#!/bin/bash
# runSmokeTests.sh
#
# Smoke test for the production solver.
#
# A smoke test proves only that simulationCases/bretherton.c compiles and
# integrates a few dozen time steps at coarse resolution without blowing
# up. It compares against nothing and therefore supports no claim about
# the discretisation or the physics. The exact-solution comparisons live
# in verificationCases/ and are driven by
# verificationCases/runVerification.sh.
#
# Usage:
#   bash testCases/runSmokeTests.sh
#
# Author: Vatsal Sanjay
# Organization: CoMPhy Lab, Durham University

set -euo pipefail

SCRIPT_DIR="\$(cd "\$(dirname "\${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="\$(cd "\${SCRIPT_DIR}/.." && pwd)"

for arg in "\$@"; do
  case "\$arg" in
    -h|--help)
      sed -n '2,15p' "\${BASH_SOURCE[0]}"
      exit 0
      ;;
    *)
      echo "ERROR: Unknown option: \$arg" >&2
      exit 1
      ;;
  esac
done

if [[ -f "\${REPO_ROOT}/.project_config" ]]; then
  # shellcheck disable=SC1091
  source "\${REPO_ROOT}/.project_config"
fi

if ! command -v qcc >/dev/null 2>&1; then
  echo "ERROR: qcc not found in PATH." >&2
  exit 1
fi

echo "-----------------------------------------"
echo "Smoke test: simulationCases/bretherton.c"
echo "-----------------------------------------"

SMOKE_CASE_DIR="\${REPO_ROOT}/simulationCases/9999"
SMOKE_RECEIPT="\$(mktemp "\${TMPDIR:-/tmp}/bretherton-smoke-XXXXXXXX.log")"
trap 'rm -f -- "\${SMOKE_RECEIPT}"' EXIT
EXPECTED_INCOMPLETE="INCOMPLETE_TMAX: case 9999 reached tmax without the requested stationarity milestone: Ca 0.05, La 1, muR 0.01, rhoR 0.001."
rm -rf "\$SMOKE_CASE_DIR"

FAILED=0
set +e
bash "\${REPO_ROOT}/runSimulation.sh" "testCases/smoke.params" \
  2>&1 | tee "\${SMOKE_RECEIPT}"
RUN_STATUS=\${PIPESTATUS[0]}
set -e

TERMINAL_OUTPUT="\$(
  grep -E '^(SUCCESS:|INCOMPLETE_|HARDFAIL_)' "\${SMOKE_RECEIPT}" || true
)"
if [[ \${RUN_STATUS} -eq 1 ]] && \
   [[ "\${TERMINAL_OUTPUT}" == "\${EXPECTED_INCOMPLETE}" ]]; then
  SMOKE_LOG="\${SMOKE_CASE_DIR}/c9999-log"
  if [[ -f "\$SMOKE_LOG" ]] && \
     [[ "\$(grep -cv '^#' "\$SMOKE_LOG")" -ge 10 ]] && \
     ! grep -qi "blew up" "\$SMOKE_LOG"; then
    echo "bretherton.c smoke test: PASS (\$(grep -cv '^#' "\$SMOKE_LOG") logged steps; expected tmax incomplete)"
  else
    echo "bretherton.c smoke test: FAIL (missing or truncated log)" >&2
    FAILED=1
  fi
else
  echo "bretherton.c smoke test: FAIL (status \${RUN_STATUS}; expected exact INCOMPLETE_TMAX status 1)" >&2
  FAILED=1
fi

exit \$FAILED