corresponds to the hashing
	//   algorithm used while creating the signature of the notifications, subscription
	//   confirmations, or unsubscribe confirmation messages sent by Amazon SNS. By
	//   default, SignatureVersion is set to 1 .
	//   - TracingConfig – Tracing mode of an Amazon SNS topic. By default
	//   TracingConfig is set to PassThrough , and the topic passes through the tracing
	//   header it receives from an Amazon SNS publisher to its subscriptions. If set to
	//   Active , Amazon SNS will vend X-Ray segment data to topic owner account if the
	//   sampled flag in the tracing header is true. This is only supported on standard
	//   topics.
	// The following attribute applies only to server-side encryption (https://docs.aws.amazon.com/sns/latest/dg/sns-server-side-encryption.html)
	// :
	//   - KmsMasterKeyId – The ID of an Amazon Web Services managed customer master
	//   key (CMK) for Amazon SNS or a custom CMK. For more information, see Key Terms (https://docs.aws.amazon.com/sns/latest/dg/sns-server-side-encryption.html#sse-key-terms)
	//   . For more examples, see KeyId (https://docs.aws.amazon.com/kms/latest/APIReference/API_DescribeKey.html#API_DescribeKey_RequestParameters)
	//   in the Key Management Service API Reference.
	// The following attributes apply only to FIFO topics (https://docs.aws.amazon.com/sns/latest/dg/sns-fifo-topics.html)
	// :
	//   - FifoTopic – When this is set to true , a FIFO topic is created.
	//   - ContentBasedDeduplication – Enables content-based deduplication for FIFO
	//   topics.
	//   - By default, ContentBasedDeduplication is set to false . If you create a FIFO
	//   topic and this attribute is false , you must specify a value for the
	//   MessageDeduplicationId parameter for the Publish (https://docs.aws.amazon.com/sns/latest/api/API_Publish.html)
	//   action.
	//   - When you set ContentBasedDeduplication to true , Amazon SNS uses a SHA-256
	//   hash to generate the MessageDeduplicationId using the body of the message (but
	//   not the attributes of the message). (Optional) To override the generated value,
	//   you can specify a value for the MessageDeduplicationId parameter for the
	//   Publish action.
	Attributes map[string]string

	// The body of the policy document you want to use for this topic. You can only
	// add one policy per topic. The policy must be in JSON string format. Length
	// Constraints: Maximum length of 30,720.
	DataProtectionPolicy *string

	// The list of tags to add to a new topic. To be able to tag a topic on creation,
	// you must have the sns:CreateTopic and sns:TagResource permissions.
	Tags []types.Tag

	noSmithyDocumentSerde
}

// Response from CreateTopic action.
type CreateTopicOutput struct {

	// The Amazon Resource Name (ARN) assigned to the created topic.
	TopicArn *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationCreateTopicMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsquery_serializeOpCreateTopic{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpCreateTopic{}, 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 = addOpCreateTopicValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opCreateTopic(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_opCreateTopic(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "sns",
		OperationName: "CreateTopic",
	}
}