#!/usr/bin/env python

import os, sys
import subprocess, shlex
from datetime import date, time, datetime
from dateutil.relativedelta import relativedelta

from app import app, db
from flask_script import Manager, Shell, Command
from flask_migrate import Migrate, MigrateCommand

def make_shell_context():
    from app.models import User, Role, Permission, Deployment
    return dict(app=app,
                db=db, 
                User=User, 
                Role=Role, 
                Permission=Permission, 
                Deployment=Deployment)

migrate = Migrate(app, db)

manager = Manager(app)
manager.add_command('shell', Shell(make_context=make_shell_context))
manager.add_command('db', MigrateCommand)

@manager.command
def deploy():
    """Run deployment tasks."""
    from flask_migrate import upgrade
    from app.models import Role, User

    # migrate database to latest revision
    upgrade()

    # create user roles
    Role.insert_roles()

@manager.command
def charge():
    from app.models import User, Deployment, Service, Domain

    today = datetime.utcnow()
    print('[1] Scan for active expired items and set them as inactive {}\n'.format(today))
    deployments_ena = Deployment.query.filter_by(enabled=True).all()
    for deploy in deployments_ena:
        lastcharge = deploy.date_last_charge
        expiry = lastcharge + relativedelta(lastcharge, months=+(deploy.period))
        if today > expiry:
            print('last charged: ' + lastcharge.strftime('%c') + 'expiry date: ' + expiry.strftime('%c'))
            print(deploy.machine_alias + ' is past expiration date and will be marked INACTIVE')
    services_ena = Service.query.filter_by(enabled=True).all()
    for service in services_ena:
        lastcharge = service.date_last_charge
        expiry = lastcharge + relativedelta(lastcharge, months=+(service.period))
        if today > expiry:
            print('last charged: ' + lastcharge.strftime('%c') + 'expiry date: ' + expiry.strftime('%c'))
            print('Service "' + service.description + '" is past expiration date and will be marked INACTIVE')
    for domain in domains_ena:
        expiry = domain.date_expire
        if today > expiry:
            print('last charged: ' + lastcharge.strftime('%c') + 'expiry date: ' + expiry.strftime('%c'))
            print('Domain "' + domain.fqdn + '" is past expiration date and will be marked as INACTIVE')

    today = datetime.utcnow()
    print('[2] Scan for items that will expire soon and try to autocharge them if they are not active. {}\n'.format(today))
    deployments_ena = Deployment.query.filter_by(enabled=True).all()
    for deploy in deployments_ena:
        lastcharge = deploy.date_last_charge
        expiry = lastcharge + relativedelta(lastcharge, months=+(deploy.period))
        daysleft = relativedelta(today, expiry).days()
        warn = deploy.period * 5
        print(daysleft)
        if daysleft < 10:
            print(deploy.machine_alias + ' is eligible for charging')
            print('last charged: ' + lastcharge.strftime('%c'))
            print('expiry date: ' + expiry.strftime('%c'))
            cpu_cost = deploy.machine_cpu * app.config['CPU_RATIO']
            mem_cost = ( deploy.machine_mem / 1024 ) * app.config['MEM_RATIO']
            hdd_cost = deploy.machine_hdd * app.config['HDD_RATIO']
            total = cpu_cost + mem_cost + hdd_cost
            print('total: ' + str(total))
    services_ena = Service.query.filter_by(enabled=True).all()
    for service in services_ena:
        lastcharge = service.date_last_charge
        expiry = lastcharge + relativedelta(lastcharge, months=+(service.period))
        if today > expiry:
            print(service.description + ' is eligible for charging')
            print('last charged: ' + lastcharge.strftime('%c'))
            print('expiry date: ' + expiry.strftime('%c'))
            cost = service.price
            print('total: ' + str(cost))
    domains_ena = Domain.query.filter_by(enabled=True).all()
    for domain in domains_ena:
        expire = domain.date_expire
        if expire - today < 60:
            daysleft = relativedelta(now, expire).days
            print(domain.fqdn + ' is expiring after ' + daysleft + '  for charging')
            print('expiry date: ' + expire.strftime('%c'))

@manager.command
def runserver():
    print('Starting Flask...')
    app.run()

if __name__ == '__main__':
    manager.run()