#!/bin/sh
# gen_version.sh -- write OpenPuck/git_version.h with the release/build identity shown in WebUSB.
# Keep both semver + hash so local untagged builds still expose provenance.
# Run this BEFORE `arduino-cli compile`. The generated header is git-ignored, so generating it never itself
# marks the tree dirty.
set -e
cd "$(dirname "$0")"

HASH=$(git rev-parse --short=8 HEAD 2>/dev/null || echo unknown)
VERSION="${OPK_BUILD_VERSION:-}"
if [ -z "$VERSION" ]; then
	SEMVER_RE='^(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$'
	VERSION="$(
		git tag --points-at HEAD 2>/dev/null \
			| grep -E "$SEMVER_RE" \
			| sort -V \
			| tail -n1 || true
	)"
fi
# 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_BUILD_VERSION "$VERSION"
#define OPK_GIT_HASH "$HASH"
#define OPK_GIT_DIRTY $DIRTY
EOF

echo "OpenPuck/git_version.h: version=${VERSION:-none} hash=$HASH dirty=$DIRTY"