# coding=utf-8
from flask import Flask, jsonify
from flask_bcrypt import Bcrypt
from flask_cors import CORS
from flask_marshmallow import Marshmallow

from flask_sqlalchemy import SQLAlchemy
from flask_session import Session
from flask_login import LoginManager
from sqlalchemy.orm import sessionmaker
from werkzeug.routing import BaseConverter
from flask_mail import Mail

try:
    from local_settings import ApplicationConfig
except Exception as e:
    from settings import ApplicationConfig


app = Flask(__name__,
            static_url_path='',
            static_folder='static',
            template_folder='templates')


app.config.from_object(ApplicationConfig)

session = sessionmaker()

check_enviroment = ApplicationConfig.CURRENT_SETTINGS
print(f"starting server with {check_enviroment} settings")


class RegexConverter(BaseConverter):
    def __init__(self, url_map, *items):
        super(RegexConverter, self).__init__(url_map)
        self.regex = items[0]


app.url_map.converters['regex'] = RegexConverter
app.jinja_env.autoescape = True


# configuration
UPLOADED_FILES_DEST_ITEM = ApplicationConfig.UPLOADED_FILES_DEST_ITEM
UPLOADED_FILES_ALLOW = ApplicationConfig.UPLOADED_FILES_ALLOW
CURRENT_SETTINGS = ApplicationConfig.CURRENT_SETTINGS

app.config['UPLOADED_FILES_DEST_ITEM'] = ApplicationConfig.UPLOADED_FILES_DEST_ITEM
app.config['UPLOADED_FILES_ALLOW'] = ApplicationConfig.UPLOADED_FILES_ALLOW
app.config['MAX_CONTENT_LENGTH'] = ApplicationConfig.MAX_CONTENT_LENGTH
app.config['SESSION_COOKIE_NAME'] = ApplicationConfig.SESSION_COOKIE_NAME
app.config['SESSION_COOKIE_SECURE'] = ApplicationConfig.SESSION_COOKIE_SECURE
app.config['SESSION_COOKIE_HTTPONLY'] = ApplicationConfig.SESSION_COOKIE_HTTPONLY
app.config['SESSION_COOKIE_SAMESITE'] = ApplicationConfig.SESSION_COOKIE_SAMESITE
app.config['SESSION_PERMANENT'] = ApplicationConfig.SESSION_PERMANENT
app.config['SESSION_USE_SIGNER'] = ApplicationConfig.SESSION_USE_SIGNER
app.config['ORIGIN_URL'] = ApplicationConfig.ORIGIN_URL
app.config['CURRENT_SETTINGS'] = ApplicationConfig.CURRENT_SETTINGS
app.config['SECRET_KEY'] = ApplicationConfig.SECRET_KEY

session.configure(bind=ApplicationConfig.SQLALCHEMY_DATABASE_URI)
db = SQLAlchemy(app)
bcrypt = Bcrypt(app)
server_session = Session(app)
ma = Marshmallow(app)
mail = Mail(app)


login_manager = LoginManager(app)
login_manager.session_protection = 'strong'
login_manager.anonymous_user = "Guest"


@login_manager.request_loader
def load_user_from_request(request):
    from app.classes.auth import Auth_User
    # first, try to log in using the api_key url arg
    api_key = request.args.get('api_key')
    if api_key:
        user = db.session\
            .query(Auth_User)\
            .filter_by(api_key=api_key)\
            .first()
        if user:
            return user
    # next, try to log in using Basic Auth
    api_key_auth = request.headers.get('Authorization')
    if api_key_auth:
        api_key = api_key_auth.replace('bearer ', '', 1)
        if api_key.startswith('"') and api_key.endswith('"'):
            api_key = api_key[1:-1]
        user = db.session\
            .query(Auth_User)\
            .filter_by(api_key=api_key)\
            .first()
        if user:
            return user
    return None


api_main = {
    "origins": [ApplicationConfig.ORIGIN_URL],
    "methods": ["GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS", "HEAD"],
    "allow_headers": ['Authorization', 'application/json', 'authorization', 'Content-Type',
                      'Access-Control-Allow-Headers', 'Origin,Accept',
                      'X-Requested-With', 'Content-Type', 'Access-Control-Request-Method', 
                      'Access-Control-Request-Headers']
}
cors = CORS(app,  supports_credentials=True, resources={r'/*': api_main})


# bind a function after each request, even if an exception is encountered.
@app.teardown_request
def teardown_request(error):
    db.session.remove()


@app.teardown_appcontext
def teardown_appcontext(error):
    db.session.remove()


@app.errorhandler(500)
def internal_error500():
    return jsonify({"error": "Internal Error 500"}), 500


@app.errorhandler(502)
def internal_error502():
    return jsonify({"error": "Internal Error 502"}), 502


@app.errorhandler(404)
def internal_error404():
    return jsonify({"error": "Internal Error 400"}), 400


@app.errorhandler(401)
def internal_error404():
    return jsonify({"error": "Internal Error 401"}), 401


@app.errorhandler(400)
def internal_error400():
    return jsonify({"error": "Internal Error 400"}), 400


@app.errorhandler(413)
def to_large_file():
    return jsonify({"error": "File is too large.  Use a smaller image/file."}), 413


@app.errorhandler(403)
def internal_error403():
    return jsonify({"error": "Internal Error 403"}), 403


@app.errorhandler(405)
def internal_error():
    return jsonify({"error": "Internal Error 405"}), 405


# link locations
from .admin import admin as admin_blueprint
app.register_blueprint(admin_blueprint, url_prefix='/admin')

from .main import main as main_blueprint
app.register_blueprint(main_blueprint, url_prefix='/main')

from .customer import customer as customer_blueprint
app.register_blueprint(customer_blueprint, url_prefix='/customer')


from .delivery import delivery as delivery_blueprint
app.register_blueprint(delivery_blueprint, url_prefix='/delivery')

from .delivery_data import delivery_data as delivery_data_blueprint
app.register_blueprint(delivery_data_blueprint, url_prefix='/deliverydata')

from .delivery_status import deliverystatus as delivery_status_blueprint
app.register_blueprint(delivery_status_blueprint, url_prefix='/deliverystatus')

from .search import search as search_blueprint
app.register_blueprint(search_blueprint, url_prefix='/search')

from .reports import reports as reports_blueprint
app.register_blueprint(reports_blueprint, url_prefix='/report')

from .query import query as query_blueprint
app.register_blueprint(query_blueprint, url_prefix='/query')

from .payment import payment as payment_blueprint
app.register_blueprint(payment_blueprint, url_prefix='/payment')

from .auth import auth as auth_blueprint
app.register_blueprint(auth_blueprint, url_prefix='/auth')

from .employees import employees as employees_blueprint
app.register_blueprint(employees_blueprint, url_prefix='/employee')

from .info import info as info_blueprint
app.register_blueprint(info_blueprint, url_prefix='/info')

from .stats import stats as stats_blueprint
app.register_blueprint(stats_blueprint, url_prefix='/stats')

with app.app_context():
    db.configure_mappers()
    db.create_all()
    db.session.commit()