ndbioimage 0.2.0

use crate::error::Error;
use phf::phf_map;
use std::fmt::Display;
use std::str::FromStr;

/// a static map from color names (like `"red"` or single letters like `"r"`) to hex strings
pub static COLORS: phf::Map<&'static str, &'static str> = phf_map! {
    "b" => "#0000FF",
    "g" => "#008000",
    "r" => "#FF0000",
    "c" => "#00BFBF",
    "m" => "#BF00BF",
    "y" => "#BFBF00",
    "k" => "#000000",
    "w" => "#FFFFFF",
    "aliceblue" => "#F0F8FF",
    "antiquewhite" => "#FAEBD7",
    "aqua" => "#00FFFF",
    "aquamarine" => "#7FFFD4",
    "azure" => "#F0FFFF",
    "beige" => "#F5F5DC",
    "bisque" => "#FFE4C4",
    "black" => "#000000",
    "blanchedalmond" => "#FFEBCD",
    "blue" => "#0000FF",
    "blueviolet" => "#8A2BE2",
    "brown" => "#A52A2A",
    "burlywood" => "#DEB887",
    "cadetblue" => "#5F9EA0",
    "chartreuse" => "#7FFF00",
    "chocolate" => "#D2691E",
    "coral" => "#FF7F50",
    "cornflowerblue" => "#6495ED",
    "cornsilk" => "#FFF8DC",
    "crimson" => "#DC143C",
    "cyan" => "#00FFFF",
    "darkblue" => "#00008B",
    "darkcyan" => "#008B8B",
    "darkgoldenrod" => "#B8860B",
    "darkgray" => "#A9A9A9",
    "darkgreen" => "#006400",
    "darkgrey" => "#A9A9A9",
    "darkkhaki" => "#BDB76B",
    "darkmagenta" => "#8B008B",
    "darkolivegreen" => "#556B2F",
    "darkorange" => "#FF8C00",
    "darkorchid" => "#9932CC",
    "darkred" => "#8B0000",
    "darksalmon" => "#E9967A",
    "darkseagreen" => "#8FBC8F",
    "darkslateblue" => "#483D8B",
    "darkslategray" => "#2F4F4F",
    "darkslategrey" => "#2F4F4F",
    "darkturquoise" => "#00CED1",
    "darkviolet" => "#9400D3",
    "deeppink" => "#FF1493",
    "deepskyblue" => "#00BFFF",
    "dimgray" => "#696969",
    "dimgrey" => "#696969",
    "dodgerblue" => "#1E90FF",
    "firebrick" => "#B22222",
    "floralwhite" => "#FFFAF0",
    "forestgreen" => "#228B22",
    "fuchsia" => "#FF00FF",
    "gainsboro" => "#DCDCDC",
    "ghostwhite" => "#F8F8FF",
    "gold" => "#FFD700",
    "goldenrod" => "#DAA520",
    "gray" => "#808080",
    "green" => "#008000",
    "greenyellow" => "#ADFF2F",
    "grey" => "#808080",
    "honeydew" => "#F0FFF0",
    "hotpink" => "#FF69B4",
    "indianred" => "#CD5C5C",
    "indigo" => "#4B0082",
    "ivory" => "#FFFFF0",
    "khaki" => "#F0E68C",
    "lavender" => "#E6E6FA",
    "lavenderblush" => "#FFF0F5",
    "lawngreen" => "#7CFC00",
    "lemonchiffon" => "#FFFACD",
    "lightblue" => "#ADD8E6",
    "lightcoral" => "#F08080",
    "lightcyan" => "#E0FFFF",
    "lightgoldenrodyellow" => "#FAFAD2",
    "lightgray" => "#D3D3D3",
    "lightgreen" => "#90EE90",
    "lightgrey" => "#D3D3D3",
    "lightpink" => "#FFB6C1",
    "lightsalmon" => "#FFA07A",
    "lightseagreen" => "#20B2AA",
    "lightskyblue" => "#87CEFA",
    "lightslategray" => "#778899",
    "lightslategrey" => "#778899",
    "lightsteelblue" => "#B0C4DE",
    "lightyellow" => "#FFFFE0",
    "lime" => "#00FF00",
