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

package ec2

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

// Describes your route tables. The default is to describe all your route tables.
// Alternatively, you can specify specific route table IDs or filter the results to
// include only the route tables that match specific criteria.
//
// Each subnet in your VPC must be associated with a route table. If a subnet is
// not explicitly associated with any route table, it is implicitly associated with
// the main route table. This command does not return the subnet ID for implicit
// associations.
//
// For more information, see [Route tables] in the Amazon VPC User Guide.
//
// [Route tables]: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Route_Tables.html
func (c *Client) DescribeRouteTables(ctx context.Context, params *DescribeRouteTablesInput, optFns ...func(*Options)) (*DescribeRouteTablesOutput, error) {
	if params == nil {
		params = &DescribeRouteTablesInput{}
	}

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

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

type DescribeRouteTablesInput struct {

	// 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

	// The filters.
	//
	//   - association.gateway-id - The ID of the gateway involved in the association.
	//
	//   - association.route-table-association-id - The ID of an association ID for the
	//   route table.
	//
	//   - association.route-table-id - The ID of the route table involved in the
	//   association.
	//
	//   - association.subnet-id - The ID of the subnet involved in the association.
	//
	//   - association.main - Indicates whether the route table is the main route table
	//   for the VPC ( true | false ). Route tables that do not have an association ID
	//   are not returned in the response.
	//
	//   - owner-id - The ID of the Amazon Web Services account that owns the route
	//   table.
	//
	//   - route-table-id - The ID of the route table.
	//
	//   - route.destination-cidr-block - The IPv4 CIDR range specified in a route in
	//   the table.
	//
	//   - route.destination-ipv6-cidr-block - The IPv6 CIDR range specified in a route
	//   in the route table.
	//
	//   - route.destination-prefix-list-id - The ID (prefix) of the Amazon Web
	//   Services service specified in a route in the table.
	//
	//   - route.egress-only-internet-gateway-id - The ID of an egress-only Internet
	//   gateway specified in a route in the route table.
	//
	//   - route.gateway-id - The ID of a gateway specified in a route in the table.
	//
	//   - route.instance-id - The ID of an instance specified in a route in the table.
	//
	//   - route.nat-gateway-id - The ID of a NAT gateway.
	//
	//   - route.transit-gateway-id - The ID of a transit gateway.
	//
	//   - route.origin - Describes how the route was created. CreateRouteTable
	//   indicates that the route was automatically created when the route table was
	//   created; CreateRoute indicates that the route was manually added to the route
	//   table; EnableVgwRoutePropagation indicates that the route was propagated by
	//   route propagation.
	//
	//   - route.state - The state of a route in the route table ( active | blackhole
	//   ). The blackhole state indicates that the route's target isn't available (for
	//   example, the specified gateway isn't attached to the VPC, the specified NAT
	//   instance has been terminated, and so on).
	//
	//   - route.vpc-peering-connection-id - The ID of a VPC peering connection
	//   specified in a route in the table.
	//
	//   - tag - The key/value combination of a tag assigned to the resource. Use the
	//   tag key in the filter name and the tag value as the filter value. For example,
	//   to find all resources that have a tag with the key Owner and the value TeamA ,
	//   specify tag:Owner for the filter name and TeamA for the filter value.
	//
	//   - tag-key - The key of a tag assigned to the resource. Use this filter to find
	//   all resources assigned a tag with a specific key, regardless of the tag value.
	//
	//   - vpc-id - The ID of the VPC for the route table.
	Filters []types.Filter

	// The maximum number of items to return for this request. To get the next page of
	// items, make another request with the token returned in the output. For more
	// information, see [Pagination].
	//
	// [Pagination]: https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Query-Requests.html#api-pagination
	MaxResults *int32

	// The token returned from a previous paginated request. Pagination continues from
	// the end of the items returned by the previous request.
	NextToken *string

	// The IDs of the route tables.
	RouteTableIds []string

	noSmithyDocumentSerde
}

// Contains the output of DescribeRouteTables.
type DescribeRouteTablesOutput struct {

	// The token to include in another request to get the next page of items. This
	// value is null when there are no more items to return.
	NextToken *string

	// Information about the route tables.
	RouteTables []types.RouteTable

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationDescribeRouteTablesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsEc2query_serializeOpDescribeRouteTables{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsEc2query_deserializeOpDescribeRouteTables{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DescribeRouteTables"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options, c); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addSpanRetryLoop(stack, options); 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 = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeRouteTables(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = 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 = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addInterceptBeforeRetryLoop(stack, options); err != nil {
		return err
	}
	if err = addInterceptAttempt(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

// DescribeRouteTablesPaginatorOptions is the paginator options for
// DescribeRouteTables
type DescribeRouteTablesPaginatorOptions struct {
	// The maximum number of items to return for this request. To get the next page of
	// items, make another request with the token returned in the output. For more
	// information, see [Pagination].
	//
	// [Pagination]: https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Query-Requests.html#api-pagination
	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
}

// DescribeRouteTablesPaginator is a paginator for DescribeRouteTables
type DescribeRouteTablesPaginator struct {
	options   DescribeRouteTablesPaginatorOptions
	client    DescribeRouteTablesAPIClient
	params    *DescribeRouteTablesInput
	nextToken *string
	firstPage bool
}

// NewDescribeRouteTablesPaginator returns a new DescribeRouteTablesPaginator
func NewDescribeRouteTablesPaginator(client DescribeRouteTablesAPIClient, params *DescribeRouteTablesInput, optFns ...func(*DescribeRouteTablesPaginatorOptions)) *DescribeRouteTablesPaginator {
	if params == nil {
		params = &DescribeRouteTablesInput{}
	}

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

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

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

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

// NextPage retrieves the next DescribeRouteTables page.
func (p *DescribeRouteTablesPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeRouteTablesOutput, 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.DescribeRouteTables(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
}

// DescribeRouteTablesAPIClient is a client that implements the
// DescribeRouteTables operation.
type DescribeRouteTablesAPIClient interface {
	DescribeRouteTables(context.Context, *DescribeRouteTablesInput, ...func(*Options)) (*DescribeRouteTablesOutput, error)
}

var _ DescribeRouteTablesAPIClient = (*Client)(nil)

func newServiceMetadataMiddleware_opDescribeRouteTables(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "DescribeRouteTables",
	}
}