import os
import unittest
from pyramid.tests.test_scripts import dummy


class TestPShellCommand(unittest.TestCase):
    def _getTargetClass(self):
        from pyramid.scripts.pshell import PShellCommand
        return PShellCommand

    def _makeOne(self, patch_bootstrap=True, patch_loader=True,
                 patch_args=True, patch_options=True):
        cmd = self._getTargetClass()([])

        if patch_bootstrap:
            self.bootstrap = dummy.DummyBootstrap()
            cmd.bootstrap = self.bootstrap
        if patch_loader:
            self.loader = dummy.DummyLoader()
            cmd.get_config_loader = self.loader
        if patch_args:
            class Args(object): pass
            self.args = Args()
            self.args.config_uri = '/foo/bar/myapp.ini#myapp'
            cmd.args.config_uri = self.args.config_uri
        if patch_options:
            class Options(object): pass
            self.options = Options()
            self.options.python_shell = ''
            self.options.setup = None
            self.options.list = None
            cmd.options = self.options

        # default to None to prevent side-effects from running tests in
        # unknown environments
        cmd.pystartup = None
        return cmd

    def _makeEntryPoints(self, command, shells):
        command.pkg_resources = dummy.DummyPkgResources(shells)

    def test_command_loads_default_shell(self):
        command = self._makeOne()
        shell = dummy.DummyShell()
        self._makeEntryPoints(command, {})

        command.default_runner = shell
        command.run()
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':self.bootstrap.root,
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_errors_with_unknown_shell(self):
        command = self._makeOne()
        out_calls = []

        def out(msg):
            out_calls.append(msg)

        command.out = out

        shell = dummy.DummyShell()

        self._makeEntryPoints(command, {})

        command.default_runner = shell
        command.args.python_shell = 'unknown_python_shell'
        result = command.run()
        self.assertEqual(result, 1)
        self.assertEqual(
            out_calls, ['could not find a shell named "unknown_python_shell"']
        )
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertTrue(self.bootstrap.closer.called)

    def test_command_loads_ipython(self):
        command = self._makeOne()
        shell = dummy.DummyShell()
        bad_shell = dummy.DummyShell()
        self._makeEntryPoints(
            command,
            {
                'ipython': shell,
                'bpython': bad_shell,
            }
        )

        command.args.python_shell = 'ipython'

        command.run()
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':self.bootstrap.root,
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_shell_entry_points(self):
        command = self._makeOne()
        dshell = dummy.DummyShell()

        self._makeEntryPoints(
            command,
            {
                'ipython': dshell,
                'bpython': dshell,
            }
        )

        command.default_runner = None
        shell = command.make_shell()
        self.assertEqual(shell, dshell)

    def test_shell_override(self):
        command = self._makeOne()
        ipshell = dummy.DummyShell()
        bpshell = dummy.DummyShell()
        dshell = dummy.DummyShell()

        self._makeEntryPoints(command, {})

        command.default_runner = dshell

        shell = command.make_shell()
        self.assertEqual(shell, dshell)

        command.args.python_shell = 'ipython'
        self.assertRaises(ValueError, command.make_shell)

        self._makeEntryPoints(
            command,
            {
                'ipython': ipshell,
                'bpython': bpshell,
                'python': dshell,
            }
        )

        command.args.python_shell = 'ipython'
        shell = command.make_shell()
        self.assertEqual(shell, ipshell)

        command.args.python_shell = 'bpython'
        shell = command.make_shell()
        self.assertEqual(shell, bpshell)

        command.args.python_shell = 'python'
        shell = command.make_shell()
        self.assertEqual(shell, dshell)

    def test_shell_ordering(self):
        command = self._makeOne()
        ipshell = dummy.DummyShell()
        bpshell = dummy.DummyShell()
        dshell = dummy.DummyShell()

        self._makeEntryPoints(
            command,
            {
                'ipython': ipshell,
                'bpython': bpshell,
                'python': dshell,
            }
        )

        command.default_runner = dshell

        command.preferred_shells = ['ipython', 'bpython']
        shell = command.make_shell()
        self.assertEqual(shell, ipshell)

        command.preferred_shells = ['bpython', 'python']
        shell = command.make_shell()
        self.assertEqual(shell, bpshell)

        command.preferred_shells = ['python', 'ipython']
        shell = command.make_shell()
        self.assertEqual(shell, dshell)

