#!/usr/bin/python
# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os

import common
from autotest_lib.client.common_lib import control_data


def autoserv_run_job_command(autoserv_directory, machines,
                             results_directory=None, extra_args=[], job=None,
                             queue_entry=None, verbose=True,
                             write_pidfile=True):
    """
    Construct an autoserv command from a job or host queue entry.

    @param autoserv_directory: Absolute path to directory containing the
                               autoserv executable.
    @param machines: A machine or comma separated list of machines to run
                     job on. Leave as None or empty string for hostless job
                     (String).
    @param results_directory: Absolute path to directory in which to deposit
                             results.
    @param extra_args: Additional arguments to pass to autoserv
                       (List of Strings).
    @param job: Job object. If supplied, -u owner, -l name, and --test-retry,
                and -c or -s (client or server) parameters will be added.
    @param queue_entry: HostQueueEntry object. If supplied and no job
                        was supplied, this will be used to lookup the job.
    @param verbose: Boolean (default: True) for autoserv verbosity.
    @param write_pidfile: Boolean (default: True) for whether autoserv should
                          write a pidfile.
    @returns The autoserv command line as a list of executable + parameters.
    """
    command = [os.path.join(autoserv_directory, 'autoserv')]

    if write_pidfile:
        command.append('-p')

    if results_directory:
        command += ['-r', results_directory]

    if machines:
        command += ['-m', machines]

    if job or queue_entry:
        if not job:
            job = queue_entry.job

        owner = getattr(job, 'owner', None)
        name = getattr(job, 'name', None)
        test_retry = getattr(job, 'test_retry', None)
        control_type = getattr(job, 'control_type', None)


        if owner:
            command += ['-u', owner]
        if name:
            command += ['-l', name]
        if test_retry:
            command += ['--test-retry='+str(test_retry)]
        if control_type is not None: # still want to enter if control_type==0
            control_type_value = control_data.CONTROL_TYPE.get_value(
                    control_type)
            if control_type_value == control_data.CONTROL_TYPE.CLIENT:
                command.append('-c')
            elif control_type_value == control_data.CONTROL_TYPE.SERVER:
                command.append('-s')

    if verbose:
        command.append('--verbose')

    return command + extra_args