fumble 0.6.1

an oxidized implementation of the original clumsy tool, designed to simulate adverse network conditions on Windows systems.
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use crate::cli::tui::traits::{DisplayName, HandleInput, IsActive, KeyBindings};
use crate::cli::tui::widgets::utils::block_ext::RoundedBlockExt;
use crate::cli::tui::widgets::utils::style_textarea_based_on_validation;
use crate::cli::tui::widgets::utils::textarea_ext::TextAreaExt;
use crate::cli::tui::widgets::utils::textarea_parsing::ParseFromTextArea;
use crate::network::modules::stats::drop_stats::DropStats;
use crate::network::types::probability::Probability;
use ratatui::buffer::Buffer;
use ratatui::crossterm::event::{KeyCode, KeyEvent, KeyEventKind};
use ratatui::layout::{Constraint, Layout, Margin, Rect};
use ratatui::style::Style;
use ratatui::widgets::{Block, Paragraph, Widget};
use tui_textarea::TextArea;

pub struct DropWidget<'a> {
    title: String,
    probability_text_area: TextArea<'a>,
    is_active: bool,
    interacting: bool,
    pub probability: Result<Probability, String>,
    drop_rate: f64,
    dropped_packets: usize,
    total_packets: usize,
}

impl Default for DropWidget<'_> {
    fn default() -> Self {
        Self::new()
    }
}

impl DropWidget<'_> {
    pub fn new() -> Self {
        DropWidget {
            title: "Drop".to_string(),
            probability_text_area: TextArea::default(),
            is_active: false,
            interacting: false,
            probability: Ok(Probability::default()),
            drop_rate: 0.0,
            dropped_packets: 0,
            total_packets: 0,
        }
    }

    pub fn set_probability(&mut self, probability: Probability) {
        self.probability_text_area
            .set_text(&probability.to_string());
        self.probability = Ok(probability);
    }

    pub fn update_data(&mut self, stats: &DropStats) {
        self.drop_rate = stats.recent_drop_rate();
        self.dropped_packets = stats.total_dropped;
        self.total_packets = stats.total_packets;
    }
}

impl HandleInput for DropWidget<'_> {
    fn handle_input(&mut self, key: KeyEvent) -> bool {
        if !self.interacting {
            if key.code == KeyCode::Enter && key.kind == KeyEventKind::Press {
                self.interacting = true;
                return true;
            }
        } else {
            if let KeyCode::Enter | KeyCode::Esc = key.code {
                self.interacting = false;
                return false;
            }
            if self.probability_text_area.input(key) {
                self.probability = Probability::parse_from_text_area(&self.probability_text_area);
            }
            return true;
        }
        false
    }
}

impl DisplayName for DropWidget<'_> {
    fn name(&self) -> &str {
        &self.title
    }
}

impl KeyBindings for DropWidget<'_> {
    fn key_bindings(&self) -> String {
        "Exit: Esc".to_string()
    }
}

impl IsActive for DropWidget<'_> {
    fn is_active(&self) -> bool {
        self.is_active
    }

    fn set_active(&mut self, state: bool) {
        self.is_active = state;
    }
}

impl Widget for &mut DropWidget<'_> {
    fn render(self, area: Rect, buf: &mut Buffer)
    where
        Self: Sized,
    {
        let [drop_probability_area, info_area] =
            Layout::horizontal([Constraint::Max(10), Constraint::Min(25)]).areas(area.inner(
                Margin {
                    horizontal: 1,
                    vertical: 1,
                },
            ));

        self.probability_text_area
            .set_cursor_visibility(self.interacting);
        self.probability_text_area.set_dim_placeholder("0.1");
        self.probability_text_area
            .set_cursor_line_style(Style::default());
        self.probability_text_area
            .set_block(Block::roundedt("Probability").highlight_if(self.interacting));
        if !self.probability_text_area.lines()[0].is_empty() {
            style_textarea_based_on_validation(&mut self.probability_text_area, &self.probability);
        }
        self.probability_text_area
            .render(drop_probability_area, buf);

        let [drop_rate_info, drop_count_info, _excess_info] = Layout::horizontal([
            Constraint::Max(12),
            Constraint::Max(18),
            Constraint::Fill(1),
        ])
        .areas(info_area);
        Paragraph::new(format!("{:.2}%", self.drop_rate * 100.0))
            .block(Block::bordered().title("Drop rate"))
            .render(drop_rate_info, buf);
        Paragraph::new(format!("{}/{}", self.dropped_packets, self.total_packets))
            .right_aligned()
            .block(Block::bordered().title("Drop count"))
            .render(drop_count_info, buf);
    }
}