#!/usr/bin/env python
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Get stats about your activity.

Example:
  - my_activity.py  for stats for the current week (last week on mondays).
  - my_activity.py -Q  for stats for last quarter.
  - my_activity.py -Y  for stats for this year.
  - my_activity.py -b 4/5/12  for stats since 4/5/12.
  - my_activity.py -b 4/5/12 -e 6/7/12 for stats between 4/5/12 and 6/7/12.
  - my_activity.py -jd to output stats for the week to json with deltas data.
"""

# TODO(vadimsh): This script knows too much about ClientLogin and cookies. It
# will stop to work on ~20 Apr 2015.

# These services typically only provide a created time and a last modified time
# for each item for general queries. This is not enough to determine if there
# was activity in a given time period. So, we first query for all things created
# before end and modified after begin. Then, we get the details of each item and
# check those details to determine if there was activity in the given period.
# This means that query time scales mostly with (today() - begin).

from datetime import datetime
from datetime import timedelta
from functools import partial
import json
import logging
import optparse
import os
import subprocess
from string import Formatter
import sys
import urllib
import re

import auth
import fix_encoding
import gerrit_util
import rietveld

from third_party import httplib2

try:
  import dateutil  # pylint: disable=import-error
  import dateutil.parser
  from dateutil.relativedelta import relativedelta
except ImportError:
  logging.error('python-dateutil package required')
  exit(1)


class DefaultFormatter(Formatter):
  def __init__(self, default = ''):
    super(DefaultFormatter, self).__init__()
    self.default = default

  def get_value(self, key, args, kwds):
    if isinstance(key, basestring) and key not in kwds:
      return self.default
    return Formatter.get_value(self, key, args, kwds)

rietveld_instances = [
  {
    'url': 'codereview.chromium.org',
    'shorturl': 'crrev.com',
    'supports_owner_modified_query': True,
    'requires_auth': False,
    'email_domain': 'chromium.org',
    'short_url_protocol': 'https',
  },
  {
    'url': 'chromereviews.googleplex.com',
    'shorturl': 'go/chromerev',
    'supports_owner_modified_query': True,
    'requires_auth': True,
    'email_domain': 'google.com',
  },
  {
    'url': 'codereview.appspot.com',
    'supports_owner_modified_query': True,
    'requires_auth': False,
    'email_domain': 'chromium.org',
  },
  {
    'url': 'breakpad.appspot.com',
    'supports_owner_modified_query': False,
    'requires_auth': False,
    'email_domain': 'chromium.org',
  },
]

gerrit_instances = [
  {
    'url': 'chromium-review.googlesource.com',
    'shorturl': 'crrev.com/c',
    'short_url_protocol': 'https',
  },
  {
    'url': 'chrome-internal-review.googlesource.com',
    'shorturl': 'crrev.com/i',
    'short_url_protocol': 'https',
  },
  {
    'url': 'android-review.googlesource.com',
  },
]

google_code_projects = [
  {
    'name': 'chromium',
    'shorturl': 'crbug.com',
    'short_url_protocol': 'https',
  },
  {
    'name': 'google-breakpad',
  },
  {
    'name': 'gyp',
  },
  {
    'name': 'skia',
  },
]

def username(email):
  """Keeps the username of an email address."""
  return email and email.split('@', 1)[0]


def datetime_to_midnight(date):
  return date - timedelta(hours=date.hour, minutes=date.minute,
                          seconds=date.second, microseconds=date.microsecond)


def get_quarter_of(date):
  begin = (datetime_to_midnight(date) -
           relativedelta(months=(date.month % 3) - 1, days=(date.day - 1)))
  return begin, begin + relativedelta(months=3)


def get_year_of(date):
  begin = (datetime_to_midnight(date) -
           relativedelta(months=(date.month - 1), days=(date.day - 1)))
  return begin, begin + relativedelta(years=1)


