zerest 0.1.0

In the process of being developed by Rust as of January 2025...
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mod event;
mod ui;
mod word;

use ratatui::DefaultTerminal;
use std::{io, time::Instant};

#[derive(Debug)]
pub struct App {
	pub counter:               u8,
	pub(crate) exit:           bool,
	pub(crate) current_word:   String,
	pub(crate) last_update:    Instant,
	pub(crate) checkbox_state: bool,
	pub(crate) slider_value:   u8,
	pub(crate) input_text:     String,
	pub(crate) focused_widget: FocusedWidget,
	pub(crate) list_items:     Vec<String>,
	pub(crate) selected_item:  Option<usize>,
	pub(crate) tree_state:     bool,
}

#[derive(Debug, PartialEq)]
pub(crate) enum FocusedWidget {
	Counter,
	Checkbox,
	Slider,
	Input,
	List,
	Tree,
}

impl Default for App {
	fn default() -> Self {
		Self {
			counter:        0,
			exit:           false,
			current_word:   String::from("Lorem"),
			last_update:    Instant::now(),
			checkbox_state: false,
			slider_value:   50,
			input_text:     String::new(),
			focused_widget: FocusedWidget::Counter,
			list_items:     vec!["Item 1".to_string(), "Item 2".to_string(), "Item 3".to_string()],
			selected_item:  None,
			tree_state:     false,
		}
	}
}

impl App {
	fn next_focus(&mut self) {
		self.focused_widget = match self.focused_widget {
			FocusedWidget::Counter => FocusedWidget::Checkbox,
			FocusedWidget::Checkbox => FocusedWidget::Slider,
			FocusedWidget::Slider => FocusedWidget::Input,
			FocusedWidget::Input => FocusedWidget::List,
			FocusedWidget::List => FocusedWidget::Tree,
			FocusedWidget::Tree => FocusedWidget::Counter,
		};
	}

	fn previous_focus(&mut self) {
		self.focused_widget = match self.focused_widget {
			FocusedWidget::Counter => FocusedWidget::Tree,
			FocusedWidget::Checkbox => FocusedWidget::Counter,
			FocusedWidget::Slider => FocusedWidget::Checkbox,
			FocusedWidget::Input => FocusedWidget::Slider,
			FocusedWidget::List => FocusedWidget::Input,
			FocusedWidget::Tree => FocusedWidget::List,
		};
	}
}

impl App {
	/// runs the application's main loop until the user quits
	pub fn run(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
		while !self.exit {
			terminal.draw(|frame| self.draw(frame))?;
			self.handle_events()?;
		}
		Ok(())
	}

	pub(crate) fn exit(&mut self) { self.exit = true; }

	pub(crate) fn increment_counter(&mut self) { self.counter += 1; }

	pub(crate) fn decrement_counter(&mut self) { self.counter -= 1; }
}