#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#

import copy
import multiprocessing
import os
import sys

from crossrunner.util import merge_dict


def domain_socket_path(port):
  return '/tmp/ThriftTest.thrift.%d' % port


class TestProgram(object):
  def __init__(self, kind, name, protocol, transport, socket, workdir, command, env=None,
               extra_args=[], join_args=False, **kwargs):
    self.kind = kind
    self.name = name
    self.protocol = protocol
    self.transport = transport
    self.socket = socket
    self.workdir = workdir
    self.command = None
    self._base_command = self._fix_cmd_path(command)
    if env:
      self.env = copy.copy(os.environ)
      self.env.update(env)
    else:
      self.env = os.environ
    self._extra_args = extra_args
    self._join_args = join_args

  def _fix_cmd_path(self, cmd):
    # if the arg is a file in the current directory, make it path
    def abs_if_exists(arg):
      p = self.workdir.decode(sys.getfilesystemencoding())
      p = os.path.join(p, arg.decode(sys.getfilesystemencoding()))
      p = p.encode(sys.getfilesystemencoding())
      return p if os.path.exists(p) else arg

    if cmd[0] == 'python':
      cmd[0] = sys.executable
    else:
      cmd[0] = abs_if_exists(cmd[0])
    return cmd

  def _socket_args(self, socket, port):
    return {
      'ip-ssl': ['--ssl'],
      'domain': ['--domain-socket=%s' % domain_socket_path(port)],
      'abstract': ['--abstract-namespace', '--domain-socket=%s' % domain_socket_path(port)],
    }.get(socket, None)

  def build_command(self, port):
    cmd = copy.copy(self._base_command)
    args = []
    args.append('--protocol=' + self.protocol)
    args.append('--transport=' + self.transport)
    socket_args = self._socket_args(self.socket, port)
    if socket_args:
      args += socket_args
    args.append('--port=%d' % port)
    if self._join_args:
      cmd.append('%s' % " ".join(args))
    else:
      cmd.extend(args)
    if self._extra_args:
      cmd.extend(self._extra_args)
    self.command = cmd
    return self.command


class TestEntry(object):
  def __init__(self, testdir, server, client, delay, timeout, **kwargs):
    self.testdir = testdir
    self._log = multiprocessing.get_logger()
    self._config = kwargs
    self.protocol = kwargs['protocol']
    self.transport = kwargs['transport']
    self.socket = kwargs['socket']
    self.server = TestProgram('server', **self._fix_workdir(merge_dict(self._config, server)))
    self.client = TestProgram('client', **self._fix_workdir(merge_dict(self._config, client)))
    self.delay = delay
    self.timeout = timeout
    self._name = None
    # results
    self.success = None
    self.as_expected = None
    self.returncode = None
    self.expired = False

  def _fix_workdir(self, config):
    key = 'workdir'
    path = config.get(key, None)
    if not path:
      path = self.testdir
    if os.path.isabs(path):
      path = os.path.realpath(path)
    else:
      tmp  = self.testdir.decode(sys.getfilesystemencoding())
      path = path.decode(sys.getfilesystemencoding())
      path = os.path.join(tmp, path)
      path = path.encode(sys.getfilesystemencoding())
      path = os.path.realpath(path)
    config.update({key: path})
    return config

  @classmethod
  def get_name(cls, server, client, proto, trans, sock, *args):
    return '%s-%s_%s_%s-%s' % (server, client, proto, trans, sock)

  @property
  def name(self):
    if not self._name:
      self._name = self.get_name(
          self.server.name, self.client.name, self.protocol, self.transport, self.socket)
    return self._name

  @property
  def transport_name(self):
    return '%s-%s' % (self.transport, self.socket)


def test_name(server, client, protocol, transport, socket, **kwargs):
  return TestEntry.get_name(server['name'], client['name'], protocol, transport, socket)