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

package ecr

import (
	"context"
	"fmt"
	"github.com/aws/aws-sdk-go-v2/service/ecr/schemas"
	"github.com/aws/aws-sdk-go-v2/service/ecr/types"
	smithy "github.com/aws/smithy-go"
	"github.com/aws/smithy-go/middleware"
)

// Returns the pull through cache rules for a registry.
func (c *Client) DescribePullThroughCacheRules(ctx context.Context, params *DescribePullThroughCacheRulesInput, optFns ...func(*Options)) (*DescribePullThroughCacheRulesOutput, error) {
	if params == nil {
		params = &DescribePullThroughCacheRulesInput{}
	}

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

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

type DescribePullThroughCacheRulesInput struct {

	// The Amazon ECR repository prefixes associated with the pull through cache rules
	// to return. If no repository prefix value is specified, all pull through cache
	// rules are returned.
	EcrRepositoryPrefixes []string

	// The maximum number of pull through cache rules returned by
	// DescribePullThroughCacheRulesRequest in paginated output. When this parameter is
	// used, DescribePullThroughCacheRulesRequest only returns maxResults results in a
	// single page along with a nextToken response element. The remaining results of
	// the initial request can be seen by sending another
	// DescribePullThroughCacheRulesRequest request with the returned nextToken value.
	// This value can be between 1 and 1000. If this parameter is not used, then
	// DescribePullThroughCacheRulesRequest returns up to 100 results and a nextToken
	// value, if applicable.
	MaxResults *int32

	// The nextToken value returned from a previous paginated
	// DescribePullThroughCacheRulesRequest request where maxResults was used and the
	// results exceeded the value of that parameter. Pagination continues from the end
	// of the previous results that returned the nextToken value. This value is null
	// when there are no more results to return.
	NextToken *string

	// The Amazon Web Services account ID associated with the registry to return the
	// pull through cache rules for. If you do not specify a registry, the default
	// registry is assumed.
	RegistryId *string

	noSmithyDocumentSerde
}

func (v *DescribePullThroughCacheRulesInput) Serialize(s smithy.ShapeSerializer) {
	s.WriteStruct(schemas.DescribePullThroughCacheRulesRequest)
	v.SerializeMembers(s)
	s.CloseStruct()
}

func (v *DescribePullThroughCacheRulesInput) SerializeMembers(s smithy.ShapeSerializer) {
	serializePullThroughCacheRuleRepositoryPrefixList(s, schemas.DescribePullThroughCacheRulesRequest_ecrRepositoryPrefixes, v.EcrRepositoryPrefixes)
	if v.MaxResults != nil {
		s.WriteInt32(schemas.DescribePullThroughCacheRulesRequest_maxResults, *v.MaxResults)
	}
	if v.NextToken != nil {
		s.WriteString(schemas.DescribePullThroughCacheRulesRequest_nextToken, *v.NextToken)
	}
	if v.RegistryId != nil {
		s.WriteString(schemas.DescribePullThroughCacheRulesRequest_registryId, *v.RegistryId)
	}
}

type DescribePullThroughCacheRulesOutput struct {

	// The nextToken value to include in a future DescribePullThroughCacheRulesRequest
	// request. When the results of a DescribePullThroughCacheRulesRequest request
	// exceed maxResults , this value can be used to retrieve the next page of results.
	// This value is null when there are no more results to return.
	NextToken *string

	// The details of the pull through cache rules.
	PullThroughCacheRules []types.PullThroughCacheRule

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

	noSmithyDocumentSerde
}

func (v *DescribePullThroughCacheRulesOutput) Serialize(s smithy.ShapeSerializer) {
	s.WriteStruct(schemas.DescribePullThroughCacheRulesResponse)
	v.SerializeMembers(s)
	s.CloseStruct()
}