def get_week_of(date):
  begin = (datetime_to_midnight(date) - timedelta(days=date.weekday()))
  return begin, begin + timedelta(days=7)


def get_yes_or_no(msg):
  while True:
    response = raw_input(msg + ' yes/no [no] ')
    if response == 'y' or response == 'yes':
      return True
    elif not response or response == 'n' or response == 'no':
      return False


def datetime_from_gerrit(date_string):
  return datetime.strptime(date_string, '%Y-%m-%d %H:%M:%S.%f000')


def datetime_from_rietveld(date_string):
  try:
    return datetime.strptime(date_string, '%Y-%m-%d %H:%M:%S.%f')
  except ValueError:
    # Sometimes rietveld returns a value without the milliseconds part, so we
    # attempt to parse those cases as well.
    return datetime.strptime(date_string, '%Y-%m-%d %H:%M:%S')


def datetime_from_google_code(date_string):
  return datetime.strptime(date_string, '%Y-%m-%dT%H:%M:%S.%fZ')


class MyActivity(object):
  def __init__(self, options):
    self.options = options
    self.modified_after = options.begin
    self.modified_before = options.end
    self.user = options.user
    self.changes = []
    self.reviews = []
    self.issues = []
    self.check_cookies()
    self.google_code_auth_token = None

  # Check the codereview cookie jar to determine which Rietveld instances to
  # authenticate to.
  def check_cookies(self):
    filtered_instances = []

    def has_cookie(instance):
      auth_config = auth.extract_auth_config_from_options(self.options)
      a = auth.get_authenticator_for_host(instance['url'], auth_config)
      return a.has_cached_credentials()

    for instance in rietveld_instances:
      instance['auth'] = has_cookie(instance)

    if filtered_instances:
      logging.warning('No cookie found for the following Rietveld instance%s:',
                   's' if len(filtered_instances) > 1 else '')
      for instance in filtered_instances:
        logging.warning('\t' + instance['url'])
      logging.warning('Use --auth if you would like to authenticate to them.')

  def rietveld_search(self, instance, owner=None, reviewer=None):
    if instance['requires_auth'] and not instance['auth']:
      return []


    email = None if instance['auth'] else ''
    auth_config = auth.extract_auth_config_from_options(self.options)
    remote = rietveld.Rietveld('https://' + instance['url'], auth_config, email)

    # See def search() in rietveld.py to see all the filters you can use.
    query_modified_after = None

    if instance['supports_owner_modified_query']:
      query_modified_after = self.modified_after.strftime('%Y-%m-%d')

    # Rietveld does not allow search by both created_before and modified_after.
    # (And some instances don't allow search by both owner and modified_after)
    owner_email = None
    reviewer_email = None
    if owner:
      owner_email = owner + '@' + instance['email_domain']
    if reviewer:
      reviewer_email = reviewer + '@' + instance['email_domain']
    issues = remote.search(
        owner=owner_email,
        reviewer=reviewer_email,
        modified_after=query_modified_after,
        with_messages=True)

    issues = filter(
        lambda i: (datetime_from_rietveld(i['created']) < self.modified_before),
        issues)
    issues = filter(
        lambda i: (datetime_from_rietveld(i['modified']) > self.modified_after),
        issues)

    should_filter_by_user = True
    issues = map(partial(self.process_rietveld_issue, remote, instance), issues)
    issues = filter(
        partial(self.filter_issue, should_filter_by_user=should_filter_by_user),
        issues)
    issues = sorted(issues, key=lambda i: i['modified'], reverse=True)

    return issues

  def extract_bug_number_from_description(self, issue):
    description = None

    if 'description' in issue:
      # Getting the  description for Rietveld
      description = issue['description']
    elif 'revisions' in issue:
      # Getting the description for REST Gerrit
      revision = issue['revisions'][issue['current_revision']]
      description = revision['commit']['message']

