# Copyright (C) 2016-2018  The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information

import arrow
import click
import csv
import itertools
import json
import locale
import logging
import time
import datetime

from swh.core import utils, config
from swh.storage import get_storage
from swh.storage.algos.origin import iter_origins

from . import compute_nb_tasks_from
from .backend_es import SWHElasticSearchClient
from . import get_scheduler, DEFAULT_CONFIG
from .cli_utils import parse_options, schedule_origin_batches


locale.setlocale(locale.LC_ALL, '')
ARROW_LOCALE = locale.getlocale(locale.LC_TIME)[0]


class DateTimeType(click.ParamType):
    name = 'time and date'

    def convert(self, value, param, ctx):
        if not isinstance(value, arrow.Arrow):
            value = arrow.get(value)

        return value


DATETIME = DateTimeType()
CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])


def format_dict(d):
    ret = {}
    for k, v in d.items():
        if isinstance(v, (arrow.Arrow, datetime.date, datetime.datetime)):
            v = arrow.get(v).format()
        elif isinstance(v, dict):
            v = format_dict(v)
        ret[k] = v
    return ret


def pretty_print_list(list, indent=0):
    """Pretty-print a list"""
    return ''.join('%s%r\n' % (' ' * indent, item) for item in list)


def pretty_print_dict(dict, indent=0):
    """Pretty-print a list"""
    return ''.join('%s%s: %r\n' %
                   (' ' * indent, click.style(key, bold=True), value)
                   for key, value in sorted(dict.items()))


def pretty_print_run(run, indent=4):
    fmt = ('{indent}{backend_id} [{status}]\n'
           '{indent}  scheduled: {scheduled} [{started}:{ended}]')
    return fmt.format(indent=' '*indent, **format_dict(run))


def pretty_print_task(task, full=False):
    """Pretty-print a task

    If 'full' is True, also print the status and priority fields.

    >>> task = {
    ...     'id': 1234,
    ...     'arguments': {
    ...         'args': ['foo', 'bar', True],
    ...         'kwargs': {'key': 'value', 'key2': 42},
    ...     },
    ...     'current_interval': datetime.timedelta(hours=1),
    ...     'next_run': datetime.datetime(2019, 2, 21, 13, 52, 35, 407818),
    ...     'policy': 'oneshot',
    ...     'priority': None,
    ...     'status': 'next_run_not_scheduled',
    ...     'type': 'test_task',
    ... }
    >>> print(click.unstyle(pretty_print_task(task)))
    Task 1234
      Next run: ... (2019-02-21 13:52:35+00:00)
      Interval: 1:00:00
      Type: test_task
      Policy: oneshot
      Args:
        'foo'
        'bar'
        True
      Keyword args:
        key: 'value'
        key2: 42
    <BLANKLINE>
    >>> print(click.unstyle(pretty_print_task(task, full=True)))
    Task 1234
      Next run: ... (2019-02-21 13:52:35+00:00)
      Interval: 1:00:00
      Type: test_task
      Policy: oneshot
      Status: next_run_not_scheduled
      Priority:\x20
      Args:
        'foo'
        'bar'
        True
      Keyword args:
        key: 'value'
        key2: 42
    <BLANKLINE>
    """
    next_run = arrow.get(task['next_run'])
    lines = [
        '%s %s\n' % (click.style('Task', bold=True), task['id']),
        click.style('  Next run: ', bold=True),
        "%s (%s)" % (next_run.humanize(locale=ARROW_LOCALE),
                     next_run.format()),
        '\n',
        click.style('  Interval: ', bold=True),
        str(task['current_interval']), '\n',
        click.style('  Type: ', bold=True), task['type'] or '', '\n',
        click.style('  Policy: ', bold=True), task['policy'] or '', '\n',
        ]
    if full:
        lines += [
            click.style('  Status: ', bold=True),
            task['status'] or '', '\n',
            click.style('  Priority: ', bold=True),
            task['priority'] or '', '\n',
        ]
    lines += [
        click.style('  Args:\n', bold=True),
        pretty_print_list(task['arguments']['args'], indent=4),
        click.style('  Keyword args:\n', bold=True),
        pretty_print_dict(task['arguments']['kwargs'], indent=4),
    ]

    return ''.join(lines)