func (v *DescribePullThroughCacheRulesOutput) SerializeMembers(s smithy.ShapeSerializer) {
	if v.NextToken != nil {
		s.WriteString(schemas.DescribePullThroughCacheRulesResponse_nextToken, *v.NextToken)
	}
	serializePullThroughCacheRuleList(s, schemas.DescribePullThroughCacheRulesResponse_pullThroughCacheRules, v.PullThroughCacheRules)
}
func (v *DescribePullThroughCacheRulesOutput) Deserialize(d smithy.ShapeDeserializer) error {
	return smithy.ReadStruct(d, schemas.DescribePullThroughCacheRulesResponse, func(s *smithy.Schema) error {
		switch s {
		case schemas.DescribePullThroughCacheRulesResponse_nextToken:
			v.NextToken = new(string)
			return d.ReadString(schemas.DescribePullThroughCacheRulesResponse_nextToken, v.NextToken)
		case schemas.DescribePullThroughCacheRulesResponse_pullThroughCacheRules:
			return deserializePullThroughCacheRuleList(d, schemas.DescribePullThroughCacheRulesResponse_pullThroughCacheRules, &v.PullThroughCacheRules)
		}
		return nil
	})
}
func (c *Client) addOperationDescribePullThroughCacheRulesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&serializeRequestMiddleware{options: &options, operationSchema: smithy.NewOperationSchema(schemas.DescribePullThroughCacheRules, schemas.DescribePullThroughCacheRulesRequest, schemas.DescribePullThroughCacheRulesResponse)}, middleware.After); err != nil {
		return err
	}
	if err := stack.Deserialize.Add(&deserializeResponseMiddleware{options: &options, operationSchema: smithy.NewOperationSchema(schemas.DescribePullThroughCacheRules, schemas.DescribePullThroughCacheRulesRequest, schemas.DescribePullThroughCacheRulesResponse), output: &DescribePullThroughCacheRulesOutput{}}, middleware.After); err != nil {
		return err
	}

	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); 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 = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

// DescribePullThroughCacheRulesPaginatorOptions is the paginator options for
// DescribePullThroughCacheRules
type DescribePullThroughCacheRulesPaginatorOptions struct {
	// The maximum number of pull through cache rules returned by
	// DescribePullThroughCacheRulesRequest in paginated output. When this parameter is
	// used, DescribePullThroughCacheRulesRequest only returns maxResults results in a
	// single page along with a nextToken response element. The remaining results of
	// the initial request can be seen by sending another
	// DescribePullThroughCacheRulesRequest request with the returned nextToken value.
	// This value can be between 1 and 1000. If this parameter is not used, then
	// DescribePullThroughCacheRulesRequest returns up to 100 results and a nextToken
	// value, if applicable.
	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
}

// DescribePullThroughCacheRulesPaginator is a paginator for
// DescribePullThroughCacheRules
type DescribePullThroughCacheRulesPaginator struct {
	options   DescribePullThroughCacheRulesPaginatorOptions
	client    DescribePullThroughCacheRulesAPIClient
	params    *DescribePullThroughCacheRulesInput
	nextToken *string
	firstPage bool
}

// NewDescribePullThroughCacheRulesPaginator returns a new
// DescribePullThroughCacheRulesPaginator
func NewDescribePullThroughCacheRulesPaginator(client DescribePullThroughCacheRulesAPIClient, params *DescribePullThroughCacheRulesInput, optFns ...func(*DescribePullThroughCacheRulesPaginatorOptions)) *DescribePullThroughCacheRulesPaginator {
	if params == nil {
		params = &DescribePullThroughCacheRulesInput{}
	}

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

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

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

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

// NextPage retrieves the next DescribePullThroughCacheRules page.
func (p *DescribePullThroughCacheRulesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribePullThroughCacheRulesOutput, 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

	optFns = append([]func(*Options){
		addIsPaginatorUserAgent,
	}, optFns...)
	result, err := p.client.DescribePullThroughCacheRules(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
}

// DescribePullThroughCacheRulesAPIClient is a client that implements the
// DescribePullThroughCacheRules operation.
type DescribePullThroughCacheRulesAPIClient interface {
	DescribePullThroughCacheRules(context.Context, *DescribePullThroughCacheRulesInput, ...func(*Options)) (*DescribePullThroughCacheRulesOutput, error)
}

var _ DescribePullThroughCacheRulesAPIClient = (*Client)(nil)