using System;
using System.Runtime.InteropServices;

namespace Raylib_cs;

/// <summary>
/// Wave type, defines audio wave data
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public unsafe partial struct Wave
{
    /// <summary>
    /// Number of samples
    /// </summary>
    public uint SampleCount;

    /// <summary>
    /// Frequency (samples per second)
    /// </summary>
    public uint SampleRate;

    /// <summary>
    /// Bit depth (bits per sample): 8, 16, 32 (24 not supported)
    /// </summary>
    public uint SampleSize;

    /// <summary>
    /// Number of channels (1-mono, 2-stereo)
    /// </summary>
    public uint Channels;

    //TODO: SPAN<byte>  ?
    /// <summary>
    /// Buffer data pointer
    /// </summary>
    public void* Data;
}

/// <summary>
/// Audio stream type<br/>
/// NOTE: Useful to create custom audio streams not bound to a specific file
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public partial struct AudioStream
{
    //TODO: convert
    /// <summary>
    /// Pointer to internal data(rAudioBuffer *) used by the audio system
    /// </summary>
    public IntPtr Buffer;

    /// <summary>
    /// Pointer to internal data processor, useful for audio effects
    /// </summary>
    public IntPtr Processor;

    /// <summary>
    /// Frequency (samples per second)
    /// </summary>
    public uint SampleRate;

    /// <summary>
    /// Bit depth (bits per sample): 8, 16, 32 (24 not supported)
    /// </summary>
    public uint SampleSize;

    /// <summary>
    /// Number of channels (1-mono, 2-stereo)
    /// </summary>
    public uint Channels;
}

/// <summary>
/// Sound source type
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public partial struct Sound
{
    /// <summary>
    /// Audio stream
    /// </summary>
    public AudioStream Stream;

    /// <summary>
    /// Total number of frames (considering channels)
    /// </summary>
    public uint FrameCount;
}

/// <summary>
/// Music stream type (audio file streaming from memory)<br/>
/// NOTE: Anything longer than ~10 seconds should be streamed
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public unsafe partial struct Music
{
    /// <summary>
    /// Audio stream
    /// </summary>
    public AudioStream Stream;

    /// <summary>
    /// Total number of samples
    /// </summary>
    public uint FrameCount;

    /// <summary>
    /// Music looping enable
    /// </summary>
    public CBool Looping;

    /// <summary>
    /// Type of music context (audio filetype)
    /// </summary>
    public int CtxType;

    //TODO span
    /// <summary>
    /// Audio context data, depends on type
    /// </summary>
    public void* CtxData;
}