"""General function module"""

import random
from datetime import datetime, timedelta

from app import LOGGER, SCHEDULER, RESOURCE_IDS, RESOURCE_MAX, jobs, api


def check_resources(resource_id):
    """Check resources and refill if necessary"""
    regions = api.download_resources(resource_id)
    LOGGER.info('Check resource %s', RESOURCE_IDS[resource_id])
    print_resources(regions, resource_id)
    refill_percentage = 25
    if need_refill(regions, refill_percentage):
        max_seconds = max_refill_seconds(regions, refill_percentage, 900)
        random_seconds = random.randint(0, max_seconds)
        random_time_delta = timedelta(seconds=random_seconds)
        scheduled_date = datetime.now() + random_time_delta
        job_id = 'refill_{}'.format(resource_id)
        LOGGER.info(
            'Refill resource %s at %s (%s minutes)', RESOURCE_IDS[resource_id],
            scheduled_date, round(random_time_delta.seconds / 60)
        )
        SCHEDULER.add_job(
            jobs.refill_resource,
            'date',
            args=[resource_id],
            id=job_id,
            run_date=scheduled_date,
            replace_existing=True
        )

def print_resources(regions, resource_id):
    """print resources"""
    if regions:
        LOGGER.info('----- %s region(s)', len(regions))
        LOGGER.info('region                        expl max   D left    c %    t %')
        for region in regions.values():
            region['explored_percentage'] = 100 / region['maximum'] * region['explored']
            region['total_left'] = region['explored'] + region['limit_left']
            region['total_percentage'] = 100 / RESOURCE_MAX[resource_id] * region['total_left']
            row = '{:25}: {:7.2f}{:4}{:4}{:5}{:7.2f}{:7.2f}'.format(
                region['region_name'], region['explored'], region['maximum'],
                region['deep_exploration'], region['limit_left'],
                region['explored_percentage'], region['total_percentage']
            )
            LOGGER.info(row)
        LOGGER.info('-----')

    else:
        LOGGER.error('no region to print data')

def need_refill(regions, limit):
    """Check if refill is needed"""
    for region in regions.values():
        percentage = 100 / region['maximum'] * region['explored']
        if percentage < limit and region['limit_left']:
            return True
    return False

def max_refill_seconds(regions, limit, max_time):
    """Give random seconds for next refill"""
    lowest_percentage = limit
    for region in regions.values():
        percentage = 100 / region['maximum'] * region['explored']
        if percentage < lowest_percentage:
            lowest_percentage = percentage
    return int(max_time / limit * lowest_percentage)