# Copyright (c) Microsoft Corporation.
# Licensed under the MIT license.

import argparse
import logging
import os
import pkg_resources
from colorama import init
from .common_utils import print_error
from .launcher import create_experiment, resume_experiment, view_experiment
from .updater import update_searchspace, update_concurrency, update_duration, update_trialnum, import_data
from .nnictl_utils import stop_experiment, trial_ls, trial_kill, list_experiment, experiment_status,\
                          log_trial, experiment_clean, platform_clean, experiment_list, \
                          monitor_experiment, export_trials_data, trial_codegen, webui_url, \
                          get_config, log_stdout, log_stderr, search_space_auto_gen, webui_nas, \
                          save_experiment, load_experiment
from .algo_management import algo_reg, algo_unreg, algo_show, algo_list
from .constants import DEFAULT_REST_PORT
from .import ts_management

init(autoreset=True)

if os.environ.get('COVERAGE_PROCESS_START'):
    import coverage
    coverage.process_startup()

def nni_info(*args):
    if args[0].version:
        try:
            print(pkg_resources.get_distribution('nni').version)
        except pkg_resources.ResolutionError:
            print_error('Get version failed, please use `pip3 list | grep nni` to check nni version!')
    else:
        print('please run "nnictl {positional argument} --help" to see nnictl guidance')

def parse_args():
    logging.getLogger().setLevel(logging.ERROR)

    '''Definite the arguments users need to follow and input'''
    parser = argparse.ArgumentParser(prog='nnictl', description='use nnictl command to control nni experiments')
    parser.add_argument('--version', '-v', action='store_true')
    parser.set_defaults(func=nni_info)

    # create subparsers for args with sub values
    subparsers = parser.add_subparsers()

    # parse the command of auto generating search space
    parser_start = subparsers.add_parser('ss_gen', help='automatically generate search space file from trial code')
    parser_start.add_argument('--trial_command', '-t', required=True, dest='trial_command', help='the command for running trial code')
    parser_start.add_argument('--trial_dir', '-d', default='./', dest='trial_dir', help='the directory for running the command')
    parser_start.add_argument('--file', '-f', default='nni_auto_gen_search_space.json', dest='file', help='the path of search space file')
    parser_start.set_defaults(func=search_space_auto_gen)

    # parse start command
    parser_start = subparsers.add_parser('create', help='create a new experiment')
    parser_start.add_argument('--config', '-c', required=True, dest='config', help='the path of yaml config file')
    parser_start.add_argument('--port', '-p', default=DEFAULT_REST_PORT, dest='port', type=int, help='the port of restful server')
    parser_start.add_argument('--debug', '-d', action='store_true', help=' set debug mode')
    parser_start.add_argument('--url_prefix', '-u', dest='url_prefix', help=' set prefix url')
    parser_start.add_argument('--foreground', '-f', action='store_true', help=' set foreground mode, print log content to terminal')
    parser_start.set_defaults(func=create_experiment)

    # parse resume command
    parser_resume = subparsers.add_parser('resume', help='resume a new experiment')
    parser_resume.add_argument('id', nargs='?', help='The id of the experiment you want to resume')
    parser_resume.add_argument('--port', '-p', default=DEFAULT_REST_PORT, dest='port', type=int, help='the port of restful server')
    parser_resume.add_argument('--debug', '-d', action='store_true', help=' set debug mode')
    parser_resume.add_argument('--foreground', '-f', action='store_true', help=' set foreground mode, print log content to terminal')
    parser_resume.set_defaults(func=resume_experiment)

    # parse view command
    parser_view = subparsers.add_parser('view', help='view a stopped experiment')
    parser_view.add_argument('id', nargs='?', help='The id of the experiment you want to view')
    parser_view.add_argument('--port', '-p', default=DEFAULT_REST_PORT, dest='port', type=int, help='the port of restful server')
    parser_view.set_defaults(func=view_experiment)

