"""The accountant package."""

# vim: set tw=80 ts=4 sw=4 sts=4:

import click

from flask import Flask

from flask_alembic import Alembic
from flask_alembic import alembic_click

from .models import db
from .views import api, cors, jwt

# pylint: disable=invalid-name
alembic = Alembic()


def create_app(config_path):
    """Create the app using specific config file."""
    # The app
    app = Flask(__name__, static_folder=None, template_folder=None)

    # Configure it from configuration file.
    app.config.from_pyfile(config_path)

    # Database related stuff.
    app.config['SQLALCHEMY_ECHO'] = app.debug
    app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True

    db.init_app(app)

    alembic.init_app(app)

    # API views related stuff.
    cors.init_app(app)
    api.init_app(app)
    jwt.init_app(app)
    # Needed to handle correctly JWT exceptions by restplus.
    jwt._set_error_handler_callbacks(api)  # pylint: disable=protected-access

    return app


# Database initialization.
@alembic_click.command()
def initdb():
    """ Create the database ans stamp it. """
    click.echo("Creating database.")
    db.metadata.create_all(bind=db.engine)
    click.echo("Stamping database.")
    alembic.stamp()
    click.echo("Database created.")


@alembic_click.command()
def dropdb():
    """Clear database schema. USE CAREFULLY!!"""
    click.echo("Clearing database.")
    db.metadata.drop_all(bind=db.engine)
    click.echo("Database cleared.")