microfetch/src/colors.rs

use std::env;
use std::sync::LazyLock;

pub struct Colors {
    pub reset: &'static str,
    pub blue: &'static str,
    pub cyan: &'static str,
    pub green: &'static str,
    pub yellow: &'static str,
    pub red: &'static str,
    pub magenta: &'static str,
}

impl Colors {
    const fn new(is_no_color: bool) -> Self {
        if is_no_color {
            Self {
                reset: "",
                blue: "",
                cyan: "",
                green: "",
                yellow: "",
                red: "",
                magenta: "",
            }
        } else {
            Self {
                reset: "\x1b[0m",
                blue: "\x1b[34m",
                cyan: "\x1b[36m",
                green: "\x1b[32m",
                yellow: "\x1b[33m",
                red: "\x1b[31m",
                magenta: "\x1b[35m",
            }
        }
    }
}

pub static COLORS: LazyLock<Colors> = LazyLock::new(|| {
    // check for NO_COLOR once at startup
    let is_no_color = env::var("NO_COLOR").is_ok();
    Colors::new(is_no_color)
});

pub fn print_dots() -> String {
    format!(
        "{}  {}  {}  {}  {}  {}  {}",
        COLORS.blue,
        COLORS.cyan,
        COLORS.green,
        COLORS.yellow,
        COLORS.red,
        COLORS.magenta,
        COLORS.reset,
    )
}