import os
import tomllib

from flask import Flask
from flask_bcrypt import Bcrypt
from flask_login import LoginManager
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from flask_wtf.csrf import CSRFProtect

APP = Flask(__name__, static_folder="static")
db = SQLAlchemy()
migrate = Migrate()
bcrypt = Bcrypt()
login_manager = LoginManager()


def create_app():
    APP.secret_key = os.urandom(24)
    APP.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///distribusiverse.db"
    APP.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = True
    APP.config["MAX_CONTENT_LENGTH"] = 1024 * 1024 * 1024

    APP.config["MAIL_SERVER"] = "mail.autonomic.zone"
    APP.config["MAIL_PORT"] = 587
    APP.config["MAIL_USE_SSL"] = False
    APP.config["MAIL_USE_TLS"] = True
    APP.config["MAIL_USERNAME"] = "noreply@vvvvvvaria.org"

    login_manager.session_protection = "strong"
    login_manager.login_view = "index"
    login_manager.login_message_category = "info"

    csrf = CSRFProtect()

    APP.config["SECRET_KEY"] = os.urandom(24)
    APP.config["UPLOAD_FOLDER"] = "tmpupload"
    APP.config["PUBLIC_THEMES"] = "themes/publicthemes"

    # user settings_file
    settings()

    csrf.init_app(APP)
    login_manager.init_app(APP)
    db.init_app(APP)
    migrate.init_app(APP, db, render_as_batch=True)
    bcrypt.init_app(APP)

    @APP.context_processor
    def inject_title():
        return dict(title=APP.config["title"])

    return APP


def settings():
    settings = settings_from_file()
    APP.config.update(settings)
    return APP


def get_app():
    return APP


def settings_from_file():
    settings = {}
    if os.path.isfile("settings_development.toml"):
        with open("settings_development.toml", "rb") as settings_file:
            return tomllib.load(settings_file)
    with open("settings.toml", "rb") as settings_file:
        return tomllib.load(settings_file)