    "limegreen" => "#32CD32",
    "linen" => "#FAF0E6",
    "magenta" => "#FF00FF",
    "maroon" => "#800000",
    "mediumaquamarine" => "#66CDAA",
    "mediumblue" => "#0000CD",
    "mediumorchid" => "#BA55D3",
    "mediumpurple" => "#9370DB",
    "mediumseagreen" => "#3CB371",
    "mediumslateblue" => "#7B68EE",
    "mediumspringgreen" => "#00FA9A",
    "mediumturquoise" => "#48D1CC",
    "mediumvioletred" => "#C71585",
    "midnightblue" => "#191970",
    "mintcream" => "#F5FFFA",
    "mistyrose" => "#FFE4E1",
    "moccasin" => "#FFE4B5",
    "navajowhite" => "#FFDEAD",
    "navy" => "#000080",
    "oldlace" => "#FDF5E6",
    "olive" => "#808000",
    "olivedrab" => "#6B8E23",
    "orange" => "#FFA500",
    "orangered" => "#FF4500",
    "orchid" => "#DA70D6",
    "palegoldenrod" => "#EEE8AA",
    "palegreen" => "#98FB98",
    "paleturquoise" => "#AFEEEE",
    "palevioletred" => "#DB7093",
    "papayawhip" => "#FFEFD5",
    "peachpuff" => "#FFDAB9",
    "peru" => "#CD853F",
    "pink" => "#FFC0CB",
    "plum" => "#DDA0DD",
    "powderblue" => "#B0E0E6",
    "purple" => "#800080",
    "rebeccapurple" => "#663399",
    "red" => "#FF0000",
    "rosybrown" => "#BC8F8F",
    "royalblue" => "#4169E1",
    "saddlebrown" => "#8B4513",
    "salmon" => "#FA8072",
    "sandybrown" => "#F4A460",
    "seagreen" => "#2E8B57",
    "seashell" => "#FFF5EE",
    "sienna" => "#A0522D",
    "silver" => "#C0C0C0",
    "skyblue" => "#87CEEB",
    "slateblue" => "#6A5ACD",
    "slategray" => "#708090",
    "slategrey" => "#708090",
    "snow" => "#FFFAFA",
    "springgreen" => "#00FF7F",
    "steelblue" => "#4682B4",
    "tan" => "#D2B48C",
    "teal" => "#008080",
    "thistle" => "#D8BFD8",
    "tomato" => "#FF6347",
    "turquoise" => "#40E0D0",
    "violet" => "#EE82EE",
    "wheat" => "#F5DEB3",
    "white" => "#FFFFFF",
    "whitesmoke" => "#F5F5F5",
    "yellow" => "#FFFF00",
    "yellowgreen" => "#9ACD32",
};

/// a color with red, green and blue components, parsed from a hex string (`#RRGGBB`) or a name in [`COLORS`]
#[derive(Clone, Debug)]
pub struct Color {
    r: u8,
    g: u8,
    b: u8,
}

impl FromStr for Color {
    type Err = Error;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        let s = if !s.starts_with("#") {
            if let Some(s) = COLORS.get(s) {
                s
            } else {
                return Err(Error::InvalidColor(s.to_string()));
            }
        } else {
            s
        };
        let r = u8::from_str_radix(&s[1..3], 16)?;
        let g = u8::from_str_radix(&s[3..5], 16)?;
        let b = u8::from_str_radix(&s[5..], 16)?;
        Ok(Self { r, g, b })
    }
}

impl Display for Color {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "#{:02X}{:02X}{:02X}", self.r, self.g, self.b)
    }
}

impl Color {
    /// the color as an RGB vector `[r, g, b]`
    pub fn to_rgb(&self) -> Vec<u8> {
        vec![self.r, self.g, self.b]
    }
}