#!/usr/bin/env python

from __future__ import print_function

import argparse
import os
import subprocess
import sys

from tools import cov


class Runner(object):

    def __init__(self):
        self._verbose = False
        self._repo_dir = os.path.abspath(os.path.dirname(__file__))
        self._path_to_cov = os.path.join(self._repo_dir, 'tools', 'cov.py')
        self._path_to_runner = os.path.join(self._repo_dir, 'typ', 'runner.py')
        self._python = sys.executable

    def main(self, argv):
        parser = argparse.ArgumentParser(prog='run')
        parser.add_argument('-v', '--verbose', action='store_true')
        subps = parser.add_subparsers()

        subp = subps.add_parser('clean', help='Remove any local files.')
        subp.set_defaults(func=self.run_clean)

        subp = subps.add_parser('coverage',
                                help='Run the tests and report code coverage.')
        subp.set_defaults(func=self.run_coverage)
        cov.add_arguments(subp)

        subp = subps.add_parser('help',
                                help='Get help on a subcommand.')
        subp.add_argument(nargs='?', action='store', dest='subcommand',
                        help='The command to get help for.')
        subp.set_defaults(func=self.run_help)

        subp = subps.add_parser('lint',
                                help='run lint over the source')
        subp.set_defaults(func=self.run_lint)

        subp = subps.add_parser('tests',
                                help='run the tests')
        subp.set_defaults(func=self.run_tests)

        args = parser.parse_args(argv)

        self._verbose = args.verbose
        args.func(args)

    def call(self, *args, **kwargs):
        if self._verbose:
            print(' '.join(args[0]))
        ret = subprocess.call(*args, **kwargs)
        if ret != 0:
            sys.exit(ret)

    def run_clean(self, _args):
        self.call(['git', 'clean', '-fxd'])

    def run_coverage(self, args):
        if not args.path:
            args.path = [self._repo_dir]
        if not args.source:
            args.source = [os.path.join(self._repo_dir, 'typ')]
        argv = cov.argv_from_args(args)
        cov_args = [self._path_to_runner, '-j', '1']
        self.call([self._python, self._path_to_cov] + argv + cov_args)

    def run_help(self, args):
        if args.subcommand:
            self.main([args.subcommand, '--help'])
        self.main(['--help'])

    def run_lint(self, _args):
        self.call('pylint --rcfile=pylintrc */*.py */*/*.py', shell=True)

    def run_tests(self, _args):
        # Test running the typ module directly if it is in sys.path.
        self.call([
            self._python, '-m', 'typ',
            'typ.tests.main_test.TestMain.test_basic',
        ])

        # Testing running the runner directly if nothing is in sys.path.
        home_dir = os.environ['HOME']
        self.call([self._python, self._path_to_runner,
                   'typ.tests.main_test.TestMain.test_basic'], cwd=home_dir)

        # Run the remaining tests.
        self.call([self._python, self._path_to_runner])


if __name__ == '__main__':
    sys.exit(Runner().main(sys.argv[1:]))