    bugs = []
    if description:
      # Handle both "Bug: 99999" and "BUG=99999" bug notations
      # Multiple bugs can be noted on a single line or in multiple ones.
      matches = re.findall(r'BUG[=:]\s?(((\d+)(,\s?)?)+)', description,
                           flags=re.IGNORECASE)
      if matches:
        for match in matches:
          bugs.extend(match[0].replace(' ', '').split(','))

    return bugs

  def process_rietveld_issue(self, remote, instance, issue):
    ret = {}
    if self.options.deltas:
      patchset_props = remote.get_patchset_properties(
          issue['issue'],
          issue['patchsets'][-1])
      ret['delta'] = '+%d,-%d' % (
          sum(f['num_added'] for f in patchset_props['files'].itervalues()),
          sum(f['num_removed'] for f in patchset_props['files'].itervalues()))

    if issue['landed_days_ago'] != 'unknown':
      ret['status'] = 'committed'
    elif issue['closed']:
      ret['status'] = 'closed'
    elif len(issue['reviewers']) and issue['all_required_reviewers_approved']:
      ret['status'] = 'ready'
    else:
      ret['status'] = 'open'

    ret['owner'] = issue['owner_email']
    ret['author'] = ret['owner']

    ret['reviewers'] = set(issue['reviewers'])

    if 'shorturl' in instance:
      url = instance['shorturl']
      protocol = instance.get('short_url_protocol', 'http')
    else:
      url = instance['url']
      protocol = 'https'

    ret['review_url'] = '%s://%s/%d' % (protocol, url, issue['issue'])

    # Rietveld sometimes has '\r\n' instead of '\n'.
    ret['header'] = issue['description'].replace('\r', '').split('\n')[0]

    ret['modified'] = datetime_from_rietveld(issue['modified'])
    ret['created'] = datetime_from_rietveld(issue['created'])
    ret['replies'] = self.process_rietveld_replies(issue['messages'])

    ret['bug'] = self.extract_bug_number_from_description(issue)
    ret['landed_days_ago'] = issue['landed_days_ago']

    return ret

  @staticmethod
  def process_rietveld_replies(replies):
    ret = []
    for reply in replies:
      r = {}
      r['author'] = reply['sender']
      r['created'] = datetime_from_rietveld(reply['date'])
      r['content'] = ''
      ret.append(r)
    return ret

  @staticmethod
  def gerrit_changes_over_rest(instance, filters):
    # Convert the "key:value" filter to a list of (key, value) pairs.
    req = list(f.split(':', 1) for f in filters)
    try:
      # Instantiate the generator to force all the requests now and catch the
      # errors here.
      return list(gerrit_util.GenerateAllChanges(instance['url'], req,
          o_params=['MESSAGES', 'LABELS', 'DETAILED_ACCOUNTS',
                    'CURRENT_REVISION', 'CURRENT_COMMIT']))
    except gerrit_util.GerritError, e:
      logging.error('Looking up %r: %s', instance['url'], e)
      return []

  def gerrit_search(self, instance, owner=None, reviewer=None):
    max_age = datetime.today() - self.modified_after
    max_age = max_age.days * 24 * 3600 + max_age.seconds
    user_filter = 'owner:%s' % owner if owner else 'reviewer:%s' % reviewer
    filters = ['-age:%ss' % max_age, user_filter]

    issues = self.gerrit_changes_over_rest(instance, filters)
    issues = [self.process_gerrit_issue(instance, issue)
              for issue in issues]

