#!/usr/bin/python

# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
"""
Buildbot steps for testing dart2js with --dump-info turned on
"""
import os
import shutil
import sys
import bot
import bot_utils

utils = bot_utils.GetUtils()
HOST_OS = utils.GuessOS()


def DumpConfig(name, is_buildbot):
    """Returns info for the current buildbot.
  We only run this bot on linux, so all of this is just hard coded.
  """
    return bot.BuildInfo('none', 'none', 'release', 'linux')


def Run(args):
    print "Running: %s" % ' '.join(args)
    sys.stdout.flush()
    bot.RunProcess(args)


def DumpSteps(build_info):
    build_root = utils.GetBuildRoot(HOST_OS, mode='release', arch='ia32')
    compilations_dir = os.path.join(bot_utils.DART_DIR, build_root,
                                    'generated_compilations')
    tests = ['html', 'samples']

    with bot.BuildStep('Cleaning out old compilations'):
        print "Cleaning out %s" % compilations_dir
        shutil.rmtree(compilations_dir, ignore_errors=True)

    with utils.TempDir() as temp_dir:
        normal_compilations = os.path.join(temp_dir, 'normal')
        dump_compilations = os.path.join(temp_dir, 'dump')
        normal_compilation_command = [
            sys.executable, './tools/test.py', '--arch=ia32',
            '--mode=%s' % build_info.mode, '-cdart2js', '-rnone', '--time',
            '--use-sdk', '--report', '--progress=buildbot', '-v'
        ] + tests
        with bot.BuildStep('Compiling without dump info'):
            Run(normal_compilation_command)
            pass

        with bot.BuildStep('Store normal compilation artifacts'):
            args = ['mv', compilations_dir, normal_compilations]
            Run(args)

        with bot.BuildStep('Compiling with dump info'):
            args = normal_compilation_command + [
                '--dart2js-options=--dump-info'
            ]
            Run(args)

        with bot.BuildStep('Store normal compilation artifacts'):
            args = ['mv', compilations_dir, dump_compilations]
            Run(args)

        with bot.BuildStep('Compare outputs'):
            args = [
                'diff', '-rq', '-x', '*\.json', normal_compilations,
                dump_compilations
            ]
            # Diff will return non zero and we will throw if there are any differences
            Run(args)

        with bot.BuildStep('Validate dump files'):
            # Do whatever you like :-), files are in dump_compilations
            pass


if __name__ == '__main__':
    bot.RunBot(DumpConfig, DumpSteps)