using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using RomCheater.Logging;

namespace RomCheater.Core
{
    public interface IWebBrowserProvider
    {
        IWebBrowserInterface GetProvider();
    }
    public interface IWebBrowserInterface
    {        
        void Navigate(string urlString);    
        void Navigate(Uri url);
    }

    public class EmptyWebBrowserProvider : BaseWebBrowserProvider, IWebBrowserInterface
    {
        public EmptyWebBrowserProvider() :base()
        {
        }
    }

    public class WebBrowserProvider : BaseWebBrowserProvider, IWebBrowserInterface
    {
        public WebBrowserProvider() : this(new WebBrowser()) { }
        public WebBrowserProvider(IWebBrowserInterface provider) { }
        public WebBrowserProvider(WebBrowser provider)
            : base(provider)
        {
        }
    }

    public class BaseWebBrowserProvider : IWebBrowserInterface, IWebBrowserProvider
    {
        
        public BaseWebBrowserProvider() : this(new WebBrowser()) { }
        protected BaseWebBrowserProvider(WebBrowser provider)
        {
            this.Provider = provider;
        }
        #region IWebBrowserInterface Members
        private WebBrowser _Provider;
        public WebBrowser Provider { get { return _Provider; } protected set { _Provider = value; } }

        #region Extensions to WebBrowser provider
        public void Navigate(string urlString) { NavigateInternal(urlString); }
        public void Navigate(Uri url) { NavigateInternal(url.ToString()); }

        private void NavigateInternal(string url)
        {
            try
            {
                Uri uri = new Uri(url);
                this.Provider.Navigate(uri);
            }
            catch (UriFormatException ex)
            {
                MessageBox.Show(string.Format("Could not navigate to url: '{0}'", url), string.Format("A Uri Format Exception Occurred in '{0}'", this.GetType().Name), MessageBoxButtons.OK, MessageBoxIcon.Error);
                logger.Error.WriteLine("Unable to navigate to url: '{0}'", url);
                logger.VerboseError.WriteLine(ex.ToString());
            }
        }

        #endregion
        #endregion

        #region IWebBrowserProvider Members
        public IWebBrowserInterface GetProvider() { return (IWebBrowserInterface)this; }
        #endregion
    }

}