using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using Microsoft.Practices.ServiceLocation;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Common;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Services;

namespace Taloyhtio.GeneralSSO.Server.CodeFiles.Entities
{
    public class Client : PersistentObject<int>, IClientDescription
    {
        public virtual string ClientIdentifier { get; set; }
        public virtual string ClientSecret { get; set; }
        public virtual string Callback { get; set; }
        public virtual string Name { get; set; }
        public virtual ClientType ClientType { get; set; }
        public virtual IList<ClientAuthorization> ClientAuthorizations { get; set; }

        public virtual bool IsCallbackAllowed(Uri callback)
        {
            try
            {
                if (callback == null)
                {
                    return false;
                }

                if (string.IsNullOrEmpty(this.Callback))
                {
                    return false;
                }

                var uri = new Uri(this.Callback);
                return (string.Compare(callback.GetLeftPart(UriPartial.Authority),
                    uri.GetLeftPart(UriPartial.Authority), true) == 0);
            }
            catch (Exception x)
            {
                ServiceLocator.Current.GetInstance<ILogger>().Error(Constants.LogComponents.CLIENT_ENTITY, x);
                return false;
            }
        }

        public virtual bool IsValidClientSecret(string secret)
        {
            return MessagingUtilities.EqualsConstantTime(secret, this.ClientSecret);
        }

        public virtual Uri DefaultCallback
        {
            get { return new Uri(this.Callback); }
        }

        public virtual bool HasNonEmptySecret
        {
            get { return !string.IsNullOrEmpty(this.ClientSecret); }
        }
    }
}