#!/bin/bash
# Install udt by symlink, so the repo stays canonical.
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
# Licensed under the GNU General Public License v2 only.
set -euo pipefail

repo="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
target="$HOME/.config/rofi/udt"

mkdir -p "$target" "$HOME/bin" "$HOME/.cache/wal"

# Generate every themed config from the selected scheme first: the rofi palette
# symlinked below is one of its outputs, so this has to run before anything is
# linked. It fails loudly if a role names a colour the scheme does not define,
# which is the whole point of keeping the colours in one place.
selector="$HOME/.config/udt/roles.conf"
if [ ! -f "$selector" ]; then
    install -Dm644 "$repo/palette/roles.conf.default" "$selector"
    echo "seeded $selector"
fi
"$repo/bin/udt-palette"

# Theme files are symlinked individually; accent.rasi is NOT, it points at the
# generated file in the wal cache instead.
for f in palette.rasi common.rasi menu.rasi list.rasi grid.rasi powermenu.rasi confirm.rasi; do
    ln -sfn "$repo/rofi/udt/$f" "$target/$f"
done

# launcher.rasi is generated rather than symlinked: its wallpaper path comes
# from the wal cache and cannot be committed. Regenerating it is why re-running
# this script after moving the repo is safe.
rm -f "$target/launcher.rasi"
sed "s|@WPAPER@|$HOME/.cache/wal/wpaper|" \
    "$repo/rofi/udt/launcher.rasi" > "$target/launcher.rasi"

# Seed the generated accent if it does not exist yet, so themes parse on a
# fresh install before any wallpaper has been set.
if [ ! -f "$HOME/.cache/wal/udt-accent.rasi" ]; then
    cp "$repo/rofi/udt/accent.rasi" "$HOME/.cache/wal/udt-accent.rasi"
fi
ln -sfn "$HOME/.cache/wal/udt-accent.rasi" "$target/accent.rasi"

ln -sfn "$repo/bin/udt-accent" "$HOME/bin/udt-accent"
ln -sfn "$repo/bin/udt-palette" "$HOME/bin/udt-palette"

# The generated configs for everything that is not rofi. These are copied
# rather than symlinked: each app owns its config file and mixes theme keys
# with settings that are none of this repo's business.
scheme="$(sed -n 's/^scheme *= *//p' "$selector")"

# waybar reads whichever themes/<name>.css style.css imports, so write the file
# under the scheme's own name and repoint the import. The older per-flavour
# files in themes/ are left alone; they are simply no longer imported.
install -Dm644 "$repo/templates/waybar/theme.css" \
    "$HOME/.config/waybar/themes/$scheme.css"
if [ -f "$HOME/.config/waybar/style.css" ]; then
    sed -i "s|@import \"themes/.*\.css\";|@import \"themes/$scheme.css\";|" \
        "$HOME/.config/waybar/style.css"
fi

install -Dm644 "$repo/templates/terminal/kitty-theme.conf" \
    "$HOME/.config/kitty/current-theme.conf"

echo "installed:"
ls -l "$target" "$HOME/bin/udt-accent"