import os.path

import json

from flask import Flask, render_template

from flask.ext.bootstrap import Bootstrap

from flask.ext.wtf import CsrfProtect

from flask.ext.moment import Moment

from werkzeug.contrib.fixers import ProxyFix

import gnupg

bootstrap = Bootstrap()

csrf = CsrfProtect()

moment = Moment()

config_file = os.path.abspath('config.json')

def create_app():

    app = Flask(__name__)

    if not hasattr(app.config, 'from_json'):

        def from_json(file, silent=True):

            try:

                with open(file, encoding='utf-8') as json_file:

                    obj = json.load(json_file)

            except IOError:

                if silent:

                    return False

                raise

            for key in obj:

                if key.isupper():

                    app.config[key] = obj[key]

            return True

        app.config.from_json = from_json

    app.config.from_json(config_file)

    app.wsgi_app = ProxyFix(app.wsgi_app)

    bootstrap.init_app(app)

    csrf.init_app(app)

    moment.init_app(app)

    from .status.functions import mail

    mail.init_app(app)

    from .root.views import root_page

    app.register_blueprint(root_page)

    from .api.views import api_page

    app.register_blueprint(api_page, url_prefix='/api')

    from .donate.views import donate_page

    app.register_blueprint(donate_page, url_prefix='/donate')

    from .status.views import status_page

    app.register_blueprint(status_page, url_prefix='/status')

    from .statistics.views import statistics_page

    app.register_blueprint(statistics_page, url_prefix='/stats')

    from .log import init_logging

    init_logging(app)

    if 'ENNSTATUS_GPG_HOME' in app.config:

        gpg = gnupg.GPG(gnupghome=app.config['ENNSTATUS_GPG_HOME'])

        gpg.encoding = 'utf-8'

        app.extensions['gnupg'] = gpg

    else:

        app.extensions['gnupg'] = False

    @app.errorhandler(404)

    def page_not_found(e):

        return render_template('errorpages/404.html')

    return app