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

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
# shellcheck source=scripts/local-debug/env.sh
source "$ROOT_DIR/scripts/local-debug/env.sh"

if [[ ! -d "$LOCAL_DEBUG_PID_DIR" ]]; then
  printf 'no local debug pid directory at %s\n' "$LOCAL_DEBUG_PID_DIR"
else
  for name in platform_web run platform; do
    pid_file="$LOCAL_DEBUG_PID_DIR/$name.pid"
    if [[ ! -f "$pid_file" ]]; then
      continue
    fi
    pid="$(cat "$pid_file")"
    if kill -0 "$pid" 2>/dev/null; then
      printf 'stopping %s pid %s\n' "$name" "$pid"
      kill "$pid" 2>/dev/null || true
    else
      printf '%s pid %s is not running\n' "$name" "$pid"
    fi
    rm -f "$pid_file"
  done
fi

wait_for_pid_exit() {
  local pid="$1"
  for _ in $(seq 1 20); do
    if ! kill -0 "$pid" 2>/dev/null; then
      return 0
    fi
    sleep 0.25
  done
  return 1
}

listener_owned_by_local_debug() {
  local pid="$1"
  local details
  details="$(lsof -nP -p "$pid" 2>/dev/null || true)"
  [[ "$details" == *"$ROOT_DIR"* || "$details" == *"$LOCAL_DEBUG_ROOT"* ]]
}

stop_listener_on_port() {
  local name="$1"
  local port="$2"
  local pid
  pid="$(lsof -tiTCP:"$port" -sTCP:LISTEN 2>/dev/null | head -n 1 || true)"
  if [[ -z "$pid" ]]; then
    return 0
  fi

  if listener_owned_by_local_debug "$pid"; then
    printf 'stopping %s listener pid %s on port %s\n' "$name" "$pid" "$port"
    kill "$pid" 2>/dev/null || true
    if ! wait_for_pid_exit "$pid"; then
      printf '%s listener pid %s did not stop after SIGTERM; sending SIGKILL\n' "$name" "$pid"
      kill -9 "$pid" 2>/dev/null || true
      wait_for_pid_exit "$pid" || true
    fi
    return 0
  else
    printf '%s port %s is still used by pid %s outside local debug ownership\n' "$name" "$port" "$pid" >&2
  fi
}

stop_listener_on_port platform "$LOCAL_DEBUG_PLATFORM_PORT"
stop_listener_on_port platform_web "$LOCAL_DEBUG_WEB_PORT"