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

package pricing

import (
	"context"
	"errors"
	"fmt"
	"github.com/aws/aws-sdk-go-v2/aws"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	internalauth "github.com/aws/aws-sdk-go-v2/internal/auth"
	"github.com/aws/aws-sdk-go-v2/service/pricing/types"
	smithyendpoints "github.com/aws/smithy-go/endpoints"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
	"time"
)

// This feature is in preview release and is subject to change. Your use of Amazon
// Web Services Price List API is subject to the Beta Service Participation terms
// of the Amazon Web Services Service Terms (https://aws.amazon.com/service-terms/)
// (Section 1.10). This returns a list of Price List references that the requester
// if authorized to view, given a ServiceCode , CurrencyCode , and an EffectiveDate
// . Use without a RegionCode filter to list Price List references from all
// available Amazon Web Services Regions. Use with a RegionCode filter to get the
// Price List reference that's specific to a specific Amazon Web Services Region.
// You can use the PriceListArn from the response to get your preferred Price List
// files through the GetPriceListFileUrl (https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_pricing_GetPriceListFileUrl.html)
// API.
func (c *Client) ListPriceLists(ctx context.Context, params *ListPriceListsInput, optFns ...func(*Options)) (*ListPriceListsOutput, error) {
	if params == nil {
		params = &ListPriceListsInput{}
	}

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

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

type ListPriceListsInput struct {

	// The three alphabetical character ISO-4217 currency code that the Price List
	// files are denominated in.
	//
	// This member is required.
	CurrencyCode *string

	// The date that the Price List file prices are effective from.
	//
	// This member is required.
	EffectiveDate *time.Time

	// The service code or the Savings Plan service code for the attributes that you
	// want to retrieve. For example, to get the list of applicable Amazon EC2 price
	// lists, use AmazonEC2 . For a full list of service codes containing On-Demand and
	// Reserved Instance (RI) pricing, use the DescribeServices (https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_pricing_DescribeServices.html#awscostmanagement-pricing_DescribeServices-request-FormatVersion)
	// API. To retrieve the Compute Savings Plan price lists, use ComputeSavingsPlans .
	// To retrieve Machine Learning Savings Plans price lists, use
	// MachineLearningSavingsPlans .
	//
	// This member is required.
	ServiceCode *string

	// The maximum number of results to return in the response.
	MaxResults *int32

	// The pagination token that indicates the next set of results that you want to
	// retrieve.
	NextToken *string

	// This is used to filter the Price List by Amazon Web Services Region. For
	// example, to get the price list only for the US East (N. Virginia) Region, use
	// us-east-1 . If nothing is specified, you retrieve price lists for all applicable
	// Regions. The available RegionCode list can be retrieved from GetAttributeValues (https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_pricing_GetAttributeValues.html)
	// API.
	RegionCode *string

	noSmithyDocumentSerde
}

type ListPriceListsOutput struct {

	// The pagination token that indicates the next set of results to retrieve.
	NextToken *string

	// The type of price list references that match your request.
	PriceLists []types.PriceList

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationListPriceListsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListPriceLists{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListPriceLists{}, middleware.After)
	if err != nil {
		return err
	}
	if err = addlegacyEndpointContextSetter(stack, options); 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 = addListPriceListsResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addOpListPriceListsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListPriceLists(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
	}
	if err = addendpointDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}

// ListPriceListsAPIClient is a client that implements the ListPriceLists
// operation.
type ListPriceListsAPIClient interface {
	ListPriceLists(context.Context, *ListPriceListsInput, ...func(*Options)) (*ListPriceListsOutput, error)
}

var _ ListPriceListsAPIClient = (*Client)(nil)

// ListPriceListsPaginatorOptions is the paginator options for ListPriceLists
type ListPriceListsPaginatorOptions struct {
	// The maximum number of results to return in the response.
	Limit int32

	// Set to true if pagination should stop if the service returns a pagination token
	// that matches the most recent token provided to the service.
	StopOnDuplicateToken bool
}

// ListPriceListsPaginator is a paginator for ListPriceLists
type ListPriceListsPaginator struct {
	options   ListPriceListsPaginatorOptions
	client    ListPriceListsAPIClient
	params    *ListPriceListsInput
	nextToken *string
	firstPage bool
}

// NewListPriceListsPaginator returns a new ListPriceListsPaginator
func NewListPriceListsPaginator(client ListPriceListsAPIClient, params *ListPriceListsInput, optFns ...func(*ListPriceListsPaginatorOptions)) *ListPriceListsPaginator {
	if params == nil {
		params = &ListPriceListsInput{}
	}

	options := ListPriceListsPaginatorOptions{}
	if params.MaxResults != nil {
		options.Limit = *params.MaxResults
	}

	for _, fn := range optFns {
		fn(&options)
	}

	return &ListPriceListsPaginator{
		options:   options,
		client:    client,
		params:    params,
		firstPage: true,
		nextToken: params.NextToken,
	}
}

// HasMorePages returns a boolean indicating whether more pages are available
func (p *ListPriceListsPaginator) HasMorePages() bool {
	return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}

