using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Luski.Shared.PublicServers.V1.Enums;
using Luski.Shared.PublicServers.V1.Shared;

namespace Luski.net.Structures.Public;

public class SocketAppUser : SocketUser
{
    public long SelectedChannel { get; init; } = default!;

    private List<ServerProfile>? _serverProfiles;
    
    public async Task<SocketChannel> GetSelectedChannel(CancellationToken Token)
    {
        return await Server.GetChannel<SocketChannel>(SelectedChannel, Token);
    }
    
    public async Task<ServerProfile[]> GetProfiles(CancellationToken Token)
    {
        if (_serverProfiles is null)
        {
            _serverProfiles = (await Server.GetMyProfiles(Token)).ToList();
        }
        return _serverProfiles.ToArray();
    }
    
    public async Task<bool> HasAccessToCategory(SocketCategory Category, ServerPermission RequiredPerms = ServerPermission.ViewThis)
    {
        if (Category.Server != Server) return false;
        if (Server.OwnerID == Id) return true;
        Role[] UserRoleIDList = await GetRoles();
        RequiredPerms |= ServerPermission.ViewThis;
        
        ServerPermission GoodPerms = ServerPermission.None;
        
        UserOverride[] CatUserOverides = await Category.GetUserOverrides();
        foreach (UserOverride CatUserOveride in CatUserOverides)
        {
            if (CatUserOveride.UserID != Id) continue;
            if ((CatUserOveride.BadPermissions & RequiredPerms) > ServerPermission.None) return false;
            if ((CatUserOveride.GoodPermissions & RequiredPerms) == RequiredPerms) return true;
            
            GoodPerms |= CatUserOveride.GoodPermissions;
            break;
        }
        
        RoleOverride[] CatRoleOverides = await Category.GetRoleOverrides();
        int bad_index = -1;
        int good_index = -1;
        
        foreach (RoleOverride CatRoleOveride in CatRoleOverides)
        {
            if (!RoleIds.Contains(CatRoleOveride.ParentRoleID)) continue;
            var index = (await CatRoleOveride.GetRole()).Index;
            if ((CatRoleOveride.BadPermissions & RequiredPerms) > ServerPermission.None)
            {
                if (bad_index < index)
                    bad_index = index;
            }
            else good_index = index;
            
            GoodPerms |= CatRoleOveride.GoodPermissions;
        }
        
        if (bad_index > good_index) return false;
        
        foreach (Role RoleID in UserRoleIDList)
        {
            GoodPerms |= RoleID.ServerPermissions;
        }
        return GoodPerms.HasPermission(RequiredPerms);
    }
    
    public string Username { get; internal set; } = default!;
}