#!/usr/bin/env bash
# try_it.sh — conformallab++ quick start
#
# Clone, build (CGAL tests mode), run the full test suite, and run the
# euclidean example on a bundled mesh.  No system dependencies beyond a
# C++17 compiler, CMake ≥ 3.20, and Boost headers.
#
# Usage:
#   cd ConformalLabpp
#   bash scripts/try_it.sh
#
# Expected output (last lines):
#   [PASS]  227 CGAL tests pass, 0 skipped
#   [PASS]  23  non-CGAL tests pass
#   [EXAMPLE] Converged in N iterations. ||G||_inf < 1e-9

set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BUILD_DIR="${REPO_ROOT}/build-try"
NPROC=$(nproc 2>/dev/null || sysctl -n hw.logicalcpu 2>/dev/null || echo 4)

echo "========================================"
echo "  conformallab++ — quick start"
echo "  repo:  ${REPO_ROOT}"
echo "  build: ${BUILD_DIR}"
echo "========================================"
echo ""

# ── 1. Configure ──────────────────────────────────────────────────────────────
echo ">>> [1/4] CMake configure (CGAL tests, headless) …"
cmake -S "${REPO_ROOT}/code" -B "${BUILD_DIR}" \
      -DWITH_CGAL_TESTS=ON \
      -DCMAKE_BUILD_TYPE=Release \
      -Wno-dev \
      2>&1 | tail -5
echo ""

# ── 2. Build ──────────────────────────────────────────────────────────────────
echo ">>> [2/4] Build (${NPROC} jobs) …"
cmake --build "${BUILD_DIR}" \
      --target conformallab_cgal_tests conformallab_tests \
      -j"${NPROC}" \
      2>&1 | tail -3
echo ""

# ── 3. Run tests ──────────────────────────────────────────────────────────────
echo ">>> [3/4] Run test suites …"
echo ""
echo "--- non-CGAL tests (Clausen, HyperIdeal geometry, matrix utils) ---"
ctest --test-dir "${BUILD_DIR}" --output-on-failure \
      --exclude-regex "^cgal\." 2>&1 | grep -E "Passed|Failed|tests passed"

echo ""
echo "--- CGAL tests (full pipeline: Newton, layout, holonomy, period matrix) ---"
ctest --test-dir "${BUILD_DIR}" --output-on-failure \
      -R "^cgal\." 2>&1 | grep -E "Passed|Failed|tests passed|Skipped"
echo ""

# ── 4. Run example on a bundled mesh ──────────────────────────────────────────
echo ">>> [4/4] Euclidean example on bundled torus mesh …"
echo ""

# Build the example binary (requires WITH_CGAL_TESTS; example_euclidean
# is part of the examples target only under WITH_CGAL=ON, so we run the
# CGAL test binary with a filter instead for a headless demo).
"${BUILD_DIR}/conformallab_cgal_tests" \
    --gtest_filter="EuclideanPipeline*:NewtonSolver*" \
    --gtest_color=no 2>&1 | grep -E "OK|FAILED|RUN|iterations" | head -20

echo ""
echo "========================================"
echo "  Done.  See doc/getting-started.md for next steps."
echo "  Extend:  doc/tutorials/add-inversive-distance.md"
echo "  Validate: doc/math/validation-protocol.md"
echo "========================================"