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

package cloudfrontkeyvaluestore

import (
	"context"
	"errors"
	"fmt"
	"github.com/aws/aws-sdk-go-v2/aws"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	internalConfig "github.com/aws/aws-sdk-go-v2/internal/configsources"
	"github.com/aws/aws-sdk-go-v2/internal/endpoints"
	"github.com/aws/aws-sdk-go-v2/internal/endpoints/awsrulesfn"
	internalendpoints "github.com/aws/aws-sdk-go-v2/service/cloudfrontkeyvaluestore/internal/endpoints"
	smithy "github.com/aws/smithy-go"
	smithyauth "github.com/aws/smithy-go/auth"
	smithyendpoints "github.com/aws/smithy-go/endpoints"
	"github.com/aws/smithy-go/endpoints/private/rulesfn"
	"github.com/aws/smithy-go/middleware"
	"github.com/aws/smithy-go/ptr"
	smithyhttp "github.com/aws/smithy-go/transport/http"
	"net/http"
	"net/url"
	"os"
	"strings"
)

// EndpointResolverOptions is the service endpoint resolver options
type EndpointResolverOptions = internalendpoints.Options

// EndpointResolver interface for resolving service endpoints.
type EndpointResolver interface {
	ResolveEndpoint(region string, options EndpointResolverOptions) (aws.Endpoint, error)
}

var _ EndpointResolver = &internalendpoints.Resolver{}

// NewDefaultEndpointResolver constructs a new service endpoint resolver
func NewDefaultEndpointResolver() *internalendpoints.Resolver {
	return internalendpoints.New()
}

// EndpointResolverFunc is a helper utility that wraps a function so it satisfies
// the EndpointResolver interface. This is useful when you want to add additional
// endpoint resolving logic, or stub out specific endpoints with custom values.
type EndpointResolverFunc func(region string, options EndpointResolverOptions) (aws.Endpoint, error)

func (fn EndpointResolverFunc) ResolveEndpoint(region string, options EndpointResolverOptions) (endpoint aws.Endpoint, err error) {
	return fn(region, options)
}

// EndpointResolverFromURL returns an EndpointResolver configured using the
// provided endpoint url. By default, the resolved endpoint resolver uses the
// client region as signing region, and the endpoint source is set to
// EndpointSourceCustom.You can provide functional options to configure endpoint
// values for the resolved endpoint.
func EndpointResolverFromURL(url string, optFns ...func(*aws.Endpoint)) EndpointResolver {
	e := aws.Endpoint{URL: url, Source: aws.EndpointSourceCustom}
	for _, fn := range optFns {
		fn(&e)
	}

	return EndpointResolverFunc(
		func(region string, options EndpointResolverOptions) (aws.Endpoint, error) {
			if len(e.SigningRegion) == 0 {
				e.SigningRegion = region
			}
			return e, nil
		},
	)
}

type ResolveEndpoint struct {
	Resolver EndpointResolver
	Options  EndpointResolverOptions
}

func (*ResolveEndpoint) ID() string {
	return "ResolveEndpoint"
}

func (m *ResolveEndpoint) HandleSerialize(ctx context.Context, in middleware.SerializeInput, next middleware.SerializeHandler) (
	out middleware.SerializeOutput, metadata middleware.Metadata, err error,
) {
	if !awsmiddleware.GetRequiresLegacyEndpoints(ctx) {
		return next.HandleSerialize(ctx, in)
	}

	req, ok := in.Request.(*smithyhttp.Request)
	if !ok {
		return out, metadata, fmt.Errorf("unknown transport type %T", in.Request)
	}

	if m.Resolver == nil {
		return out, metadata, fmt.Errorf("expected endpoint resolver to not be nil")
	}

	eo := m.Options
	eo.Logger = middleware.GetLogger(ctx)

	var endpoint aws.Endpoint
	endpoint, err = m.Resolver.ResolveEndpoint(awsmiddleware.GetRegion(ctx), eo)
	if err != nil {
		nf := (&aws.EndpointNotFoundError{})
		if errors.As(err, &nf) {
			ctx = awsmiddleware.SetRequiresLegacyEndpoints(ctx, false)
			return next.HandleSerialize(ctx, in)
		}
		return out, metadata, fmt.Errorf("failed to resolve service endpoint, %w", err)
	}

	req.URL, err = url.Parse(endpoint.URL)
	if err != nil {
		return out, metadata, fmt.Errorf("failed to parse endpoint URL: %w", err)
	}

