// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Code generated by protoc-gen-go_gapic. DO NOT EDIT.

package generativelanguage

import (
	"bytes"
	"context"
	"errors"
	"fmt"
	"log/slog"
	"math"
	"net/http"
	"net/url"
	"time"

	generativelanguagepb "cloud.google.com/go/ai/generativelanguage/apiv1/generativelanguagepb"
	longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	gtransport "google.golang.org/api/transport/grpc"
	httptransport "google.golang.org/api/transport/http"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/proto"
)

var newGenerativeClientHook clientHook

// GenerativeCallOptions contains the retry settings for each method of GenerativeClient.
type GenerativeCallOptions struct {
	GenerateContent       []gax.CallOption
	StreamGenerateContent []gax.CallOption
	EmbedContent          []gax.CallOption
	BatchEmbedContents    []gax.CallOption
	CountTokens           []gax.CallOption
	CancelOperation       []gax.CallOption
	GetOperation          []gax.CallOption
	ListOperations        []gax.CallOption
}

func defaultGenerativeGRPCClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("generativelanguage.googleapis.com:443"),
		internaloption.WithDefaultEndpointTemplate("generativelanguage.UNIVERSE_DOMAIN:443"),
		internaloption.WithDefaultMTLSEndpoint("generativelanguage.mtls.googleapis.com:443"),
		internaloption.WithDefaultUniverseDomain("googleapis.com"),
		internaloption.WithDefaultAudience("https://generativelanguage.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableJwtWithScope(),
		internaloption.EnableNewAuthLibrary(),
		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
}

func defaultGenerativeCallOptions() *GenerativeCallOptions {
	return &GenerativeCallOptions{
		GenerateContent: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		StreamGenerateContent: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		EmbedContent: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		BatchEmbedContents: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CountTokens: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CancelOperation: []gax.CallOption{},
		GetOperation:    []gax.CallOption{},
		ListOperations:  []gax.CallOption{},
	}
}

func defaultGenerativeRESTCallOptions() *GenerativeCallOptions {
	return &GenerativeCallOptions{
		GenerateContent: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		StreamGenerateContent: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		EmbedContent: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		BatchEmbedContents: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CountTokens: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusServiceUnavailable)
			}),
		},
		CancelOperation: []gax.CallOption{},
		GetOperation:    []gax.CallOption{},
		ListOperations:  []gax.CallOption{},
	}
}

// internalGenerativeClient is an interface that defines the methods available from Generative Language API.
type internalGenerativeClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	GenerateContent(context.Context, *generativelanguagepb.GenerateContentRequest, ...gax.CallOption) (*generativelanguagepb.GenerateContentResponse, error)
	StreamGenerateContent(context.Context, *generativelanguagepb.GenerateContentRequest, ...gax.CallOption) (generativelanguagepb.GenerativeService_StreamGenerateContentClient, error)
	EmbedContent(context.Context, *generativelanguagepb.EmbedContentRequest, ...gax.CallOption) (*generativelanguagepb.EmbedContentResponse, error)
	BatchEmbedContents(context.Context, *generativelanguagepb.BatchEmbedContentsRequest, ...gax.CallOption) (*generativelanguagepb.BatchEmbedContentsResponse, error)
	CountTokens(context.Context, *generativelanguagepb.CountTokensRequest, ...gax.CallOption) (*generativelanguagepb.CountTokensResponse, error)
	CancelOperation(context.Context, *longrunningpb.CancelOperationRequest, ...gax.CallOption) error
	GetOperation(context.Context, *longrunningpb.GetOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
	ListOperations(context.Context, *longrunningpb.ListOperationsRequest, ...gax.CallOption) *OperationIterator
}

// GenerativeClient is a client for interacting with Generative Language API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// API for using Large Models that generate multimodal content and have
// additional capabilities beyond text generation.
type GenerativeClient struct {
	// The internal transport-dependent client.
	internalClient internalGenerativeClient

	// The call options for this service.
	CallOptions *GenerativeCallOptions
}

// Wrapper methods routed to the internal client.