    # TODO(cjhopman): should we filter abandoned changes?
    issues = filter(self.filter_issue, issues)
    issues = sorted(issues, key=lambda i: i['modified'], reverse=True)

    return issues

  def process_gerrit_issue(self, instance, issue):
    ret = {}
    if self.options.deltas:
      ret['delta'] = DefaultFormatter().format(
          '+{insertions},-{deletions}',
          **issue)
    ret['status'] = issue['status']
    if 'shorturl' in instance:
      protocol = instance.get('short_url_protocol', 'http')
      url = instance['shorturl']
    else:
      protocol = 'https'
      url = instance['url']
    ret['review_url'] = '%s://%s/%s' % (protocol, url, issue['_number'])

    ret['header'] = issue['subject']
    ret['owner'] = issue['owner']['email']
    ret['author'] = ret['owner']
    ret['created'] = datetime_from_gerrit(issue['created'])
    ret['modified'] = datetime_from_gerrit(issue['updated'])
    if 'messages' in issue:
      ret['replies'] = self.process_gerrit_issue_replies(issue['messages'])
    else:
      ret['replies'] = []
    ret['reviewers'] = set(r['author'] for r in ret['replies'])
    ret['reviewers'].discard(ret['author'])
    ret['bug'] = self.extract_bug_number_from_description(issue)
    return ret

  @staticmethod
  def process_gerrit_issue_replies(replies):
    ret = []
    replies = filter(lambda r: 'author' in r and 'email' in r['author'],
        replies)
    for reply in replies:
      ret.append({
        'author': reply['author']['email'],
        'created': datetime_from_gerrit(reply['date']),
        'content': reply['message'],
      })
    return ret

  def project_hosting_issue_search(self, instance):
    auth_config = auth.extract_auth_config_from_options(self.options)
    authenticator = auth.get_authenticator_for_host(
        'bugs.chromium.org', auth_config)
    http = authenticator.authorize(httplib2.Http())
    url = ('https://monorail-prod.appspot.com/_ah/api/monorail/v1/projects'
           '/%s/issues') % instance['name']
    epoch = datetime.utcfromtimestamp(0)
    user_str = '%s@chromium.org' % self.user

    query_data = urllib.urlencode({
      'maxResults': 10000,
      'q': user_str,
      'publishedMax': '%d' % (self.modified_before - epoch).total_seconds(),
      'updatedMin': '%d' % (self.modified_after - epoch).total_seconds(),
    })
    url = url + '?' + query_data
    _, body = http.request(url)
    content = json.loads(body)
    if not content:
      logging.error('Unable to parse %s response from projecthosting.',
          instance['name'])
      return []

    issues = []
    if 'items' in content:
      items = content['items']
      for item in items:
        if instance.get('shorturl'):
          protocol = instance.get('short_url_protocol', 'http')
          item_url = '%s://%s/%d' % (protocol, instance['shorturl'], item['id'])
        else:
          item_url = 'https://bugs.chromium.org/p/%s/issues/detail?id=%d' % (
              instance['name'], item['id'])
        issue = {
          'header': item['title'],
          'created': dateutil.parser.parse(item['published']),
          'modified': dateutil.parser.parse(item['updated']),
          'author': item['author']['name'],
          'url': item_url,
          'comments': [],
          'status': item['status'],
          'labels': [],
          'components': []
        }
        if 'owner' in item:
          issue['owner'] = item['owner']['name']
        else:
          issue['owner'] = 'None'
        if issue['owner'] == user_str or issue['author'] == user_str:
          issues.append(issue)
        if 'labels' in item:
          issue['labels'] = item['labels']
        if 'components' in item:
          issue['components'] = item['components']

    return issues

  def print_heading(self, heading):
    print
    print self.options.output_format_heading.format(heading=heading)

  def match(self, author):
    if '@' in self.user:
      return author == self.user
    return author.startswith(self.user + '@')

  def print_change(self, change):
    activity = len([
        reply
        for reply in change['replies']
        if self.match(reply['author'])
    ])
    optional_values = {
        'created': change['created'].date().isoformat(),
        'modified': change['modified'].date().isoformat(),
        'reviewers': ', '.join(change['reviewers']),
        'status': change['status'],
        'activity': activity,
    }
    if self.options.deltas:
      optional_values['delta'] = change['delta']

    self.print_generic(self.options.output_format,
                       self.options.output_format_changes,
                       change['header'],
                       change['review_url'],
                       change['author'],
                       optional_values)

