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use std::str::FromStr;
use mlua::{FromLua, IntoLua};
use ratatui::style::{Color, Styled, Stylize};
#[derive(Clone)]
pub struct ColorPair {
pub fg: Color,
pub bg: Color,
}
impl ColorPair {
pub const fn new(fg: Color, bg: Color) -> Self {
ColorPair { bg, fg }
}
pub fn apply<S, I>(&self, s: S) -> <I as Styled>::Item
where
S: Styled<Item = I>,
I: Styled,
{
s.bg(self.bg).fg(self.fg)
}
}
impl<'lua> FromLua<'lua> for ColorPair {
fn from_lua(
value: mlua::prelude::LuaValue<'lua>,
_lua: &'lua mlua::prelude::Lua,
) -> mlua::prelude::LuaResult<Self> {
if value.is_table() {
let table = value.as_table().unwrap();
if let Ok(fg) = table.get::<_, LuaColor>(1) {
if let Ok(bg) = table.get::<_, LuaColor>(2) {
return Ok(ColorPair::new(fg.into(), bg.into()));
}
} else if let Ok(fg) = table.get::<_, LuaColor>("fg") {
if let Ok(bg) = table.get::<_, LuaColor>("bg") {
return Ok(ColorPair::new(fg.into(), bg.into()));
}
}
}
return Err(mlua::Error::runtime("could not parse colorpair"));
}
}
impl<'lua> IntoLua<'lua> for ColorPair {
fn into_lua(
self,
lua: &'lua mlua::prelude::Lua,
) -> mlua::prelude::LuaResult<mlua::prelude::LuaValue<'lua>> {
let table = lua.create_table()?;
table.set("fg", LuaColor::from(self.fg))?;
table.set("bg", LuaColor::from(self.bg))?;
Ok(table.into_lua(lua)?)
}
}
struct LuaColor {
color: Color,
}
impl LuaColor {
fn new(color: Color) -> Self {
Self { color }
}
}
impl From<Color> for LuaColor {
fn from(value: Color) -> Self {
LuaColor::new(value)
}
}
impl Into<Color> for LuaColor {
fn into(self) -> Color {
self.color
}
}
impl<'lua> FromLua<'lua> for LuaColor {
fn from_lua(
value: mlua::prelude::LuaValue<'lua>,
_lua: &'lua mlua::prelude::Lua,
) -> mlua::prelude::LuaResult<Self> {
if value.is_string() {
let str = value.as_str().unwrap();
match Color::from_str(str) {
Ok(color) => Ok(color.into()),
Err(_) => Err(mlua::Error::runtime("color has wrong format")),
}
} else {
Err(mlua::Error::runtime("color has wrong format"))
}
}
}
impl<'lua> IntoLua<'lua> for LuaColor {
fn into_lua(
self,
lua: &'lua mlua::prelude::Lua,
) -> mlua::prelude::LuaResult<mlua::prelude::LuaValue<'lua>> {
Ok(self.color.to_string().to_lowercase().into_lua(lua)?)
}
}
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