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

package ssm

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

// Query a set of OpsItems. You must have permission in Identity and Access
// Management (IAM) to query a list of OpsItems. For more information, see [Set up OpsCenter]in the
// Amazon Web Services Systems Manager User Guide.
//
// Operations engineers and IT professionals use Amazon Web Services Systems
// Manager OpsCenter to view, investigate, and remediate operational issues
// impacting the performance and health of their Amazon Web Services resources. For
// more information, see [Amazon Web Services Systems Manager OpsCenter]in the Amazon Web Services Systems Manager User Guide.
//
// [Amazon Web Services Systems Manager OpsCenter]: https://docs.aws.amazon.com/systems-manager/latest/userguide/OpsCenter.html
// [Set up OpsCenter]: https://docs.aws.amazon.com/systems-manager/latest/userguide/OpsCenter-setup.html
func (c *Client) DescribeOpsItems(ctx context.Context, params *DescribeOpsItemsInput, optFns ...func(*Options)) (*DescribeOpsItemsOutput, error) {
	if params == nil {
		params = &DescribeOpsItemsInput{}
	}

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

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

type DescribeOpsItemsInput struct {

	// The maximum number of items to return for this call. The call also returns a
	// token that you can specify in a subsequent call to get the next set of results.
	MaxResults *int32

	// A token to start the list. Use this token to get the next set of results.
	NextToken *string

	// One or more filters to limit the response.
	//
	//   - Key: CreatedTime
	//
	// Operations: GreaterThan, LessThan
	//
	//   - Key: LastModifiedBy
	//
	// Operations: Contains, Equals
	//
	//   - Key: LastModifiedTime
	//
	// Operations: GreaterThan, LessThan
	//
	//   - Key: Priority
	//
	// Operations: Equals
	//
	//   - Key: Source
	//
	// Operations: Contains, Equals
	//
	//   - Key: Status
	//
	// Operations: Equals
	//
	//   - Key: Title*
	//
	// Operations: Equals,Contains
	//
	//   - Key: OperationalData**
	//
	// Operations: Equals
	//
	//   - Key: OperationalDataKey
	//
	// Operations: Equals
	//
	//   - Key: OperationalDataValue
	//
	// Operations: Equals, Contains
	//
	//   - Key: OpsItemId
	//
	// Operations: Equals
	//
	//   - Key: ResourceId
	//
	// Operations: Contains
	//
	//   - Key: AutomationId
	//
	// Operations: Equals
	//
	//   - Key: AccountId
	//
	// Operations: Equals
	//
	// *The Equals operator for Title matches the first 100 characters. If you specify
	// more than 100 characters, they system returns an error that the filter value
	// exceeds the length limit.
	//
	// **If you filter the response by using the OperationalData operator, specify a
	// key-value pair by using the following JSON format:
	// {"key":"key_name","value":"a_value"}
	OpsItemFilters []types.OpsItemFilter

	noSmithyDocumentSerde
}

type DescribeOpsItemsOutput struct {

	// The token for the next set of items to return. Use this token to get the next
	// set of results.
	NextToken *string

	// A list of OpsItems.
	OpsItemSummaries []types.OpsItemSummary

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationDescribeOpsItemsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpDescribeOpsItems{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpDescribeOpsItems{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DescribeOpsItems"); 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); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = 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 = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addTimeOffsetBuild(stack, c); err != nil {
		return err
	}
	if err = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addOpDescribeOpsItemsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeOpsItems(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
	}
	return nil
}

// DescribeOpsItemsPaginatorOptions is the paginator options for DescribeOpsItems
type DescribeOpsItemsPaginatorOptions struct {
	// The maximum number of items to return for this call. The call also returns a
	// token that you can specify in a subsequent call to get the next set of results.
	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
}

// DescribeOpsItemsPaginator is a paginator for DescribeOpsItems
type DescribeOpsItemsPaginator struct {
	options   DescribeOpsItemsPaginatorOptions
	client    DescribeOpsItemsAPIClient
	params    *DescribeOpsItemsInput
	nextToken *string
	firstPage bool
}

// NewDescribeOpsItemsPaginator returns a new DescribeOpsItemsPaginator
func NewDescribeOpsItemsPaginator(client DescribeOpsItemsAPIClient, params *DescribeOpsItemsInput, optFns ...func(*DescribeOpsItemsPaginatorOptions)) *DescribeOpsItemsPaginator {
	if params == nil {
		params = &DescribeOpsItemsInput{}
	}

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

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

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

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

// NextPage retrieves the next DescribeOpsItems page.
func (p *DescribeOpsItemsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeOpsItemsOutput, 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.DescribeOpsItems(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
}

// DescribeOpsItemsAPIClient is a client that implements the DescribeOpsItems
// operation.
type DescribeOpsItemsAPIClient interface {
	DescribeOpsItems(context.Context, *DescribeOpsItemsInput, ...func(*Options)) (*DescribeOpsItemsOutput, error)
}

var _ DescribeOpsItemsAPIClient = (*Client)(nil)

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