  def print_issue(self, issue):
    optional_values = {
        'created': issue['created'].date().isoformat(),
        'modified': issue['modified'].date().isoformat(),
        'owner': issue['owner'],
        'status': issue['status'],
    }
    self.print_generic(self.options.output_format,
                       self.options.output_format_issues,
                       issue['header'],
                       issue['url'],
                       issue['author'],
                       optional_values)

  def print_review(self, review):
    activity = len([
        reply
        for reply in review['replies']
        if self.match(reply['author'])
    ])
    optional_values = {
        'created': review['created'].date().isoformat(),
        'modified': review['modified'].date().isoformat(),
        'activity': activity,
    }
    self.print_generic(self.options.output_format,
                       self.options.output_format_reviews,
                       review['header'],
                       review['review_url'],
                       review['author'],
                       optional_values)

  @staticmethod
  def print_generic(default_fmt, specific_fmt,
                    title, url, author,
                    optional_values=None):
    output_format = specific_fmt if specific_fmt is not None else default_fmt
    output_format = unicode(output_format)
    values = {
        'title': title,
        'url': url,
        'author': author,
    }
    if optional_values is not None:
      values.update(optional_values)
    print DefaultFormatter().format(output_format, **values).encode(
        sys.getdefaultencoding())


  def filter_issue(self, issue, should_filter_by_user=True):
    def maybe_filter_username(email):
      return not should_filter_by_user or username(email) == self.user
    if (maybe_filter_username(issue['author']) and
        self.filter_modified(issue['created'])):
      return True
    if (maybe_filter_username(issue['owner']) and
        (self.filter_modified(issue['created']) or
         self.filter_modified(issue['modified']))):
      return True
    for reply in issue['replies']:
      if self.filter_modified(reply['created']):
        if not should_filter_by_user:
          break
        if (username(reply['author']) == self.user
            or (self.user + '@') in reply['content']):
          break
    else:
      return False
    return True

  def filter_modified(self, modified):
    return self.modified_after < modified and modified < self.modified_before

  def auth_for_changes(self):
    #TODO(cjhopman): Move authentication check for getting changes here.
    pass

  def auth_for_reviews(self):
    # Reviews use all the same instances as changes so no authentication is
    # required.
    pass

  def get_changes(self):
    for instance in rietveld_instances:
      self.changes += self.rietveld_search(instance, owner=self.user)

    for instance in gerrit_instances:
      self.changes += self.gerrit_search(instance, owner=self.user)

  def print_changes(self):
    if self.changes:
      self.print_heading('Changes')
      for change in self.changes:
        self.print_change(change)

  def get_reviews(self):
    for instance in rietveld_instances:
      self.reviews += self.rietveld_search(instance, reviewer=self.user)

    for instance in gerrit_instances:
      reviews = self.gerrit_search(instance, reviewer=self.user)
      reviews = filter(lambda r: not username(r['owner']) == self.user, reviews)
      self.reviews += reviews

  def print_reviews(self):
    if self.reviews:
      self.print_heading('Reviews')
      for review in self.reviews:
        self.print_review(review)

  def get_issues(self):
    for project in google_code_projects:
      self.issues += self.project_hosting_issue_search(project)

  def print_issues(self):
    if self.issues:
      self.print_heading('Issues')
      for issue in self.issues:
        self.print_issue(issue)

  def print_activity(self):
    self.print_changes()
    self.print_reviews()
    self.print_issues()

  def dump_json(self, ignore_keys=None):
    if ignore_keys is None:
      ignore_keys = ['replies']

    def format_for_json_dump(in_array):
      output = {}
      for item in in_array:
        url = item.get('url') or item.get('review_url')
        if not url:
          raise Exception('Dumped item %s does not specify url' % item)
        output[url] = dict(
            (k, v) for k,v in item.iteritems() if k not in ignore_keys)
      return output

