use geo_macros::{module_ref_impl, ModuleRef};
use glow::HasContext;
use relm4::{
    adw::{self, prelude::*},
    gtk::{self, prelude::*},
    view, ComponentParts, SimpleComponent,
};
use std::{cell::RefCell, rc::Rc, sync::Arc};

use crate::{
    graphics::{
        planet::earth::{Earth, EarthConfig},
        transforms::plane::PlaneTrans,
        Graphics,
    },
    GL,
};

use super::{Module, ModuleCursor};

#[derive(ModuleRef)]
pub struct EarthModule<'b, 'gl: 'b> {
    gl: &'gl GL,
    earth: &'b mut Earth,
}

impl<'b, 'gl: 'b> EarthModule<'b, 'gl> {
    pub fn name(&self) -> &'static str {
        "Earth"
    }

    pub fn supported(&self, data: &Arc<radarg_core::Data>) -> bool {
        false
    }
}

impl<'b, 'gl: 'b> EarthModuleRef<'b, 'gl> {
    pub fn name(&self) -> &'static str {
        "Earth"
    }

    pub fn supported(&self, data: &Arc<radarg_core::Data>) -> bool {
        false
    }
}

impl<'b, 'gl: 'b> EarthModule<'b, 'gl> {
    pub fn new(gl: &'gl GL, earth: &'b mut Earth) -> Self {
        Self { gl, earth }
    }
}

impl<'b, 'gl: 'b> EarthModuleRef<'b, 'gl> {
    pub fn new(gl: &'gl GL, earth: &'b Earth) -> Self {
        Self { gl, earth }
    }
}

pub struct EarthModulePackage {}

impl<'b, 'gl: 'b> Module for EarthModule<'b, 'gl> {
    type Cursor = EarthModulePackage;
    type Data = ();
    type Operation = PlaneTrans;

    const NAME: &'static str = "Earth";

    fn load_data<'dt>(
        &self,
        data: &Self::Data,
        setting: &radarg_core::config::Setting,
    ) -> super::Result<Self::Cursor> {
        Ok(EarthModulePackage {})
    }

    fn render(
        &mut self,
        cursor: &mut Self::Cursor,
        operation: &crate::ui::operation::Operation<Self::Operation>,
        viewport: &crate::pg::layout_type::ViewPort,
    ) -> super::Result<()> {
        self.earth.mount(&self.gl)?;
        self.earth.set_config(&self.gl, &EarthConfig::default())?;
        operation.attach_with_program(&self.gl, self.earth.program_mut());

        // Camera Info
        let camera_loc = operation.camera().get_position();
        // focal length
        let focal_length = operation.projection().fov();
        let focal_length = 1.0 / ((focal_length / 2.0).to_radians().tan());

        // Viewport Info
        let resolution = viewport.size();

        let znear = operation.projection().z_near();
        let zfar = operation.projection().z_far();

        unsafe {
            let earth_program = self.earth.program_mut();
            let cloc = earth_program.get_uniform_location(&self.gl, "camera_location");
            let foc = earth_program.get_uniform_location(&self.gl, "focal_length");
            let res = earth_program.get_uniform_location(&self.gl, "resolution");

            let projection_params =
                earth_program.get_uniform_location(&self.gl, "projection_params");

            self.gl
                .uniform_3_f32(cloc.as_ref(), camera_loc.x, camera_loc.y, camera_loc.z);
            self.gl.uniform_1_f32(foc.as_ref(), focal_length);
            self.gl.uniform_2_f32_slice(res.as_ref(), &resolution);
            self.gl
                .uniform_2_f32(projection_params.as_ref(), znear, zfar);
        }

        self.earth.draw(&self.gl, 1);
        Ok(())
    }

    fn supported(&self, data: &radarg_core::Data) -> bool {
        false
    }
}

impl ModuleCursor for EarthModulePackage {
    type Module<'rf, 'gl: 'rf> = EarthModule<'rf, 'gl>;
    type Config = ();
    type Data = ();
    type Component = EarthModuleConfigComponent;
    type ComponentOutput = ();

    fn set_config<F>(&mut self, f: F)
    where
        F: FnOnce(&mut Self::Config),
    {
    }

    fn component_config(&self) -> () {
        ()
    }

    fn component_sender(&self) -> Box<dyn Fn(Self::ComponentOutput) -> crate::pg::SideBarInputMsg> {
        todo!()
    }
}

pub struct EarthModuleConfigComponent {}

#[relm4::component(pub)]
impl SimpleComponent for EarthModuleConfigComponent {
    type Widgets = EarthModuleConfigComponentWidgets;
    type Init = ();

    type Input = ();
    type Output = ();

    view! {
        adw::PreferencesPage {
        }
    }

    fn init(
        init: Self::Init,
        root: Self::Root,
        sender: relm4::ComponentSender<Self>,
    ) -> relm4::ComponentParts<Self> {
        let model = EarthModuleConfigComponent {};

        let widgets = view_output!();

        ComponentParts { model, widgets }
    }

    fn update(&mut self, message: Self::Input, sender: relm4::ComponentSender<Self>) {}
}