#!/opt/anaconda1anaconda2anaconda3/bin/python
# -*- coding: utf-8

import os
import sys
import glob
import shutil
import signal
import itertools
import subprocess

import anvio
import anvio.filesnpaths as filesnpaths

from anvio.errors import FilesNPathsError, ConfigError


__author__ = "Developers of anvi'o (see AUTHORS.txt)"
__copyright__ = "Copyleft 2015-2018, the Meren Lab (http://merenlab.org/)"
__credits__ = []
__license__ = "GPL 3.0"
__version__ = anvio.__version__
__maintainer__ = "A. Murat Eren"
__email__ = "a.murat.eren@gmail.com"


tests = {'mini': ['run_mini_test.sh'],
         'full': ['run_all_tests.sh', 'run_pangenome_tests.sh'],
         'pangenomics': ['run_pangenome_tests.sh'],
         'alons-classifier': ['run_alons_classifier_tests.sh']}


def __catch_sig(signum, frame):
    """We need to press CTRL+C to kill the server that is run by this script in a\
       subprocess, but then we don't want the script itself to catch it. This is\
       a workaround to avoid that."""
    pass


def main(args):
    if args.suite not in tests:
        raise ConfigError("Well, the test suite '%s' is not something anvi'o knows about :/ Here is a list\
                            of tests available if you would like to try again: %s" % (args.suite, ', '.join(list(tests.keys()))))

    tests_dir_path = os.path.abspath(os.path.join(os.path.dirname(anvio.__file__), '../tests'))

    test_files_found = [os.path.basename(p) for p in glob.glob(os.path.join(tests_dir_path, '*.sh'))]

    for test in list(itertools.chain(*list(tests.values()))):
        if test not in test_files_found:
            raise FilesNPathsError("Anvi'o failed to locate the test file for '%s' ('%s')... What a\
                                     terrible start :( (it was looking for it under '%s')." \
                                                % (test, tests[test], tests_dir_path))

    temporary_output_dir = filesnpaths.get_temp_directory_path()

    os.chdir(tests_dir_path)

    try:
        for test in tests[args.suite]:
            if subprocess.call('./%s %s' % (test, temporary_output_dir), shell=True) != 0:
                raise ConfigError("It seems something went wrong while running your tests :/ Anvi'o hopes that the reason is clear\
                                   from the lines above.")
    except KeyboardInterrupt:
        pass

    print()
    if anvio.DEBUG:
        print("Anvi'o's self-test is done, and the temporary output files are still here: %s\n" % temporary_output_dir)
    else:
        shutil.rmtree(temporary_output_dir)
        print("Anvi'o's self-test is done, and the temporary output files are cleaned.\n")


if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser(description="A script for anvi'o to test itself")

    parser.add_argument('--suite', default='full',
                        help="Suite of tests to execute. By default this program will execute a full suite of example anvi'o\
                              commands to ensure your installation is ready to run all scenarios anvi'o developers could\
                              think of. Alternatively you can choose a specific test to run. Here is a full list of available\
                              options: %s." % ', '.join(list(tests.keys())))

    args = anvio.get_args(parser)

    try:
        signal.signal(signal.SIGINT, __catch_sig)
        main(args)
    except FilesNPathsError as e:
        print(e)
        sys.exit(-1)
    except ConfigError as e:
        print(e)
        sys.exit(-2)
