using System.IO;

namespace FrostFS.SDK.Client;

public readonly struct PrmObjectClientCutPut(
    FrostFsObjectHeader? header,
    Stream? payload,
    int bufferMaxSize = 0,
    FrostFsSessionToken? sessionToken = null,
    byte[]? customBuffer = null,
    string[]? xheaders = null,
    UploadProgressInfo? progress = null) : PrmObjectPutBase, System.IEquatable<PrmObjectClientCutPut>
{
    /// <summary>
    /// Need to provide values like <c>ContainerId</c> and <c>ObjectType</c> to create and object.
    /// Optional parameters ike <c>Attributes</c> can be provided as well.
    /// </summary>
    /// <value>Header with required parameters to create an object</value>
    public FrostFsObjectHeader? Header { get; } = header;

    /// <summary>
    /// A stream with source data
    /// </summary>
    public Stream? Payload { get; } = payload;

    /// <summary>
    /// Overrides default size of the buffer for stream transferring.
    /// </summary>
    /// <value>Size of the buffer</value>
    public int BufferMaxSize { get; } = bufferMaxSize;

    /// <summary>
    /// Allows to define a buffer for chunks to manage by the memory allocation and releasing.
    /// </summary>
    public byte[]? CustomBuffer { get; } = customBuffer;

    /// <inheritdoc />
    public FrostFsSessionToken? SessionToken { get; } = sessionToken;

    /// <summary>
    /// FrostFS request X-Headers
    /// </summary>
    public string[] XHeaders { get; } = xheaders ?? [];

    public UploadProgressInfo? Progress { get; } = progress;

    internal PutObjectContext PutObjectContext { get; } = new();

    public override readonly bool Equals(object obj)
    {
        if (obj == null || obj is not PrmObjectClientCutPut)
            return false;

        return Equals((PrmObjectClientCutPut)obj);
    }

    public readonly bool Equals(PrmObjectClientCutPut other)
    {
        return GetHashCode() == other.GetHashCode();
    }

    public override readonly int GetHashCode()
    {
        return BufferMaxSize
            ^ (Header == null ? 0 : Header.GetHashCode())
            ^ (Payload == null ? 0 : Payload.GetHashCode())
            ^ (CustomBuffer == null ? 0 : CustomBuffer.GetHashCode())
            ^ (SessionToken == null ? 0 : SessionToken.GetHashCode())
            ^ XHeaders.GetHashCode();
    }

    public static bool operator ==(PrmObjectClientCutPut left, PrmObjectClientCutPut right)
    {
        return left.Equals(right);
    }

    public static bool operator !=(PrmObjectClientCutPut left, PrmObjectClientCutPut right)
    {
        return !(left == right);
    }
}