@click.group(context_settings=CONTEXT_SETTINGS)
@click.option('--config-file', '-C', default=None,
              type=click.Path(exists=True, dir_okay=False,),
              help="Configuration file.")
@click.option('--database', '-d', default=None,
              help="Scheduling database DSN (imply cls is 'local')")
@click.option('--url', '-u', default=None,
              help="Scheduler's url access (imply cls is 'remote')")
@click.option('--log-level', '-l', default='INFO',
              type=click.Choice(logging._nameToLevel.keys()),
              help="Log level (default to INFO)")
@click.option('--no-stdout', is_flag=True, default=False,
              help="Do NOT output logs on the console")
@click.pass_context
def cli(ctx, config_file, database, url, log_level, no_stdout):
    """Software Heritage Scheduler CLI interface

    Default to use the the local scheduler instance (plugged to the
    main scheduler db).

    """
    from swh.scheduler.celery_backend.config import setup_log_handler
    log_level = setup_log_handler(
        loglevel=log_level, colorize=False,
        format='[%(levelname)s] %(name)s -- %(message)s',
        log_console=not no_stdout)

    ctx.ensure_object(dict)

    logger = logging.getLogger(__name__)
    scheduler = None
    conf = config.read(config_file, DEFAULT_CONFIG)
    if 'scheduler' not in conf:
        raise ValueError("missing 'scheduler' configuration")

    if database:
        conf['scheduler']['cls'] = 'local'
        conf['scheduler']['args']['db'] = database
    elif url:
        conf['scheduler']['cls'] = 'remote'
        conf['scheduler']['args'] = {'url': url}
    sched_conf = conf['scheduler']
    try:
        logger.debug('Instanciating scheduler with %s' % (
            sched_conf))
        scheduler = get_scheduler(**sched_conf)
    except ValueError:
        # it's the subcommand to decide whether not having a proper
        # scheduler instance is a problem.
        pass

    ctx.obj['scheduler'] = scheduler
    ctx.obj['config'] = conf
    ctx.obj['loglevel'] = log_level


@cli.group('task')
@click.pass_context
def task(ctx):
    """Manipulate tasks."""
    pass


@task.command('schedule')
@click.option('--columns', '-c', multiple=True,
              default=['type', 'args', 'kwargs', 'next_run'],
              type=click.Choice([
                  'type', 'args', 'kwargs', 'policy', 'next_run']),
              help='columns present in the CSV file')
@click.option('--delimiter', '-d', default=',')
@click.argument('file', type=click.File(encoding='utf-8'))
@click.pass_context
def schedule_tasks(ctx, columns, delimiter, file):
    """Schedule tasks from a CSV input file.

    The following columns are expected, and can be set through the -c option:

     - type: the type of the task to be scheduled (mandatory)

     - args: the arguments passed to the task (JSON list, defaults to an empty
       list)

     - kwargs: the keyword arguments passed to the task (JSON object, defaults
       to an empty dict)

     - next_run: the date at which the task should run (datetime, defaults to
       now)

    The CSV can be read either from a named file, or from stdin (use - as
    filename).

    Use sample:

    cat scheduling-task.txt | \
        python3 -m swh.scheduler.cli \
            --database 'service=swh-scheduler-dev' \
            task schedule \
                --columns type --columns kwargs --columns policy \
                --delimiter ';' -

    """
    tasks = []
    now = arrow.utcnow()
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    reader = csv.reader(file, delimiter=delimiter)
    for line in reader:
        task = dict(zip(columns, line))
        args = json.loads(task.pop('args', '[]'))
        kwargs = json.loads(task.pop('kwargs', '{}'))
        task['arguments'] = {
            'args': args,
            'kwargs': kwargs,
        }
        task['next_run'] = DATETIME.convert(task.get('next_run', now),
                                            None, None)
        tasks.append(task)

    created = scheduler.create_tasks(tasks)

    output = [
        'Created %d tasks\n' % len(created),
    ]
    for task in created:
        output.append(pretty_print_task(task))

    click.echo_via_pager('\n'.join(output))


@task.command('add')
@click.argument('type', nargs=1, required=True)
@click.argument('options', nargs=-1)
@click.option('--policy', '-p', default='recurring',
              type=click.Choice(['recurring', 'oneshot']))
@click.option('--priority', '-P', default=None,
              type=click.Choice(['low', 'normal', 'high']))
@click.option('--next-run', '-n', default=None)
@click.pass_context
def schedule_task(ctx, type, options, policy, priority, next_run):
    """Schedule one task from arguments.