    # parse update command
    parser_updater = subparsers.add_parser('update', help='update the experiment')
    #add subparsers for parser_updater
    parser_updater_subparsers = parser_updater.add_subparsers()
    parser_updater_searchspace = parser_updater_subparsers.add_parser('searchspace', help='update searchspace')
    parser_updater_searchspace.add_argument('id', nargs='?', help='the id of experiment')
    parser_updater_searchspace.add_argument('--filename', '-f', required=True)
    parser_updater_searchspace.set_defaults(func=update_searchspace)
    parser_updater_concurrency = parser_updater_subparsers.add_parser('concurrency', help='update concurrency')
    parser_updater_concurrency.add_argument('id', nargs='?', help='the id of experiment')
    parser_updater_concurrency.add_argument('--value', '-v', required=True)
    parser_updater_concurrency.set_defaults(func=update_concurrency)
    parser_updater_duration = parser_updater_subparsers.add_parser('duration', help='update duration')
    parser_updater_duration.add_argument('id', nargs='?', help='the id of experiment')
    parser_updater_duration.add_argument('--value', '-v', required=True, help='the unit of time should in {\'s\', \'m\', \'h\', \'d\'}')
    parser_updater_duration.set_defaults(func=update_duration)
    parser_updater_trialnum = parser_updater_subparsers.add_parser('trialnum', help='update maxtrialnum')
    parser_updater_trialnum.add_argument('id', nargs='?', help='the id of experiment')
    parser_updater_trialnum.add_argument('--value', '-v', required=True)
    parser_updater_trialnum.set_defaults(func=update_trialnum)

    #parse stop command
    parser_stop = subparsers.add_parser('stop', help='stop the experiment')
    parser_stop.add_argument('id', nargs='?', help='the id of experiment, use \'all\' to stop all running experiments')
    parser_stop.add_argument('--port', '-p', dest='port', type=int, help='the port of restful server')
    parser_stop.add_argument('--all', '-a', action='store_true', help='stop all of experiments')
    parser_stop.set_defaults(func=stop_experiment)

    #parse trial command
    parser_trial = subparsers.add_parser('trial', help='get trial information')
    #add subparsers for parser_trial
    parser_trial_subparsers = parser_trial.add_subparsers()
    parser_trial_ls = parser_trial_subparsers.add_parser('ls', help='list trial jobs')
    parser_trial_ls.add_argument('id', nargs='?', help='the id of experiment')
    parser_trial_ls.add_argument('--head', type=int, help='list the highest experiments on the default metric')
    parser_trial_ls.add_argument('--tail', type=int, help='list the lowest experiments on the default metric')
    parser_trial_ls.set_defaults(func=trial_ls)
    parser_trial_kill = parser_trial_subparsers.add_parser('kill', help='kill trial jobs')
    parser_trial_kill.add_argument('id', nargs='?', help='the id of experiment')
    parser_trial_kill.add_argument('--trial_id', '-T', required=True, dest='trial_id', help='the id of trial to be killed')
    parser_trial_kill.set_defaults(func=trial_kill)
    parser_trial_codegen = parser_trial_subparsers.add_parser('codegen', help='generate trial code for a specific trial')
    parser_trial_codegen.add_argument('id', nargs='?', help='the id of experiment')
    parser_trial_codegen.add_argument('--trial_id', '-T', required=True, dest='trial_id', help='the id of trial to do code generation')
    parser_trial_codegen.set_defaults(func=trial_codegen)

