#!/bin/sh
# gen_version.sh -- write OpenPuck/git_version.h with the current git short hash + dirty flag, for the build
# provenance shown in the WebUSB panel. Run this BEFORE `arduino-cli compile` (it's a no-op to re-run). The
# generated header is git-ignored, so generating it never itself marks the tree dirty.
set -e
cd "$(dirname "$0")"

HASH=$(git rev-parse --short=8 HEAD 2>/dev/null || echo unknown)
# Dirty = any tracked change OR untracked file (porcelain is empty only on a clean tree). git_version.h is
# git-ignored so it doesn't count.
if [ -z "$(git status --porcelain 2>/dev/null)" ]; then DIRTY=0; else DIRTY=1; fi

cat > OpenPuck/git_version.h <<EOF
// AUTO-GENERATED by gen_version.sh -- do not edit, do not commit (git-ignored).
#pragma once
#define OPK_GIT_HASH "$HASH"
#define OPK_GIT_DIRTY $DIRTY
EOF

echo "OpenPuck/git_version.h: hash=$HASH dirty=$DIRTY"