#!/usr/bin/env bash
set -euo pipefail

# Pre-commit hook: C linting + tests.
# Mirrors the lint targets in Makefile.cbm.
#
# Setup (once after clone):
#   git config core.hooksPath scripts/hooks

LLVM_BIN="$(brew --prefix llvm 2>/dev/null)/bin"

# Resolve tool paths (Homebrew LLVM is keg-only on macOS)
CLANG_TIDY="${LLVM_BIN}/clang-tidy"
CLANG_FORMAT="${LLVM_BIN}/clang-format"
[ -x "$CLANG_TIDY" ] || CLANG_TIDY="clang-tidy"
[ -x "$CLANG_FORMAT" ] || CLANG_FORMAT="clang-format"

# --- clang-format (blocking — fastest, check first) ---
echo "pre-commit: checking formatting..."
make -f Makefile.cbm lint-format CLANG_FORMAT="$CLANG_FORMAT"

# --- cppcheck (blocking) ---
if command -v cppcheck &>/dev/null; then
    echo "pre-commit: running cppcheck..."
    make -f Makefile.cbm lint-cppcheck
else
    echo "pre-commit: cppcheck not found, skipping"
    echo "  install: brew install cppcheck"
fi

# --- clang-tidy (blocking) ---
if command -v "$CLANG_TIDY" &>/dev/null; then
    echo "pre-commit: running clang-tidy..."
    make -f Makefile.cbm lint-tidy CLANG_TIDY="$CLANG_TIDY"
else
    echo "pre-commit: clang-tidy not found, skipping"
    echo "  install: brew install llvm"
fi

# --- Build + Tests (blocking) ---
echo "pre-commit: building and running tests..."
make -f Makefile.cbm test