#!/usr/bin/env python3

import inspect
import optparse
import os
import sys
import pkgutil
import textwrap
import unittest
import tempfile
from unittest import mock
from testcommon import TmpCwd, TmpPyPath

localmodule = os.path.realpath(
    os.path.join(os.path.dirname(inspect.getfile(inspect.currentframe())), '..'))
print('localmodule: ' + localmodule)
if localmodule not in sys.path:
    sys.path.insert(0, localmodule)

from fdroidserver import common
import fdroidserver.__main__


class MainTest(unittest.TestCase):
    '''this tests fdroid.py'''

    def test_COMMANDS_check(self):
        """make sure the built in sub-command defs didn't change unintentionally"""
        self.assertListEqual([x for x in fdroidserver.__main__.COMMANDS.keys()],
                             ['build',
                              'init',
                              'publish',
                              'gpgsign',
                              'update',
                              'deploy',
                              'verify',
                              'checkupdates',
                              'import',
                              'install',
                              'readmeta',
                              'rewritemeta',
                              'lint',
                              'scanner',
                              'stats',
                              'server',
                              'signindex',
                              'btlog',
                              'signatures',
                              'nightly',
                              'mirror'])

    def test_call_init(self):
        co = mock.Mock()
        with mock.patch('sys.argv', ['', 'init', '-h']):
            with mock.patch('fdroidserver.init.main', co):
                with mock.patch('sys.exit') as exit_mock:
                    fdroidserver.__main__.main()
                    # note: this is sloppy, if `init` changes
                    # this might need changing too
                    exit_mock.assert_called_once_with(0)
        co.assert_called_once_with()

    def test_call_deploy(self):
        co = mock.Mock()
        with mock.patch('sys.argv', ['', 'deploy', '-h']):
            with mock.patch('fdroidserver.server.main', co):
                with mock.patch('sys.exit') as exit_mock:
                    fdroidserver.__main__.main()
                    # note: this is sloppy, if `deploy` changes
                    # this might need changing too
                    exit_mock.assert_called_once_with(0)
        co.assert_called_once_with()

    def test_find_plugins(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy1.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        main = lambda: 'all good'"""))
            with TmpPyPath(tmpdir):
                plugins = fdroidserver.__main__.find_plugins()
                self.assertIn('testy1', plugins.keys())
                self.assertEqual(plugins['testy1']['summary'], 'ttt')
                self.assertEqual(__import__(plugins['testy1']['name'],
                                            None,
                                            None,
                                            ['testy1'])
                                 .main(),
                                 'all good')

    def test_main_plugin_lambda(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy2.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        main = lambda: print('all good')"""))
            with TmpPyPath(tmpdir):
                with mock.patch('sys.argv', ['', 'testy2']):
                    with mock.patch('sys.exit') as exit_mock:
                        fdroidserver.__main__.main()
                        exit_mock.assert_called_once_with(0)

    def test_main_plugin_def(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy3.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        def main():
                            print('all good')"""))
            with TmpPyPath(tmpdir):
                with mock.patch('sys.argv', ['', 'testy3']):
                    with mock.patch('sys.exit') as exit_mock:
                        fdroidserver.__main__.main()
                        exit_mock.assert_called_once_with(0)

    def test_main_broken_plugin(self):
        """making sure broken plugins get their exceptions through"""
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy4.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        def main():
                            raise Exception("this plugin is broken")"""))
            with TmpPyPath(tmpdir):
                with mock.patch('sys.argv', ['', 'testy4']):
                    with self.assertRaisesRegex(Exception, "this plugin is broken"):
                        fdroidserver.__main__.main()

    def test_main_malicious_plugin(self):
        """The purpose of this test is to make sure code in plugins
        doesn't get executed unintentionally.
        """
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy5.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        raise Exception("this plugin is malicious")
                        def main():
                            print("evil things")"""))
            with TmpPyPath(tmpdir):
                with mock.patch('sys.argv', ['', 'lint']):
                    with mock.patch('sys.exit') as exit_mock:
                        fdroidserver.__main__.main()
                        # note: this is sloppy, if `lint` changes
                        # this might need changing too
                        exit_mock.assert_called_once_with(0)

    def test_main_prevent_plugin_override(self):
        """making sure build-in subcommands cannot be overridden by plugins
        """
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_signatures.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        def main():
                            raise("plugin overrides don't get prevent!")"""))
            with TmpPyPath(tmpdir):
                with mock.patch('sys.argv', ['', 'signatures']):
                    with mock.patch('sys.exit') as exit_mock:
                        fdroidserver.__main__.main()
                        # note: this is sloppy, if `signatures` changes
                        # this might need changing too
                        self.assertEqual(exit_mock.call_count, 2)

    def test_preparse_plugin_lookup_bad_name(self):
        self.assertRaises(ValueError,
                          fdroidserver.__main__.preparse_plugin,
                          "some.package", "/non/existent/module/path")

    def test_preparse_plugin_lookup_bad_path(self):
        self.assertRaises(ValueError,
                          fdroidserver.__main__.preparse_plugin,
                          "fake_module_name", "/non/existent/module/path")

    def test_preparse_plugin_lookup_summary_missing(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy6.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        main = lambda: print('all good')"""))
            with TmpPyPath(tmpdir):
                p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
                module_dir = p[0][0].path
                module_name = p[0][1]
                self.assertRaises(NameError,
                                  fdroidserver.__main__.preparse_plugin,
                                  module_name, module_dir)

    def test_preparse_plugin_lookup_module_file(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            with open('fdroid_testy7.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        main = lambda: pritn('all good')"""))
            with TmpPyPath(tmpdir):
                p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
                module_path = p[0][0].path
                module_name = p[0][1]
                d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
            self.assertDictEqual(d, {'name': 'fdroid_testy7',
                                     'summary': 'ttt'})

    def test_preparse_plugin_lookup_module_dir(self):
        with tempfile.TemporaryDirectory() as tmpdir, TmpCwd(tmpdir):
            os.mkdir(os.path.join(tmpdir, 'fdroid_testy8'))
            with open('fdroid_testy8/__main__.py', 'w') as f:
                f.write(textwrap.dedent("""\
                        fdroid_summary = "ttt"
                        main = lambda: print('all good')"""))
            with open('fdroid_testy8/__init__.py', 'w') as f:
                pass
            with TmpPyPath(tmpdir):
                p = [x for x in pkgutil.iter_modules() if x[1].startswith('fdroid_')]
                module_path = p[0][0].path
                module_name = p[0][1]
                d = fdroidserver.__main__.preparse_plugin(module_name, module_path)
            self.assertDictEqual(d, {'name': 'fdroid_testy8',
                                     'summary': 'ttt'})


if __name__ == "__main__":
    os.chdir(os.path.dirname(__file__))

    parser = optparse.OptionParser()
    parser.add_option("-v", "--verbose", action="store_true", default=False,
                      help="Spew out even more information than normal")
    (common.options, args) = parser.parse_args(['--verbose'])

    newSuite = unittest.TestSuite()
    newSuite.addTest(unittest.makeSuite(MainTest))
    unittest.main(failfast=False)