# Copyright (C) 2021 The Android Open Source Project
#
# 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.

"""Unittests for the git_superproject.py module."""

import json
import os
import platform
import tempfile
import unittest
from unittest import mock

import git_superproject
import git_trace2_event_log
import manifest_xml
from test_manifest_xml import sort_attributes


class SuperprojectTestCase(unittest.TestCase):
  """TestCase for the Superproject module."""

  PARENT_SID_KEY = 'GIT_TRACE2_PARENT_SID'
  PARENT_SID_VALUE = 'parent_sid'
  SELF_SID_REGEX = r'repo-\d+T\d+Z-.*'
  FULL_SID_REGEX = r'^%s/%s' % (PARENT_SID_VALUE, SELF_SID_REGEX)

  def setUp(self):
    """Set up superproject every time."""
    self.tempdirobj = tempfile.TemporaryDirectory(prefix='repo_tests')
    self.tempdir = self.tempdirobj.name
    self.repodir = os.path.join(self.tempdir, '.repo')
    self.manifest_file = os.path.join(
        self.repodir, manifest_xml.MANIFEST_FILE_NAME)
    os.mkdir(self.repodir)
    self.platform = platform.system().lower()

    # By default we initialize with the expected case where
    # repo launches us (so GIT_TRACE2_PARENT_SID is set).
    env = {
        self.PARENT_SID_KEY: self.PARENT_SID_VALUE,
    }
    self.git_event_log = git_trace2_event_log.EventLog(env=env)

    # The manifest parsing really wants a git repo currently.
    gitdir = os.path.join(self.repodir, 'manifests.git')
    os.mkdir(gitdir)
    with open(os.path.join(gitdir, 'config'), 'w') as fp:
      fp.write("""[remote "origin"]
        url = https://localhost:0/manifest
""")

    manifest = self.getXmlManifest("""
<manifest>
  <remote name="default-remote" fetch="http://localhost" />
  <default remote="default-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
  <project path="art" name="platform/art" groups="notdefault,platform-""" + self.platform + """
  " /></manifest>
""")
    self._superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('default-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')

  def tearDown(self):
    """Tear down superproject every time."""
    self.tempdirobj.cleanup()

  def getXmlManifest(self, data):
    """Helper to initialize a manifest for testing."""
    with open(self.manifest_file, 'w') as fp:
      fp.write(data)
    return manifest_xml.XmlManifest(self.repodir, self.manifest_file)

  def verifyCommonKeys(self, log_entry, expected_event_name, full_sid=True):
    """Helper function to verify common event log keys."""
    self.assertIn('event', log_entry)
    self.assertIn('sid', log_entry)
    self.assertIn('thread', log_entry)
    self.assertIn('time', log_entry)

    # Do basic data format validation.
    self.assertEqual(expected_event_name, log_entry['event'])
    if full_sid:
      self.assertRegex(log_entry['sid'], self.FULL_SID_REGEX)
    else:
      self.assertRegex(log_entry['sid'], self.SELF_SID_REGEX)
    self.assertRegex(log_entry['time'], r'^\d+-\d+-\d+T\d+:\d+:\d+\.\d+Z$')

  def readLog(self, log_path):
    """Helper function to read log data into a list."""
    log_data = []
    with open(log_path, mode='rb') as f:
      for line in f:
        log_data.append(json.loads(line))
    return log_data

  def verifyErrorEvent(self):
    """Helper to verify that error event is written."""

