mklinks

#!/usr/bin/env bash

set -euo pipefail

# resolve the repo root from the script's own location so it works from any clone
DOTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
CONF="${XDG_CONFIG_HOME:-$HOME/.config}"
STATE="${XDG_STATE_HOME:-$HOME/.local/state}"
DATA="${XDG_DATA_HOME:-$HOME/.local/share}"
BIN="$HOME/.local/bin"
APPLICATIONS="$DATA/applications"

# mirrors install.sh, which skips desktop-only packages on WSL (see README)
is_wsl() {
    if [ -n "${WSL_DISTRO_NAME:-}" ]; then
        return 0
    fi
    grep -qiE '(microsoft|wsl)' /proc/version 2>/dev/null
}

# dotfiles under .config that only make sense with a desktop session
desktop_only() {
    case "$1" in
        ghostty|hypr|quickshell|zathura) return 0 ;;
        *) return 1 ;;
    esac
}

if is_wsl; then
    WSL=true
else
    WSL=false
fi

mklink() {
    local target=$1
    local link=$2
    local name="$(basename "$link")"

    if [ -L "$link" ]; then
        # if a symlink is broken from an old/moved path,
        # or simply the wrong target, repoint it
        if [ "$(readlink "$link")" = "$target" ]; then
            echo "  ok  $name"
            return
        fi
        echo "  relink  $name"
        ln -sfn "$target" "$link"
    elif [ -e "$link" ]; then
        echo "  skip     $name (already exists and is not a symlink)"
    else
        echo "  link     $name"
        ln -s "$target" "$link"
    fi
}

echo "Symlinking dotfiles from $DOTDIR"
echo

if [ "$WSL" = true ]; then
    echo "WSL detected: desktop-only entries will be skipped"
    echo
fi

mkdir -p "$CONF" "$BIN" "$STATE"

echo "configs -> $CONF"
for entry in "$DOTDIR/.config/"*; do
    [ -e "$entry" ] || continue # check if the path exists, otherwise skip
    name="$(basename "$entry")"
    if [ "$WSL" = true ] && desktop_only "$name"; then
        echo "  skip     $name"
        continue
    fi
    mklink "$entry" "$CONF/$name"
done

echo
echo "scripts -> $BIN"
for script in "$DOTDIR/.local/bin/"*; do
    [ -f "$script" ] || continue # check if it's actually a file, otherwise skip
    chmod +x "$script"
    mklink "$script" "$BIN/$(basename "$script")"
done

echo
echo "state -> $STATE"
for entry in "$DOTDIR/.local/state/"*; do
    [ -e "$entry" ] || continue # check if the path exists, otherwise skip
    mklink "$entry" "$STATE/$(basename "$entry")"
done

echo
echo "applications -> $APPLICATIONS"
if [ "$WSL" = true ]; then
    echo "  skip     applications (desktop only)"
else
    mkdir -p "$APPLICATIONS"
    for entry in "$DOTDIR/.local/share/applications/"*; do
        [ -e "$entry" ] || continue # check if the path exists, otherwise skip
        mklink "$entry" "$APPLICATIONS/$(basename "$entry")"
    done
fi

echo
echo "themes -> $DATA/themes"
if [ "$WSL" = true ]; then
    echo "  skip     themes (desktop only)"
else
    mkdir -p "$DATA/themes"
    for entry in "$DOTDIR/.local/share/themes/"*; do
        [ -e "$entry" ] || continue # check if the path exists, otherwise skip
        mklink "$entry" "$DATA/themes/$(basename "$entry")"
    done
fi

echo
echo "Done."