// NextPage retrieves the next ListPriceLists page.
func (p *ListPriceListsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*ListPriceListsOutput, error) {
	if !p.HasMorePages() {
		return nil, fmt.Errorf("no more pages available")
	}

	params := *p.params
	params.NextToken = p.nextToken

	var limit *int32
	if p.options.Limit > 0 {
		limit = &p.options.Limit
	}
	params.MaxResults = limit

	result, err := p.client.ListPriceLists(ctx, &params, optFns...)
	if err != nil {
		return nil, err
	}
	p.firstPage = false

	prevToken := p.nextToken
	p.nextToken = result.NextToken

	if p.options.StopOnDuplicateToken &&
		prevToken != nil &&
		p.nextToken != nil &&
		*prevToken == *p.nextToken {
		p.nextToken = nil
	}

	return result, nil
}

func newServiceMetadataMiddleware_opListPriceLists(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "pricing",
		OperationName: "ListPriceLists",
	}
}

type opListPriceListsResolveEndpointMiddleware struct {
	EndpointResolver EndpointResolverV2
	BuiltInResolver  builtInParameterResolver
}

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

func (m *opListPriceListsResolveEndpointMiddleware) 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.EndpointResolver == nil {
		return out, metadata, fmt.Errorf("expected endpoint resolver to not be nil")
	}

	params := EndpointParameters{}

	m.BuiltInResolver.ResolveBuiltIns(&params)

	var resolvedEndpoint smithyendpoints.Endpoint
	resolvedEndpoint, err = m.EndpointResolver.ResolveEndpoint(ctx, params)
	if err != nil {
		return out, metadata, fmt.Errorf("failed to resolve service endpoint, %w", err)
	}

	req.URL = &resolvedEndpoint.URI

	for k := range resolvedEndpoint.Headers {
		req.Header.Set(
			k,
			resolvedEndpoint.Headers.Get(k),
		)
	}

	authSchemes, err := internalauth.GetAuthenticationSchemes(&resolvedEndpoint.Properties)
	if err != nil {
		var nfe *internalauth.NoAuthenticationSchemesFoundError
		if errors.As(err, &nfe) {
			// if no auth scheme is found, default to sigv4
			signingName := "pricing"
			signingRegion := m.BuiltInResolver.(*builtInResolver).Region
			ctx = awsmiddleware.SetSigningName(ctx, signingName)
			ctx = awsmiddleware.SetSigningRegion(ctx, signingRegion)

		}
		var ue *internalauth.UnSupportedAuthenticationSchemeSpecifiedError
		if errors.As(err, &ue) {
			return out, metadata, fmt.Errorf(
				"This operation requests signer version(s) %v but the client only supports %v",
				ue.UnsupportedSchemes,
				internalauth.SupportedSchemes,
			)
		}
	}

	for _, authScheme := range authSchemes {
		switch authScheme.(type) {
		case *internalauth.AuthenticationSchemeV4:
			v4Scheme, _ := authScheme.(*internalauth.AuthenticationSchemeV4)
			var signingName, signingRegion string
			if v4Scheme.SigningName == nil {
				signingName = "pricing"
			} else {
				signingName = *v4Scheme.SigningName
			}
			if v4Scheme.SigningRegion == nil {
				signingRegion = m.BuiltInResolver.(*builtInResolver).Region
			} else {
				signingRegion = *v4Scheme.SigningRegion
			}
			if v4Scheme.DisableDoubleEncoding != nil {
				// The signer sets an equivalent value at client initialization time.
				// Setting this context value will cause the signer to extract it
				// and override the value set at client initialization time.
				ctx = internalauth.SetDisableDoubleEncoding(ctx, *v4Scheme.DisableDoubleEncoding)
			}
			ctx = awsmiddleware.SetSigningName(ctx, signingName)
			ctx = awsmiddleware.SetSigningRegion(ctx, signingRegion)
			break
		case *internalauth.AuthenticationSchemeV4A:
			v4aScheme, _ := authScheme.(*internalauth.AuthenticationSchemeV4A)
			if v4aScheme.SigningName == nil {
				v4aScheme.SigningName = aws.String("pricing")
			}
			if v4aScheme.DisableDoubleEncoding != nil {
				// The signer sets an equivalent value at client initialization time.
				// Setting this context value will cause the signer to extract it
				// and override the value set at client initialization time.
				ctx = internalauth.SetDisableDoubleEncoding(ctx, *v4aScheme.DisableDoubleEncoding)
			}
			ctx = awsmiddleware.SetSigningName(ctx, *v4aScheme.SigningName)
			ctx = awsmiddleware.SetSigningRegion(ctx, v4aScheme.SigningRegionSet[0])
			break
		case *internalauth.AuthenticationSchemeNone:
			break
		}
	}

	return next.HandleSerialize(ctx, in)
}

func addListPriceListsResolveEndpointMiddleware(stack *middleware.Stack, options Options) error {
	return stack.Serialize.Insert(&opListPriceListsResolveEndpointMiddleware{
		EndpointResolver: options.EndpointResolverV2,
		BuiltInResolver: &builtInResolver{
			Region:       options.Region,
			UseDualStack: options.EndpointOptions.UseDualStackEndpoint,
			UseFIPS:      options.EndpointOptions.UseFIPSEndpoint,
			Endpoint:     options.BaseEndpoint,
		},
	}, "ResolveEndpoint", middleware.After)
}
