#!/bin/bash

# --- Date / time (no spaces/colons) ---
DATESTAMP=$(date +"%d%m%Y_%H%M%S")

# --- Git info (with fallbacks if not a git repo) ---
if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    GITHASH=$(git rev-parse --short HEAD 2>/dev/null || echo "no-git")
    BRANCH=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "no-branch")
    REPO_PATH=$(git rev-parse --show-toplevel 2>/dev/null || echo ".")
    REPO_NAME=$(basename "$REPO_PATH")
    REMOTE_URL=$(git remote get-url origin 2>/dev/null || echo "no-remote")
else
    GITHASH="no-git"
    BRANCH="no-branch"
    REPO_NAME="no-repo"
    REMOTE_URL="unknown"
fi

# --- Host and user ---
HOSTNAME=$(hostname)
USER_NAME=${USER:-unknown}

# --- Where to put the header (CubeIDE default) ---
OUT_DIR="." # "Core/Inc"
OUT_FILE="${OUT_DIR}/build_info.h"

mkdir -p "$OUT_DIR"

cat <<EOF > "$OUT_FILE"
/* Auto-generated: DO NOT EDIT */
#ifndef BUILD_INFO_H
#define BUILD_INFO_H

#define BUILD_DATE       "${DATESTAMP}"
#define BUILD_GIT_HASH   "${GITHASH}"
#define BUILD_BRANCH     "${BRANCH}"
#define BUILD_REPO       "${REPO_NAME}"
#define BUILD_HOST       "${HOSTNAME}"
#define BUILD_USER       "${USER_NAME}"
#define REMOTE_URL       "${REMOTE_URL}"

#endif /* BUILD_INFO_H */
EOF

echo "Generated ${OUT_FILE}"
cat ${OUT_FILE}