import os
from flask import Flask, url_for
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager, UserMixin, login_user, login_required, logout_user, current_user

# init SQLAlchemy so we can use it later in our models
db = SQLAlchemy()

from lyrics import paginas, auth

def create_app():
    app = Flask(__name__)
    app.config.from_prefixed_env()

    app.config['SECRET_KEY'] = 'secret-key-goes-here'
    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///songs.db'
    app.config['UPLOAD_FOLDER'] = os.path.join(app.instance_path, 'uploads')
    
    app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # 16 MB máximo

    from .models import db

    db.init_app(app)

    login_manager = LoginManager()
    login_manager.login_view = 'auth.login'
    login_manager.init_app(app)


    from .models import User

    @login_manager.user_loader
    def load_user(user_id):
        # since the user_id is just the primary key of our user table, use it in the query for the user
        return User.query.get(int(user_id))

    from . import models

    with app.app_context():
        db.create_all()

#    basededatos.init_app(app)

    app.register_blueprint(paginas.bp)
    app.register_blueprint(auth.bp)


    print(f"Current Environment: {os.getenv('ENVIRONMENT')}")
    print(f"Using Database: {app.config.get('DATABASE')}")
    print(f"Directorio de uploads: {app.config.get('UPLOAD_FOLDER')}")
    print(f"instance: {app.instance_path}")

    return app