using FeMM.Grasshopper.Helpers;
using Grasshopper.Kernel;
using Grasshopper.Kernel.Data;
using Grasshopper.Kernel.Types;
using St7API;
using System;
using System.Collections.Generic;

namespace FeMM.Grasshopper.Components.ST2R
{
    public class St7GetAllNodesXYZComponent : GH_Component
    {
        private bool _run = false;

        public St7GetAllNodesXYZComponent()
            : base("Get Nodes Positions", "GetNodesPositions",
                  "Returns nodes positions",
                  CategoryNameConstants.CATEGORY_F2R, CategoryNameConstants.SUBCATEGORY_ST2R_BAKE)
        { }

        public override void CreateAttributes()
        {
            // Add a button to trigger the operation
            var buttonAttributes = new ComponentAttributes.ComponentOneButtonAttributes(this, "Get Nodes");
            buttonAttributes.ButtonPressed += () =>
            {
                _run = true;
                ExpireSolution(true); // triggers SolveInstance
            };
            m_attributes = buttonAttributes;
        }

        protected override void RegisterInputParams(GH_InputParamManager p)
        {
            p.AddIntegerParameter("uID", "ID", "Straus7 model file ID", GH_ParamAccess.item);
        }

        protected override void RegisterOutputParams(GH_OutputParamManager p)
        {
            p.AddIntegerParameter("NodeNumbers", "Nodes", "Node numbers", GH_ParamAccess.tree);
            p.AddNumberParameter("Coordinates", "C", "Coordinates of nodes as [X,Y,Z]", GH_ParamAccess.tree);
            p.AddTextParameter("Log", "Log", "Debug messages", GH_ParamAccess.list);
        }

        protected override void SolveInstance(IGH_DataAccess DA)
        {
            int uid = 0;
            if (!DA.GetData(0, ref uid)) return;

            List<string> log = [];
            GH_Structure<GH_Integer> nodeNumbersTree = new();
            GH_Structure<GH_Number> xyzTree = new();

            if (!_run)
            {
                DA.SetDataTree(0, nodeNumbersTree);
                DA.SetDataTree(1, xyzTree);
                DA.SetDataList(2, log);
                return;
            }

            int nodeNum = 1;
            while (true)
            {
                double[] xyz = new double[3];
                long err = St7.St7GetNodeXYZ(uid, nodeNum, xyz);

                if (err != 0)
                {
                    log.Add($"Stopped at Node {nodeNum}, error code {err}");
                    break;
                }

                // Node number branch
                GH_Path nodePath = new(nodeNum - 1);
                nodeNumbersTree.Append(new GH_Integer(nodeNum), nodePath);

                // XYZ branch
                GH_Path xyzPath = new(nodeNum - 1);
                xyzTree.Append(new GH_Number(xyz[0]), xyzPath);
                xyzTree.Append(new GH_Number(xyz[1]), xyzPath);
                xyzTree.Append(new GH_Number(xyz[2]), xyzPath);

                log.Add($"Node {nodeNum}: X={xyz[0]}, Y={xyz[1]}, Z={xyz[2]}");

                nodeNum++;
            }

            DA.SetDataTree(0, nodeNumbersTree);
            DA.SetDataTree(1, xyzTree);
            DA.SetDataList(2, log);
            _run = false; // reset button state
        }

        protected override System.Drawing.Bitmap Icon => Properties.Resources.St7GetAllNodesXYZIcon;

        public override Guid ComponentGuid => new("b1c2d3e4-5678-4abc-9d12-abcdef123463");
    }
}