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

package ec2

import (
	"context"
	"fmt"
	"github.com/aws/aws-sdk-go-v2/service/ec2/types"
	"github.com/aws/smithy-go/middleware"
)

// Returns a list of transit gateway policy table entries.
func (c *Client) GetTransitGatewayPolicyTableEntries(ctx context.Context, params *GetTransitGatewayPolicyTableEntriesInput, optFns ...func(*Options)) (*GetTransitGatewayPolicyTableEntriesOutput, error) {
	if params == nil {
		params = &GetTransitGatewayPolicyTableEntriesInput{}
	}

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

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

type GetTransitGatewayPolicyTableEntriesInput struct {

	// The ID of the transit gateway policy table.
	//
	// This member is required.
	TransitGatewayPolicyTableId *string

	// Checks whether you have the required permissions for the action, without
	// actually making the request, and provides an error response. If you have the
	// required permissions, the error response is DryRunOperation . Otherwise, it is
	// UnauthorizedOperation .
	DryRun *bool

	// One or more filters. The possible values are:
	//
	//   - policy-rule-number - The rule number for the transit gateway policy table
	//   entry.
	//
	//   - target-route-table-id - The ID of the target route table.
	//
	//   - policy-rule.source-ip - The source CIDR block for the policy rule.
	//
	//   - policy-rule.destination-ip - The destination CIDR block for the policy rule.
	//
	//   - policy-rule.source-port - The source port or port range for the policy rule.
	//
	//   - policy-rule.destination-port - The destination port or port range for the
	//   policy rule.
	//
	//   - policy-rule.protocol - The protocol for the policy rule.
	//
	//   - policy-rule.meta-data.key - The metadata key for the policy rule.
	//
	//   - policy-rule.meta-data.value - The metadata value for the policy rule.
	Filters []types.Filter

	// The maximum number of results to return with a single call. To retrieve the
	// remaining results, make another call with the returned nextToken value.
	MaxResults *int32

	// The token for the next page of results.
	NextToken *string

	noSmithyDocumentSerde
}

type GetTransitGatewayPolicyTableEntriesOutput struct {

	// The token to use to retrieve the next page of results. This value is null when
	// there are no more results to return.
	NextToken *string

	// The entries for the transit gateway policy table.
	TransitGatewayPolicyTableEntries []types.TransitGatewayPolicyTableEntry

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetTransitGatewayPolicyTableEntriesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsEc2query_serializeOpGetTransitGatewayPolicyTableEntries{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsEc2query_deserializeOpGetTransitGatewayPolicyTableEntries{}, middleware.After)
	if 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 = addOpGetTransitGatewayPolicyTableEntriesValidationMiddleware(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 = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

// GetTransitGatewayPolicyTableEntriesPaginatorOptions is the paginator options
// for GetTransitGatewayPolicyTableEntries
type GetTransitGatewayPolicyTableEntriesPaginatorOptions struct {
	// The maximum number of results to return with a single call. To retrieve the
	// remaining results, make another call with the returned nextToken value.
	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
}

// GetTransitGatewayPolicyTableEntriesPaginator is a paginator for
// GetTransitGatewayPolicyTableEntries
type GetTransitGatewayPolicyTableEntriesPaginator struct {
	options   GetTransitGatewayPolicyTableEntriesPaginatorOptions
	client    GetTransitGatewayPolicyTableEntriesAPIClient
	params    *GetTransitGatewayPolicyTableEntriesInput
	nextToken *string
	firstPage bool
}

// NewGetTransitGatewayPolicyTableEntriesPaginator returns a new
// GetTransitGatewayPolicyTableEntriesPaginator
func NewGetTransitGatewayPolicyTableEntriesPaginator(client GetTransitGatewayPolicyTableEntriesAPIClient, params *GetTransitGatewayPolicyTableEntriesInput, optFns ...func(*GetTransitGatewayPolicyTableEntriesPaginatorOptions)) *GetTransitGatewayPolicyTableEntriesPaginator {
	if params == nil {
		params = &GetTransitGatewayPolicyTableEntriesInput{}
	}

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

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

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

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

// NextPage retrieves the next GetTransitGatewayPolicyTableEntries page.
func (p *GetTransitGatewayPolicyTableEntriesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*GetTransitGatewayPolicyTableEntriesOutput, 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.GetTransitGatewayPolicyTableEntries(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
}

// GetTransitGatewayPolicyTableEntriesAPIClient is a client that implements the
// GetTransitGatewayPolicyTableEntries operation.
type GetTransitGatewayPolicyTableEntriesAPIClient interface {
	GetTransitGatewayPolicyTableEntries(context.Context, *GetTransitGatewayPolicyTableEntriesInput, ...func(*Options)) (*GetTransitGatewayPolicyTableEntriesOutput, error)
}

var _ GetTransitGatewayPolicyTableEntriesAPIClient = (*Client)(nil)