#!/bin/bash
# Wire the host-mounted LTspice binaries into the writable LTSPICE_DIR (which
# holds the Wine prefix baked at image build), start a virtual display for
# Wine, then hand off to the CMD.
set -e

src=/opt/ltspice-src
dst=${LTSPICE_DIR:-/opt/ltspice}

# The LTspice install is mounted read-only from the host; symlink the three
# things mcltspice's config references (exe, lib, examples) next to the prefix.
if [ -d "$src" ]; then
    for item in LTspice.exe lib examples; do
        if [ -e "$src/$item" ]; then
            ln -sfn "$src/$item" "$dst/$item"
        fi
    done
fi

# LTspice opens an X connection even in batch (-b) mode, so give Wine a
# headless display. Clear any stale lock first -- the build-time Xvfb on the
# same display can leave /tmp/.X99-lock baked into the image, which would make
# a naive "already running?" check skip startup (one container = one Xvfb).
if [ -n "$DISPLAY" ]; then
    rm -f "/tmp/.X${DISPLAY#:}-lock"
    Xvfb "$DISPLAY" -screen 0 1024x768x16 -nolisten tcp >/tmp/xvfb.log 2>&1 &
    # Give the server a moment to come up before the app can ask for it.
    for _ in 1 2 3 4 5 6 7 8 9 10; do
        [ -e "/tmp/.X11-unix/X${DISPLAY#:}" ] && break
        sleep 0.3
    done
fi

exec "$@"