    def test_command_loads_custom_items(self):
        command = self._makeOne()
        model = dummy.Dummy()
        user = dummy.Dummy()
        self.loader.settings = {'pshell': {'m': model, 'User': user}}
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':self.bootstrap.root,
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'm':model,
            'User': user,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_setup(self):
        command = self._makeOne()
        def setup(env):
            env['a'] = 1
            env['root'] = 'root override'
            env['none'] = None
        self.loader.settings = {'pshell': {'setup': setup}}
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':'root override',
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'a':1,
            'none': None,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_setup_generator(self):
        command = self._makeOne()
        did_resume_after_yield = {}
        def setup(env):
            env['a'] = 1
            env['root'] = 'root override'
            env['none'] = None
            request = env['request']
            yield
            did_resume_after_yield['result'] = True
            self.assertEqual(request.dummy_attr, 1)
        self.loader.settings = {'pshell': {'setup': setup}}
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':'root override',
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'a':1,
            'none': None,
        })
        self.assertTrue(did_resume_after_yield['result'])
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_default_shell_option(self):
        command = self._makeOne()
        ipshell = dummy.DummyShell()
        dshell = dummy.DummyShell()
        self._makeEntryPoints(
            command,
            {
                'ipython': ipshell,
                'python': dshell,
            }
        )
        self.loader.settings = {'pshell': {
            'default_shell': 'bpython python\nipython'}}
        command.run()
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertTrue(dshell.called)

    def test_command_loads_check_variable_override_order(self):
        command = self._makeOne()
        model = dummy.Dummy()
        def setup(env):
            env['a'] = 1
            env['m'] = 'model override'
            env['root'] = 'root override'
        self.loader.settings = {'pshell': {'setup': setup, 'm': model}}
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':'root override',
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'a':1, 'm':'model override',
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_loads_setup_from_options(self):
        command = self._makeOne()
        def setup(env):
            env['a'] = 1
            env['root'] = 'root override'
        model = dummy.Dummy()
        self.loader.settings = {'pshell': {'setup': 'abc', 'm': model}}
        command.args.setup = setup
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':'root override',
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'a':1, 'm':model,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_custom_section_override(self):
        command = self._makeOne()
        dummy_ = dummy.Dummy()
        self.loader.settings = {'pshell': {
            'app': dummy_, 'root': dummy_, 'registry': dummy_,
            'request': dummy_}}
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':dummy_, 'root':dummy_, 'registry':dummy_, 'request':dummy_,
            'root_factory':self.bootstrap.root_factory,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_command_loads_pythonstartup(self):
        command = self._makeOne()
        command.pystartup = (
            os.path.abspath(
                os.path.join(
                    os.path.dirname(__file__),
                    'pystartup.txt')))
        shell = dummy.DummyShell()
        command.run(shell)
        self.assertEqual(self.bootstrap.a[0], '/foo/bar/myapp.ini#myapp')
        self.assertEqual(shell.env, {
            'app':self.bootstrap.app, 'root':self.bootstrap.root,
            'registry':self.bootstrap.registry,
            'request':self.bootstrap.request,
            'root_factory':self.bootstrap.root_factory,
            'foo':1,
        })
        self.assertTrue(self.bootstrap.closer.called)
        self.assertTrue(shell.help)

    def test_list_shells(self):
        command = self._makeOne()

        dshell = dummy.DummyShell()
        out_calls = []

        def out(msg):
            out_calls.append(msg)

        command.out = out

        self._makeEntryPoints(
            command,
            {
                'ipython': dshell,
                'python': dshell,
            }
        )

        command.args.list = True
        result = command.run()
        self.assertEqual(result, 0)
        self.assertEqual(out_calls, [
            'Available shells:',
            '  ipython',
            '  python',
        ])


class Test_python_shell_runner(unittest.TestCase):
    def _callFUT(self, env, help, interact):
        from pyramid.scripts.pshell import python_shell_runner
        return python_shell_runner(env, help, interact=interact)

    def test_it(self):
        interact = dummy.DummyInteractor()
        self._callFUT({'foo': 'bar'}, 'a help message', interact)
        self.assertEqual(interact.local, {'foo': 'bar'})
        self.assertTrue('a help message' in interact.banner)

class Test_main(unittest.TestCase):
    def _callFUT(self, argv):
        from pyramid.scripts.pshell import main
        return main(argv, quiet=True)

    def test_it(self):
        result = self._callFUT(['pshell'])
        self.assertEqual(result, 2)