using System.Reflection;
using System.Xml.Serialization;
using ProtoBuf;
using Sandbox.Graphics.GUI;
using VRage.Game;
using VRage.GameServices;

namespace PluginLoader.Data;

[ProtoContract]
public class ModPlugin : PluginData, ISteamItem
{
    private bool isLegacy;

    private string modLocation;

    public override string Source => "Mod";

    [ProtoMember(1)]
    [XmlArray]
    [XmlArrayItem("Id")]
    public ulong[] DependencyIds { get; set; } = new ulong[0];

    [XmlIgnore] public ModPlugin[] Dependencies { get; set; } = new ModPlugin[0];

    public string ModLocation
    {
        get
        {
            if (modLocation != null)
                return modLocation;
            modLocation = Path.Combine(Path.GetFullPath(@"..\..\..\workshop\content\244850\"), WorkshopId.ToString());
            if (Directory.Exists(modLocation) && !Directory.Exists(Path.Combine(modLocation, "Data")))
            {
                var legacyFile = Directory.EnumerateFiles(modLocation, "*_legacy.bin").FirstOrDefault();
                if (legacyFile != null)
                {
                    isLegacy = true;
                    modLocation = legacyFile;
                }
            }

            return modLocation;
        }
    }

    public bool Exists => Directory.Exists(ModLocation) || (isLegacy && File.Exists(modLocation));

    [XmlIgnore] public ulong WorkshopId { get; private set; }

    public override string Id
    {
        get => base.Id;
        set
        {
            base.Id = value;
            WorkshopId = ulong.Parse(Id);
        }
    }

    public override Assembly GetAssembly()
    {
        return null;
    }

    public override bool TryLoadAssembly(out Assembly a)
    {
        a = null;
        return false;
    }

    public override void Show()
    {
        MyGuiSandbox.OpenUrl("https://steamcommunity.com/workshop/filedetails/?id=" + Id,
                             UrlOpenMode.SteamOrExternalWithConfirm);
    }

    public MyObjectBuilder_Checkpoint.ModItem GetModItem()
    {
        var modItem = new MyObjectBuilder_Checkpoint.ModItem(WorkshopId, "Steam");
        modItem.SetModData(new WorkshopItem(ModLocation));
        return modItem;
    }

    public MyModContext GetModContext()
    {
        var modContext = new MyModContext();
        modContext.Init(GetModItem());
        modContext.Init(WorkshopId.ToString(), null, ModLocation);
        return modContext;
    }

    private class WorkshopItem : MyWorkshopItem
    {
        public WorkshopItem(string folder)
        {
            Folder = folder;
        }
    }
}