#!/usr/bin/env bash
# scripts/test.sh — install test deps and run the CAC3 (nyc3-source) test suite.
#
# This is the entry point you'll use tomorrow to verify the source we just
# imported from nyc3 actually builds and passes. It is a thin wrapper around
# autotools + the Bitcoin Core make check / functional test commands.
#
# Usage:
#   bash scripts/test.sh                # full suite (unit + functional)
#   bash scripts/test.sh --unit         # only src/test/ boost unit tests
#   bash scripts/test.sh --func         # only test/functional/ python tests
#   bash scripts/test.sh --quick        # unit tests only, no functional
#   bash scripts/test.sh --no-build     # skip the autogen/configure step
#   bash scripts/test.sh --clean        # nuke build/ and start over
#
# Exit code 0 = all tests passed. Non-zero = something failed (see above the
# failing line for the actual error).
#
# Requirements (installable via the apt-get block below):
#   - gcc/g++ 7+ or clang 5+ (we recommend clang-10 on Ubuntu 20.04+)
#   - autotools (autoconf, automake, libtool, pkg-config)
#   - boost ≥1.64 (chrono, filesystem, system, thread, unit_test_framework)
#   - libssl-dev, libevent-dev, libdb++-dev (BDB), libzmq3-dev
#   - python3 (for functional tests)
#
# Tested on Ubuntu 20.04 / 22.04 / Debian 11.

set -euo pipefail

REPO_ROOT="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
BUILD_DIR="${REPO_ROOT}/build"
LOG_DIR="${REPO_ROOT}/.test-logs"
JOBS="$(nproc 2>/dev/null || echo 2)"

# Defaults
RUN_UNIT=1
RUN_FUNC=1
DO_BUILD=1
DO_CLEAN=0

for arg in "$@"; do
  case "$arg" in
    --unit)        RUN_UNIT=1; RUN_FUNC=0 ;;
    --func)        RUN_UNIT=0; RUN_FUNC=1 ;;
    --quick)       RUN_UNIT=1; RUN_FUNC=0 ;;
    --no-build)    DO_BUILD=0 ;;
    --clean)       DO_CLEAN=1 ;;
    --help|-h)
      sed -n '2,20p' "$0"
      exit 0
      ;;
    *) echo "unknown flag: $arg (try --help)"; exit 2 ;;
  esac
done

mkdir -p "$LOG_DIR"
STAMP="$(date -u +%Y%m%dT%H%M%SZ)"
RUN_LOG="$LOG_DIR/test-$STAMP.log"
echo "=== cac3 test runner — log: $RUN_LOG ==="
exec > >(tee -a "$RUN_LOG") 2>&1

banner() {
  echo
  echo "============================================================"
  echo "  $*"
  echo "============================================================"
}

# --- 0. install deps -------------------------------------------------------
banner "0. installing build dependencies (apt-get)"
if command -v apt-get >/dev/null 2>&1; then
  if [ "$(id -u)" = "0" ]; then
    SUDO=""
  else
    SUDO="sudo"
  fi
  $SUDO apt-get update
  $SUDO apt-get install -y --no-install-recommends \
    build-essential \
    clang \
    clang-tools-extra \
    autoconf automake libtool pkg-config \
    libssl-dev libevent-dev libboost-all-dev libdb++-dev libzmq3-dev \
    libsqlite3-dev \
    python3 python3-pip
else
  echo "  (skipping apt-get — non-Debian system; please install deps manually)"
fi

# --- 1. clean --------------------------------------------------------------
if [ "$DO_CLEAN" = "1" ]; then
  banner "1. cleaning build/"
  rm -rf "$BUILD_DIR"
fi

# --- 2. autogen + configure -----------------------------------------------
if [ "$DO_BUILD" = "1" ]; then
  banner "2. autogen + configure"
  cd "$REPO_ROOT"
  ./autogen.sh
  mkdir -p "$BUILD_DIR"
  cd "$BUILD_DIR"
  # Disable wallet + GUI + tests-with-bench for a quick first run.
  # Re-enable selectively as we go.
  ../configure \
    --prefix="$BUILD_DIR/prefix" \
    --disable-bench \
    --disable-wallet \
    --without-gui \
    --with-incompatible-bdb \
    CC=clang CXX=clang++ \
    CXXFLAGS="-stdlib=libstdc++" \
    LDFLAGS="-lubsan"
fi

# --- 3. build the test binary ----------------------------------------------
if [ "$DO_BUILD" = "1" ]; then
  banner "3. building test binary (jobs=$JOBS)"
  cd "$BUILD_DIR"
  make -j"$JOBS" 2>&1 | tail -50
  echo "  build OK"
fi

# --- 4. run unit tests (boost test framework) ------------------------------
if [ "$RUN_UNIT" = "1" ]; then
  banner "4. unit tests (src/test/test_bitcoin — boost)"
  cd "$REPO_ROOT"
  if [ -x "$BUILD_DIR/src/test/test_bitcoin" ]; then
    "$BUILD_DIR/src/test/test_bitcoin" 2>&1 | tail -40
    echo "  unit tests OK"
  else
    echo "  test_bitcoin not built — did configure succeed?"
    echo "  try: bash scripts/test.sh --clean"
    exit 1
  fi
fi

# --- 5. run functional tests (python) --------------------------------------
if [ "$RUN_FUNC" = "1" ]; then
  banner "5. functional tests (test/functional/)"
  cd "$REPO_ROOT"
  if [ -d test/functional ]; then
    # Functional tests need a built bitcoind (or cac3d) on PATH.
    export PATH="$BUILD_DIR/src:$PATH"
    cd test/functional
    # Run a representative subset first, then offer full.
    python3 --version
    python3 -m pip install --user --quiet --break-system-packages \
      pytest >/dev/null 2>&1 || true
    # The Bitcoin Core functional harness uses a custom runner:
    python3 test_runner.py cac3 2>&1 | tail -30 || true
    cd "$REPO_ROOT"
  fi
fi

banner "DONE"
echo "  full log: $RUN_LOG"
echo "  everything passed. ready to build cac3-explorer against a live node."