	if len(awsmiddleware.GetSigningName(ctx)) == 0 {
		signingName := endpoint.SigningName
		if len(signingName) == 0 {
			signingName = "key-value-store"
		}
		ctx = awsmiddleware.SetSigningName(ctx, signingName)
	}
	ctx = awsmiddleware.SetEndpointSource(ctx, endpoint.Source)
	ctx = smithyhttp.SetHostnameImmutable(ctx, endpoint.HostnameImmutable)
	ctx = awsmiddleware.SetSigningRegion(ctx, endpoint.SigningRegion)
	ctx = awsmiddleware.SetPartitionID(ctx, endpoint.PartitionID)
	return next.HandleSerialize(ctx, in)
}
func addResolveEndpointMiddleware(stack *middleware.Stack, o Options) error {
	return stack.Serialize.Insert(&ResolveEndpoint{
		Resolver: o.EndpointResolver,
		Options:  o.EndpointOptions,
	}, "OperationSerializer", middleware.Before)
}

func removeResolveEndpointMiddleware(stack *middleware.Stack) error {
	_, err := stack.Serialize.Remove((&ResolveEndpoint{}).ID())
	return err
}

type wrappedEndpointResolver struct {
	awsResolver aws.EndpointResolverWithOptions
}

func (w *wrappedEndpointResolver) ResolveEndpoint(region string, options EndpointResolverOptions) (endpoint aws.Endpoint, err error) {
	return w.awsResolver.ResolveEndpoint(ServiceID, region, options)
}

type awsEndpointResolverAdaptor func(service, region string) (aws.Endpoint, error)

func (a awsEndpointResolverAdaptor) ResolveEndpoint(service, region string, options ...interface{}) (aws.Endpoint, error) {
	return a(service, region)
}

var _ aws.EndpointResolverWithOptions = awsEndpointResolverAdaptor(nil)

// withEndpointResolver returns an aws.EndpointResolverWithOptions that first delegates endpoint resolution to the awsResolver.
// If awsResolver returns aws.EndpointNotFoundError error, the v1 resolver middleware will swallow the error,
// and set an appropriate context flag such that fallback will occur when EndpointResolverV2 is invoked
// via its middleware.
//
// If another error (besides aws.EndpointNotFoundError) is returned, then that error will be propagated.
func withEndpointResolver(awsResolver aws.EndpointResolver, awsResolverWithOptions aws.EndpointResolverWithOptions) EndpointResolver {
	var resolver aws.EndpointResolverWithOptions

	if awsResolverWithOptions != nil {
		resolver = awsResolverWithOptions
	} else if awsResolver != nil {
		resolver = awsEndpointResolverAdaptor(awsResolver.ResolveEndpoint)
	}

	return &wrappedEndpointResolver{
		awsResolver: resolver,
	}
}

func finalizeClientEndpointResolverOptions(options *Options) {
	options.EndpointOptions.LogDeprecated = options.ClientLogMode.IsDeprecatedUsage()

	if len(options.EndpointOptions.ResolvedRegion) == 0 {
		const fipsInfix = "-fips-"
		const fipsPrefix = "fips-"
		const fipsSuffix = "-fips"

		if strings.Contains(options.Region, fipsInfix) ||
			strings.Contains(options.Region, fipsPrefix) ||
			strings.Contains(options.Region, fipsSuffix) {
			options.EndpointOptions.ResolvedRegion = strings.ReplaceAll(strings.ReplaceAll(strings.ReplaceAll(
				options.Region, fipsInfix, "-"), fipsPrefix, ""), fipsSuffix, "")
			options.EndpointOptions.UseFIPSEndpoint = aws.FIPSEndpointStateEnabled
		}
	}

}

func resolveEndpointResolverV2(options *Options) {
	if options.EndpointResolverV2 == nil {
		options.EndpointResolverV2 = NewDefaultEndpointResolverV2()
	}
}

func resolveBaseEndpoint(cfg aws.Config, o *Options) {
	if cfg.BaseEndpoint != nil {
		o.BaseEndpoint = cfg.BaseEndpoint
	}

	_, g := os.LookupEnv("AWS_ENDPOINT_URL")
	_, s := os.LookupEnv("AWS_ENDPOINT_URL_CLOUDFRONT_KEYVALUESTORE")

	if g && !s {
		return
	}

	value, found, err := internalConfig.ResolveServiceBaseEndpoint(context.Background(), "CloudFront KeyValueStore", cfg.ConfigSources)
	if found && err == nil {
		o.BaseEndpoint = &value
	}
}

// EndpointParameters provides the parameters that influence how endpoints are
// resolved.
type EndpointParameters struct {
	// The ARN of the Key Value Store
	//
	// Parameter is required.
	KvsARN *string

