use mlua::{FromLua, IntoLua};

#[derive(Default, Debug, Clone, Copy)]
pub enum Window {
    #[default]
    View,
    Editor,
    Log,
    Error,
}

impl<'lua> FromLua<'lua> for Window {
    fn from_lua(
        value: mlua::prelude::LuaValue<'lua>,
        _lua: &'lua mlua::prelude::Lua,
    ) -> mlua::prelude::LuaResult<Self> {
        if value.is_string() {
            match value.as_str().unwrap().to_lowercase().as_ref() {
                "view" => Ok(Window::View),
                "editor" => Ok(Window::Editor),
                "log" => Ok(Window::Log),
                "error" => Ok(Window::Error),
                _ => Err(mlua::Error::runtime(
                    "window needs to be 'view', 'editor', 'log' or 'error'",
                )),
            }
        } else {
            Err(mlua::Error::runtime(
                "window needs to be 'view', 'editor', 'log' or 'error'",
            ))
        }
    }
}

impl<'lua> IntoLua<'lua> for Window {
    fn into_lua(
        self,
        lua: &'lua mlua::prelude::Lua,
    ) -> mlua::prelude::LuaResult<mlua::prelude::LuaValue<'lua>> {
        match self {
            Window::View => "view",
            Window::Editor => "editor",
            Window::Log => "log",
            Window::Error => "error",
        }.into_lua(lua)
    }
}