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

mkdir -p benchmark-results
benchmark_json="${BENCHMARK_JSON:-benchmark-results/current.json}"
benchmark_dir="${BENCHMARK_HYPERFINE_DIR:-tests/benchmarks/hyperfine}"

shopt -s nullglob
benchmark_scripts=("$benchmark_dir"/benchmark_*.sh)
shopt -u nullglob

if [ "${#benchmark_scripts[@]}" -eq 0 ]; then
  echo "No hyperfine benchmark scripts matching benchmark_*.sh found in $benchmark_dir" >&2
  exit 1
fi

echo "Benchmark Python: $(command -v python)"
python -c 'import sys; print(sys.version)'

commands=()
names=()
for benchmark_script in "${benchmark_scripts[@]}"; do
  title="$(sed -n 's/^# BENCHMARK_TITLE:[[:space:]]*//p' "$benchmark_script" | head -n 1)"
  if [ -z "$title" ]; then
    title="$(basename "$benchmark_script" .sh)"
  fi
  echo "Preflight benchmark script: $benchmark_script"
  bash "$benchmark_script"
  names+=(--command-name "$title")
  commands+=("bash $(printf "%q" "$benchmark_script")")
done

hyperfine \
  --show-output \
  --warmup 1 \
  --runs 5 \
  "${names[@]}" \
  --export-json "$benchmark_json" \
  "${commands[@]}"