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *GenerativeClient) Close() error {
	return c.internalClient.Close()
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *GenerativeClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *GenerativeClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// GenerateContent generates a model response given an input GenerateContentRequest.
// Refer to the text generation
// guide (at https://ai.google.dev/gemini-api/docs/text-generation) for detailed
// usage information. Input capabilities differ between models, including
// tuned models. Refer to the model
// guide (at https://ai.google.dev/gemini-api/docs/models/gemini) and tuning
// guide (at https://ai.google.dev/gemini-api/docs/model-tuning) for details.
func (c *GenerativeClient) GenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (*generativelanguagepb.GenerateContentResponse, error) {
	return c.internalClient.GenerateContent(ctx, req, opts...)
}

// StreamGenerateContent generates a streamed
// response (at https://ai.google.dev/gemini-api/docs/text-generation?lang=python#generate-a-text-stream)
// from the model given an input GenerateContentRequest.
func (c *GenerativeClient) StreamGenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (generativelanguagepb.GenerativeService_StreamGenerateContentClient, error) {
	return c.internalClient.StreamGenerateContent(ctx, req, opts...)
}

// EmbedContent generates a text embedding vector from the input Content using the
// specified Gemini Embedding
// model (at https://ai.google.dev/gemini-api/docs/models/gemini#text-embedding).
func (c *GenerativeClient) EmbedContent(ctx context.Context, req *generativelanguagepb.EmbedContentRequest, opts ...gax.CallOption) (*generativelanguagepb.EmbedContentResponse, error) {
	return c.internalClient.EmbedContent(ctx, req, opts...)
}

// BatchEmbedContents generates multiple embedding vectors from the input Content which
// consists of a batch of strings represented as EmbedContentRequest
// objects.
func (c *GenerativeClient) BatchEmbedContents(ctx context.Context, req *generativelanguagepb.BatchEmbedContentsRequest, opts ...gax.CallOption) (*generativelanguagepb.BatchEmbedContentsResponse, error) {
	return c.internalClient.BatchEmbedContents(ctx, req, opts...)
}

// CountTokens runs a model’s tokenizer on input Content and returns the token count.
// Refer to the tokens guide (at https://ai.google.dev/gemini-api/docs/tokens)
// to learn more about tokens.
func (c *GenerativeClient) CountTokens(ctx context.Context, req *generativelanguagepb.CountTokensRequest, opts ...gax.CallOption) (*generativelanguagepb.CountTokensResponse, error) {
	return c.internalClient.CountTokens(ctx, req, opts...)
}

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *GenerativeClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.CancelOperation(ctx, req, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *GenerativeClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	return c.internalClient.GetOperation(ctx, req, opts...)
}

// ListOperations is a utility method from google.longrunning.Operations.
func (c *GenerativeClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	return c.internalClient.ListOperations(ctx, req, opts...)
}

// generativeGRPCClient is a client for interacting with Generative Language API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type generativeGRPCClient struct {
	// Connection pool of gRPC connections to the service.
	connPool gtransport.ConnPool

	// Points back to the CallOptions field of the containing GenerativeClient
	CallOptions **GenerativeCallOptions

	// The gRPC API client.
	generativeClient generativelanguagepb.GenerativeServiceClient

	operationsClient longrunningpb.OperationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogHeaders []string

	logger *slog.Logger
}

// NewGenerativeClient creates a new generative service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// API for using Large Models that generate multimodal content and have
// additional capabilities beyond text generation.
func NewGenerativeClient(ctx context.Context, opts ...option.ClientOption) (*GenerativeClient, error) {
	clientOpts := defaultGenerativeGRPCClientOptions()
	if newGenerativeClientHook != nil {
		hookOpts, err := newGenerativeClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
	if err != nil {
		return nil, err
	}
	client := GenerativeClient{CallOptions: defaultGenerativeCallOptions()}

	c := &generativeGRPCClient{
		connPool:         connPool,
		generativeClient: generativelanguagepb.NewGenerativeServiceClient(connPool),
		CallOptions:      &client.CallOptions,
		logger:           internaloption.GetLogger(opts),
		operationsClient: longrunningpb.NewOperationsClient(connPool),
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *generativeGRPCClient) Connection() *grpc.ClientConn {
	return c.connPool.Conn()
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *generativeGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogHeaders = []string{
		"x-goog-api-client", gax.XGoogHeader(kv...),
	}
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *generativeGRPCClient) Close() error {
	return c.connPool.Close()
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type generativeRESTClient struct {
	// The http endpoint to connect to.
	endpoint string

