#!/bin/bash
set -u

PID_FILE="${TRIM_PKGVAR}/havline.pid"
LOG_FILE="${TRIM_PKGVAR}/logs/app.log"
SOCKET_PATH="${TRIM_APPDEST}/app.sock"

mkdir -p "${TRIM_PKGVAR}/logs"

log_msg() {
  echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
}

check_process() {
  local pid="$1"
  kill -0 "$pid" 2>/dev/null
}

status_app() {
  if [ -f "$PID_FILE" ]; then
    local pid
    pid="$(head -n 1 "$PID_FILE" | tr -d '[:space:]')"
    if [ -n "$pid" ] && check_process "$pid"; then
      return 0
    fi
    rm -f "$PID_FILE"
  fi
  return 1
}

arch_dir() {
  case "$(uname -m)" in
    x86_64|amd64) echo "amd64" ;;
    aarch64|arm64) echo "arm64" ;;
    *) return 1 ;;
  esac
}

start_app() {
  if status_app; then
    return 0
  fi

  local arch
  arch="$(arch_dir)" || {
    echo "不支持的设备架构：$(uname -m)" > "$TRIM_TEMP_LOGFILE"
    exit 1
  }

  local bin="${TRIM_APPDEST}/server/${arch}/havline"
  if [ ! -x "$bin" ]; then
    echo "找不到原生二进制：$bin" > "$TRIM_TEMP_LOGFILE"
    exit 1
  fi

  export HAVLINE_DATA_DIR="$TRIM_PKGVAR"
  export HAVLINE_LISTEN="127.0.0.1:6893"
  export HAVLINE_GATEWAY_SOCKET="$SOCKET_PATH"
  export HAVLINE_GATEWAY_PREFIX="/app/havline"
  export HAVLINE_UPDATER_SOCKET=""
  export HAVLINE_NGINX_BIN="$TRIM_APPDEST/server/$arch/nginx"
  export HAVLINE_NGINX_MIME_TYPES="$TRIM_APPDEST/server/mime.types"
  export HAVLINE_NGINX_PID="$TRIM_PKGVAR/nginx/nginx.pid"
  export HAVLINE_NGINX_HTTP_PORT="${wizard_nginx_http_port:-18080}"
  export HAVLINE_NGINX_HTTPS_PORT="${wizard_nginx_https_port:-9443}"
  export LD_LIBRARY_PATH="$TRIM_APPDEST/server/$arch/lib:${LD_LIBRARY_PATH:-}"
  export TZ="${wizard_timezone:-Asia/Shanghai}"

  if [ -n "${wizard_initial_admin_password:-}" ]; then
    export HAVLINE_INITIAL_ADMIN_PASSWORD="$wizard_initial_admin_password"
  fi

  rm -f "$SOCKET_PATH"
  log_msg "Starting Havline native"
  cd "$TRIM_APPDEST" || exit 1
  nohup "$bin" >> "$LOG_FILE" 2>&1 &
  echo "$!" > "$PID_FILE"
  sleep 1
  status_app
}

stop_app() {
  if [ ! -f "$PID_FILE" ]; then
    rm -f "$SOCKET_PATH"
    return 0
  fi

  local pid
  pid="$(head -n 1 "$PID_FILE" | tr -d '[:space:]')"
  if [ -n "$pid" ] && check_process "$pid"; then
    kill -TERM "$pid" 2>> "$LOG_FILE" || true
    local count=0
    while check_process "$pid" && [ "$count" -lt 15 ]; do
      sleep 1
      count=$((count + 1))
    done
    if check_process "$pid"; then
      kill -KILL "$pid" 2>> "$LOG_FILE" || true
    fi
  fi

  rm -f "$PID_FILE" "$SOCKET_PATH"
}

case "${1:-}" in
  start)
    start_app
    ;;
  stop)
    stop_app
    ;;
  status)
    if status_app; then
      exit 0
    fi
    exit 3
    ;;
  *)
    echo "Unknown command: ${1:-}" > "$TRIM_TEMP_LOGFILE"
    exit 1
    ;;
esac