#!/usr/bin/env python

# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

import os
import textwrap

from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.backends import default_backend
import testtools

import zuul.configloader
from tests.base import AnsibleZuulTestCase, ZuulTestCase, FIXTURE_DIR


class TestMultipleTenants(AnsibleZuulTestCase):
    # A temporary class to hold new tests while others are disabled

    tenant_config_file = 'config/multi-tenant/main.yaml'

    def test_multiple_tenants(self):
        A = self.fake_gerrit.addFakeChange('org/project1', 'master', 'A')
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(self.getJobFromHistory('project1-test1').result,
                         'SUCCESS')
        self.assertEqual(self.getJobFromHistory('python27').result,
                         'SUCCESS')
        self.assertEqual(A.data['status'], 'MERGED')
        self.assertEqual(A.reported, 2,
                         "A should report start and success")
        self.assertIn('tenant-one-gate', A.messages[1],
                      "A should transit tenant-one gate")
        self.assertNotIn('tenant-two-gate', A.messages[1],
                         "A should *not* transit tenant-two gate")

        B = self.fake_gerrit.addFakeChange('org/project2', 'master', 'B')
        B.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(B.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(self.getJobFromHistory('python27',
                                                'org/project2').result,
                         'SUCCESS')
        self.assertEqual(self.getJobFromHistory('project2-test1').result,
                         'SUCCESS')
        self.assertEqual(B.data['status'], 'MERGED')
        self.assertEqual(B.reported, 2,
                         "B should report start and success")
        self.assertIn('tenant-two-gate', B.messages[1],
                      "B should transit tenant-two gate")
        self.assertNotIn('tenant-one-gate', B.messages[1],
                         "B should *not* transit tenant-one gate")

        self.assertEqual(A.reported, 2, "Activity in tenant two should"
                         "not affect tenant one")


class TestInRepoConfig(ZuulTestCase):
    # A temporary class to hold new tests while others are disabled

    tenant_config_file = 'config/in-repo/main.yaml'

    def test_in_repo_config(self):
        A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(self.getJobFromHistory('project-test1').result,
                         'SUCCESS')
        self.assertEqual(A.data['status'], 'MERGED')
        self.assertEqual(A.reported, 2,
                         "A should report start and success")
        self.assertIn('tenant-one-gate', A.messages[1],
                      "A should transit tenant-one gate")

    def test_dynamic_config(self):
        in_repo_conf = textwrap.dedent(
            """
            - job:
                name: project-test2

            - project:
                name: org/project
                tenant-one-gate:
                  jobs:
                    - project-test2
            """)

        in_repo_playbook = textwrap.dedent(
            """
            - hosts: all
              tasks: []
            """)

        file_dict = {'.zuul.yaml': in_repo_conf,
                     'playbooks/project-test2.yaml': in_repo_playbook}
        A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A',
                                           files=file_dict)
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(A.data['status'], 'MERGED')
        self.assertEqual(A.reported, 2,
                         "A should report start and success")
        self.assertIn('tenant-one-gate', A.messages[1],
                      "A should transit tenant-one gate")
        self.assertHistory([
            dict(name='project-test2', result='SUCCESS', changes='1,1')])

        self.fake_gerrit.addEvent(A.getChangeMergedEvent())
        self.waitUntilSettled()

        # Now that the config change is landed, it should be live for
        # subsequent changes.
        B = self.fake_gerrit.addFakeChange('org/project', 'master', 'B')
        B.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(B.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(self.getJobFromHistory('project-test2').result,
                         'SUCCESS')
        self.assertHistory([
            dict(name='project-test2', result='SUCCESS', changes='1,1'),
            dict(name='project-test2', result='SUCCESS', changes='2,1')])

    def test_in_repo_branch(self):
        in_repo_conf = textwrap.dedent(
            """
            - job:
                name: project-test2

            - project:
                name: org/project
                tenant-one-gate:
                  jobs:
                    - project-test2
            """)

        in_repo_playbook = textwrap.dedent(
            """
            - hosts: all
              tasks: []
            """)

        file_dict = {'.zuul.yaml': in_repo_conf,
                     'playbooks/project-test2.yaml': in_repo_playbook}
        self.create_branch('org/project', 'stable')
        A = self.fake_gerrit.addFakeChange('org/project', 'stable', 'A',
                                           files=file_dict)
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertEqual(A.data['status'], 'MERGED')
        self.assertEqual(A.reported, 2,
                         "A should report start and success")
        self.assertIn('tenant-one-gate', A.messages[1],
                      "A should transit tenant-one gate")
        self.assertHistory([
            dict(name='project-test2', result='SUCCESS', changes='1,1')])
        self.fake_gerrit.addEvent(A.getChangeMergedEvent())
        self.waitUntilSettled()

        # The config change should not affect master.
        B = self.fake_gerrit.addFakeChange('org/project', 'master', 'B')
        B.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(B.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertHistory([
            dict(name='project-test2', result='SUCCESS', changes='1,1'),
            dict(name='project-test1', result='SUCCESS', changes='2,1')])