    with tempfile.TemporaryDirectory(prefix='event_log_tests') as tempdir:
      log_path = self.git_event_log.Write(path=tempdir)
      self.log_data = self.readLog(log_path)

    self.assertEqual(len(self.log_data), 2)
    error_event = self.log_data[1]
    self.verifyCommonKeys(self.log_data[0], expected_event_name='version')
    self.verifyCommonKeys(error_event, expected_event_name='error')
    # Check for 'error' event specific fields.
    self.assertIn('msg', error_event)
    self.assertIn('fmt', error_event)

  def test_superproject_get_superproject_no_superproject(self):
    """Test with no url."""
    manifest = self.getXmlManifest("""
<manifest>
</manifest>
""")
    self.assertIsNone(manifest.superproject)

  def test_superproject_get_superproject_invalid_url(self):
    """Test with an invalid url."""
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="test-remote" fetch="localhost" />
  <default remote="test-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
</manifest>
""")
    superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('test-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')
    sync_result = superproject.Sync(self.git_event_log)
    self.assertFalse(sync_result.success)
    self.assertTrue(sync_result.fatal)

  def test_superproject_get_superproject_invalid_branch(self):
    """Test with an invalid branch."""
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="test-remote" fetch="localhost" />
  <default remote="test-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
</manifest>
""")
    self._superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('test-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')
    with mock.patch.object(self._superproject, '_branch', 'junk'):
      sync_result = self._superproject.Sync(self.git_event_log)
      self.assertFalse(sync_result.success)
      self.assertTrue(sync_result.fatal)
      self.verifyErrorEvent()

  def test_superproject_get_superproject_mock_init(self):
    """Test with _Init failing."""
    with mock.patch.object(self._superproject, '_Init', return_value=False):
      sync_result = self._superproject.Sync(self.git_event_log)
      self.assertFalse(sync_result.success)
      self.assertTrue(sync_result.fatal)

  def test_superproject_get_superproject_mock_fetch(self):
    """Test with _Fetch failing."""
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      os.mkdir(self._superproject._superproject_path)
      with mock.patch.object(self._superproject, '_Fetch', return_value=False):
        sync_result = self._superproject.Sync(self.git_event_log)
        self.assertFalse(sync_result.success)
        self.assertTrue(sync_result.fatal)

  def test_superproject_get_all_project_commit_ids_mock_ls_tree(self):
    """Test with LsTree being a mock."""
    data = ('120000 blob 158258bdf146f159218e2b90f8b699c4d85b5804\tAndroid.bp\x00'
            '160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00'
            '160000 commit e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06\tbootable/recovery\x00'
            '120000 blob acc2cbdf438f9d2141f0ae424cec1d8fc4b5d97f\tbootstrap.bash\x00'
            '160000 commit ade9b7a0d874e25fff4bf2552488825c6f111928\tbuild/bazel\x00')
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      with mock.patch.object(self._superproject, '_Fetch', return_value=True):
        with mock.patch.object(self._superproject, '_LsTree', return_value=data):
          commit_ids_result = self._superproject._GetAllProjectsCommitIds()
          self.assertEqual(commit_ids_result.commit_ids, {
              'art': '2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea',
              'bootable/recovery': 'e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06',
              'build/bazel': 'ade9b7a0d874e25fff4bf2552488825c6f111928'
          })
          self.assertFalse(commit_ids_result.fatal)

  def test_superproject_write_manifest_file(self):
    """Test with writing manifest to a file after setting revisionId."""
    self.assertEqual(len(self._superproject._manifest.projects), 1)
    project = self._superproject._manifest.projects[0]
    project.SetRevisionId('ABCDEF')
    # Create temporary directory so that it can write the file.
    os.mkdir(self._superproject._superproject_path)
    manifest_path = self._superproject._WriteManifestFile()
    self.assertIsNotNone(manifest_path)
    with open(manifest_path, 'r') as fp:
      manifest_xml_data = fp.read()
    self.assertEqual(
        sort_attributes(manifest_xml_data),
        '<?xml version="1.0" ?><manifest>'
        '<remote fetch="http://localhost" name="default-remote"/>'
        '<default remote="default-remote" revision="refs/heads/main"/>'
        '<project groups="notdefault,platform-' + self.platform + '" '
        'name="platform/art" path="art" revision="ABCDEF" upstream="refs/heads/main"/>'
        '<superproject name="superproject"/>'
        '</manifest>')

