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

package dynamodb

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/dynamodb/types"
	internalEndpointDiscovery "github.com/aws/aws-sdk-go-v2/service/internal/endpoint-discovery"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// TransactWriteItems is a synchronous write operation that groups up to 100
// action requests. These actions can target items in different tables, but not in
// different Amazon Web Services accounts or Regions, and no two actions can target
// the same item. For example, you cannot both ConditionCheck and Update the same
// item. The aggregate size of the items in the transaction cannot exceed 4 MB. The
// actions are completed atomically so that either all of them succeed, or all of
// them fail. They are defined by the following objects:
//   - Put — Initiates a PutItem operation to write a new item. This structure
//     specifies the primary key of the item to be written, the name of the table to
//     write it in, an optional condition expression that must be satisfied for the
//     write to succeed, a list of the item's attributes, and a field indicating
//     whether to retrieve the item's attributes if the condition is not met.
//   - Update — Initiates an UpdateItem operation to update an existing item. This
//     structure specifies the primary key of the item to be updated, the name of the
//     table where it resides, an optional condition expression that must be satisfied
//     for the update to succeed, an expression that defines one or more attributes to
//     be updated, and a field indicating whether to retrieve the item's attributes if
//     the condition is not met.
//   - Delete — Initiates a DeleteItem operation to delete an existing item. This
//     structure specifies the primary key of the item to be deleted, the name of the
//     table where it resides, an optional condition expression that must be satisfied
//     for the deletion to succeed, and a field indicating whether to retrieve the
//     item's attributes if the condition is not met.
//   - ConditionCheck — Applies a condition to an item that is not being modified
//     by the transaction. This structure specifies the primary key of the item to be
//     checked, the name of the table where it resides, a condition expression that
//     must be satisfied for the transaction to succeed, and a field indicating whether
//     to retrieve the item's attributes if the condition is not met.
//
// DynamoDB rejects the entire TransactWriteItems request if any of the following
// is true:
//   - A condition in one of the condition expressions is not met.
//   - An ongoing operation is in the process of updating the same item.
//   - There is insufficient provisioned capacity for the transaction to be
//     completed.
//   - An item size becomes too large (bigger than 400 KB), a local secondary
//     index (LSI) becomes too large, or a similar validation error occurs because of
//     changes made by the transaction.
//   - The aggregate size of the items in the transaction exceeds 4 MB.
//   - There is a user error, such as an invalid data format.
func (c *Client) TransactWriteItems(ctx context.Context, params *TransactWriteItemsInput, optFns ...func(*Options)) (*TransactWriteItemsOutput, error) {
	if params == nil {
		params = &TransactWriteItemsInput{}
	}

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

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

type TransactWriteItemsInput struct {

	// An ordered array of up to 100 TransactWriteItem objects, each of which contains
	// a ConditionCheck , Put , Update , or Delete object. These can operate on items
	// in different tables, but the tables must reside in the same Amazon Web Services
	// account and Region, and no two of them can operate on the same item.
	//
	// This member is required.
	TransactItems []types.TransactWriteItem

	// Providing a ClientRequestToken makes the call to TransactWriteItems idempotent,
	// meaning that multiple identical calls have the same effect as one single call.
	// Although multiple identical calls using the same client request token produce
	// the same result on the server (no side effects), the responses to the calls
	// might not be the same. If the ReturnConsumedCapacity parameter is set, then the
	// initial TransactWriteItems call returns the amount of write capacity units
	// consumed in making the changes. Subsequent TransactWriteItems calls with the
	// same client token return the number of read capacity units consumed in reading
	// the item. A client request token is valid for 10 minutes after the first request
	// that uses it is completed. After 10 minutes, any request with the same client
	// token is treated as a new request. Do not resubmit the same request with the
	// same client token for more than 10 minutes, or the result might not be
	// idempotent. If you submit a request with the same client token but a change in
	// other parameters within the 10-minute idempotency window, DynamoDB returns an
	// IdempotentParameterMismatch exception.
	ClientRequestToken *string

	// Determines the level of detail about either provisioned or on-demand throughput
	// consumption that is returned in the response:
	//   - INDEXES - The response includes the aggregate ConsumedCapacity for the
	//   operation, together with ConsumedCapacity for each table and secondary index
	//   that was accessed. Note that some operations, such as GetItem and BatchGetItem
	//   , do not access any indexes at all. In these cases, specifying INDEXES will
	//   only return ConsumedCapacity information for table(s).
	//   - TOTAL - The response includes only the aggregate ConsumedCapacity for the
	//   operation.
	//   - NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity types.ReturnConsumedCapacity

