using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reactive;
using System.Reactive.Linq;
using System.Reactive.Subjects;
using System.Reactive.Threading.Tasks;
using System.Text;
using System.Threading;
using InfluxDB.Client.Api.Domain;
using InfluxDB.Client.Api.Service;
using InfluxDB.Client.Core;
using InfluxDB.Client.Core.Exceptions;
using InfluxDB.Client.Core.Internal;
using InfluxDB.Client.Internal;
using InfluxDB.Client.Writes;
using Microsoft.Extensions.ObjectPool;
using RestSharp;

namespace InfluxDB.Client
{
    public interface IWriteApi : IDisposable
    {
        /// <summary>
        /// Write Line Protocol record into specified bucket.
        /// </summary>
        /// <param name="record">
        ///     specifies the record in InfluxDB Line Protocol.
        ///     The <see cref="record" /> is considered as one batch unit.
        /// </param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WriteRecord(string record, WritePrecision precision = WritePrecision.Ns, string bucket = null,
            string org = null);

        /// <summary>
        /// Write Line Protocol records into specified bucket.
        /// </summary>
        /// <param name="records">specifies the record in InfluxDB Line Protocol</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WriteRecords(List<string> records, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null);

        /// <summary>
        /// Write Line Protocol records into specified bucket.
        /// </summary>
        /// <param name="records">specifies the record in InfluxDB Line Protocol</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WriteRecords(string[] records, WritePrecision precision = WritePrecision.Ns, string bucket = null,
            string org = null);

        /// <summary>
        /// Write a Data point into specified bucket.
        /// </summary>
        /// <param name="point">specifies the Data point to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WritePoint(PointData point, string bucket = null, string org = null);

        /// <summary>
        /// Write Data points into specified bucket.
        /// </summary>
        /// <param name="points">specifies the Data points to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WritePoints(List<PointData> points, string bucket = null, string org = null);

        /// <summary>
        /// Write Data points into specified bucket.
        /// </summary>
        /// <param name="points">specifies the Data points to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        void WritePoints(PointData[] points, string bucket = null, string org = null);

        /// <summary>
        /// Write a Measurement into specified bucket.
        /// </summary>
        /// <param name="measurement">specifies the Measurement to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        void WriteMeasurement<TM>(TM measurement, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null);

        /// <summary>
        /// Write Measurements into specified bucket.
        /// </summary>
        /// <param name="measurements">specifies Measurements to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        void WriteMeasurements<TM>(List<TM> measurements, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null);

        /// <summary>
        /// Write Measurements into specified bucket.
        /// </summary>
        /// <param name="measurements">specifies Measurements to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        void WriteMeasurements<TM>(TM[] measurements, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null);

        /// <summary>
        /// Forces the client to flush all pending writes from the buffer to the InfluxDB via HTTP.
        /// </summary>
        void Flush();
    }

    public class WriteApi : IWriteApi
    {
        private readonly Subject<IObservable<BatchWriteData>> _flush = new Subject<IObservable<BatchWriteData>>();

        private readonly InfluxDBClient _influxDbClient;
        private readonly IDomainObjectMapper _mapper;
        private readonly InfluxDBClientOptions _options;
        private readonly Subject<BatchWriteData> _subject = new Subject<BatchWriteData>();
        private static readonly ObjectPoolProvider ObjectPoolProvider = new DefaultObjectPoolProvider();

        private static readonly ObjectPool<StringBuilder> StringBuilderPool =
            ObjectPoolProvider.CreateStringBuilderPool();

        private readonly IDisposable _unsubscribeDisposeCommand;


        private bool _disposed;

        protected internal WriteApi(
            InfluxDBClientOptions options,
            WriteService service,
            WriteOptions writeOptions,
            IDomainObjectMapper mapper,
            InfluxDBClient influxDbClient,
            IObservable<Unit> disposeCommand)
        {
            Arguments.CheckNotNull(service, nameof(service));
            Arguments.CheckNotNull(writeOptions, nameof(writeOptions));
            Arguments.CheckNotNull(mapper, nameof(mapper));
            Arguments.CheckNotNull(influxDbClient, nameof(_influxDbClient));
            Arguments.CheckNotNull(disposeCommand, nameof(disposeCommand));

            _options = options;
            _mapper = mapper;
            _influxDbClient = influxDbClient;

            _unsubscribeDisposeCommand = disposeCommand.Subscribe(_ => Dispose());

