#!/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__ = "A. Murat Eren"
__copyright__ = "Copyright 2016, The anvio Project"
__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']}


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 args.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())))
    parser.add_argument('--debug', default=False, action='store_true',
                        help="This program will create a temporary output directory to store all output files, and will\
                              clean after itself by deleting it. The use of this flag will make sure the temporary output\
                              files do not go anywhere so you can play with them further..")

    args = parser.parse_args()

    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)
