#!/usr/bin/env bash
# Generates the same real load used to produce docs/output/*.txt against a
# running instance of the app (localhost:8080 by default).
#
# Usage: scripts/load.sh {cpu|alloc|lock|orders|all}
set -euo pipefail
HOST="${HOST:-localhost:8080}"

cpu() {
  echo "6 concurrent fibonacci(38) calls..."
  for i in 1 2 3 4 5 6; do curl -s "$HOST/api/cpu/fibonacci?n=38" -o /dev/null & done
  wait
}

alloc() {
  echo "3 concurrent allocation-churn calls..."
  for i in 1 2 3; do curl -s "$HOST/api/alloc/churn?iterations=400000" -o /dev/null & done
  wait
}

lock() {
  echo "one 16-worker, 20ms-hold lock-contention burst..."
  curl -s "$HOST/api/lock/contend?workers=16&holdMillis=20"; echo
}

orders() {
  echo "60 order-processing calls (custom JFR event)..."
  for i in $(seq 1 60); do curl -s "$HOST/api/orders/process?items=$((3 + i % 5))" -o /dev/null; done
  echo "done"
}

case "${1:-all}" in
  cpu) cpu ;;
  alloc) alloc ;;
  lock) lock ;;
  orders) orders ;;
  all) cpu; alloc; lock; orders ;;
  *) echo "usage: $0 {cpu|alloc|lock|orders|all}" >&2; exit 1 ;;
esac