#!/usr/bin/python3

import argparse
import logging
import os

from nitsi.logger import init_logging, Log_Formatter
from nitsi.recipe import RecipeExeption
import nitsi.test
from nitsi.settings import settings_parse_copy_from, NitsiSettings

logger = logging.getLogger("nitsi")

# create console handler
ch = logging.StreamHandler()
formatter = Log_Formatter()
ch.setFormatter(formatter)
# add the handler to the logger
logger.addHandler(ch)

def main():
    parser = argparse.ArgumentParser()

    parser.add_argument( "--log-level", choices=[ "debug", "error", "info", "warning" ], dest="log_level", default="info")

    parser.add_argument("-v", "--version", help="Display version and exit",
                    action="store_true", dest="version")

    # Subparser for different commands
    subparsers = parser.add_subparsers(dest="subparsers_name")

    parser_run_test = subparsers.add_parser('run-test', help='run-test help')
    parser_run_test.add_argument("-d", "--directory", dest="dir", default=None)
    parser_run_test.add_argument("-r", "--recipe", dest="recipe", default=None)
    parser_run_test.add_argument("-s", "--settings", dest="settings", default=None)
    parser_run_test.add_argument("--default-settings", dest="default_settings", default=None)
    parser_run_test.add_argument("--name", dest="name", default=None)
    parser_run_test.add_argument("--description", dest="desc", default=None)
    parser_run_test.add_argument("--copy-to", dest="copy_to", default=None)
    parser_run_test.add_argument("--copy-from", dest="copy_from", default=None, nargs='+')
    parser_run_test.add_argument("--virtual-environment", dest="virtual_environ_path", default=None)
    parser_run_test.add_argument("--interactive-error-handling", dest="interactive_error_handling", default=False, action="store_true")

    args = parser.parse_args()

  # We just log the version and exit
    if args.version:
        logger.info("nitsi version: {}".format("@PACKAGE_VERSION@"))
        return 0


    # Set the log level
    # We are doing this after we logged the version
    # to avoid that the version is not shown because of the log level
    if args.log_level == "info":
        logger.setLevel(logging.INFO)
    elif args.log_level == "debug":
        logger.setLevel(logging.DEBUG)
    elif args.log_level == "warning":
        logger.setLevel(logging.WARNING)
    elif args.log_level == "error":
        logger.setLevel(logging.ERROR)

    # Here we are going to run a test
    if args.subparsers_name == "run-test":
        if not (args.dir or args.recipe):
            logger.error("You need to provide at least a director of a test '-d' or a recipe file '-r'")
            return 4

        if (args.dir and args.recipe) or (args.dir and args.settings):
            logger.error("You cannot use the options '-d' and '-r' or '-d' and '-s' at the same time")
            return 4

        # For all other stuff we need logging to a file
        if args.dir:
            log_dir = init_logging(args.dir)
        elif args.recipe:
            log_dir = init_logging(args.recipe)

        # We now going to log everything to log_dir/genaral.log
        fh = logging.FileHandler("{}/general.log".format(log_dir))
        logger.addHandler(fh)
        logger.debug("We now logging everything to {}/general.log".format(log_dir))

        # Build up settings
        settings = nitsi.settings.NitsiSettings(priority_list=["cmd", "settings-file", "default-settings-file", "nitsi-default"])

        if args.name:
            settings.set_config_value("name", args.name, type="cmd")
        if args.desc:
            settings.set_config_value("description", args.desc, type="cmd")
        if args.copy_to:
            settings.set_config_value("copy_to", args.copy_to, type="cmd")
        if args.copy_from:
            settings.set_config_value("copy_from", nitsi.settings.settings_parse_copy_from(args.copy_from), type="cmd")
        if args.virtual_environ_path:
            path = args.virtual_environ_path
            if not os.path.isabs(path):
                path = os.path.abspath(path)
            settings.set_config_value("virtual_environ_path", path, type="cmd")
        if args.interactive_error_handling:
            settings.set_config_value("interactive_error_handling", True, type="cmd")

        # here we run a test
        try:
            currenttest = nitsi.test.Test(
                log_dir,
                dir=args.dir,
                recipe_file=args.recipe,
                settings_file=args.settings,
                settings=settings,
                default_settings_file=args.default_settings)
            currenttest.virtual_environ_setup_stage_1()
            currenttest.load_recipe()
            currenttest.virtual_environ_setup_stage_2()
        except RecipeExeption as e:
            logger.exception(e)
            return 2

        try:
            currenttest.virtual_environ_start()
            currenttest.run_recipe()
        except nitsi.test.TestException as e:
            logger.exception(e)
            return 1
        except BaseException as e:
            logger.exception(e)
            return 3
        finally:
            currenttest.virtual_environ_stop()

        return 0

if __name__ == "__main__":
   return_value = main()
   logger.debug("Return value of main is: {}".format(return_value))
   exit(return_value)