using System;
using System.Web.WebPages;
using umbraco.cms.businesslogic.macro;
using umbraco.interfaces;
using umbraco.MacroEngines.Library;

namespace umbraco.MacroEngines
{
    public abstract class BaseContext<T> : WebPage, IMacroContext
    {

        private MacroModel _macro;
        private INode _node;
        protected T CurrentModel;
        protected IParameterDictionary ParameterDictionary;
        protected ICultureDictionary CultureDictionary;

        public dynamic Parameter { get { return ParameterDictionary; } }
        public dynamic Dictionary { get { return CultureDictionary; } }

        public MacroModel Macro { get { return _macro; } }
        public INode Node { get { return _node; } }

        public T Current { get { return CurrentModel; } }
        public new dynamic Model { get { return CurrentModel; } }

        public virtual void SetMembers(MacroModel macro, INode node)
        {
            if (macro == null)
                throw new ArgumentNullException("macro");
            if (node == null)
                throw new ArgumentNullException("node");
            _macro = macro;
            ParameterDictionary = new UmbracoParameterDictionary(macro.Properties);
            CultureDictionary = new UmbracoCultureDictionary();
            _node = node;
        }

        protected override void ConfigurePage(WebPageBase parentPage)
        {
            if (parentPage == null)
                return;
            //Inject SetMembers Into New Context
            if (parentPage is IMacroContext)
            {
                var macroContext = (IMacroContext)parentPage;
                SetMembers(macroContext.Macro, macroContext.Node);
            }
        }

        public string GetParameter(string alias)
        {
            return ParameterDictionary[alias];
        }

        public string GetDictionary(string key)
        {
            return CultureDictionary[key];
        }

        public RazorLibraryCore Library
        {
            get
            {
                return new RazorLibraryCore(this._node);
            }
        }


    }
}