# -*- coding: utf-8 -*-
"""
app.py
~~~~~~

:copyright: (c) 2014
"""
import sys
from flask import Flask, request
from flask.ext.script import Manager

import config
from routes.api import api
from routes.home import home

LIST_MODULES = [api,
                home] 

app = Flask('app')


def initialize_app(app=app, config_cls='Default'):
  """
  Compose the dependencies and initialize the Flask app.

  :param app:Existing flask object
  :param config_cls:Flask config class
  :return:
  """
  try:
    config_cls = getattr(config, config_cls)
    app.config.from_object(config_cls)
  except AttributeError:
    traceback = sys.exc_traceback
    raise (AttributeError, "Config class '%s' does not exist in app.config module" % config_cls,
           traceback)
  for module in LIST_MODULES:
    app.register_blueprint(module)


@app.context_processor
def context_processor():
  """
  Context processors run before the template is rendered and have
  the ability to inject new values into the template context.
  A context processor is a function that returns a dictionary.
  """
  inject_object = dict(base_url=request.base_url,
                       url_root=request.url_root)
  return inject_object


manager = Manager(app)


@manager.command
def run(address='0.0.0.0', port='5000', config='Default'):
  """Run development server"""
  initialize_app(app, config_cls=config)
  app.run(host=address, port=int(port))


if __name__ == '__main__':
  manager.run()