// Copyright 2022 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 dataplex

import (
	"context"
	"fmt"
	"math"
	"net/url"

	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"
	dataplexpb "google.golang.org/genproto/googleapis/cloud/dataplex/v1"
	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/proto"
)

var newContentClientHook clientHook

// ContentCallOptions contains the retry settings for each method of ContentClient.
type ContentCallOptions struct {
	CreateContent []gax.CallOption
	UpdateContent []gax.CallOption
	DeleteContent []gax.CallOption
	GetContent    []gax.CallOption
	ListContent   []gax.CallOption
}

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

func defaultContentCallOptions() *ContentCallOptions {
	return &ContentCallOptions{
		CreateContent: []gax.CallOption{},
		UpdateContent: []gax.CallOption{},
		DeleteContent: []gax.CallOption{},
		GetContent:    []gax.CallOption{},
		ListContent:   []gax.CallOption{},
	}
}

// internalContentClient is an interface that defines the methods availaible from Cloud Dataplex API.
type internalContentClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	CreateContent(context.Context, *dataplexpb.CreateContentRequest, ...gax.CallOption) (*dataplexpb.Content, error)
	UpdateContent(context.Context, *dataplexpb.UpdateContentRequest, ...gax.CallOption) (*dataplexpb.Content, error)
	DeleteContent(context.Context, *dataplexpb.DeleteContentRequest, ...gax.CallOption) error
	GetContent(context.Context, *dataplexpb.GetContentRequest, ...gax.CallOption) (*dataplexpb.Content, error)
	ListContent(context.Context, *dataplexpb.ListContentRequest, ...gax.CallOption) *ContentIterator
}

// ContentClient is a client for interacting with Cloud Dataplex API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// ContentService manages Notebook and SQL Scripts for Dataplex.
type ContentClient struct {
	// The internal transport-dependent client.
	internalClient internalContentClient

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

// 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 *ContentClient) 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 *ContentClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *ContentClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// CreateContent create a content.
func (c *ContentClient) CreateContent(ctx context.Context, req *dataplexpb.CreateContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	return c.internalClient.CreateContent(ctx, req, opts...)
}

// UpdateContent update a content. Only supports full resource update.
func (c *ContentClient) UpdateContent(ctx context.Context, req *dataplexpb.UpdateContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	return c.internalClient.UpdateContent(ctx, req, opts...)
}

// DeleteContent delete a content.
func (c *ContentClient) DeleteContent(ctx context.Context, req *dataplexpb.DeleteContentRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteContent(ctx, req, opts...)
}

// GetContent get a content resource.
func (c *ContentClient) GetContent(ctx context.Context, req *dataplexpb.GetContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	return c.internalClient.GetContent(ctx, req, opts...)
}

// ListContent list content.
func (c *ContentClient) ListContent(ctx context.Context, req *dataplexpb.ListContentRequest, opts ...gax.CallOption) *ContentIterator {
	return c.internalClient.ListContent(ctx, req, opts...)
}

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

	// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
	disableDeadlines bool

	// Points back to the CallOptions field of the containing ContentClient
	CallOptions **ContentCallOptions

	// The gRPC API client.
	contentClient dataplexpb.ContentServiceClient

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
}

// NewContentClient creates a new content service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// ContentService manages Notebook and SQL Scripts for Dataplex.
func NewContentClient(ctx context.Context, opts ...option.ClientOption) (*ContentClient, error) {
	clientOpts := defaultContentGRPCClientOptions()
	if newContentClientHook != nil {
		hookOpts, err := newContentClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	disableDeadlines, err := checkDisableDeadlines()
	if err != nil {
		return nil, err
	}

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

	c := &contentGRPCClient{
		connPool:         connPool,
		disableDeadlines: disableDeadlines,
		contentClient:    dataplexpb.NewContentServiceClient(connPool),
		CallOptions:      &client.CallOptions,
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *contentGRPCClient) 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 *contentGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("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 *contentGRPCClient) Close() error {
	return c.connPool.Close()
}

func (c *contentGRPCClient) CreateContent(ctx context.Context, req *dataplexpb.CreateContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).CreateContent[0:len((*c.CallOptions).CreateContent):len((*c.CallOptions).CreateContent)], opts...)
	var resp *dataplexpb.Content
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.contentClient.CreateContent(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *contentGRPCClient) UpdateContent(ctx context.Context, req *dataplexpb.UpdateContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "content.name", url.QueryEscape(req.GetContent().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateContent[0:len((*c.CallOptions).UpdateContent):len((*c.CallOptions).UpdateContent)], opts...)
	var resp *dataplexpb.Content
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.contentClient.UpdateContent(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *contentGRPCClient) DeleteContent(ctx context.Context, req *dataplexpb.DeleteContentRequest, opts ...gax.CallOption) error {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).DeleteContent[0:len((*c.CallOptions).DeleteContent):len((*c.CallOptions).DeleteContent)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.contentClient.DeleteContent(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *contentGRPCClient) GetContent(ctx context.Context, req *dataplexpb.GetContentRequest, opts ...gax.CallOption) (*dataplexpb.Content, error) {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).GetContent[0:len((*c.CallOptions).GetContent):len((*c.CallOptions).GetContent)], opts...)
	var resp *dataplexpb.Content
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.contentClient.GetContent(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *contentGRPCClient) ListContent(ctx context.Context, req *dataplexpb.ListContentRequest, opts ...gax.CallOption) *ContentIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).ListContent[0:len((*c.CallOptions).ListContent):len((*c.CallOptions).ListContent)], opts...)
	it := &ContentIterator{}
	req = proto.Clone(req).(*dataplexpb.ListContentRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*dataplexpb.Content, string, error) {
		resp := &dataplexpb.ListContentResponse{}
		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 = c.contentClient.ListContent(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetContent(), 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
}

// ContentIterator manages a stream of *dataplexpb.Content.
type ContentIterator struct {
	items    []*dataplexpb.Content
	pageInfo *iterator.PageInfo
	nextFunc func() error

	// Response is the raw response for the current page.
	// It must be cast to the RPC response type.
	// Calling Next() or InternalFetch() updates this value.
	Response interface{}

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*dataplexpb.Content, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *ContentIterator) PageInfo() *iterator.PageInfo {
	return it.pageInfo
}

// Next returns the next result. Its second return value is iterator.Done if there are no more
// results. Once Next returns Done, all subsequent calls will return Done.
func (it *ContentIterator) Next() (*dataplexpb.Content, error) {
	var item *dataplexpb.Content
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *ContentIterator) bufLen() int {
	return len(it.items)
}

func (it *ContentIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}