	// The http client.
	httpClient *http.Client

	// The x-goog-* headers to be sent with each request.
	xGoogHeaders []string

	// Points back to the CallOptions field of the containing GenerativeClient
	CallOptions **GenerativeCallOptions

	logger *slog.Logger
}

// NewGenerativeRESTClient creates a new generative service rest client.
//
// API for using Large Models that generate multimodal content and have
// additional capabilities beyond text generation.
func NewGenerativeRESTClient(ctx context.Context, opts ...option.ClientOption) (*GenerativeClient, error) {
	clientOpts := append(defaultGenerativeRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultGenerativeRESTCallOptions()
	c := &generativeRESTClient{
		endpoint:    endpoint,
		httpClient:  httpClient,
		CallOptions: &callOpts,
		logger:      internaloption.GetLogger(opts),
	}
	c.setGoogleClientInfo()

	return &GenerativeClient{internalClient: c, CallOptions: callOpts}, nil
}

func defaultGenerativeRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://generativelanguage.googleapis.com"),
		internaloption.WithDefaultEndpointTemplate("https://generativelanguage.UNIVERSE_DOMAIN"),
		internaloption.WithDefaultMTLSEndpoint("https://generativelanguage.mtls.googleapis.com"),
		internaloption.WithDefaultUniverseDomain("googleapis.com"),
		internaloption.WithDefaultAudience("https://generativelanguage.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableNewAuthLibrary(),
	}
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *generativeRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN")
	c.xGoogHeaders = []string{
		"x-goog-api-client", gax.XGoogHeader(kv...),
	}
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *generativeRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated: This method always returns nil.
func (c *generativeRESTClient) Connection() *grpc.ClientConn {
	return nil
}
func (c *generativeGRPCClient) GenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (*generativelanguagepb.GenerateContentResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GenerateContent[0:len((*c.CallOptions).GenerateContent):len((*c.CallOptions).GenerateContent)], opts...)
	var resp *generativelanguagepb.GenerateContentResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.generativeClient.GenerateContent, req, settings.GRPC, c.logger, "GenerateContent")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) StreamGenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (generativelanguagepb.GenerativeService_StreamGenerateContentClient, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).StreamGenerateContent[0:len((*c.CallOptions).StreamGenerateContent):len((*c.CallOptions).StreamGenerateContent)], opts...)
	var resp generativelanguagepb.GenerativeService_StreamGenerateContentClient
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		c.logger.DebugContext(ctx, "api streaming client request", "serviceName", serviceName, "rpcName", "StreamGenerateContent")
		resp, err = c.generativeClient.StreamGenerateContent(ctx, req, settings.GRPC...)
		c.logger.DebugContext(ctx, "api streaming client response", "serviceName", serviceName, "rpcName", "StreamGenerateContent")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) EmbedContent(ctx context.Context, req *generativelanguagepb.EmbedContentRequest, opts ...gax.CallOption) (*generativelanguagepb.EmbedContentResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).EmbedContent[0:len((*c.CallOptions).EmbedContent):len((*c.CallOptions).EmbedContent)], opts...)
	var resp *generativelanguagepb.EmbedContentResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.generativeClient.EmbedContent, req, settings.GRPC, c.logger, "EmbedContent")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) BatchEmbedContents(ctx context.Context, req *generativelanguagepb.BatchEmbedContentsRequest, opts ...gax.CallOption) (*generativelanguagepb.BatchEmbedContentsResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).BatchEmbedContents[0:len((*c.CallOptions).BatchEmbedContents):len((*c.CallOptions).BatchEmbedContents)], opts...)
	var resp *generativelanguagepb.BatchEmbedContentsResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.generativeClient.BatchEmbedContents, req, settings.GRPC, c.logger, "BatchEmbedContents")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) CountTokens(ctx context.Context, req *generativelanguagepb.CountTokensRequest, opts ...gax.CallOption) (*generativelanguagepb.CountTokensResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CountTokens[0:len((*c.CallOptions).CountTokens):len((*c.CallOptions).CountTokens)], opts...)
	var resp *generativelanguagepb.CountTokensResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.generativeClient.CountTokens, req, settings.GRPC, c.logger, "CountTokens")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CancelOperation[0:len((*c.CallOptions).CancelOperation):len((*c.CallOptions).CancelOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = executeRPC(ctx, c.operationsClient.CancelOperation, req, settings.GRPC, c.logger, "CancelOperation")
		return err
	}, opts...)
	return err
}

