using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Net;
using System.Threading;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using DotNetOpenAuth.OAuth2.Messages;
using Microsoft.Practices.ServiceLocation;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Common;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Entities;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Infrastructure.OAuth;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Models;
using Taloyhtio.GeneralSSO.Server.CodeFiles.Repositories;

namespace Taloyhtio.GeneralSSO.Server.Clients
{
    public partial class Details : LayoutsPageBase
    {
        private IClientRepository clientRepository;

        protected override bool AllowAnonymousAccess
        {
            get
            {
                return false;
            }
        }

        protected override bool RequireSiteAdministrator
        {
            get
            {
                return true;
            }
        }

        protected bool IsEditMode
        {
            get
            {
                return !string.IsNullOrEmpty(this.hdnId.Value);
            }
        }

        public Details()
        {
            this.clientRepository = ServiceLocator.Current.GetInstance<IClientRepository>();
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                string idStr = this.Request.QueryString["Id"];
                if (string.IsNullOrEmpty(idStr))
                {
                    return;
                }

                this.lnkDeleteConfirm.Visible = true;

                int id = int.Parse(idStr);
                var client = this.clientRepository.GetById(id);
                if (client == null)
                {
                    throw new Exception(string.Format("Client with id '{0}' not found", id));
                }
                this.bind(client);
            }
        }

        private void bind(Client c)
        {
            if (c == null)
            {
                throw new Exception("Client is null");
            }
            this.txtName.Text = c.Name;
            this.txtClientId.Text = c.ClientIdentifier;
            this.txtClientSecret.Text = c.ClientSecret;
            this.txtCallbackUrl.Text = c.Callback;
            this.hdnId.Value = c.Id.ToString();
        }

        protected void lnkSave_Click(object sender, EventArgs e)
        {
            if (!this.IsValid)
            {
                return;
            }
            var client = this.IsEditMode ? this.clientRepository.GetById(int.Parse(this.hdnId.Value)) : new Client();
            client.Name = this.txtName.Text;
            client.ClientIdentifier = this.txtClientId.Text;
            client.ClientSecret = this.txtClientSecret.Text;
            client.Callback = this.txtCallbackUrl.Text;
            client.ClientType = ClientType.Public;
            this.clientRepository.Save(client);
            this.Response.Redirect("~/_layouts/15/Taloyhtio/OAuth/admin/clients/list.aspx");
        }

        protected void lnkDelete_Click(object sender, EventArgs e)
        {
            if (this.IsEditMode)
            {
                var client = this.clientRepository.GetById(int.Parse(this.hdnId.Value));
                this.clientRepository.Delete(client);
            }
            this.Response.Redirect("~/_layouts/15/Taloyhtio/OAuth/admin/clients/list.aspx");
        }

        protected void lnkCancel_Click(object sender, EventArgs e)
        {
            this.Response.Redirect("~/_layouts/15/Taloyhtio/OAuth/admin/clients/list.aspx");
        }

        protected void validateName(object source, ServerValidateEventArgs args)
        {
            var client = this.clientRepository.GetByName(args.Value);
            args.IsValid = this.isUnique(client);
        }

        private bool isUnique(Client client)
        {
            if (client == null)
            {
                return true;
            }
            return this.IsEditMode ? client.Id == int.Parse(this.hdnId.Value) : false;
        }

        protected void validateClientId(object source, ServerValidateEventArgs args)
        {
            var client = this.clientRepository.GetByClientId(args.Value);
            args.IsValid = this.isUnique(client);
        }

        protected void validateClientSecret(object source, ServerValidateEventArgs args)
        {
            var client = this.clientRepository.GetByClientSecret(args.Value);
            args.IsValid = this.isUnique(client);
        }
    }
}