using System;
using System.Runtime.InteropServices;

namespace DiscordRpcDemo
{
    public class DiscordRpc
    {
        public DiscordRpc()
        {
        }

        [DllImport("discord-rpc-w32.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.None, EntryPoint = "Discord_Initialize", ExactSpelling = false)]
        public static extern void Initialize(string applicationId, ref DiscordRpc.EventHandlers handlers, bool autoRegister, string optionalSteamId);

        [DllImport("discord-rpc-w32.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.None, EntryPoint = "Discord_RunCallbacks", ExactSpelling = false)]
        public static extern void RunCallbacks();

        [DllImport("discord-rpc-w32.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.None, EntryPoint = "Discord_Shutdown", ExactSpelling = false)]
        public static extern void Shutdown();

        [DllImport("discord-rpc-w32.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.None, EntryPoint = "Discord_UpdatePresence", ExactSpelling = false)]
        public static extern void UpdatePresence(ref DiscordRpc.RichPresence presence);

        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void DisconnectedCallback(int errorCode, string message);

        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void ErrorCallback(int errorCode, string message);

        public struct EventHandlers
        {
            public DiscordRpc.ReadyCallback readyCallback;

            public DiscordRpc.DisconnectedCallback disconnectedCallback;

            public DiscordRpc.ErrorCallback errorCallback;
        }

        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate void ReadyCallback();

        [Serializable]
        public struct RichPresence
        {

            public string state;

            public string details;

            public long startTimestamp;

            public long endTimestamp;

            public string largeImageKey;

            public string largeImageText;

            public string smallImageKey;

            public string smallImageText;

            public string partyId;

            public int partySize;

            public int partyMax;

            public string matchSecret;

            public string joinSecret;

            public string spectateSecret;

            public bool instance;

        }
    }
}