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

package wellarchitected

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

// Get an existing lens.
func (c *Client) GetLens(ctx context.Context, params *GetLensInput, optFns ...func(*Options)) (*GetLensOutput, error) {
	if params == nil {
		params = &GetLensInput{}
	}

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

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

type GetLensInput struct {

	// The alias of the lens. For Amazon Web Services official lenses, this is either
	// the lens alias, such as serverless , or the lens ARN, such as
	// arn:aws:wellarchitected:us-east-1::lens/serverless . Note that some operations
	// (such as ExportLens and CreateLensShare) are not permitted on Amazon Web
	// Services official lenses. For custom lenses, this is the lens ARN, such as
	// arn:aws:wellarchitected:us-west-2:123456789012:lens/0123456789abcdef01234567890abcdef
	// . Each lens is identified by its LensSummary$LensAlias .
	//
	// This member is required.
	LensAlias *string

	// The lens version to be retrieved.
	LensVersion *string

	noSmithyDocumentSerde
}

type GetLensOutput struct {

	// A lens return object.
	Lens *types.Lens

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetLensMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestjson1_serializeOpGetLens{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpGetLens{}, 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 = addOpGetLensValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetLens(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_opGetLens(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "wellarchitected",
		OperationName: "GetLens",
	}
}