    #parse experiment command
    parser_experiment = subparsers.add_parser('experiment', help='get experiment information')
    #add subparsers for parser_experiment
    parser_experiment_subparsers = parser_experiment.add_subparsers()
    parser_experiment_show = parser_experiment_subparsers.add_parser('show', help='show the information of experiment')
    parser_experiment_show.add_argument('id', nargs='?', help='the id of experiment')
    parser_experiment_show.set_defaults(func=list_experiment)
    parser_experiment_status = parser_experiment_subparsers.add_parser('status', help='show the status of experiment')
    parser_experiment_status.add_argument('id', nargs='?', help='the id of experiment')
    parser_experiment_status.set_defaults(func=experiment_status)
    parser_experiment_list = parser_experiment_subparsers.add_parser('list', help='list all of running experiment ids')
    parser_experiment_list.add_argument('--all', action='store_true', default=False, help='list all of experiments')
    parser_experiment_list.set_defaults(func=experiment_list)
    parser_experiment_clean = parser_experiment_subparsers.add_parser('delete', help='clean up the experiment data')
    parser_experiment_clean.add_argument('id', nargs='?', help='the id of experiment')
    parser_experiment_clean.add_argument('--all', action='store_true', default=False, help='delete all of experiments')
    parser_experiment_clean.set_defaults(func=experiment_clean)
    #import tuning data
    parser_import_data = parser_experiment_subparsers.add_parser('import', help='import additional data')
    parser_import_data.add_argument('id', nargs='?', help='the id of experiment')
    parser_import_data.add_argument('--filename', '-f', required=True)
    parser_import_data.set_defaults(func=import_data)
    #export trial data
    parser_trial_export = parser_experiment_subparsers.add_parser('export', help='export trial job results to csv or json')
    parser_trial_export.add_argument('id', nargs='?', help='the id of experiment')
    parser_trial_export.add_argument('--type', '-t', choices=['json', 'csv'], required=True, dest='type', help='target file type')
    parser_trial_export.add_argument('--filename', '-f', required=True, dest='path', help='target file path')
    parser_trial_export.add_argument('--intermediate', '-i', action='store_true',
                                     default=False, help='are intermediate results included')
    parser_trial_export.set_defaults(func=export_trials_data)
    #save an NNI experiment
    parser_save_experiment = parser_experiment_subparsers.add_parser('save', help='save an experiment')
    parser_save_experiment.add_argument('id', nargs='?', help='the id of experiment')
    parser_save_experiment.add_argument('--path', '-p', required=False, help='the folder path to store nni experiment data, \
                                   default current working directory')
    parser_save_experiment.add_argument('--saveCodeDir', '-s', action='store_true', default=False, help='save codeDir data \
                                   of the experiment')
    parser_save_experiment.set_defaults(func=save_experiment)
    #load an NNI experiment
    parser_load_experiment = parser_experiment_subparsers.add_parser('load', help='load an experiment')
    parser_load_experiment.add_argument('--path', '-p', required=True, help='the path of nni package file')
    parser_load_experiment.add_argument('--codeDir', '-c', required=True, help='the path of codeDir for loaded experiment, \
                                   this path will also put the code in the loaded experiment package')
    parser_load_experiment.add_argument('--logDir', '-l', required=False, help='the path of logDir for loaded experiment')
    parser_load_experiment.add_argument('--searchSpacePath', '-s', required=False, help='the path of search space file for \
                                   loaded experiment, this path contains file name. Default in $codeDir/search_space.json')
    parser_load_experiment.set_defaults(func=load_experiment)

    #parse platform command
    parser_platform = subparsers.add_parser('platform', help='get platform information')
    #add subparsers for parser_platform
    parser_platform_subparsers = parser_platform.add_subparsers()
    parser_platform_clean = parser_platform_subparsers.add_parser('clean', help='clean up the platform data')
    parser_platform_clean.add_argument('--config', '-c', required=True, dest='config', help='the path of yaml config file')
    parser_platform_clean.set_defaults(func=platform_clean)

    #TODO:finish webui function
    #parse board command
    parser_webui = subparsers.add_parser('webui', help='get web ui information')
    #add subparsers for parser_board
    parser_webui_subparsers = parser_webui.add_subparsers()
    parser_webui_url = parser_webui_subparsers.add_parser('url', help='show the url of web ui')
    parser_webui_url.add_argument('id', nargs='?', help='the id of experiment')
    parser_webui_url.set_defaults(func=webui_url)
    parser_webui_nas = parser_webui_subparsers.add_parser('nas', help='show nas ui')
    parser_webui_nas.add_argument('--port', default=6060, type=int, help='port of nas ui')
    parser_webui_nas.add_argument('--logdir', default='.', type=str, help='the logdir where nas ui will read data')
    parser_webui_nas.set_defaults(func=webui_nas)

    #parse config command
    parser_config = subparsers.add_parser('config', help='get config information')
    parser_config_subparsers = parser_config.add_subparsers()
    parser_config_show = parser_config_subparsers.add_parser('show', help='show the information of config')
    parser_config_show.add_argument('id', nargs='?', help='the id of experiment')
    parser_config_show.set_defaults(func=get_config)