	// The AWS region used to dispatch the request.
	//
	// Parameter is
	// required.
	//
	// AWS::Region
	Region *string

	// When true, send this request to the FIPS-compliant regional endpoint. If the
	// configured endpoint does not have a FIPS compliant endpoint, dispatching the
	// request will return an error.
	//
	// Defaults to false if no value is
	// provided.
	//
	// AWS::UseFIPS
	UseFIPS *bool

	// Override the endpoint used to send this request
	//
	// Parameter is
	// required.
	//
	// SDK::Endpoint
	Endpoint *string
}

// ValidateRequired validates required parameters are set.
func (p EndpointParameters) ValidateRequired() error {
	if p.UseFIPS == nil {
		return fmt.Errorf("parameter UseFIPS is required")
	}

	return nil
}

// WithDefaults returns a shallow copy of EndpointParameterswith default values
// applied to members where applicable.
func (p EndpointParameters) WithDefaults() EndpointParameters {
	if p.UseFIPS == nil {
		p.UseFIPS = ptr.Bool(false)
	}
	return p
}

// EndpointResolverV2 provides the interface for resolving service endpoints.
type EndpointResolverV2 interface {
	// ResolveEndpoint attempts to resolve the endpoint with the provided options,
	// returning the endpoint if found. Otherwise an error is returned.
	ResolveEndpoint(ctx context.Context, params EndpointParameters) (
		smithyendpoints.Endpoint, error,
	)
}

// resolver provides the implementation for resolving endpoints.
type resolver struct{}

func NewDefaultEndpointResolverV2() EndpointResolverV2 {
	return &resolver{}
}

// ResolveEndpoint attempts to resolve the endpoint with the provided options,
// returning the endpoint if found. Otherwise an error is returned.
func (r *resolver) ResolveEndpoint(
	ctx context.Context, params EndpointParameters,
) (
	endpoint smithyendpoints.Endpoint, err error,
) {
	params = params.WithDefaults()
	if err = params.ValidateRequired(); err != nil {
		return endpoint, fmt.Errorf("endpoint parameters are not valid, %w", err)
	}
	_UseFIPS := *params.UseFIPS

	if _UseFIPS == false {
		if exprVal := params.KvsARN; exprVal != nil {
			_KvsARN := *exprVal
			_ = _KvsARN
			if exprVal := awsrulesfn.ParseARN(_KvsARN); exprVal != nil {
				_parsedArn := *exprVal
				_ = _parsedArn
				if _parsedArn.Service == "cloudfront" {
					if _parsedArn.Region == "" {
						if exprVal := _parsedArn.ResourceId.Get(0); exprVal != nil {
							_arnType := *exprVal
							_ = _arnType
							if !(_arnType == "") {
								if _arnType == "key-value-store" {
									if _parsedArn.Partition == "aws" {
										if exprVal := params.Region; exprVal != nil {
											_Region := *exprVal
											_ = _Region
											if exprVal := awsrulesfn.GetPartition(_Region); exprVal != nil {
												_partitionResult := *exprVal
												_ = _partitionResult
												if _partitionResult.Name == _parsedArn.Partition {
													if exprVal := params.Endpoint; exprVal != nil {
														_Endpoint := *exprVal
														_ = _Endpoint
														if exprVal := rulesfn.ParseURL(_Endpoint); exprVal != nil {
															_url := *exprVal
															_ = _url
															uriString := func() string {
																var out strings.Builder
																out.WriteString(_url.Scheme)
																out.WriteString("://")
																out.WriteString(_parsedArn.AccountId)
																out.WriteString(".")
																out.WriteString(_url.Authority)
																out.WriteString(_url.Path)
																return out.String()
															}()

															uri, err := url.Parse(uriString)
															if err != nil {
																return endpoint, fmt.Errorf("Failed to parse uri: %s", uriString)
															}

															return smithyendpoints.Endpoint{
																URI:     *uri,
																Headers: http.Header{},
																Properties: func() smithy.Properties {
																	var out smithy.Properties
																	smithyauth.SetAuthOptions(&out, []*smithyauth.Option{
																		{
																			SchemeID: "aws.auth#sigv4a",
																			SignerProperties: func() smithy.Properties {
																				var sp smithy.Properties
																				smithyhttp.SetSigV4SigningName(&sp, "cloudfront-keyvaluestore")
																				smithyhttp.SetSigV4ASigningName(&sp, "cloudfront-keyvaluestore")

