flawz 0.3.0

A Terminal UI for browsing CVEs
Documentation 
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use clap::ValueEnum;
use ratatui::style::{Color, Style};
use std::str::FromStr;

/// Built-in theme.
#[derive(Debug, Clone, PartialEq, ValueEnum, Default)]
pub enum BuiltinTheme {
    /// Dracula.
    #[default]
    Dracula,
    /// Nord.
    Nord,
    /// One Dark.
    OneDark,
    /// Solarized Dark.
    SolarizedDark,
    /// Gruvbox Light
    GruvboxLight,
}

impl BuiltinTheme {
    /// Parses the colors and returns the theme.
    pub fn get_theme(&self) -> Option<Theme> {
        match self {
            BuiltinTheme::Dracula => dracula_theme(),
            BuiltinTheme::Nord => nord_theme(),
            BuiltinTheme::OneDark => one_dark_theme(),
            BuiltinTheme::SolarizedDark => solarized_dark_theme(),
            BuiltinTheme::GruvboxLight => gruvbox_light_theme(),
        }
    }
}

/// Theme.
#[derive(Debug, Clone, PartialEq)]
pub struct Theme {
    /// Background.
    pub background: Style,
    /// Dim.
    pub dim: Style,
    /// Foreground.
    pub foreground: Style,
    /// Header text.
    pub header: Style,
    /// Footer text (key bindings).
    pub footer: Style,
    /// Block borders.
    pub borders: Style,
    /// Separator.
    pub separator: Style,
    /// Highlight text.
    pub highlight: Style,
    /// Index (selected item).
    pub index: Style,
    /// Input.
    pub input: Style,
    /// Input (when nothing found).
    pub input_empty: Style,
    /// Selected item.
    pub selected: Style,
    /// Scrollbar.
    pub scrollbar: Style,
}

/// <https://draculatheme.com/contribute>
fn dracula_theme() -> Option<Theme> {
    Some(Theme {
        background: Style::default()
            .bg(Color::from_str("#282A36").ok()?)
            .fg(Color::from_str("#F8F8F2").ok()?),
        dim: Style::default()
            .bg(Color::from_str("#282A36").ok()?)
            .fg(Color::from_str("#44475A").ok()?),
        foreground: Style::default().fg(Color::from_str("#F8F8F2").ok()?),
        header: Style::default()
            .bg(Color::from_str("#BD93F9").ok()?)
            .fg(Color::from_str("#282A36").ok()?),
        footer: Style::default()
            .bg(Color::from_str("#282A36").ok()?)
            .fg(Color::from_str("#8BE9FD").ok()?),
        selected: Style::default()
            .bg(Color::from_str("#44475A").ok()?)
            .fg(Color::from_str("#FFB86C").ok()?),
        borders: Style::default().fg(Color::from_str("#44475A").ok()?),
        separator: Style::default().fg(Color::from_str("#6272A4").ok()?),
        highlight: Style::default().fg(Color::from_str("#F1FA8C").ok()?),
        index: Style::default().fg(Color::from_str("#BD93F9").ok()?),
        input: Style::default().fg(Color::from_str("#50FA7B").ok()?),
        input_empty: Style::default().fg(Color::from_str("#FF79C6").ok()?),
        scrollbar: Style::default().fg(Color::from_str("#6272A4").ok()?),
    })
}

/// <https://www.nordtheme.com/docs/colors-and-palettes>
fn nord_theme() -> Option<Theme> {
    Some(Theme {
        background: Style::default()
            .bg(Color::from_str("#2E3440").ok()?)
            .fg(Color::from_str("#D8DEE9").ok()?),
        dim: Style::default()
            .bg(Color::from_str("#2E3440").ok()?)
            .fg(Color::from_str("#81A1C1").ok()?),
        foreground: Style::default().fg(Color::from_str("#D8DEE9").ok()?),
        header: Style::default()
            .bg(Color::from_str("#3B4252").ok()?)
            .fg(Color::from_str("#E5E9F0").ok()?),
        footer: Style::default()
            .bg(Color::from_str("#2E3440").ok()?)
            .fg(Color::from_str("#81A1C1").ok()?),
        selected: Style::default()
            .bg(Color::from_str("#434C5E").ok()?)
            .fg(Color::from_str("#8FBCBB").ok()?),
        borders: Style::default().fg(Color::from_str("#4C566A").ok()?),
        separator: Style::default().fg(Color::from_str("#88C0D0").ok()?),
        highlight: Style::default().fg(Color::from_str("#EBCB8B").ok()?),
        index: Style::default().fg(Color::from_str("#E5E9F0").ok()?),
        input: Style::default().fg(Color::from_str("#A3BE8C").ok()?),
        input_empty: Style::default().fg(Color::from_str("#BF616A").ok()?),
        scrollbar: Style::default().fg(Color::from_str("#4C566A").ok()?),
    })
}