        # The config change should be live for further changes on
        # stable.
        C = self.fake_gerrit.addFakeChange('org/project', 'stable', 'C')
        C.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(C.addApproval('approved', 1))
        self.waitUntilSettled()
        self.assertHistory([
            dict(name='project-test2', result='SUCCESS', changes='1,1'),
            dict(name='project-test1', result='SUCCESS', changes='2,1'),
            dict(name='project-test2', result='SUCCESS', changes='3,1')])

    def test_untrusted_syntax_error(self):
        in_repo_conf = textwrap.dedent(
            """
            - job:
                name: project-test2
                foo: error
            """)

        file_dict = {'.zuul.yaml': in_repo_conf}
        A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A',
                                           files=file_dict)
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()

        self.assertEqual(A.data['status'], 'NEW')
        self.assertEqual(A.reported, 2,
                         "A should report start and failure")
        self.assertIn('syntax error', A.messages[1],
                      "A should have a syntax error reported")

    def test_trusted_syntax_error(self):
        in_repo_conf = textwrap.dedent(
            """
            - job:
                name: project-test2
                foo: error
            """)

        file_dict = {'zuul.yaml': in_repo_conf}
        A = self.fake_gerrit.addFakeChange('common-config', 'master', 'A',
                                           files=file_dict)
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()

        self.assertEqual(A.data['status'], 'NEW')
        self.assertEqual(A.reported, 2,
                         "A should report start and failure")
        self.assertIn('syntax error', A.messages[1],
                      "A should have a syntax error reported")

    def test_untrusted_yaml_error(self):
        in_repo_conf = textwrap.dedent(
            """
            - job:
            foo: error
            """)

        file_dict = {'.zuul.yaml': in_repo_conf}
        A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A',
                                           files=file_dict)
        A.addApproval('code-review', 2)
        self.fake_gerrit.addEvent(A.addApproval('approved', 1))
        self.waitUntilSettled()

        self.assertEqual(A.data['status'], 'NEW')
        self.assertEqual(A.reported, 2,
                         "A should report start and failure")
        self.assertIn('syntax error', A.messages[1],
                      "A should have a syntax error reported")


class TestAnsible(AnsibleZuulTestCase):
    # A temporary class to hold new tests while others are disabled

    tenant_config_file = 'config/ansible/main.yaml'

    def test_playbook(self):
        A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
        self.fake_gerrit.addEvent(A.getPatchsetCreatedEvent(1))
        self.waitUntilSettled()
        build = self.getJobFromHistory('timeout')
        self.assertEqual(build.result, 'ABORTED')
        build = self.getJobFromHistory('faillocal')
        self.assertEqual(build.result, 'FAILURE')
        build = self.getJobFromHistory('check-vars')
        self.assertEqual(build.result, 'SUCCESS')
        build = self.getJobFromHistory('python27')
        self.assertEqual(build.result, 'SUCCESS')
        flag_path = os.path.join(self.test_root, build.uuid + '.flag')
        self.assertTrue(os.path.exists(flag_path))
        copied_path = os.path.join(self.test_root, build.uuid +
                                   '.copied')
        self.assertTrue(os.path.exists(copied_path))
        failed_path = os.path.join(self.test_root, build.uuid +
                                   '.failed')
        self.assertFalse(os.path.exists(failed_path))
        pre_flag_path = os.path.join(self.test_root, build.uuid +
                                     '.pre.flag')
        self.assertTrue(os.path.exists(pre_flag_path))
        post_flag_path = os.path.join(self.test_root, build.uuid +
                                      '.post.flag')
        self.assertTrue(os.path.exists(post_flag_path))
        bare_role_flag_path = os.path.join(self.test_root,
                                           build.uuid + '.bare-role.flag')
        self.assertTrue(os.path.exists(bare_role_flag_path))


class TestBrokenConfig(ZuulTestCase):
    # Test that we get an appropriate syntax error if we start with a
    # broken config.

    tenant_config_file = 'config/broken/main.yaml'

    def setUp(self):
        with testtools.ExpectedException(
                zuul.configloader.ConfigurationSyntaxError,
                "\nZuul encountered a syntax error"):
            super(TestBrokenConfig, self).setUp()

    def test_broken_config_on_startup(self):
        pass


class TestProjectKeys(ZuulTestCase):
    # Test that we can generate project keys

    # Normally the test infrastructure copies a static key in place
    # for each project before starting tests.  This saves time because
    # Zuul's automatic key-generation on startup can be slow.  To make
    # sure we exercise that code, in this test we allow Zuul to create
    # keys for the project on startup.
    create_project_keys = True
    tenant_config_file = 'config/in-repo/main.yaml'

    def test_key_generation(self):
        key_root = os.path.join(self.state_root, 'keys')
        private_key_file = os.path.join(key_root, 'gerrit/org/project.pem')
        # Make sure that a proper key was created on startup
        with open(private_key_file, "rb") as f:
            private_key = serialization.load_pem_private_key(
                f.read(),
                password=None,
                backend=default_backend()
            )

        with open(os.path.join(FIXTURE_DIR, 'private.pem')) as i:
            fixture_private_key = i.read()

        # Make sure that we didn't just end up with the static fixture
        # key
        self.assertNotEqual(fixture_private_key, private_key)

        # Make sure it's the right length
        self.assertEqual(4096, private_key.key_size)