    #parse log command
    parser_log = subparsers.add_parser('log', help='get log information')
    # add subparsers for parser_log
    parser_log_subparsers = parser_log.add_subparsers()
    parser_log_stdout = parser_log_subparsers.add_parser('stdout', help='get stdout information')
    parser_log_stdout.add_argument('id', nargs='?', help='the id of experiment')
    parser_log_stdout.add_argument('--tail', '-T', dest='tail', type=int, help='get tail -100 content of stdout')
    parser_log_stdout.add_argument('--head', '-H', dest='head', type=int, help='get head -100 content of stdout')
    parser_log_stdout.add_argument('--path', action='store_true', default=False, help='get the path of stdout file')
    parser_log_stdout.set_defaults(func=log_stdout)
    parser_log_stderr = parser_log_subparsers.add_parser('stderr', help='get stderr information')
    parser_log_stderr.add_argument('id', nargs='?', help='the id of experiment')
    parser_log_stderr.add_argument('--tail', '-T', dest='tail', type=int, help='get tail -100 content of stderr')
    parser_log_stderr.add_argument('--head', '-H', dest='head', type=int, help='get head -100 content of stderr')
    parser_log_stderr.add_argument('--path', action='store_true', default=False, help='get the path of stderr file')
    parser_log_stderr.set_defaults(func=log_stderr)
    parser_log_trial = parser_log_subparsers.add_parser('trial', help='get trial log path')
    parser_log_trial.add_argument('id', nargs='?', help='the id of experiment')
    parser_log_trial.add_argument('--trial_id', '-T', dest='trial_id', help='find trial log path by id')
    parser_log_trial.set_defaults(func=log_trial)

    #parse algo command
    parser_algo = subparsers.add_parser('algo', help='control nni builtin tuner, assessor and advisor algorithms')
    # add subparsers for parser_algo
    parser_algo_subparsers = parser_algo.add_subparsers()
    parser_algo_reg = parser_algo_subparsers.add_parser(
        'register',
        aliases=('reg',),
        help='''register algorithms as nni builtin algorithm, for example:
            nnictl reg --meta_path <path_to_meta_file>
            where <path_to_meta_file> is the path to a meta data in yml format,
            reference the nni document and examples/tuners/customized_tuner example
            for the format of the yml file.'''
    )
    parser_algo_reg.add_argument('--meta_path', '-m', dest='meta_path', help='path to the meta file', required=True)
    parser_algo_reg.set_defaults(func=algo_reg)

    parser_algo_unreg = parser_algo_subparsers.add_parser('unregister', aliases=('unreg',), help='unregister algorithm')
    parser_algo_unreg.add_argument('name', nargs=1, help='builtin name of the algorithm')
    parser_algo_unreg.set_defaults(func=algo_unreg)

    parser_algo_show = parser_algo_subparsers.add_parser('show', help='show the information of algorithm')
    parser_algo_show.add_argument('name', nargs=1, help='builtin name of the algorithm')
    parser_algo_show.set_defaults(func=algo_show)

    parser_algo_list = parser_algo_subparsers.add_parser('list', help='list registered algorithms')
    parser_algo_list.set_defaults(func=algo_list)

    #parse trainingservice command
    parser_ts = subparsers.add_parser('trainingservice', help='control training service')
    # add subparsers for parser_ts
    parser_ts_subparsers = parser_ts.add_subparsers()

    parser_ts_reg = parser_ts_subparsers.add_parser('register', help='register training service')
    parser_ts_reg.add_argument('--package', dest='package', help='package name', required=True)
    parser_ts_reg.set_defaults(func=ts_management.register)

    parser_ts_unreg = parser_ts_subparsers.add_parser('unregister', help='unregister training service')
    parser_ts_unreg.add_argument('--package', dest='package', help='package name', required=True)
    parser_ts_unreg.set_defaults(func=ts_management.unregister)

    parser_ts_list = parser_ts_subparsers.add_parser('list', help='list custom training services')
    parser_ts_list.set_defaults(func=ts_management.list_services)

    # To show message that nnictl package command is replaced by nnictl algo, to be remove in the future release.
    def show_messsage_for_nnictl_package(args):
        print_error('nnictl package command is replaced by nnictl algo, please run nnictl algo -h to show the usage')

    parser_package_subparsers = subparsers.add_parser('package', help='this argument is replaced by algo', prefix_chars='\n')
    parser_package_subparsers.add_argument('args', nargs=argparse.REMAINDER)
    parser_package_subparsers.set_defaults(func=show_messsage_for_nnictl_package)

    #parse top command
    parser_top = subparsers.add_parser('top', help='monitor the experiment')
    parser_top.add_argument('--time', '-t', dest='time', type=int, default=3, help='the time interval to update the experiment status, ' \
    'the unit is second')
    parser_top.set_defaults(func=monitor_experiment)

    args = parser.parse_args()
    args.func(args)

if __name__ == '__main__':
    parse_args()