    class PythonObjectEncoder(json.JSONEncoder):
      def default(self, obj):  # pylint: disable=method-hidden
        if isinstance(obj, datetime):
          return obj.isoformat()
        if isinstance(obj, set):
          return list(obj)
        return json.JSONEncoder.default(self, obj)

    output = {
      'reviews': format_for_json_dump(self.reviews),
      'changes': format_for_json_dump(self.changes),
      'issues': format_for_json_dump(self.issues)
    }
    print json.dumps(output, indent=2, cls=PythonObjectEncoder)


def main():
  # Silence upload.py.
  rietveld.upload.verbosity = 0

  parser = optparse.OptionParser(description=sys.modules[__name__].__doc__)
  parser.add_option(
      '-u', '--user', metavar='<email>',
      default=os.environ.get('USER'),
      help='Filter on user, default=%default')
  parser.add_option(
      '-b', '--begin', metavar='<date>',
      help='Filter issues created after the date (mm/dd/yy)')
  parser.add_option(
      '-e', '--end', metavar='<date>',
      help='Filter issues created before the date (mm/dd/yy)')
  quarter_begin, quarter_end = get_quarter_of(datetime.today() -
                                              relativedelta(months=2))
  parser.add_option(
      '-Q', '--last_quarter', action='store_true',
      help='Use last quarter\'s dates, i.e. %s to %s' % (
        quarter_begin.strftime('%Y-%m-%d'), quarter_end.strftime('%Y-%m-%d')))
  parser.add_option(
      '-Y', '--this_year', action='store_true',
      help='Use this year\'s dates')
  parser.add_option(
      '-w', '--week_of', metavar='<date>',
      help='Show issues for week of the date (mm/dd/yy)')
  parser.add_option(
      '-W', '--last_week', action='count',
      help='Show last week\'s issues. Use more times for more weeks.')
  parser.add_option(
      '-a', '--auth',
      action='store_true',
      help='Ask to authenticate for instances with no auth cookie')
  parser.add_option(
      '-d', '--deltas',
      action='store_true',
      help='Fetch deltas for changes (slow).')

  activity_types_group = optparse.OptionGroup(parser, 'Activity Types',
                               'By default, all activity will be looked up and '
                               'printed. If any of these are specified, only '
                               'those specified will be searched.')
  activity_types_group.add_option(
      '-c', '--changes',
      action='store_true',
      help='Show changes.')
  activity_types_group.add_option(
      '-i', '--issues',
      action='store_true',
      help='Show issues.')
  activity_types_group.add_option(
      '-r', '--reviews',
      action='store_true',
      help='Show reviews.')
  parser.add_option_group(activity_types_group)

  output_format_group = optparse.OptionGroup(parser, 'Output Format',
                              'By default, all activity will be printed in the '
                              'following format: {url} {title}. This can be '
                              'changed for either all activity types or '
                              'individually for each activity type. The format '
                              'is defined as documented for '
                              'string.format(...). The variables available for '
                              'all activity types are url, title and author. '
                              'Format options for specific activity types will '
                              'override the generic format.')
  output_format_group.add_option(
      '-f', '--output-format', metavar='<format>',
      default=u'{url} {title}',
      help='Specifies the format to use when printing all your activity.')
  output_format_group.add_option(
      '--output-format-changes', metavar='<format>',
      default=None,
      help='Specifies the format to use when printing changes. Supports the '
      'additional variable {reviewers}')
  output_format_group.add_option(
      '--output-format-issues', metavar='<format>',
      default=None,
      help='Specifies the format to use when printing issues. Supports the '
           'additional variable {owner}.')
  output_format_group.add_option(
      '--output-format-reviews', metavar='<format>',
      default=None,
      help='Specifies the format to use when printing reviews.')
  output_format_group.add_option(
      '--output-format-heading', metavar='<format>',
      default=u'{heading}:',
      help='Specifies the format to use when printing headings.')
  output_format_group.add_option(
      '-m', '--markdown', action='store_true',
      help='Use markdown-friendly output (overrides --output-format '
           'and --output-format-heading)')
  output_format_group.add_option(
      '-j', '--json', action='store_true',
      help='Output json data (overrides other format options)')
  parser.add_option_group(output_format_group)
  auth.add_auth_options(parser)

