#!/usr/bin/env bash
# =============================================================================
# MCPletA2A — stop.sh
# Gracefully stops all managed services (SIGTERM → wait → SIGKILL).
# =============================================================================
set -uo pipefail

BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PID_DIR="$BASE_DIR/.pids"

GREEN='\033[0;32m'; YELLOW='\033[1;33m'; RED='\033[0;31m'
CYAN='\033[0;36m'; BOLD='\033[1m'; RESET='\033[0m'
info() { echo -e "${CYAN}[stop]${RESET} $*"; }
ok()   { echo -e "${GREEN}[stop]${RESET} $*"; }
warn() { echo -e "${YELLOW}[stop]${RESET} $*"; }

stop_service() {
  local name="$1"
  local pidfile="$PID_DIR/$name.pid"

  if [[ ! -f "$pidfile" ]]; then
    warn "$name: no pid file found (already stopped?)"
    return
  fi

  local pid
  pid=$(cat "$pidfile")

  if ! kill -0 "$pid" 2>/dev/null; then
    warn "$name: process $pid is not running (stale pid file removed)"
    rm -f "$pidfile"
    return
  fi

  info "Stopping $name (pid $pid) ..."
  kill -TERM "$pid" 2>/dev/null || true

  # Wait up to 5 s for graceful exit
  local waited=0
  while kill -0 "$pid" 2>/dev/null && [[ $waited -lt 10 ]]; do
    sleep 0.5
    waited=$((waited + 1))
  done

  if kill -0 "$pid" 2>/dev/null; then
    warn "$name did not exit gracefully — sending SIGKILL"
    kill -KILL "$pid" 2>/dev/null || true
  fi

  rm -f "$pidfile"
  ok "$name stopped"
}

if [[ ! -d "$PID_DIR" ]]; then
  warn "No .pids directory found — nothing to stop"
  exit 0
fi

# Stop in reverse start order
stop_service "platform-host"
stop_service "mock-services"

echo ""
echo -e "${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${RESET}"
echo -e "${GREEN}${BOLD}  MCPletA2A stopped${RESET}"
echo -e "${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${RESET}"