use gpui::{Refineable as _, RenderOnce, Styled, svg};
use paste::paste;

use crate::app;

macro_rules! define_font_icons {
    ($($name:ident),+ $(,)?) => {
        paste! {
            #[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
            pub enum FontIcon {
                $($name),+
            }

            pub const fn icon_path(icon: FontIcon) -> &'static str {
                match icon {
                    $(
                        FontIcon::$name => concat!(
                            "asset/font_icon/",
                            stringify!([<$name:snake>]),
                            ".svg"
                        ),
                    )+
                }
            }
        }
    };
}

define_font_icons!(
    Check,
    ChevronDown,
    FolderGit,
    Github,
    ArrowRight,
    Cat,
    PencilLine,
    UserPlus,
    List,
    PullRequestArrow,
    PullRequestClosed,
    PullRequestDraft,
    GitMerge,
    Eye,
    RefreshCw,
    Star,
    MessageCircleMore,
    FileBracesCorner,
);

#[derive(gpui::IntoElement)]
pub struct FontIconSvg {
    icon: FontIcon,
    style: gpui::StyleRefinement,
}

pub fn font_icon(icon: FontIcon) -> FontIconSvg {
    FontIconSvg {
        icon,
        style: gpui::StyleRefinement::default(),
    }
}

impl Styled for FontIconSvg {
    fn style(&mut self) -> &mut gpui::StyleRefinement {
        &mut self.style
    }
}

impl RenderOnce for FontIconSvg {
    fn render(self, _window: &mut gpui::Window, cx: &mut gpui::App) -> impl gpui::IntoElement {
        let theme = app::current_theme(cx);

        let mut svg = svg()
            .path(icon_path(self.icon))
            .text_color(theme.colors.text);
        svg.style().refine(&self.style);
        svg
    }
}