  parser.add_option(
      '-v', '--verbose',
      action='store_const',
      dest='verbosity',
      default=logging.WARN,
      const=logging.INFO,
      help='Output extra informational messages.'
  )
  parser.add_option(
      '-q', '--quiet',
      action='store_const',
      dest='verbosity',
      const=logging.ERROR,
      help='Suppress non-error messages.'
  )
  parser.add_option(
      '-o', '--output', metavar='<file>',
      help='Where to output the results. By default prints to stdout.')

  # Remove description formatting
  parser.format_description = (
      lambda _: parser.description)  # pylint: disable=no-member

  options, args = parser.parse_args()
  options.local_user = os.environ.get('USER')
  if args:
    parser.error('Args unsupported')
  if not options.user:
    parser.error('USER is not set, please use -u')
  options.user = username(options.user)

  logging.basicConfig(level=options.verbosity)

  # python-keyring provides easy access to the system keyring.
  try:
    import keyring  # pylint: disable=unused-import,unused-variable,F0401
  except ImportError:
    logging.warning('Consider installing python-keyring')

  if not options.begin:
    if options.last_quarter:
      begin, end = quarter_begin, quarter_end
    elif options.this_year:
      begin, end = get_year_of(datetime.today())
    elif options.week_of:
      begin, end = (get_week_of(datetime.strptime(options.week_of, '%m/%d/%y')))
    elif options.last_week:
      begin, end = (get_week_of(datetime.today() -
                                timedelta(days=1 + 7 * options.last_week)))
    else:
      begin, end = (get_week_of(datetime.today() - timedelta(days=1)))
  else:
    begin = dateutil.parser.parse(options.begin)
    if options.end:
      end = dateutil.parser.parse(options.end)
    else:
      end = datetime.today()
  options.begin, options.end = begin, end

  if options.markdown:
    options.output_format = ' * [{title}]({url})'
    options.output_format_heading = '### {heading} ###'
  logging.info('Searching for activity by %s', options.user)
  logging.info('Using range %s to %s', options.begin, options.end)

  my_activity = MyActivity(options)

  if not (options.changes or options.reviews or options.issues):
    options.changes = True
    options.issues = True
    options.reviews = True

  # First do any required authentication so none of the user interaction has to
  # wait for actual work.
  if options.changes:
    my_activity.auth_for_changes()
  if options.reviews:
    my_activity.auth_for_reviews()

  logging.info('Looking up activity.....')

  try:
    if options.changes:
      my_activity.get_changes()
    if options.reviews:
      my_activity.get_reviews()
    if options.issues:
      my_activity.get_issues()
  except auth.AuthenticationError as e:
    logging.error('auth.AuthenticationError: %s', e)

  output_file = None
  try:
    if options.output:
      output_file = open(options.output, 'w')
      logging.info('Printing output to "%s"', options.output)
      sys.stdout = output_file
  except (IOError, OSError) as e:
    logging.error('Unable to write output: %s', e)
  else:
    if options.json:
      my_activity.dump_json()
    else:
      my_activity.print_changes()
      my_activity.print_reviews()
      my_activity.print_issues()
  finally:
    if output_file:
      logging.info('Done printing to file.')
      sys.stdout = sys.__stdout__
      output_file.close()

  return 0


if __name__ == '__main__':
  # Fix encoding to support non-ascii issue titles.
  fix_encoding.fix_encoding()

  try:
    sys.exit(main())
  except KeyboardInterrupt:
    sys.stderr.write('interrupted\n')
    sys.exit(1)