using System.Collections.Generic;
using StereoKit;
using StereoKit.Framework;
namespace dofdemo;

static class Arts
{
    static Model assets_model = Model.FromFile("meshes/assets.glb", Shader.Unlit);
    static Dictionary<string, Mesh> meshes = new();
    static Material mat_mono = new Material("mono.hlsl");
    static Material mat_hand = Default.MaterialHand;
    static Material mat_unlit = new Material("unlit.hlsl");
    static Material mat_both = new Material("unlit.hlsl");
    static Material mat_backface = new Material("backface.hlsl");
    static Material mat_justcolor = new Material("justcolor.hlsl");
    static Material mat_colorcube = new Material("colorcube.hlsl");
    static Material mat_colorcursor = new Material("justcolor.hlsl");
    public static Vec3 shake = new(0, 0, 0);

    static TextStyle text_style;

    public static void Init()
    {
        foreach (ModelNode node in assets_model.Nodes)
        {
            if (node.Mesh != null)
            {
                meshes.Add(node.Name, node.Mesh);
            }
        }

        text_style = TextStyle.FromFont(
            Font.FromFile("Staatliches.ttf"),
            1.0f * U.cm,
            Color.White
        );

        mat_backface.FaceCull = Cull.Front;
        mat_backface.Transparency = Transparency.Add;
        mat_backface.DepthTest = DepthTest.LessOrEq;
        mat_backface.DepthWrite = false;

        mat_both.Chain = mat_backface;

        // draw ontop of everything
        mat_colorcursor.DepthTest = DepthTest.Always;

        mat_hand.Shader = Shader.FromFile("hand.hlsl");
    }

    public static void Frame()
    {
        // if (SK.GetStepper<PassthroughFBExt>().Enabled) {
        //     Input.HandVisible(Handed.Max, false);
        // }

        // world
        // Matrix m4_dof = Mono.dof_pose.ToMatrix(Mono.dof_scl);
        // Hierarchy.Push(m4_dof);

        // mesh test
        // meshes["Food"].Draw(
        //     mat_mono,
        //     Matrix.TRS(
        //         V.XYZ(0, 0, -1),
        //         Quat.Identity,
        //         0.1f
        //     )
        // );

        // unit cube
        // Mesh.Cube.Draw(
        //     mat_unlit,
        //     Matrix.Identity,
        //     Color.Hex(0x13180AFF).ToLinear()
        // );

        //// dofs

        // stretch_cursor
        {
            meshes["con"].Draw(
                mat_mono,
                Stretch.to_grab.pose.ToMatrix(1.5f * U.cm)
            );
            meshes["con"].Draw(
                mat_mono,
                Stretch.from_grab.pose.ToMatrix(1.5f * U.cm)
            );

            Mesh.Cube.Draw(
                mat_justcolor,
                Stretch.cursor.ToMatrix(V.XYZ(-1, 1, 1) * 1.2f * U.cm),
                Color.Hex(0x000000FF).ToLinear()
            );
            Mesh.Cube.Draw(
                mat_mono,
                Stretch.cursor.ToMatrix(1 * U.cm)
            );

            // particles
            Particle[] particles = Stretch.particles;
            for (int i = 0; i < particles.Length; i++)
            {
                Particle particle = particles[i];
                Mesh.Sphere.Draw(
                    mat_unlit,
                    Matrix.TRS(
                        particle.pos,
                        particle.ori,
                        particle.scl
                    ),
                    Color.Hex(0xFFFFFFFF).ToLinear()
                );
            }
        }

        // color_cube
        {
            meshes[ColorCube.toggle ? "color_cube_toggle" : "color_cube"].Draw(
                mat_colorcube,
                ColorCube.grab.pose.ToMatrix(ColorCube.scl)
            );

            Hierarchy.Push(ColorCube.grab.pose.ToMatrix(ColorCube.scl));
            // ColorCube.cursor render ontop *degree symbol with color inside
            Mesh.Sphere.Draw(
                mat_colorcursor,
                Matrix.TS(
                    ColorCube.cursor,
                    24.0f * U.cm
                ),
                Color.White
            );
            Mesh.Sphere.Draw(
                mat_colorcursor,
                Matrix.TS(
                    ColorCube.cursor,
                    16.0f * U.cm
                ),
                ColorCube.color
            );
            Hierarchy.Pop();
        }

        // reach_cursor
        {

        }

        // Hierarchy.Pop();


        // particles
        // Particle[] particles = VFX.particles;
        // for (int i = 0; i < particles.Length; i++)
        // {
        //     Particle particle = particles[i];
        //     meshes["FoodParticle"].Draw(
        //         mat_unlit,
        //         Matrix.TRS(
        //             particle.pos,
        //             particle.ori,
        //             particle.scl
        //         ),
        //         Color.Hex(0xC75A09FF).ToLinear()
        //     );
        // }

        // menu
        // Matrix m4_menu = Mono.menu_pose.ToMatrix(Mono.menu_scale);
        // Hierarchy.Push(m4_menu);

        // // score
        // char[] score_txt = Mono.score.ToString("000").ToCharArray();
        // for (int i = 0; i < score_txt.Length; i++)
        // {
        //     Text.Add(
        //         score_txt[i].ToString(),
        //         Matrix.TS(
        //             V.XYZ(0, 0, 0),
        //             48
        //         ),
        //         text_style
        //     );
        // }

        // Hierarchy.Pop();
    }
}