#!/bin/sh

set -e

remote=${1}
activity=${2}
delay=${3}

case "${EXPERIMENTAL_ADB_CHANNEL_TCP_PORT}" in
  '')
    t=`mktemp -d -t adb-channel.XXXXXX`
    adb_sock=localfilesystem:"${t}/sock"
    socat_sock=unix:"${t}/sock"
    atexit() {
      [ -z "${activity}" ] || adb shell am force-stop ${activity%%/*}
      adb forward --remove "${adb_sock}"
      rm -rf "${t}"
    }
    trap atexit EXIT
    ;;
  *)
    echo >&2 "WARNING: this ADB channel is open to everyone on this computer."
    adb_sock=tcp:"${EXPERIMENTAL_ADB_CHANNEL_TCP_PORT}"
    socat_sock=tcp:localhost:"${EXPERIMENTAL_ADB_CHANNEL_TCP_PORT}"
    ;;
esac

trap 'exit 0' HUP INT ALRM TERM

[ -z "${activity}" ] || adb shell am start -W ${activity}
[ -z "${delay}" ] || sleep "${delay}"

adb forward "${adb_sock}" "${remote}"
socat stdio "${socat_sock}"