            // backpreasure - is not implemented in C#
            // 
            // => use unbound buffer
            // 
            // https://github.com/dotnet/reactive/issues/19


            var batches = _subject
                //
                // Batching
                //
                .Publish(connectedSource =>
                {
                    var trigger = Observable.Merge(
                        // triggered by time & count
                        connectedSource.Window(TimeSpan.FromMilliseconds(
                                writeOptions.FlushInterval),
                            writeOptions.BatchSize,
                            writeOptions.WriteScheduler),
                        // flush trigger
                        _flush
                    );
                    return connectedSource
                        .Window(trigger);
                })
                //
                // Group by key - same bucket, same org
                //
                .SelectMany(it => it.GroupBy(batchWrite => batchWrite.Options))
                //
                // Create Write Point = bucket, org, ... + data
                //
                .SelectMany(grouped =>
                {
                    var aggregate = grouped
                        .Aggregate(StringBuilderPool.Get(), (builder, batchWrite) =>
                        {
                            var data = batchWrite.ToLineProtocol();

                            if (string.IsNullOrEmpty(data))
                            {
                                return builder;
                            }

                            if (builder.Length > 0)
                            {
                                builder.Append("\n");
                            }

                            return builder.Append(data);
                        }).Select(builder =>
                        {
                            var result = builder.ToString();
                            builder.Clear();
                            StringBuilderPool.Return(builder);
                            return result;
                        });

                    return aggregate.Select(records => new BatchWriteRecord(grouped.Key, records))
                        .Where(batchWriteItem => !string.IsNullOrEmpty(batchWriteItem.ToLineProtocol()));
                });

            var unused = batches
                //
                // Map to Async request
                //
                .Select(batchWriteItem =>
                {
                    var org = batchWriteItem.Options.OrganizationId;
                    var bucket = batchWriteItem.Options.Bucket;
                    var lineProtocol = batchWriteItem.ToLineProtocol();
                    var precision = batchWriteItem.Options.Precision;

                    return Observable
                        .Defer(() =>
                        {
                            var observable = service.PostWriteAsyncWithIRestResponse(org, bucket,
                                    Encoding.UTF8.GetBytes(lineProtocol), null,
                                    "identity", "text/plain; charset=utf-8", null, "application/json", null, precision)
                                .ToObservable();

                            if (writeOptions.JitterInterval > 0)
                            {
                                observable = observable
                                    .Delay(_ => Observable.Timer(
                                        TimeSpan.FromMilliseconds(RetryAttempt.JitterDelay(writeOptions)),
                                        writeOptions.WriteScheduler));
                            }

                            return observable;
                        })
                        .RetryWhen(f => f
                            .Zip(Observable.Range(1, writeOptions.MaxRetries + 1), (exception, count)
                                => new RetryAttempt(exception, count, writeOptions))
                            .SelectMany(attempt =>
                            {
                                if (attempt.IsRetry())
                                {
                                    var retryInterval = attempt.GetRetryInterval();

                                    var retryable = new WriteRetriableErrorEvent(org, bucket, precision, lineProtocol,
                                        attempt.Error, retryInterval);

                                    Publish(retryable);

                                    return Observable.Timer(TimeSpan.FromMilliseconds(retryInterval),
                                        writeOptions.WriteScheduler);
                                }

                                throw attempt.Error;
                            }))
                        .Select(result =>
                        {
                            // ReSharper disable once ConvertIfStatementToReturnStatement
                            if (result.IsSuccessful)
                            {
                                return Notification.CreateOnNext(result);
                            }

                            return Notification.CreateOnError<RestResponse>(
                                HttpException.Create(result, result.Content));
                        })
                        .Catch<Notification<RestResponse>, Exception>(ex =>
                        {
                            var error = new WriteErrorEvent(org, bucket, precision, lineProtocol, ex);
                            Publish(error);

                            return Observable.Return(Notification.CreateOnError<RestResponse>(ex));
                        }).Do(res =>
                        {
                            if (res.Kind == NotificationKind.OnNext)
                            {
                                var success = new WriteSuccessEvent(org, bucket, precision, lineProtocol);
                                Publish(success);
                            }
                        });
                })
                .Concat()
                .Subscribe(
                    notification =>
                    {
                        switch (notification.Kind)
                        {
                            case NotificationKind.OnNext:
                                Trace.WriteLine($"The batch item: {notification} was processed successfully.");
                                break;
                            case NotificationKind.OnError:
                                Trace.WriteLine(
                                    $"The batch item wasn't processed successfully because: {notification.Exception}");
                                break;
                            default:
                                Trace.WriteLine($"The batch item: {notification} was processed");
                                break;
                        }
                    },
                    exception =>
                    {
                        Publish(new WriteRuntimeExceptionEvent(exception));
                        _disposed = true;
                        Trace.WriteLine($"The unhandled exception occurs: {exception}");
                    },
                    () =>
                    {
                        _disposed = true;
                        Trace.WriteLine("The WriteApi was disposed.");
                    });
        }

        public void Dispose()
        {
            ReleaseAndClose();
        }

        /// <summary>
        /// Release all resources and flush remaining data into database.
        /// </summary>
        /// <param name="millis">How much milliseconds wait to flush data.</param>
        internal void ReleaseAndClose(int millis = 30000)
        {
            _unsubscribeDisposeCommand.Dispose(); // avoid duplicate call to dispose