    The first argument is the name of the task type, further ones are
    positional and keyword argument(s) of the task, in YAML format.
    Keyword args are of the form key=value.

    Usage sample:

    swh-scheduler --database 'service=swh-scheduler' \
        task add swh-lister-pypi

    swh-scheduler --database 'service=swh-scheduler' \
        task add swh-lister-debian --policy=oneshot distribution=stretch

    Note: if the priority is not given, the task won't have the priority set,
    which is considered as the lowest priority level.
    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    now = arrow.utcnow()

    (args, kw) = parse_options(options)
    task = {'type': type,
            'policy': policy,
            'priority': priority,
            'arguments': {
                'args': args,
                'kwargs': kw,
                },
            'next_run': DATETIME.convert(next_run or now,
                                         None, None),
            }
    created = scheduler.create_tasks([task])

    output = [
        'Created %d tasks\n' % len(created),
    ]
    for task in created:
        output.append(pretty_print_task(task))

    click.echo('\n'.join(output))


@task.command('schedule_origins')
@click.argument('type', nargs=1, required=True)
@click.argument('options', nargs=-1)
@click.option('--batch-size', '-b', 'origin_batch_size',
              default=10, show_default=True, type=int,
              help="Number of origins per task")
@click.option('--min-id',
              default=0, show_default=True, type=int,
              help="Only schedule tasks for origins whose ID is greater")
@click.option('--max-id',
              default=None, type=int,
              help="Only schedule tasks for origins whose ID is lower")
@click.option('--storage-url', '-g',
              help="URL of the (graph) storage API")
@click.option('--dry-run/--no-dry-run', is_flag=True,
              default=False,
              help='List only what would be scheduled.')
@click.pass_context
def schedule_origin_metadata_index(
        ctx, type, options, storage_url, origin_batch_size,
        min_id, max_id, dry_run):
    """Schedules tasks for origins that are already known.

    The first argument is the name of the task type, further ones are
    keyword argument(s) of the task in the form key=value, where value is
    in YAML format.

    Usage sample:

    swh-scheduler --database 'service=swh-scheduler' \
        task schedule_origins indexer_origin_metadata
    """
    scheduler = ctx.obj['scheduler']
    storage = get_storage('remote', {'url': storage_url})
    if dry_run:
        scheduler = None

    (args, kw) = parse_options(options)
    if args:
        raise click.ClickException('Only keywords arguments are allowed.')

    origins = iter_origins(storage, origin_from=min_id, origin_to=max_id)
    origin_ids = (origin['id'] for origin in origins)

    schedule_origin_batches(
        scheduler, type, origin_ids, origin_batch_size, kw)


@task.command('list-pending')
@click.argument('task-types', required=True, nargs=-1)
@click.option('--limit', '-l', required=False, type=click.INT,
              help='The maximum number of tasks to fetch')
@click.option('--before', '-b', required=False, type=DATETIME,
              help='List all jobs supposed to run before the given date')
@click.pass_context
def list_pending_tasks(ctx, task_types, limit, before):
    """List the tasks that are going to be run.

    You can override the number of tasks to fetch

    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    num_tasks, num_tasks_priority = compute_nb_tasks_from(limit)

    output = []
    for task_type in task_types:
        pending = scheduler.peek_ready_tasks(
            task_type, timestamp=before,
            num_tasks=num_tasks, num_tasks_priority=num_tasks_priority)
        output.append('Found %d %s tasks\n' % (
            len(pending), task_type))

        for task in pending:
            output.append(pretty_print_task(task))

    click.echo('\n'.join(output))