func (c *generativeGRPCClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.operationsClient.GetOperation, req, settings.GRPC, c.logger, "GetOperation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *generativeGRPCClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListOperations[0:len((*c.CallOptions).ListOperations):len((*c.CallOptions).ListOperations)], opts...)
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = executeRPC(ctx, c.operationsClient.ListOperations, req, settings.GRPC, c.logger, "ListOperations")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetOperations(), resp.GetNextPageToken(), nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, items...)
		return nextPageToken, nil
	}

	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

// GenerateContent generates a model response given an input GenerateContentRequest.
// Refer to the text generation
// guide (at https://ai.google.dev/gemini-api/docs/text-generation) for detailed
// usage information. Input capabilities differ between models, including
// tuned models. Refer to the model
// guide (at https://ai.google.dev/gemini-api/docs/models/gemini) and tuning
// guide (at https://ai.google.dev/gemini-api/docs/model-tuning) for details.
func (c *generativeRESTClient) GenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (*generativelanguagepb.GenerateContentResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:generateContent", req.GetModel())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).GenerateContent[0:len((*c.CallOptions).GenerateContent):len((*c.CallOptions).GenerateContent)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &generativelanguagepb.GenerateContentResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "GenerateContent")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// StreamGenerateContent generates a streamed
// response (at https://ai.google.dev/gemini-api/docs/text-generation?lang=python#generate-a-text-stream)
// from the model given an input GenerateContentRequest.
func (c *generativeRESTClient) StreamGenerateContent(ctx context.Context, req *generativelanguagepb.GenerateContentRequest, opts ...gax.CallOption) (generativelanguagepb.GenerativeService_StreamGenerateContentClient, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:streamGenerateContent", req.GetModel())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	var streamClient *streamGenerateContentRESTClient
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		httpRsp, err := executeStreamingHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "StreamGenerateContent")
		if err != nil {
			return err
		}

		streamClient = &streamGenerateContentRESTClient{
			ctx:    ctx,
			md:     metadata.MD(httpRsp.Header),
			stream: gax.NewProtoJSONStreamReader(httpRsp.Body, (&generativelanguagepb.GenerateContentResponse{}).ProtoReflect().Type()),
		}
		return nil
	}, opts...)

	return streamClient, e
}

// streamGenerateContentRESTClient is the stream client used to consume the server stream created by
// the REST implementation of StreamGenerateContent.
type streamGenerateContentRESTClient struct {
	ctx    context.Context
	md     metadata.MD
	stream *gax.ProtoJSONStream
}

func (c *streamGenerateContentRESTClient) Recv() (*generativelanguagepb.GenerateContentResponse, error) {
	if err := c.ctx.Err(); err != nil {
		defer c.stream.Close()
		return nil, err
	}
	msg, err := c.stream.Recv()
	if err != nil {
		defer c.stream.Close()
		return nil, err
	}
	res := msg.(*generativelanguagepb.GenerateContentResponse)
	return res, nil
}

func (c *streamGenerateContentRESTClient) Header() (metadata.MD, error) {
	return c.md, nil
}

