'''
Created on Jan 24, 2014

@author: Chris

TODO: this
'''

import json
import os
import signal
import sys
from argparse import ArgumentParser

from gooey.python_bindings import signal_support
from gooey.gui.util.freeze import getResourcePath
from gooey.util.functional import merge
from . import config_generator
from . import cmd_args





IGNORE_COMMAND = '--ignore-gooey'

# TODO: use these defaults in the decorator and migrate to a flat **kwargs
#       They're pulled out here for wiring up instances in the tests.
#       Some fiddling is needed before I can make the changes to make the swap to
#       `defaults` + **kwargs overrides.
defaults = {
    'advanced': True,
    'language': 'english',
    'auto_start': False,  # TODO: add this to the docs. Used to be `show_config=True`
    'target': None,
    'program_name': None,
    'program_description': None,
    'default_size': (610, 530),
    'use_legacy_titles': True,
    'required_cols': 2,
    'optional_cols': 2,
    'dump_build_config': False,
    'load_build_config': None,
    'monospace_display': False,  # TODO: add this to the docs
    'image_dir': '::gooey/default',
    'language_dir': getResourcePath('languages'),
    'progress_regex': None,  # TODO: add this to the docs
    'progress_expr': None,  # TODO: add this to the docs
    'hide_progress_msg': False,  # TODO: add this to the docs
    'disable_progress_bar_animation': False,
    'disable_stop_button': False,
    'group_by_type': True,
    'header_height': 80,
    'navigation': 'SIDEBAR', # TODO: add this to the docs
    'tabbed_groups': False,
    'use_cmd_args': False,
    'timing_options': {
      'show_time_remaining': False,
      'hide_time_remaining_on_complete': True
    }
}

# TODO: kwargs all the things
def Gooey(f=None,
          advanced=True,
          language='english',
          auto_start=False,  # TODO: add this to the docs. Used to be `show_config=True`
          target=None,
          program_name=None,
          program_description=None,
          default_size=(610, 530),
          use_legacy_titles=True,
          required_cols=2,
          optional_cols=2,
          dump_build_config=False,
          load_build_config=None,
          monospace_display=False,  # TODO: add this to the docs
          image_dir='::gooey/default',
          language_dir=getResourcePath('languages'),
          progress_regex=None,  # TODO: add this to the docs
          progress_expr=None,  # TODO: add this to the docs
          hide_progress_msg=False,  # TODO: add this to the docs
          disable_progress_bar_animation=False,
          disable_stop_button=False,
          group_by_type=True,
          header_height=80,
          navigation='SIDEBAR', # TODO: add this to the docs
          tabbed_groups=False,
          use_cmd_args=False,
          **kwargs):
  '''
  Decorator for client code's main function.
  Serializes argparse data to JSON for use with the Gooey front end
  '''

  params = merge(locals(), locals()['kwargs'])

  if signal_support.requires_special_handler(sys.platform, params.get('shutdown_signal')):
    signal_support.install_handler()

  def build(payload):
    def run_gooey(self, args=None, namespace=None):
      # This import is delayed so it is not in the --ignore-gooey codepath.
      from gooey.gui import application
      source_path = sys.argv[0]

      build_spec = None
      if load_build_config:
        try:
          exec_dir = os.path.dirname(sys.argv[0])
          open_path = os.path.join(exec_dir,load_build_config)
          build_spec = json.load(open(open_path, "r"))
        except Exception as e:
          print('Exception loading Build Config from {0}: {1}'.format(load_build_config, e))
          sys.exit(1)

      if not build_spec:
        if use_cmd_args:
          cmd_args.parse_cmd_args(self, args)

        build_spec = config_generator.create_from_parser(
          self,
          source_path,
          payload_name=payload.__name__,
          **params)

      if dump_build_config:
        config_path = os.path.join(os.path.dirname(sys.argv[0]), 'gooey_config.json')
        print('Writing Build Config to: {}'.format(config_path))
        with open(config_path, 'w') as f:
          f.write(json.dumps(build_spec, indent=2))
      application.run(build_spec)

    def inner2(*args, **kwargs):
      ArgumentParser.original_parse_args = ArgumentParser.parse_args
      ArgumentParser.parse_args = run_gooey
      return payload(*args, **kwargs)

    inner2.__name__ = payload.__name__
    return inner2

  def run_without_gooey(func):
    return lambda *args, **kwargs: func(*args, **kwargs)

  if IGNORE_COMMAND in sys.argv:
    sys.argv.remove(IGNORE_COMMAND)
    if callable(f):
      return run_without_gooey(f)
    return run_without_gooey

  if callable(f):
    return build(f)
  return build


if __name__ == '__main__':
  pass