#!/usr/bin/env vpython
# Copyright 2018 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.

import argparse
import os
import sys

from core import path_util
path_util.AddPyUtilsToPath()

from core import cli_utils
from core import external_modules
from core.services import luci_auth
from cli_tools.soundwave import commands
from cli_tools.soundwave import studies


DEFAULT_DATABASE_PATH = os.path.abspath(os.path.join(
    os.path.dirname(__file__), '_cached_data', 'soundwave', 'soundwave.db'))


def main():
  parser = argparse.ArgumentParser()
  # Default args for all actions.
  parser.add_argument(
      '-s', '--sheriff', default='Chromium Perf Sheriff',
      help='Only get data for this sheriff rotation, default: "%(default)s". '
           'You can use the special value "all" to disable filtering by '
           'sheriff rotation.')
  parser.add_argument(
      '-d', '--days', default=30, type=int,
      help='Number of days to collect data for (default: %(default)s)')
  parser.add_argument(
      '--continue', action='store_true', dest='use_cache',
      help='Skip refreshing some data for elements already in local db.')
  parser.add_argument(
      '--processes', type=int, default=40,
      help='Number of concurrent processes to use for fetching data.')
  parser.add_argument(
      '--database-file', default=DEFAULT_DATABASE_PATH,
      help='File path for database where to store data.')
  parser.add_argument(
      '-v', '--verbose', action='count', default=0,
      help='Increase verbosity level')
  subparsers = parser.add_subparsers(dest='action')
  subparsers.required = True
  # Subparser args for fetching alerts data.
  subparser = subparsers.add_parser('alerts')
  subparser.add_argument(
      '-b', '--benchmark', required=True,
      help='Fetch alerts for this benchmark.')
  # Subparser args for fetching timeseries data.
  subparser = subparsers.add_parser('timeseries')
  group = subparser.add_mutually_exclusive_group(required=True)
  group.add_argument(
      '-b', '--benchmark', help='Fetch timeseries for this benchmark.')
  group.add_argument(
      '--study', choices=studies.NAMES,
      help='Fetch timeseries needed for a specific study.')
  group.add_argument(
      '-i', '--input-file',
      help='Fetch timeseries listed in this json file (see e.g.'
           ' examples/soundwave directory).')
  subparser.add_argument(
      '-f', '--filters', action='append',
      help='Only get data for timeseries whose path contains all the given '
           'substrings.')
  group = subparser.add_mutually_exclusive_group()
  group.add_argument(
      '--output-csv', metavar='PATH',
      help='Export the timeseries data to a csv file, the PATH given may be '
           'either a local or a cloud storage (i.e. gs://...) path.')
  group.add_argument(
      '--upload-csv', action='store_true',
      help='Export the timeseries data to the default cloud storage path for '
           'a given --study.')

  args = parser.parse_args()

  cli_utils.ConfigureLogging(args.verbose)
  luci_auth.CheckLoggedIn()
  if args.action == 'alerts':
    commands.FetchAlertsData(args)
  elif args.action == 'timeseries':
    if args.study is not None:
      args.study = studies.GetStudy(args.study)
      if args.upload_csv:
        args.output_csv = args.study.CLOUD_PATH
    elif args.upload_csv:
      return 'ERROR: --upload-csv also requires a --study to be specified'
    commands.FetchTimeseriesData(args)
  else:
    raise NotImplementedError(args.action)


if __name__ == '__main__':
  external_modules.RequireModules()
  sys.exit(main())