func (c *streamGenerateContentRESTClient) Trailer() metadata.MD {
	return c.md
}

func (c *streamGenerateContentRESTClient) CloseSend() error {
	// This is a no-op to fulfill the interface.
	return errors.New("this method is not implemented for a server-stream")
}

func (c *streamGenerateContentRESTClient) Context() context.Context {
	return c.ctx
}

func (c *streamGenerateContentRESTClient) SendMsg(m interface{}) error {
	// This is a no-op to fulfill the interface.
	return errors.New("this method is not implemented for a server-stream")
}

func (c *streamGenerateContentRESTClient) RecvMsg(m interface{}) error {
	// This is a no-op to fulfill the interface.
	return errors.New("this method is not implemented, use Recv")
}

// EmbedContent generates a text embedding vector from the input Content using the
// specified Gemini Embedding
// model (at https://ai.google.dev/gemini-api/docs/models/gemini#text-embedding).
func (c *generativeRESTClient) EmbedContent(ctx context.Context, req *generativelanguagepb.EmbedContentRequest, opts ...gax.CallOption) (*generativelanguagepb.EmbedContentResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:embedContent", req.GetModel())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).EmbedContent[0:len((*c.CallOptions).EmbedContent):len((*c.CallOptions).EmbedContent)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &generativelanguagepb.EmbedContentResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "EmbedContent")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// BatchEmbedContents generates multiple embedding vectors from the input Content which
// consists of a batch of strings represented as EmbedContentRequest
// objects.
func (c *generativeRESTClient) BatchEmbedContents(ctx context.Context, req *generativelanguagepb.BatchEmbedContentsRequest, opts ...gax.CallOption) (*generativelanguagepb.BatchEmbedContentsResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:batchEmbedContents", req.GetModel())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).BatchEmbedContents[0:len((*c.CallOptions).BatchEmbedContents):len((*c.CallOptions).BatchEmbedContents)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &generativelanguagepb.BatchEmbedContentsResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "BatchEmbedContents")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// CountTokens runs a model’s tokenizer on input Content and returns the token count.
// Refer to the tokens guide (at https://ai.google.dev/gemini-api/docs/tokens)
// to learn more about tokens.
func (c *generativeRESTClient) CountTokens(ctx context.Context, req *generativelanguagepb.CountTokensRequest, opts ...gax.CallOption) (*generativelanguagepb.CountTokensResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:countTokens", req.GetModel())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).CountTokens[0:len((*c.CallOptions).CountTokens):len((*c.CallOptions).CountTokens)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &generativelanguagepb.CountTokensResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "CountTokens")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *generativeRESTClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v:cancel", req.GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	return gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		_, err = executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "CancelOperation")
		return err
	}, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *generativeRESTClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/v1/%v", req.GetName())

	params := url.Values{}
	params.Add("$alt", "json;enum-encoding=int")

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &longrunningpb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "GetOperation")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// ListOperations is a utility method from google.longrunning.Operations.
func (c *generativeRESTClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		baseUrl, err := url.Parse(c.endpoint)
		if err != nil {
			return nil, "", err
		}
		baseUrl.Path += fmt.Sprintf("/v1/%v", req.GetName())

		params := url.Values{}
		params.Add("$alt", "json;enum-encoding=int")
		if req.GetFilter() != "" {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		if req.GetPageSize() != 0 {
			params.Add("pageSize", fmt.Sprintf("%v", req.GetPageSize()))
		}
		if req.GetPageToken() != "" {
			params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
		}

		baseUrl.RawQuery = params.Encode()

		// Build HTTP headers from client and context metadata.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

			buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "ListOperations")
			if err != nil {
				return err
			}
			if err := unm.Unmarshal(buf, resp); err != nil {
				return err
			}

			return nil
		}, opts...)
		if e != nil {
			return nil, "", e
		}
		it.Response = resp
		return resp.GetOperations(), resp.GetNextPageToken(), nil
	}

	fetch := func(pageSize int, pageToken string) (string, error) {
		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, items...)
		return nextPageToken, nil
	}

	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}