            Trace.WriteLine("Flushing batches before shutdown.");

            if (!_subject.IsDisposed)
            {
                _subject.OnCompleted();
            }

            if (!_flush.IsDisposed)
            {
                _flush.OnCompleted();
            }

            _subject.Dispose();
            _flush.Dispose();

            WaitToCondition(() => _disposed, millis);
        }

        public bool Disposed => _disposed;

        public event EventHandler EventHandler;

        /// <summary>
        /// Write Line Protocol record into specified bucket.
        /// </summary>
        /// <param name="record">
        ///     specifies the record in InfluxDB Line Protocol.
        ///     The <see cref="record" /> is considered as one batch unit.
        /// </param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WriteRecord(string record, WritePrecision precision = WritePrecision.Ns, string bucket = null,
            string org = null)
        {
            var options = new BatchWriteOptions(bucket ?? _options.Bucket, org ?? _options.Org, precision);
            _subject.OnNext(new BatchWriteRecord(options, record));
        }

        /// <summary>
        /// Write Line Protocol records into specified bucket.
        /// </summary>
        /// <param name="records">specifies the record in InfluxDB Line Protocol</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WriteRecords(List<string> records, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null)
        {
            records.ForEach(record => WriteRecord(record, precision, bucket, org));
        }

        /// <summary>
        /// Write Line Protocol records into specified bucket.
        /// </summary>
        /// <param name="records">specifies the record in InfluxDB Line Protocol</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WriteRecords(string[] records, WritePrecision precision = WritePrecision.Ns, string bucket = null,
            string org = null)
        {
            foreach (var record in records) WriteRecord(record, precision, bucket, org);
        }

        /// <summary>
        /// Write a Data point into specified bucket.
        /// </summary>
        /// <param name="point">specifies the Data point to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WritePoint(PointData point, string bucket = null, string org = null)
        {
            if (point == null)
            {
                return;
            }

            var options = new BatchWriteOptions(bucket ?? _options.Bucket, org ?? _options.Org, point.Precision);
            _subject.OnNext(new BatchWritePoint(options, _options, point));
        }

        /// <summary>
        /// Write Data points into specified bucket.
        /// </summary>
        /// <param name="points">specifies the Data points to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WritePoints(List<PointData> points, string bucket = null, string org = null)
        {
            foreach (var point in points) WritePoint(point, bucket, org);
        }

        /// <summary>
        /// Write Data points into specified bucket.
        /// </summary>
        /// <param name="points">specifies the Data points to write into bucket</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        public void WritePoints(PointData[] points, string bucket = null, string org = null)
        {
            WritePoints(points.ToList(), bucket, org);
        }

        /// <summary>
        /// Write a Measurement into specified bucket.
        /// </summary>
        /// <param name="measurement">specifies the Measurement to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        public void WriteMeasurement<TM>(TM measurement, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null)
        {
            if (measurement == null)
            {
                return;
            }

            var options = new BatchWriteOptions(bucket ?? _options.Bucket, org ?? _options.Org, precision);

            _subject.OnNext(new BatchWriteMeasurement<TM>(options, _options, measurement, _mapper));
        }

        /// <summary>
        /// Write Measurements into specified bucket.
        /// </summary>
        /// <param name="measurements">specifies Measurements to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        public void WriteMeasurements<TM>(List<TM> measurements, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null)
        {
            foreach (var measurement in measurements) WriteMeasurement(measurement, precision, bucket, org);
        }

        /// <summary>
        /// Write Measurements into specified bucket.
        /// </summary>
        /// <param name="measurements">specifies Measurements to write into bucket</param>
        /// <param name="precision">specifies the precision for the unix timestamps within the body line-protocol; default Nanoseconds</param>
        /// <param name="bucket">specifies the destination bucket for writes. If the bucket is not specified then is used config from <see cref="InfluxDBClientOptions.Bucket" />.</param>
        /// <param name="org">specifies the destination organization for writes. If the org is not specified then is used config from <see cref="InfluxDBClientOptions.Org" />.</param>
        /// <typeparam name="TM">measurement type</typeparam>
        public void WriteMeasurements<TM>(TM[] measurements, WritePrecision precision = WritePrecision.Ns,
            string bucket = null, string org = null)
        {
            WriteMeasurements(measurements.ToList(), precision, bucket, org);
        }

