using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using Rhino;
using Grasshopper.Kernel;
using Grasshopper.Kernel.Types;
using Rhino.Geometry;

namespace TEST
{
    public class TrialComponent : GH_Component
    {   
        //Constructor initializes component details
        public TrialComponent()
            : base("TEST", "TEST", "TEST", "TEST", "TEST")
        {
        }

        private void InputParam_ObjectChanged(Object sender, GH_ObjectChangedEventArgs e)
        {
            if (e.Type == GH_ObjectEventType.Sources)
            {
                int n = Params.Input.Count;
                if (Params.Input[n - 1] == sender)
                {
                    if (Params.Input[n - 1].SourceCount > 0)
                    {
                        Grasshopper.Kernel.Parameters.Param_GenericObject temp = (Grasshopper.Kernel.Parameters.Param_GenericObject)sender;
                        string data = temp.Sources.ElementAt(0).VolatileData.DataDescription(false, false);
                        int number = Convert.ToInt32(data);  
                      
                        //Assuming that input contains the number of additional input parameters required                        
                        for (int i = 0; i < number; i++)
                        {
                            Grasshopper.Kernel.Parameters.Param_GenericObject paramIn = new Grasshopper.Kernel.Parameters.Param_GenericObject();
                            paramIn.Optional = true;
                            paramIn.MutableNickName = true;
                            paramIn.Access = GH_ParamAccess.tree;
                            paramIn.Name = "Input " + (i+1).ToString();
                            paramIn.NickName = "I" + (i+1).ToString();
                            paramIn.Description = "Input #" + (i + 1).ToString();
                            Params.RegisterInputParam(paramIn);                                
                            Params.OnParametersChanged();
                        }                  
                    }
                }
            }
        }

        //Register input parameters of component
        protected override void RegisterInputParams(GH_Component.GH_InputParamManager pManager)
        {
            pManager.Register_GenericParam("Number", "No", "Number of additional inputs required", GH_ParamAccess.tree);
            pManager[0].Optional = true;
            pManager[0].MutableNickName = false;
            pManager[0].ObjectChanged += new IGH_DocumentObject.ObjectChangedEventHandler(InputParam_ObjectChanged);            
        }

        //Register output parameters of component
        protected override void RegisterOutputParams(GH_Component.GH_OutputParamManager pManager)
        {            
            pManager.Register_GenericParam("Output", "O", "Output");            
        }

        //Solver
        protected override void SolveInstance(IGH_DataAccess DA)
        {
            //Declare output variable
            List<Grasshopper.Kernel.Types.IGH_Goo> output = new List<Grasshopper.Kernel.Types.IGH_Goo>();

            for (int i = 1; i < Params.Input.Count; i++)
            {                
                //Declare input variables
                Grasshopper.Kernel.Data.GH_Structure<Grasshopper.Kernel.Types.IGH_Goo> data = null;

                //Get input data
                DA.GetDataTree(i, out data); 

                if (data == null)
                    continue;

                output.AddRange(data);
            }
            
            //Set output data
            DA.SetDataList(0, output);
        }

        //Guid of component
        public override Guid ComponentGuid
        {
            get { return new Guid("C98E5EA4-5715-47DD-A7CD-48192EA7F57B"); }
        }

        //Icon of component
        protected override Bitmap Icon
        {
            get
            {
                return new Bitmap(Tool.Properties.Resources.AdaptabilityRater);
            }
        }

        //Exposure of component        
        public override GH_Exposure Exposure
        {
            get
            {
                return GH_Exposure.primary;
            }
        }
    }
}