using System;
using System.Collections.Generic;
using ln.http.resources;
using ln.http;
using ln.templates;

namespace ln.http.resources
{
    public class TemplateResource : Resource
    {
        public Template Template { get; }
        public object This { get; set; }

        public override bool HandlesDispatching => true;

        public TemplateResource(Resource container, string filename)
            : base(container, System.IO.Path.GetFileName(filename))
        {
            Template = new Template(filename, (container as TemplateProvider));
        }
        public TemplateResource(Resource container, string filename,object This)
            :this(container,filename)
        {
            this.This = This;
        }

        public override IEnumerable<Resource> GetResources()
        {
            return new Resource[0];
        }

        public override bool Contains(string name)
        {
            return false;
        }

        public override void AddResource(Resource resource)
        {
            throw new NotImplementedException();
        }

        public override void RemoveResource(Resource resource)
        {
            throw new NotImplementedException();
        }

        public override HttpResponse GetResponse(HttpRequest httpRequest, Queue<string> pathStack) => GetResponse(httpRequest, pathStack.ToArray());
        public override HttpResponse GetResponse(HttpRequest httpRequest) => GetResponse(httpRequest,new string[0]);
        public HttpResponse GetResponse(HttpRequest httpRequest,string[] suffixPath)
        {
            HttpResponse httpResponse = new HttpResponse(httpRequest);

            Template.Context context = new Template.Context(Template);
            context.ExpressionContext.AddMappedValue("__root__", Root);
            context.ExpressionContext.AddMappedValue("__path__", suffixPath);
            context.ExpressionContext.AddMappedValue("request", httpRequest);
            context.ExpressionContext.AddMappedValue("response", httpResponse);
            context.ExpressionContext.AddMappedValue("this", This);

            bool unframed = httpRequest.GetRequestHeader("x-template-unframed", "framed").Equals("unframed");

            httpResponse.ContentWriter.Write(Template.Generate(context,unframed));

            return httpResponse;
        }
    }


}