import os
import sys
import json
import time
import pprint
import logging
import os.path
import argparse

import ssh_utils
import io_scenario
from nodes import discover
from config import cfg_dict
from utils import log_error
from rest_api import add_test
from formatters import get_formatter
from itest import IOPerfTest, PgBenchTest

logger = logging.getLogger("io-perf-tool")
logger.setLevel(logging.DEBUG)
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
logger.addHandler(ch)

log_format = '%(asctime)s - %(levelname)s - %(name)s - %(message)s'
formatter = logging.Formatter(log_format,
                              "%H:%M:%S")
ch.setFormatter(formatter)


tool_type_mapper = {
    "iozone": IOPerfTest,
    "fio": IOPerfTest,
    "pgbench": PgBenchTest,
}


def run_io_test(tool,
                script_args,
                test_runner,
                keep_temp_files=False):

    files_dir = os.path.dirname(io_scenario.__file__)

    path = 'iozone' if 'iozone' == tool else 'fio'
    src_testtool_path = os.path.join(files_dir, path)

    obj_cls = tool_type_mapper[tool]
    obj = obj_cls(script_args,
                  src_testtool_path,
                  None,
                  keep_temp_files)

    return test_runner(obj)


def conn_func(obj, barrier, latest_start_time, conn):
    try:
        test_iter = itest.run_test_iter(obj, conn)
        next(test_iter)

        wait_on_barrier(barrier, latest_start_time)

        with log_error("!Run test"):
            return next(test_iter)
    except:
        print traceback.format_exc()
        raise


def parse_args(argv):
    parser = argparse.ArgumentParser(
        description="Run disk io performance test")

    parser.add_argument("-l", dest='extra_logs',
                        action='store_true', default=False,
                        help="print some extra log info")

    parser.add_argument('stages', nargs="+",
                        choices=["discover", "connect", "start_new_nodes",
                                 "deploy_sensors"])

    # THIS ALL MOVE TO CONFIG FILE
    # parser.add_argument("-o", "--test-opts", dest='opts',
    #                     help="cmd line options for test")

    # parser.add_argument("-f", "--test-opts-file", dest='opts_file',
    #                     type=argparse.FileType('r'), default=None,
    #                     help="file with cmd line options for test")

    # parser.add_argument("--max-preparation-time", default=300,
    #                     type=int, dest="max_preparation_time")

    # parser.add_argument("-b", "--build-info", default=None,
    #                     dest="build_name")

    # parser.add_argument("-d", "--data-server-url", default=None,
    #                     dest="data_server_url")

    # parser.add_argument("-n", "--lab-name", default=None,
    #                     dest="lab_name")

    # parser.add_argument("--create-vms-opts", default=None,
    #                     help="Creating vm's before run ssh runner",
    #                     dest="create_vms_opts")

    # parser.add_argument("-k", "--keep", default=False,
    #                     help="keep temporary files",
    #                     dest="keep_temp_files", action='store_true')

    # parser.add_argument("--runner", required=True,
    #                     choices=["local", "ssh"], help="runner type")

    # parser.add_argument("--runner-extra-opts", default=None,
    #                     dest="runner_opts", help="runner extra options")

    return parser.parse_args(argv[1:])


def format_result(res, formatter):
    data = "\n{0}\n".format("=" * 80)
    data += pprint.pformat(res) + "\n"
    data += "{0}\n".format("=" * 80)
    templ = "{0}\n\n====> {1}\n\n{2}\n\n"
    return templ.format(data, formatter(res), "=" * 80)


def connect_one(node):
    try:
        node.connection = ssh_utils.connect(node.connection_url)
    except Exception:
        logger.exception()


def connect_all(nodes):
    pass


def main(argv):
    logging_conf = cfg_dict.get('logging')
    if logging_conf:
        if logging_conf.get('extra_logs'):
            logger.setLevel(logging.DEBUG)
            ch.setLevel(logging.DEBUG)

    opts = parse_args(argv)
    if 'discover' in opts.stages:
        current_data = discover.discover(cfg_dict.get('discover'))

    if 'connect' in opts.stages:
        for node in current_data:
            pass

    print "\n".join(map(str, current_data))
    return 0

    # tests = cfg_dict.get("tests", [])

    # Deploy and start sensors
    # deploy_and_start_sensors(cfg_dict.get('sensors'), nodes_to_run)

    # for test_name, opts in tests.items():
    #     cmd_line = " ".join(opts['opts'])
    #     logger.debug("Run test with {0!r} params".format(cmd_line))
    #     latest_start_time = 300 + time.time()
    #     uris = [node.connection_url for node in nodes_to_run]
    #     runner = ssh_runner.get_ssh_runner(uris, conn_func,
    #                                        latest_start_time,
    #                                        opts.get('keep_temp_files'))
    #     res = run_io_test(test_name,
    #                       opts['opts'],
    #                       runner,
    #                       opts.get('keep_temp_files'))
    #     logger.debug(format_result(res, get_formatter(test_name)))

    # if cfg_dict.get('data_server_url'):
    #     result = json.loads(get_formatter(opts.tool_type)(res))
    #     result['name'] = opts.build_name
    #     add_test(opts.build_name, result, opts.data_server_url)

    # return 0


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