  def test_superproject_update_project_revision_id(self):
    """Test with LsTree being a mock."""
    self.assertEqual(len(self._superproject._manifest.projects), 1)
    projects = self._superproject._manifest.projects
    data = ('160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00'
            '160000 commit e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06\tbootable/recovery\x00')
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      with mock.patch.object(self._superproject, '_Fetch', return_value=True):
        with mock.patch.object(self._superproject,
                               '_LsTree',
                               return_value=data):
          # Create temporary directory so that it can write the file.
          os.mkdir(self._superproject._superproject_path)
          update_result = self._superproject.UpdateProjectsRevisionId(projects, self.git_event_log)
          self.assertIsNotNone(update_result.manifest_path)
          self.assertFalse(update_result.fatal)
          with open(update_result.manifest_path, 'r') as fp:
            manifest_xml_data = fp.read()
          self.assertEqual(
              sort_attributes(manifest_xml_data),
              '<?xml version="1.0" ?><manifest>'
              '<remote fetch="http://localhost" name="default-remote"/>'
              '<default remote="default-remote" revision="refs/heads/main"/>'
              '<project groups="notdefault,platform-' + self.platform + '" '
              'name="platform/art" path="art" '
              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" upstream="refs/heads/main"/>'
              '<superproject name="superproject"/>'
              '</manifest>')

  def test_superproject_update_project_revision_id_no_superproject_tag(self):
    """Test update of commit ids of a manifest without superproject tag."""
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="default-remote" fetch="http://localhost" />
  <default remote="default-remote" revision="refs/heads/main" />
  <project name="test-name"/>
</manifest>
""")
    self.maxDiff = None
    self.assertIsNone(manifest.superproject)
    self.assertEqual(
        sort_attributes(manifest.ToXml().toxml()),
        '<?xml version="1.0" ?><manifest>'
        '<remote fetch="http://localhost" name="default-remote"/>'
        '<default remote="default-remote" revision="refs/heads/main"/>'
        '<project name="test-name"/>'
        '</manifest>')

  def test_superproject_update_project_revision_id_from_local_manifest_group(self):
    """Test update of commit ids of a manifest that have local manifest no superproject group."""
    local_group = manifest_xml.LOCAL_MANIFEST_GROUP_PREFIX + ':local'
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="default-remote" fetch="http://localhost" />
  <remote name="goog" fetch="http://localhost2" />
  <default remote="default-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
  <project path="vendor/x" name="platform/vendor/x" remote="goog"
           groups=\"""" + local_group + """
         " revision="master-with-vendor" clone-depth="1" />
  <project path="art" name="platform/art" groups="notdefault,platform-""" + self.platform + """
  " /></manifest>
""")
    self.maxDiff = None
    self._superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('default-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')
    self.assertEqual(len(self._superproject._manifest.projects), 2)
    projects = self._superproject._manifest.projects
    data = ('160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00')
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      with mock.patch.object(self._superproject, '_Fetch', return_value=True):
        with mock.patch.object(self._superproject,
                               '_LsTree',
                               return_value=data):
          # Create temporary directory so that it can write the file.
          os.mkdir(self._superproject._superproject_path)
          update_result = self._superproject.UpdateProjectsRevisionId(projects, self.git_event_log)
          self.assertIsNotNone(update_result.manifest_path)
          self.assertFalse(update_result.fatal)
          with open(update_result.manifest_path, 'r') as fp:
            manifest_xml_data = fp.read()
          # Verify platform/vendor/x's project revision hasn't changed.
          self.assertEqual(
              sort_attributes(manifest_xml_data),
              '<?xml version="1.0" ?><manifest>'
              '<remote fetch="http://localhost" name="default-remote"/>'
              '<remote fetch="http://localhost2" name="goog"/>'
              '<default remote="default-remote" revision="refs/heads/main"/>'
              '<project groups="notdefault,platform-' + self.platform + '" '
              'name="platform/art" path="art" '
              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" upstream="refs/heads/main"/>'
              '<superproject name="superproject"/>'
              '</manifest>')