	// Determines whether item collection metrics are returned. If set to SIZE , the
	// response includes statistics about item collections (if any), that were modified
	// during the operation and are returned in the response. If set to NONE (the
	// default), no statistics are returned.
	ReturnItemCollectionMetrics types.ReturnItemCollectionMetrics

	noSmithyDocumentSerde
}

type TransactWriteItemsOutput struct {

	// The capacity units consumed by the entire TransactWriteItems operation. The
	// values of the list are ordered according to the ordering of the TransactItems
	// request parameter.
	ConsumedCapacity []types.ConsumedCapacity

	// A list of tables that were processed by TransactWriteItems and, for each table,
	// information about any item collections that were affected by individual
	// UpdateItem , PutItem , or DeleteItem operations.
	ItemCollectionMetrics map[string][]types.ItemCollectionMetrics

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationTransactWriteItemsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpTransactWriteItems{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpTransactWriteItems{}, 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, 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 = addOpTransactWriteItemsDiscoverEndpointMiddleware(stack, options, c); err != nil {
		return err
	}
	if err = addIdempotencyToken_opTransactWriteItemsMiddleware(stack, options); err != nil {
		return err
	}
	if err = addOpTransactWriteItemsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opTransactWriteItems(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = awsmiddleware.AddRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addValidateResponseChecksum(stack, options); err != nil {
		return err
	}
	if err = addAcceptEncodingGzip(stack, options); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	return nil
}

func addOpTransactWriteItemsDiscoverEndpointMiddleware(stack *middleware.Stack, o Options, c *Client) error {
	return stack.Serialize.Insert(&internalEndpointDiscovery.DiscoverEndpoint{
		Options: []func(*internalEndpointDiscovery.DiscoverEndpointOptions){
			func(opt *internalEndpointDiscovery.DiscoverEndpointOptions) {
				opt.DisableHTTPS = o.EndpointOptions.DisableHTTPS
				opt.Logger = o.Logger
			},
		},
		DiscoverOperation:            c.fetchOpTransactWriteItemsDiscoverEndpoint,
		EndpointDiscoveryEnableState: o.EndpointDiscovery.EnableEndpointDiscovery,
		EndpointDiscoveryRequired:    false,
	}, "ResolveEndpoint", middleware.After)
}

func (c *Client) fetchOpTransactWriteItemsDiscoverEndpoint(ctx context.Context, input interface{}, optFns ...func(*internalEndpointDiscovery.DiscoverEndpointOptions)) (internalEndpointDiscovery.WeightedAddress, error) {
	in, ok := input.(*TransactWriteItemsInput)
	if !ok {
		return internalEndpointDiscovery.WeightedAddress{}, fmt.Errorf("unknown input type %T", input)
	}
	_ = in

	identifierMap := make(map[string]string, 0)

	key := fmt.Sprintf("DynamoDB.%v", identifierMap)

	if v, ok := c.endpointCache.Get(key); ok {
		return v, nil
	}

	discoveryOperationInput := &DescribeEndpointsInput{}

	opt := internalEndpointDiscovery.DiscoverEndpointOptions{}
	for _, fn := range optFns {
		fn(&opt)
	}

	go c.handleEndpointDiscoveryFromService(ctx, discoveryOperationInput, key, opt)
	return internalEndpointDiscovery.WeightedAddress{}, nil
}

type idempotencyToken_initializeOpTransactWriteItems struct {
	tokenProvider IdempotencyTokenProvider
}

func (*idempotencyToken_initializeOpTransactWriteItems) ID() string {
	return "OperationIdempotencyTokenAutoFill"
}

func (m *idempotencyToken_initializeOpTransactWriteItems) HandleInitialize(ctx context.Context, in middleware.InitializeInput, next middleware.InitializeHandler) (
	out middleware.InitializeOutput, metadata middleware.Metadata, err error,
) {
	if m.tokenProvider == nil {
		return next.HandleInitialize(ctx, in)
	}

	input, ok := in.Parameters.(*TransactWriteItemsInput)
	if !ok {
		return out, metadata, fmt.Errorf("expected middleware input to be of type *TransactWriteItemsInput ")
	}

	if input.ClientRequestToken == nil {
		t, err := m.tokenProvider.GetIdempotencyToken()
		if err != nil {
			return out, metadata, err
		}
		input.ClientRequestToken = &t
	}
	return next.HandleInitialize(ctx, in)
}
func addIdempotencyToken_opTransactWriteItemsMiddleware(stack *middleware.Stack, cfg Options) error {
	return stack.Initialize.Add(&idempotencyToken_initializeOpTransactWriteItems{tokenProvider: cfg.IdempotencyTokenProvider}, middleware.Before)
}

func newServiceMetadataMiddleware_opTransactWriteItems(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "dynamodb",
		OperationName: "TransactWriteItems",
	}
}