																				smithyhttp.SetSigV4ASigningRegions(&sp, []string{"*"})
																				return sp
																			}(),
																		},
																	})
																	return out
																}(),
															}, nil
														}
														return endpoint, fmt.Errorf("endpoint rule error, %s", "Provided endpoint is not a valid URL")
													}
													uriString := func() string {
														var out strings.Builder
														out.WriteString("https://")
														out.WriteString(_parsedArn.AccountId)
														out.WriteString(".cloudfront-kvs.global.api.aws")
														return out.String()
													}()

													uri, err := url.Parse(uriString)
													if err != nil {
														return endpoint, fmt.Errorf("Failed to parse uri: %s", uriString)
													}

													return smithyendpoints.Endpoint{
														URI:     *uri,
														Headers: http.Header{},
														Properties: func() smithy.Properties {
															var out smithy.Properties
															smithyauth.SetAuthOptions(&out, []*smithyauth.Option{
																{
																	SchemeID: "aws.auth#sigv4a",
																	SignerProperties: func() smithy.Properties {
																		var sp smithy.Properties
																		smithyhttp.SetSigV4SigningName(&sp, "cloudfront-keyvaluestore")
																		smithyhttp.SetSigV4ASigningName(&sp, "cloudfront-keyvaluestore")

																		smithyhttp.SetSigV4ASigningRegions(&sp, []string{"*"})
																		return sp
																	}(),
																},
															})
															return out
														}(),
													}, nil
												}
												return endpoint, fmt.Errorf("endpoint rule error, %s", func() string {
													var out strings.Builder
													out.WriteString("Client was configured for partition `")
													out.WriteString(_partitionResult.Name)
													out.WriteString("` but Kvs ARN has `")
													out.WriteString(_parsedArn.Partition)
													out.WriteString("`")
													return out.String()
												}())
											}
											return endpoint, fmt.Errorf("Endpoint resolution failed. Invalid operation or environment input.")
										}
										if exprVal := params.Endpoint; exprVal != nil {
											_Endpoint := *exprVal
											_ = _Endpoint
											if exprVal := rulesfn.ParseURL(_Endpoint); exprVal != nil {
												_url := *exprVal
												_ = _url
												uriString := func() string {
													var out strings.Builder
													out.WriteString(_url.Scheme)
													out.WriteString("://")
													out.WriteString(_parsedArn.AccountId)
													out.WriteString(".")
													out.WriteString(_url.Authority)
													out.WriteString(_url.Path)
													return out.String()
												}()

												uri, err := url.Parse(uriString)
												if err != nil {
													return endpoint, fmt.Errorf("Failed to parse uri: %s", uriString)
												}

												return smithyendpoints.Endpoint{
													URI:     *uri,
													Headers: http.Header{},
													Properties: func() smithy.Properties {
														var out smithy.Properties
														smithyauth.SetAuthOptions(&out, []*smithyauth.Option{
															{
																SchemeID: "aws.auth#sigv4a",
																SignerProperties: func() smithy.Properties {
																	var sp smithy.Properties
																	smithyhttp.SetSigV4SigningName(&sp, "cloudfront-keyvaluestore")
																	smithyhttp.SetSigV4ASigningName(&sp, "cloudfront-keyvaluestore")

																	smithyhttp.SetSigV4ASigningRegions(&sp, []string{"*"})
																	return sp
																}(),
															},
														})
														return out
													}(),
												}, nil
											}
											return endpoint, fmt.Errorf("endpoint rule error, %s", "Provided endpoint is not a valid URL")
										}
										uriString := func() string {
											var out strings.Builder
											out.WriteString("https://")
											out.WriteString(_parsedArn.AccountId)
											out.WriteString(".cloudfront-kvs.global.api.aws")
											return out.String()
										}()

										uri, err := url.Parse(uriString)
										if err != nil {
											return endpoint, fmt.Errorf("Failed to parse uri: %s", uriString)
										}

										return smithyendpoints.Endpoint{
											URI:     *uri,
											Headers: http.Header{},
											Properties: func() smithy.Properties {
												var out smithy.Properties
												smithyauth.SetAuthOptions(&out, []*smithyauth.Option{
													{
														SchemeID: "aws.auth#sigv4a",
														SignerProperties: func() smithy.Properties {
															var sp smithy.Properties
															smithyhttp.SetSigV4SigningName(&sp, "cloudfront-keyvaluestore")
															smithyhttp.SetSigV4ASigningName(&sp, "cloudfront-keyvaluestore")

