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

package pricing

import (
	"context"
	"fmt"
	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/pricing/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Returns a list of all products that match the filter criteria.
func (c *Client) GetProducts(ctx context.Context, params *GetProductsInput, optFns ...func(*Options)) (*GetProductsOutput, error) {
	if params == nil {
		params = &GetProductsInput{}
	}

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

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

type GetProductsInput struct {

	// The code for the service whose products you want to retrieve.
	//
	// This member is required.
	ServiceCode *string

	// The list of filters that limit the returned products. only products that match
	// all filters are returned.
	Filters []types.Filter

	// The format version that you want the response to be in. Valid values are: aws_v1
	FormatVersion *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

	noSmithyDocumentSerde
}

type GetProductsOutput struct {

	// The format version of the response. For example, aws_v1.
	FormatVersion *string

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

	// The list of products that match your filters. The list contains both the product
	// metadata and the price information.
	PriceList []string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetProductsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpGetProducts{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpGetProducts{}, 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 = addOpGetProductsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetProducts(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
}

// GetProductsAPIClient is a client that implements the GetProducts operation.
type GetProductsAPIClient interface {
	GetProducts(context.Context, *GetProductsInput, ...func(*Options)) (*GetProductsOutput, error)
}

var _ GetProductsAPIClient = (*Client)(nil)

// GetProductsPaginatorOptions is the paginator options for GetProducts
type GetProductsPaginatorOptions 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
}

// GetProductsPaginator is a paginator for GetProducts
type GetProductsPaginator struct {
	options   GetProductsPaginatorOptions
	client    GetProductsAPIClient
	params    *GetProductsInput
	nextToken *string
	firstPage bool
}

// NewGetProductsPaginator returns a new GetProductsPaginator
func NewGetProductsPaginator(client GetProductsAPIClient, params *GetProductsInput, optFns ...func(*GetProductsPaginatorOptions)) *GetProductsPaginator {
	if params == nil {
		params = &GetProductsInput{}
	}

	options := GetProductsPaginatorOptions{}
	if params.MaxResults != 0 {
		options.Limit = params.MaxResults
	}

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

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

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

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

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

	params.MaxResults = p.options.Limit

	result, err := p.client.GetProducts(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_opGetProducts(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "pricing",
		OperationName: "GetProducts",
	}
}