        /// <summary>
        /// Forces the client to flush all pending writes from the buffer to the InfluxDB via HTTP.
        /// </summary>
        public void Flush()
        {
            if (!_flush.IsDisposed)
            {
                _flush.OnNext(Observable.Empty<BatchWriteData>());
            }
        }

        internal static void WaitToCondition(Func<bool> condition, int millis)
        {
            var start = DateTimeOffset.Now.ToUnixTimeMilliseconds();
            while (!condition())
            {
                Thread.Sleep(25);
                if (DateTimeOffset.Now.ToUnixTimeMilliseconds() - start > millis)
                {
                    Trace.TraceError($"The WriteApi can't be gracefully dispose! - {millis}ms elapsed.");
                    break;
                }
            }
        }

        private void Publish(InfluxDBEventArgs eventArgs)
        {
            eventArgs.LogEvent();

            EventHandler?.Invoke(this, eventArgs);
        }
    }

    internal abstract class BatchWriteData
    {
        internal readonly BatchWriteOptions Options;

        protected BatchWriteData(BatchWriteOptions options)
        {
            Arguments.CheckNotNull(options, "options");

            Options = options;
        }

        internal abstract string ToLineProtocol();
    }

    internal class BatchWriteRecord : BatchWriteData
    {
        private readonly string _record;

        internal BatchWriteRecord(BatchWriteOptions options, string record) : base(options)
        {
            Arguments.CheckNotNull(record, nameof(record));

            _record = record;
        }

        internal override string ToLineProtocol()
        {
            return _record;
        }
    }

    internal class BatchWritePoint : BatchWriteData
    {
        private readonly PointData _point;
        private readonly InfluxDBClientOptions _clientOptions;

        internal BatchWritePoint(BatchWriteOptions options, InfluxDBClientOptions clientOptions, PointData point) :
            base(options)
        {
            Arguments.CheckNotNull(point, nameof(point));

            _point = point;
            _clientOptions = clientOptions;
        }

        internal override string ToLineProtocol()
        {
            if (!_point.HasFields())
            {
                Trace.WriteLine($"The point: ${_point} doesn't contains any fields, skipping");

                return null;
            }

            return _point.ToLineProtocol(_clientOptions.PointSettings);
        }
    }

    internal class BatchWriteMeasurement<TM> : BatchWriteData
    {
        private readonly TM _measurement;
        private readonly IDomainObjectMapper _converter;
        private readonly InfluxDBClientOptions _clientOptions;

        internal BatchWriteMeasurement(BatchWriteOptions options, InfluxDBClientOptions clientOptions, TM measurement,
            IDomainObjectMapper converter) :
            base(options)
        {
            Arguments.CheckNotNull(measurement, nameof(measurement));

            _clientOptions = clientOptions;
            _measurement = measurement;
            _converter = converter;
        }

        internal override string ToLineProtocol()
        {
            var point = _converter.ConvertToPointData(_measurement, Options.Precision);
            if (!point.HasFields())
            {
                Trace.WriteLine($"The point: ${point} doesn't contains any fields, skipping");

                return null;
            }

            return point.ToLineProtocol(_clientOptions.PointSettings);
        }
    }

    internal class BatchWriteOptions
    {
        internal readonly string Bucket;
        internal readonly string OrganizationId;
        internal readonly WritePrecision Precision;

        internal BatchWriteOptions(string bucket, string org, WritePrecision precision)
        {
            Arguments.CheckNonEmptyString(bucket, AbstractRestClient.BucketArgumentValidation);
            Arguments.CheckNonEmptyString(org, AbstractRestClient.OrgArgumentValidation);
            Arguments.CheckNotNull(precision, nameof(precision));

            Bucket = bucket;
            OrganizationId = org;
            Precision = precision;
        }

        public override bool Equals(object obj)
        {
            if (ReferenceEquals(null, obj))
            {
                return false;
            }

            if (ReferenceEquals(this, obj))
            {
                return true;
            }

            if (obj.GetType() != GetType())
            {
                return false;
            }

            return Equals((BatchWriteOptions)obj);
        }

        public override int GetHashCode()
        {
            unchecked
            {
                var hashCode = Bucket != null ? Bucket.GetHashCode() : 0;
                hashCode = (hashCode * 397) ^ (OrganizationId != null ? OrganizationId.GetHashCode() : 0);
                hashCode = (hashCode * 397) ^ (int)Precision;
                return hashCode;
            }
        }

        private bool Equals(BatchWriteOptions other)
        {
            return string.Equals(Bucket, other.Bucket) && string.Equals(OrganizationId, other.OrganizationId) &&
                   Precision == other.Precision;
        }
    }
}