openisp/Backend/Sources/View/view_manager.py

from array import array
import threading
from flask import session,Flask,request, jsonify
import flask
import flask_cors

import persistence
import Model.isp_model as isp_model
import Model.model_manager as model_manager
from werkzeug.security import check_password_hash,generate_password_hash
import View.view_privilege as privileges
import Modules.Inventory.inventory_view as inventory_view
from datetime import timedelta
import View.view_error_management as view_error_management
from flask_limiter import Limiter
from flask_limiter.util import get_remote_address
import json
import View.view_basics_api as view_basic_api


import logging
from utility.app_logging import logger_name
logger = logging.getLogger(logger_name + ".VIEW")

__app__ = Flask("OpenIsp")
__app__.secret_key = "aseqzdwxc"
__app__.permanent_session_lifetime = timedelta(minutes=2)
__app__.logger = logger
__app__.config['JSONIFY_PRETTYPRINT_REGULAR'] = True
#flask_cors.CORS(__app__)
#logging.getLogger('flask_cors').level = logging.DEBUG

limiter = Limiter(__app__,key_func=get_remote_address,default_limits=["100 per minute"])
limiter.logger = logger

from werkzeug.serving import make_server
class ServerThread(threading.Thread):

    def __init__(self, app,ip,port):
        threading.Thread.__init__(self)
        self.server = make_server(ip, port, app)
        self.ctx = app.app_context()
        self.ctx.push()

    def run(self):
        logger.info('starting server')
        self.server.serve_forever()

    def shutdown(self):
        self.server.shutdown()

__server_process__ : ServerThread

def get_user_privilege() :
    return privileges.get_privileges_from_user(session["user_account_id"])


def init() :
    privileges.init()
    view_error_management.define_error_management(__app__)
    view_basic_api.define_basic_api(__app__)


@__app__.after_request
def after_request(response : flask.Response):
    header = response.headers

    # adding this to the header to allow cross origin
    # for exemple origin cross origin is when website with javascript has it's server (origin 1)
    # and the javascript call some request on another server (origin 2), typically our API.
    header['Access-Control-Allow-Credentials'] =  'true'
    header['Access-Control-Allow-Origin']  = 'http://127.0.0.1:8000'
    header['Access-Control-Allow-Methods'] = 'GET,DELETE,UPDATE,HEAD,OPTIONS,POST,PUT,PATCH'
    header['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Authorization'
    header['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Authorization'

    logger.debug(response.__dict__)

    return response


def JsonStringToResponse(string : str) :
    return jsonify(json.loads(string))

def run() :
    global __server_process__
    __server_process__ = ServerThread(__app__,"0.0.0.0",8000)
    __server_process__.start()
    logger.info('View server started')


def stop() :
    global __server_process__
    __server_process__.shutdown()
    logger.info('View server stopped')


def register_blueprint(blueprint : flask.Blueprint) :
    assert isinstance(blueprint,flask.Blueprint)
    logger.info("registering view (blueprint) : '" + blueprint.name + "' with prefix '" + blueprint.url_prefix +"'")
    __app__.register_blueprint(blueprint)