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

package rekognition

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

// Starts the asynchronous search for faces in a collection that match the faces of
// persons detected in a stored video. The video must be stored in an Amazon S3
// bucket. Use Video to specify the bucket name and the filename of the video.
// StartFaceSearch returns a job identifier (JobId) which you use to get the search
// results once the search has completed. When searching is finished, Amazon
// Rekognition Video publishes a completion status to the Amazon Simple
// Notification Service topic that you specify in NotificationChannel. To get the
// search results, first check that the status value published to the Amazon SNS
// topic is SUCCEEDED. If so, call GetFaceSearch and pass the job identifier
// (JobId) from the initial call to StartFaceSearch. For more information, see
// Searching stored videos for faces
// (https://docs.aws.amazon.com/rekognition/latest/dg/procedure-person-search-videos.html).
func (c *Client) StartFaceSearch(ctx context.Context, params *StartFaceSearchInput, optFns ...func(*Options)) (*StartFaceSearchOutput, error) {
	if params == nil {
		params = &StartFaceSearchInput{}
	}

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

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

type StartFaceSearchInput struct {

	// ID of the collection that contains the faces you want to search for.
	//
	// This member is required.
	CollectionId *string

	// The video you want to search. The video must be stored in an Amazon S3 bucket.
	//
	// This member is required.
	Video *types.Video

	// Idempotent token used to identify the start request. If you use the same token
	// with multiple StartFaceSearch requests, the same JobId is returned. Use
	// ClientRequestToken to prevent the same job from being accidently started more
	// than once.
	ClientRequestToken *string

	// The minimum confidence in the person match to return. For example, don't return
	// any matches where confidence in matches is less than 70%. The default value is
	// 80%.
	FaceMatchThreshold *float32

	// An identifier you specify that's returned in the completion notification that's
	// published to your Amazon Simple Notification Service topic. For example, you can
	// use JobTag to group related jobs and identify them in the completion
	// notification.
	JobTag *string

	// The ARN of the Amazon SNS topic to which you want Amazon Rekognition Video to
	// publish the completion status of the search. The Amazon SNS topic must have a
	// topic name that begins with AmazonRekognition if you are using the
	// AmazonRekognitionServiceRole permissions policy to access the topic.
	NotificationChannel *types.NotificationChannel

	noSmithyDocumentSerde
}

type StartFaceSearchOutput struct {

	// The identifier for the search job. Use JobId to identify the job in a subsequent
	// call to GetFaceSearch.
	JobId *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationStartFaceSearchMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpStartFaceSearch{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpStartFaceSearch{}, 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 = addOpStartFaceSearchValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opStartFaceSearch(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_opStartFaceSearch(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "rekognition",
		OperationName: "StartFaceSearch",
	}
}
