import os
import shutil
import tempfile
import unittest
from paste.deploy import loadapp
from webob import Request
from waeup.cas.server import CASServer


class CASServerTests(unittest.TestCase):

    def setUp(self):
        # Create a new location where tempfiles are created.  This way
        # also temporary dirs of local CASServers can be removed on
        # tear-down.
        self._new_tmpdir = tempfile.mkdtemp()
        self._old_tmpdir = tempfile.tempdir
        tempfile.tempdir = self._new_tmpdir
        self.workdir = os.path.join(self._new_tmpdir, 'home')
        self.db_path = os.path.join(self.workdir, 'mycas.db')
        self.paste_conf1 = os.path.join(
            os.path.dirname(__file__), 'sample1.ini')
        self.paste_conf2 = os.path.join(
            os.path.dirname(__file__), 'sample2.ini')

    def tearDown(self):
        # remove local tempfile and reset old tempdir setting
        if os.path.isdir(self._new_tmpdir):
            shutil.rmtree(self._new_tmpdir)
        tempfile.tempdir = self._old_tmpdir

    def test_paste_deploy_loader(self):
        # we can load the CAS server via paste.deploy plugin
        app = loadapp('config:%s' % self.paste_conf1)
        assert isinstance(app, CASServer)
        assert hasattr(app, 'db_path')
        assert app.db_path is not None

    def test_paste_deploy_options(self):
        # we can set CAS server-related options via paste.deploy config
        app = loadapp('config:%s' % self.paste_conf2)
        assert isinstance(app, CASServer)
        assert app.db_path == '/a/path/to/cas.db'

    def test_init(self):
        # we get a db dir set automatically
        app = CASServer()
        assert hasattr(app, 'db_path')
        assert app.db_path is not None
        assert os.path.exists(os.path.dirname(app.db_path))

    def test_init_explicit_db_path(self):
        # we can set a db_path explicitly
        app = CASServer(db_path=self.db_path)
        assert hasattr(app, 'db_path')
        assert app.db_path == self.db_path

    def test_call_root(self):
        # the CAS protocol requires no root
        app = CASServer()
        req = Request.blank('http://localhost/')
        resp = app(req)
        assert resp.status == '404 Not Found'

    def test_first_time_login(self):
        # we can get a login page
        app = CASServer()
        req = Request.blank('http://localhost/login')
        resp = app(req)
        assert resp.status == '200 OK'

    def test_validate(self):
        # we can access a validation page
        app = CASServer()
        req = Request.blank('http://localhost/validate')
        resp = app(req)
        assert resp.status == '501 Not Implemented'

    def test_logout(self):
        # we can access a logout page
        app = CASServer()
        req = Request.blank('http://localhost/logout')
        resp = app(req)
        assert resp.status == '501 Not Implemented'

    def test_login_simple(self):
        # a simple login with no service will result in login screen
        # (2.1.1#service of protocol specs)
        app = CASServer()
        req = Request.blank('http://localhost/login')
        resp = app(req)
        assert resp.status == '200 OK'
        assert resp.content_type == 'text/html'
        assert b'<form ' in resp.body