use gui::{SenseCtx, SenseTrigger, Vec2};
use winit::event::WindowEvent;

use crate::testing::Client;

#[derive(Default)]
pub struct Input {
    size: Vec2,
    mouse_pos: Vec2,
    mouse_pressed: bool,
    mouse_just_pressed: bool,
}

impl Input {
    pub fn event(&mut self, event: &WindowEvent) {
        self.mouse_just_pressed = false;
        match event {
            WindowEvent::Resized(size) => {
                self.size = Vec2::new(size.width as f32, size.height as f32)
            }
            WindowEvent::CursorMoved { position, .. } => {
                self.mouse_pos = Vec2::new(position.x as f32, position.y as f32)
            }
            WindowEvent::MouseInput { state, button, .. } => match button {
                winit::event::MouseButton::Left => {
                    if state.is_pressed() {
                        if !self.mouse_pressed {
                            self.mouse_just_pressed = true;
                        } else {
                            self.mouse_just_pressed = false;
                        }
                        self.mouse_pressed = true;
                    } else {
                        self.mouse_pressed = false;
                    }
                }
                _ => (),
            },
            _ => (),
        }
    }
    fn active(&mut self, trigger: &SenseTrigger) -> bool {
        let region = trigger.shape.to_screen(self.size);
        if !region.contains(self.mouse_pos) {
            return false;
        }
        match trigger.sense {
            gui::Sense::Click => self.mouse_just_pressed,
            gui::Sense::Hover => true,
        }
    }
}

impl SenseCtx for Client {
    fn active(&mut self, trigger: &SenseTrigger) -> bool {
        self.input.active(trigger)
    }
}