  def test_superproject_update_project_revision_id_with_pinned_manifest(self):
    """Test update of commit ids of a pinned manifest."""
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="default-remote" fetch="http://localhost" />
  <default remote="default-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
  <project path="vendor/x" name="platform/vendor/x" revision="" />
  <project path="vendor/y" name="platform/vendor/y"
           revision="52d3c9f7c107839ece2319d077de0cd922aa9d8f" />
  <project path="art" name="platform/art" groups="notdefault,platform-""" + self.platform + """
  " /></manifest>
""")
    self.maxDiff = None
    self._superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('default-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')
    self.assertEqual(len(self._superproject._manifest.projects), 3)
    projects = self._superproject._manifest.projects
    data = ('160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00'
            '160000 commit e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06\tvendor/x\x00')
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      with mock.patch.object(self._superproject, '_Fetch', return_value=True):
        with mock.patch.object(self._superproject,
                               '_LsTree',
                               return_value=data):
          # Create temporary directory so that it can write the file.
          os.mkdir(self._superproject._superproject_path)
          update_result = self._superproject.UpdateProjectsRevisionId(projects, self.git_event_log)
          self.assertIsNotNone(update_result.manifest_path)
          self.assertFalse(update_result.fatal)
          with open(update_result.manifest_path, 'r') as fp:
            manifest_xml_data = fp.read()
          # Verify platform/vendor/x's project revision hasn't changed.
          self.assertEqual(
              sort_attributes(manifest_xml_data),
              '<?xml version="1.0" ?><manifest>'
              '<remote fetch="http://localhost" name="default-remote"/>'
              '<default remote="default-remote" revision="refs/heads/main"/>'
              '<project groups="notdefault,platform-' + self.platform + '" '
              'name="platform/art" path="art" '
              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" upstream="refs/heads/main"/>'
              '<project name="platform/vendor/x" path="vendor/x" '
              'revision="e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06" upstream="refs/heads/main"/>'
              '<project name="platform/vendor/y" path="vendor/y" '
              'revision="52d3c9f7c107839ece2319d077de0cd922aa9d8f"/>'
              '<superproject name="superproject"/>'
              '</manifest>')

  def test_Fetch(self):
    manifest = self.getXmlManifest("""
<manifest>
  <remote name="default-remote" fetch="http://localhost" />
  <default remote="default-remote" revision="refs/heads/main" />
  <superproject name="superproject"/>
  " /></manifest>
""")
    self.maxDiff = None
    self._superproject = git_superproject.Superproject(
        manifest, name='superproject',
        remote=manifest.remotes.get('default-remote').ToRemoteSpec('superproject'),
        revision='refs/heads/main')
    os.mkdir(self._superproject._superproject_path)
    os.mkdir(self._superproject._work_git)
    with mock.patch.object(self._superproject, '_Init', return_value=True):
      with mock.patch('git_superproject.GitCommand', autospec=True) as mock_git_command:
        with mock.patch('git_superproject.GitRefs.get', autospec=True) as mock_git_refs:
          instance = mock_git_command.return_value
          instance.Wait.return_value = 0
          mock_git_refs.side_effect = ['', '1234']

          self.assertTrue(self._superproject._Fetch())
          self.assertEqual(mock_git_command.call_args.args,(None, [
              'fetch', 'http://localhost/superproject', '--depth', '1',
              '--force', '--no-tags', '--filter', 'blob:none',
              'refs/heads/main:refs/heads/main'
          ]))

          # If branch for revision exists, set as --negotiation-tip.
          self.assertTrue(self._superproject._Fetch())
          self.assertEqual(mock_git_command.call_args.args,(None, [
              'fetch', 'http://localhost/superproject', '--depth', '1',
              '--force', '--no-tags', '--filter', 'blob:none',
              '--negotiation-tip', '1234',
              'refs/heads/main:refs/heads/main'
          ]))