@task.command('list')
@click.option('--task-id', '-i', default=None, multiple=True, metavar='ID',
              help='List only tasks whose id is ID.')
@click.option('--task-type', '-t', default=None, multiple=True, metavar='TYPE',
              help='List only tasks of type TYPE')
@click.option('--limit', '-l', required=False, type=click.INT,
              help='The maximum number of tasks to fetch.')
@click.option('--status', '-s', multiple=True, metavar='STATUS',
              default=None,
              help='List tasks whose status is STATUS.')
@click.option('--policy', '-p', default=None,
              type=click.Choice(['recurring', 'oneshot']),
              help='List tasks whose policy is POLICY.')
@click.option('--priority', '-P', default=None, multiple=True,
              type=click.Choice(['all', 'low', 'normal', 'high']),
              help='List tasks whose priority is PRIORITY.')
@click.option('--before', '-b', required=False, type=DATETIME,
              metavar='DATETIME',
              help='Limit to tasks supposed to run before the given date.')
@click.option('--after', '-a', required=False, type=DATETIME,
              metavar='DATETIME',
              help='Limit to tasks supposed to run after the given date.')
@click.option('--list-runs', '-r', is_flag=True, default=False,
              help='Also list past executions of each task.')
@click.pass_context
def list_tasks(ctx, task_id, task_type, limit, status, policy, priority,
               before, after, list_runs):
    """List tasks.
    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    if not task_type:
        task_type = [x['type'] for x in scheduler.get_task_types()]

    # if task_id is not given, default value for status is
    #  'next_run_not_scheduled'
    # if task_id is given, default status is 'all'
    if task_id is None and status is None:
        status = ['next_run_not_scheduled']
    if status and 'all' in status:
        status = None

    if priority and 'all' in priority:
        priority = None

    output = []
    tasks = scheduler.search_tasks(
        task_id=task_id,
        task_type=task_type,
        status=status, priority=priority, policy=policy,
        before=before, after=after,
        limit=limit)
    if list_runs:
        runs = {t['id']: [] for t in tasks}
        for r in scheduler.get_task_runs([task['id'] for task in tasks]):
            runs[r['task']].append(r)
    else:
        runs = {}

    output.append('Found %d tasks\n' % (
        len(tasks)))
    for task in tasks:
        output.append(pretty_print_task(task, full=True))
        if runs.get(task['id']):
            output.append(click.style('  Executions:', bold=True))
            for run in runs[task['id']]:
                output.append(pretty_print_run(run, indent=4))

    click.echo('\n'.join(output))


@task.command('respawn')
@click.argument('task-ids', required=True, nargs=-1)
@click.option('--next-run', '-n', required=False, type=DATETIME,
              metavar='DATETIME', default=None,
              help='Re spawn the selected tasks at this date')
@click.pass_context
def respawn_tasks(ctx, task_ids, next_run):
    """Respawn tasks.

    Respawn tasks given by their ids (see the 'task list' command to
    find task ids) at the given date (immediately by default).

    Eg.

       swh-scheduler task respawn 1 3 12
    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')
    if next_run is None:
        next_run = arrow.utcnow()
    output = []

    scheduler.set_status_tasks(
        task_ids, status='next_run_not_scheduled', next_run=next_run)
    output.append('Respawn tasks %s\n' % (task_ids,))

    click.echo('\n'.join(output))


@task.command('archive')
@click.option('--before', '-b', default=None,
              help='''Task whose ended date is anterior will be archived.
                      Default to current month's first day.''')
@click.option('--after', '-a', default=None,
              help='''Task whose ended date is after the specified date will
                      be archived. Default to prior month's first day.''')
@click.option('--batch-index', default=1000, type=click.INT,
              help='Batch size of tasks to read from db to archive')
@click.option('--bulk-index', default=200, type=click.INT,
              help='Batch size of tasks to bulk index')
@click.option('--batch-clean', default=1000, type=click.INT,
              help='Batch size of task to clean after archival')
@click.option('--dry-run/--no-dry-run', is_flag=True, default=False,
              help='Default to list only what would be archived.')
@click.option('--verbose', is_flag=True, default=False,
              help='Verbose mode')
@click.option('--cleanup/--no-cleanup', is_flag=True, default=True,
              help='Clean up archived tasks (default)')
@click.option('--start-from', type=click.INT, default=-1,
              help='(Optional) default task id to start from. Default is -1.')
@click.pass_context
def archive_tasks(ctx, before, after, batch_index, bulk_index, batch_clean,
                  dry_run, verbose, cleanup, start_from):
    """Archive task/task_run whose (task_type is 'oneshot' and task_status
       is 'completed') or (task_type is 'recurring' and task_status is
       'disabled').