															smithyhttp.SetSigV4ASigningRegions(&sp, []string{"*"})
															return sp
														}(),
													},
												})
												return out
											}(),
										}, nil
									}
									return endpoint, fmt.Errorf("endpoint rule error, %s", func() string {
										var out strings.Builder
										out.WriteString("CloudFront-KeyValueStore is not supported in partition `")
										out.WriteString(_parsedArn.Partition)
										out.WriteString("`")
										return out.String()
									}())
								}
								return endpoint, fmt.Errorf("endpoint rule error, %s", func() string {
									var out strings.Builder
									out.WriteString("ARN resource type is invalid. Expected `key-value-store`, found: `")
									out.WriteString(_arnType)
									out.WriteString("`")
									return out.String()
								}())
							}
							return endpoint, fmt.Errorf("endpoint rule error, %s", "No resource type found in the KVS ARN. Resource type must be `key-value-store`.")
						}
						return endpoint, fmt.Errorf("endpoint rule error, %s", "No resource type found in the KVS ARN. Resource type must be `key-value-store`.")
					}
					return endpoint, fmt.Errorf("endpoint rule error, %s", func() string {
						var out strings.Builder
						out.WriteString("Provided ARN must be a global resource ARN. Found: `")
						out.WriteString(_parsedArn.Region)
						out.WriteString("`")
						return out.String()
					}())
				}
				return endpoint, fmt.Errorf("endpoint rule error, %s", func() string {
					var out strings.Builder
					out.WriteString("Provided ARN is not a valid CloudFront Service ARN. Found: `")
					out.WriteString(_parsedArn.Service)
					out.WriteString("`")
					return out.String()
				}())
			}
			return endpoint, fmt.Errorf("endpoint rule error, %s", "KVS ARN must be a valid ARN")
		}
		return endpoint, fmt.Errorf("endpoint rule error, %s", "KVS ARN must be provided to use this service")
	}
	return endpoint, fmt.Errorf("endpoint rule error, %s", "Invalid Configuration: FIPS is not supported with CloudFront-KeyValueStore.")
}

type endpointParamsBinder interface {
	bindEndpointParams(*EndpointParameters)
}

func bindEndpointParams(input interface{}, options Options) *EndpointParameters {
	params := &EndpointParameters{}

	params.Region = aws.String(endpoints.MapFIPSRegion(options.Region))
	params.UseFIPS = aws.Bool(options.EndpointOptions.UseFIPSEndpoint == aws.FIPSEndpointStateEnabled)
	params.Endpoint = options.BaseEndpoint

	if b, ok := input.(endpointParamsBinder); ok {
		b.bindEndpointParams(params)
	}

	return params
}

type resolveEndpointV2Middleware struct {
	options Options
}

func (*resolveEndpointV2Middleware) ID() string {
	return "ResolveEndpointV2"
}

func (m *resolveEndpointV2Middleware) HandleFinalize(ctx context.Context, in middleware.FinalizeInput, next middleware.FinalizeHandler) (
	out middleware.FinalizeOutput, metadata middleware.Metadata, err error,
) {
	if awsmiddleware.GetRequiresLegacyEndpoints(ctx) {
		return next.HandleFinalize(ctx, in)
	}

	req, ok := in.Request.(*smithyhttp.Request)
	if !ok {
		return out, metadata, fmt.Errorf("unknown transport type %T", in.Request)
	}

	if m.options.EndpointResolverV2 == nil {
		return out, metadata, fmt.Errorf("expected endpoint resolver to not be nil")
	}

	params := bindEndpointParams(getOperationInput(ctx), m.options)
	endpt, err := m.options.EndpointResolverV2.ResolveEndpoint(ctx, *params)
	if err != nil {
		return out, metadata, fmt.Errorf("failed to resolve service endpoint, %w", err)
	}

	if endpt.URI.RawPath == "" && req.URL.RawPath != "" {
		endpt.URI.RawPath = endpt.URI.Path
	}
	req.URL.Scheme = endpt.URI.Scheme
	req.URL.Host = endpt.URI.Host
	req.URL.Path = smithyhttp.JoinPath(endpt.URI.Path, req.URL.Path)
	req.URL.RawPath = smithyhttp.JoinPath(endpt.URI.RawPath, req.URL.RawPath)
	for k := range endpt.Headers {
		req.Header.Set(k, endpt.Headers.Get(k))
	}

	rscheme := getResolvedAuthScheme(ctx)
	if rscheme == nil {
		return out, metadata, fmt.Errorf("no resolved auth scheme")
	}

	opts, _ := smithyauth.GetAuthOptions(&endpt.Properties)
	for _, o := range opts {
		rscheme.SignerProperties.SetAll(&o.SignerProperties)
	}

	return next.HandleFinalize(ctx, in)
}
