budget_tracker_tui 1.4.1

A feature rich TUI budget tracker app
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use ratatui::layout::{Constraint, Direction, Layout, Rect};
use ratatui::style::Color;
use rust_decimal::Decimal;
use rust_decimal::prelude::*;

pub fn format_amount(amount: &Decimal) -> String {
    let value = amount.to_f64().unwrap_or(0.0);
    let s = format!("{:.2}", value.abs());
    let parts: Vec<&str> = s.split('.').collect();
    let int_part = parts[0];
    let frac_part = parts[1];

    let mut formatted_int = String::new();
    for (count, c) in int_part.chars().rev().enumerate() {
        if count > 0 && count % 3 == 0 {
            formatted_int.push(',');
        }
        formatted_int.push(c);
    }

    let formatted_int: String = formatted_int.chars().rev().collect();
    let sign = if value < 0.0 { "-" } else { "" };

    format!("{}{}.{}", sign, formatted_int, frac_part)
}

pub fn format_hours(amount: &Decimal, hourly_rate: Option<Decimal>) -> String {
    if let Some(rate) = hourly_rate
        && rate > Decimal::ZERO
    {
        let hours = (amount / rate).to_f64().unwrap_or(0.0);
        return format!("{:.1}h", hours);
    }
    format_amount(amount)
}

pub fn centered_rect(percent_x: u16, percent_y: u16, r: Rect) -> Rect {
    let popup_layout = Layout::default()
        .direction(Direction::Vertical)
        .constraints([
            Constraint::Percentage((100 - percent_y) / 2),
            Constraint::Percentage(percent_y),
            Constraint::Percentage((100 - percent_y) / 2),
        ])
        .split(r);

    Layout::default()
        .direction(Direction::Horizontal)
        .constraints([
            Constraint::Percentage((100 - percent_x) / 2),
            Constraint::Percentage(percent_x),
            Constraint::Percentage((100 - percent_x) / 2),
        ])
        .split(popup_layout[1])[1]
}

pub fn month_to_short_str(month: u32) -> &'static str {
    match month {
        1 => "Jan",
        2 => "Feb",
        3 => "Mar",
        4 => "Apr",
        5 => "May",
        6 => "Jun",
        7 => "Jul",
        8 => "Aug",
        9 => "Sep",
        10 => "Oct",
        11 => "Nov",
        12 => "Dec",
        _ => "?",
    }
}

pub fn month_to_color(month: u32) -> Color {
    match month {
        1 => Color::LightRed,
        2 => Color::LightGreen,
        3 => Color::LightBlue,
        4 => Color::LightYellow,
        5 => Color::LightMagenta,
        6 => Color::LightCyan,
        7 => Color::Red,
        8 => Color::Green,
        9 => Color::Blue,
        10 => Color::Yellow,
        11 => Color::Magenta,
        12 => Color::Cyan,
        _ => Color::White,
    }
}