       With --dry-run flag set (default), only list those.

    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    es_client = SWHElasticSearchClient()
    logging.basicConfig(level=logging.DEBUG if verbose else logging.INFO)
    log = logging.getLogger('swh.scheduler.cli.archive')
    logging.getLogger('urllib3').setLevel(logging.WARN)
    logging.getLogger('elasticsearch').setLevel(logging.WARN)
    if dry_run:
        log.info('**DRY-RUN** (only reading db)')
    if not cleanup:
        log.info('**NO CLEANUP**')

    now = arrow.utcnow()

    # Default to archive tasks from a rolling month starting the week
    # prior to the current one
    if not before:
        before = now.shift(weeks=-1).format('YYYY-MM-DD')

    if not after:
        after = now.shift(weeks=-1).shift(months=-1).format('YYYY-MM-DD')

    log.debug('index: %s; cleanup: %s; period: [%s ; %s]' % (
        not dry_run, not dry_run and cleanup, after, before))

    def group_by_index_name(data, es_client=es_client):
        """Given a data record, determine the index's name through its ending
           date. This varies greatly depending on the task_run's
           status.

        """
        date = data.get('started')
        if not date:
            date = data['scheduled']
        return es_client.compute_index_name(date.year, date.month)

    def index_data(before, last_id, batch_index):
        tasks_in = scheduler.filter_task_to_archive(
            after, before, last_id=last_id, limit=batch_index)
        for index_name, tasks_group in itertools.groupby(
                tasks_in, key=group_by_index_name):
            log.debug('Index tasks to %s' % index_name)
            if dry_run:
                for task in tasks_group:
                    yield task
                continue

            yield from es_client.streaming_bulk(
                index_name, tasks_group, source=['task_id', 'task_run_id'],
                chunk_size=bulk_index, log=log)

    gen = index_data(before, last_id=start_from, batch_index=batch_index)
    if cleanup:
        for task_ids in utils.grouper(gen, n=batch_clean):
            task_ids = list(task_ids)
            log.info('Clean up %s tasks: [%s, ...]' % (
                len(task_ids), task_ids[0]))
            if dry_run:  # no clean up
                continue
            ctx.obj['scheduler'].delete_archived_tasks(task_ids)
    else:
        for task_ids in utils.grouper(gen, n=batch_index):
            task_ids = list(task_ids)
            log.info('Indexed %s tasks: [%s, ...]' % (
                len(task_ids), task_ids[0]))


@cli.command('runner')
@click.option('--period', '-p', default=0,
              help=('Period (in s) at witch pending tasks are checked and '
                    'executed. Set to 0 (default) for a one shot.'))
@click.pass_context
def runner(ctx, period):
    """Starts a swh-scheduler runner service.

    This process is responsible for checking for ready-to-run tasks and
    schedule them."""
    from swh.scheduler.celery_backend.runner import run_ready_tasks
    from swh.scheduler.celery_backend.config import build_app

    app = build_app(ctx.obj['config'].get('celery'))
    app.set_current()

    logger = logging.getLogger(__name__ + '.runner')
    scheduler = ctx.obj['scheduler']
    logger.debug('Scheduler %s' % scheduler)
    try:
        while True:
            logger.debug('Run ready tasks')
            try:
                ntasks = len(run_ready_tasks(scheduler, app))
                if ntasks:
                    logger.info('Scheduled %s tasks', ntasks)
            except Exception:
                logger.exception('Unexpected error in run_ready_tasks()')
            if not period:
                break
            time.sleep(period)
    except KeyboardInterrupt:
        ctx.exit(0)


@cli.command('listener')
@click.pass_context
def listener(ctx):
    """Starts a swh-scheduler listener service.