/// <https://www.color-hex.com/color-palette/1017619>
fn one_dark_theme() -> Option<Theme> {
    Some(Theme {
        background: Style::default()
            .bg(Color::from_str("#282C34").ok()?)
            .fg(Color::from_str("#ABB2BF").ok()?),
        dim: Style::default()
            .bg(Color::from_str("#282C34").ok()?)
            .fg(Color::from_str("#4B5363").ok()?),
        foreground: Style::default().fg(Color::from_str("#ABB2BF").ok()?),
        header: Style::default()
            .bg(Color::from_str("#2C323C").ok()?)
            .fg(Color::from_str("#D19A66").ok()?),
        footer: Style::default()
            .bg(Color::from_str("#282C34").ok()?)
            .fg(Color::from_str("#61AFEF").ok()?),
        selected: Style::default()
            .bg(Color::from_str("#3E4451").ok()?)
            .fg(Color::from_str("#E06C75").ok()?),
        borders: Style::default().fg(Color::from_str("#4B5363").ok()?),
        separator: Style::default().fg(Color::from_str("#4B5363").ok()?),
        highlight: Style::default().fg(Color::from_str("#98C379").ok()?),
        index: Style::default().fg(Color::from_str("#D19A66").ok()?),
        input: Style::default().fg(Color::from_str("#56B6C2").ok()?),
        input_empty: Style::default().fg(Color::from_str("#E06C75").ok()?),
        scrollbar: Style::default().fg(Color::from_str("#4B5363").ok()?),
    })
}

/// <https://ethanschoonover.com/solarized/>
fn solarized_dark_theme() -> Option<Theme> {
    Some(Theme {
        background: Style::default()
            .bg(Color::from_str("#002B36").ok()?)
            .fg(Color::from_str("#93A1A1").ok()?),
        dim: Style::default()
            .bg(Color::from_str("#002B36").ok()?)
            .fg(Color::from_str("#586E75").ok()?),
        foreground: Style::default().fg(Color::from_str("#93A1A1").ok()?),
        header: Style::default()
            .bg(Color::from_str("#073642").ok()?)
            .fg(Color::from_str("#93A1A1").ok()?),
        footer: Style::default()
            .bg(Color::from_str("#002B36").ok()?)
            .fg(Color::from_str("#93A1A1").ok()?),
        selected: Style::default()
            .bg(Color::from_str("#073642").ok()?)
            .fg(Color::from_str("#B58900").ok()?),
        borders: Style::default().fg(Color::from_str("#586E75").ok()?),
        separator: Style::default().fg(Color::from_str("#268BD2").ok()?),
        highlight: Style::default().fg(Color::from_str("#93A1A1").ok()?),
        index: Style::default().fg(Color::from_str("#93A1A1").ok()?),
        input: Style::default().fg(Color::from_str("#859900").ok()?),
        input_empty: Style::default().fg(Color::from_str("#DC322F").ok()?),
        scrollbar: Style::default().fg(Color::from_str("#93A1A1").ok()?),
    })
}

/// <https://github.com/gruvbox-community/gruvbox-contrib>
fn gruvbox_light_theme() -> Option<Theme> {
    Some(Theme {
        background: Style::default()
            .bg(Color::from_str("#FBF1C7").ok()?)
            .fg(Color::from_str("#3C3836").ok()?),
        dim: Style::default()
            .bg(Color::from_str("#FBF1C7").ok()?)
            .fg(Color::from_str("#076678").ok()?),
        foreground: Style::default().fg(Color::from_str("#3C3836").ok()?),
        header: Style::default()
            .bg(Color::from_str("#A89984").ok()?)
            .fg(Color::from_str("#3C3836").ok()?),
        footer: Style::default()
            .bg(Color::from_str("#FBF1C7").ok()?)
            .fg(Color::from_str("#3C3836").ok()?),
        selected: Style::default()
            .bg(Color::from_str("#EBDBB2").ok()?)
            .fg(Color::from_str("#9D0006").ok()?),
        borders: Style::default().fg(Color::from_str("#076678").ok()?),
        separator: Style::default().fg(Color::from_str("#076678").ok()?),
        highlight: Style::default().fg(Color::from_str("#076678").ok()?),
        index: Style::default().fg(Color::from_str("#076678").ok()?),
        input: Style::default().fg(Color::from_str("#928374").ok()?),
        input_empty: Style::default().fg(Color::from_str("#9D0006").ok()?),
        scrollbar: Style::default().fg(Color::from_str("#282828").ok()?),
    })
}