# -*- coding: utf-8 -*-
import random
from django.db import connection

def get_client_ip(request):
    x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
    if x_forwarded_for:
        ip = x_forwarded_for.split(',')[0]
    else:
        ip = request.META.get('REMOTE_ADDR')
    return ip

def get_by_sort(banner_list):
    max_sort = 0
    for banner in banner_list:
        sort = banner.sort
        if sort > max_sort:
            max_sort = sort
    result = [banner for banner in banner_list if banner.sort == max_sort]
    return result


def get_banner_by_params(banners_list, urls,  params):
    thematic_banners = []
    url_banners = []

    for banner in banners_list:
        # check by theme
        banner_theme_ids = [str(theme.id) for theme in banner.theme.all()]
        if banner_theme_ids:
            if params.get('theme'):
                theme = params['theme']

                flag = False
                for th in theme:
                    if th in banner_theme_ids:
                        flag = True
                if flag:
                    thematic_banners.append(banner)
                    continue
        # check by country
        banner_country_ids = [str(country.id) for country in banner.country.all()]
        #print('number of queries = %d'%len(connection.queries))
        if banner_country_ids:
            if params.get('country'):

                country = params['country']
                if country in banner_country_ids:
                    thematic_banners.append(banner)
                    continue

        # check by url
        if urls:
            banner_urls = banner.urls.all()
            print('number of queries = %d'%len(connection.queries))

            if banner_urls:

                banner_urls = set(banner_urls)
                common_urls = set(urls).intersection(banner_urls)

                if common_urls:
                    url_banners.append(banner)
                    continue

    if thematic_banners:
        return random.choice(thematic_banners)
    if url_banners:
        return random.choice(url_banners)
    return None

    #print('END. NUMBER of queries = %d'%len(connection.queries))

def get_top_events(tops, params):
    catalog = params.get('catalog')
    country = params.get('country', '')
    theme = params.get('theme', [])
    city = params.get('city', '')
    tag = params.get('tag', '')
    catalog_tops = [item for item in tops if item.catalog == catalog]
    good_tops = []
    for top in catalog_tops:

        country_ids = [str(item.id) for item in top.country.all()]
        theme_ids = [str(item.id) for item in top.theme.all()]
        excluded_tags_ids = [str(item.id) for item in top.excluded_tags.all()]
        excluded_cities_ids = [str(item.id) for item in top.excluded_cities.all()]
        if not country_ids and not theme_ids:
            # universal top
            good_tops.append(top)
            continue
        # check country
        if country in country_ids and city not in excluded_cities_ids :
            good_tops.append(top)
            continue
        # check theme
        if tag in excluded_tags_ids:
            continue
        flag = False
        for th in theme:
            if th in theme_ids:
                flag = True
                continue
        if flag:
            good_tops.append(top)
    sorted_top = sorted(good_tops, key=lambda x: x.position)
    events = []
    for top in sorted_top:
        event = top.get_event()
        if event:
            events.append(event)
    return events