    This service is responsible for listening at task lifecycle events and
    handle their workflow status in the database."""
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')

    from swh.scheduler.celery_backend.config import build_app
    app = build_app(ctx.obj['config'].get('celery'))
    app.set_current()

    from swh.scheduler.celery_backend.listener import event_monitor
    event_monitor(app, backend=scheduler)


@cli.command('api-server')
@click.option('--host', default='0.0.0.0',
              help="Host to run the scheduler server api")
@click.option('--port', default=5008, type=click.INT,
              help="Binding port of the server")
@click.option('--debug/--nodebug', default=None,
              help=("Indicates if the server should run in debug mode. "
                    "Defaults to True if log-level is DEBUG, False otherwise.")
              )
@click.pass_context
def api_server(ctx, host, port, debug):
    """Starts a swh-scheduler API HTTP server.
    """
    if ctx.obj['config']['scheduler']['cls'] == 'remote':
        click.echo("The API server can only be started with a 'local' "
                   "configuration", err=True)
        ctx.exit(1)

    from swh.scheduler.api import server
    server.app.config.update(ctx.obj['config'])
    if debug is None:
        debug = ctx.obj['loglevel'] <= logging.DEBUG
    server.app.run(host, port=port, debug=bool(debug))


@cli.group('task-type')
@click.pass_context
def task_type(ctx):
    """Manipulate task types."""
    pass


@task_type.command('list')
@click.option('--verbose', '-v', is_flag=True, default=False,
              help='Verbose mode')
@click.option('--task_type', '-t', multiple=True, default=None,
              help='List task types of given type')
@click.option('--task_name', '-n', multiple=True, default=None,
              help='List task types of given backend task name')
@click.pass_context
def list_task_types(ctx, verbose, task_type, task_name):
    click.echo("Known task types:")
    if verbose:
        tmpl = click.style('{type}: ', bold=True) + '''{backend_name}
  {description}
  interval: {default_interval} [{min_interval}, {max_interval}]
  backoff_factor: {backoff_factor}
  max_queue_length: {max_queue_length}
  num_retries: {num_retries}
  retry_delay: {retry_delay}
'''
    else:
        tmpl = '{type}:\n  {description}'
    for tasktype in sorted(ctx.obj['scheduler'].get_task_types(),
                           key=lambda x: x['type']):
        if task_type and tasktype['type'] not in task_type:
            continue
        if task_name and tasktype['backend_name'] not in task_name:
            continue
        click.echo(tmpl.format(**tasktype))


@task_type.command('add')
@click.argument('type', required=1)
@click.argument('task-name', required=1)
@click.argument('description', required=1)
@click.option('--default-interval', '-i', default='90 days',
              help='Default interval ("90 days" by default)')
@click.option('--min-interval', default=None,
              help='Minimum interval (default interval if not set)')
@click.option('--max-interval', '-i', default=None,
              help='Maximal interval (default interval if not set)')
@click.option('--backoff-factor', '-f', type=float, default=1,
              help='Backoff factor')
@click.pass_context
def add_task_type(ctx, type, task_name, description,
                  default_interval, min_interval, max_interval,
                  backoff_factor):
    """Create a new task type
    """
    scheduler = ctx.obj['scheduler']
    if not scheduler:
        raise ValueError('Scheduler class (local/remote) must be instantiated')
    task_type = dict(
        type=type,
        backend_name=task_name,
        description=description,
        default_interval=default_interval,
        min_interval=min_interval,
        max_interval=max_interval,
        backoff_factor=backoff_factor,
        max_queue_length=None,
        num_retries=None,
        retry_delay=None,
        )
    scheduler.create_task_type(task_type)
    click.echo('OK')


@cli.command('updater')
@click.option('--verbose/--no-verbose', '-v', default=False,
              help='Verbose mode')
@click.pass_context
def updater(ctx, verbose):
    """Insert tasks in the scheduler from the scheduler-updater's events

    """
    from swh.scheduler.updater.writer import UpdaterWriter
    UpdaterWriter(**ctx.obj['config']).run()


@cli.command('ghtorrent')
@click.option('--verbose/--no-verbose', '-v', default=False,
              help='Verbose mode')
@click.pass_context
def ghtorrent(ctx, verbose):
    """Consume events from ghtorrent and write them to cache.

    """
    from swh.scheduler.updater.ghtorrent import GHTorrentConsumer
    from swh.scheduler.updater.backend import SchedulerUpdaterBackend

    ght_config = ctx.obj['config'].get('ghtorrent', {})
    back_config = ctx.obj['config'].get('scheduler_updater', {})
    backend = SchedulerUpdaterBackend(**back_config)
    GHTorrentConsumer(backend, **ght_config).run()


def main():
    return cli(auto_envvar_prefix='SWH_SCHEDULER')


if __name__ == '__main__':
    main()