# coding:utf-8
from django.core.cache import cache

import common.error_info as cei

MAX_ERROR_TIMES = 5
MAX_ERROR_TIMES_IP = 20
LOCK_IP_TMP = 'LOCK_IP_{}'
LOCK_ACCOUNT_TMP = 'LOCK_ACCOUNT_{}'

ACCOUNT_INCR_TMP = 'ACCOUNT_COUNT_{}'
IP_INCR_TMP = 'IP_COUNT_{}'


def is_lock(uid, ip):
    """
    是否锁
    :param uid:
    :param ip:
    :return:
    """
    account_key = LOCK_ACCOUNT_TMP.format(uid)
    ip_key = LOCK_IP_TMP.format(ip)

    if cache.get(ip_key):
        return "ip_lock"
    if cache.get(account_key):
        return "account_lock"
    return False

def is_lock_ip(ip):
    """是否封禁IP
    """
    ip_key = LOCK_IP_TMP.format(ip)
    if cache.get(ip_key):
        return True
    return False


def increase_error_count(uid, ip):
    """
    5分钟内连续输错五次
    :return:
    """
    ip_key = IP_INCR_TMP.format(ip)
    ip_count = cache.get(ip_key) or 0

    account_key = ACCOUNT_INCR_TMP.format(uid)
    account_count = cache.get(account_key) or 0

    if account_count + 1 >= MAX_ERROR_TIMES or ip_count + 1 >= MAX_ERROR_TIMES:
        lock(uid, ip)
        raise cei.TipException(u'密码连续输错五次，锁定ip和账户半个小时')
    if not account_count:
        cache.set(account_key, 1, 5*60)
    else:
        cache.incr(account_key)
    if not ip_count:
        cache.set(ip_count, 1, 5*60)
    else:
        cache.incr(ip_key)

def increase_error_count_ip(ip):
    """
    """
    ip_key = IP_INCR_TMP.format(ip)
    ip_count = cache.get(ip_key) or 0
    if ip_count + 1 >= MAX_ERROR_TIMES_IP:
        lock(0,ip)
        raise cei.TipException(u'密码连续输错20次，锁定ip半个小时!')
    if not ip_count:
        cache.set(ip_key, 1, 30*60)
    else:
        cache.incr(ip_key)

def increase_error_count_uid(uid):
    """
    """
    account_key = ACCOUNT_INCR_TMP.format(uid)
    account_count = cache.get(account_key) or 0
    if account_count + 1 >= MAX_ERROR_TIMES:
        lock(uid,0)
        raise cei.TipException(u'密码连续输错5次，锁定账户10分钟!')
    if not account_count:
        cache.set(account_key, 1, 10*60)
    else:
        cache.incr(account_key)



def clear_lock_count(uid, ip):
    """
    清除计数，清楚锁ip，锁account的key
    :param uid:
    :param ip:
    :return:
    """
    if uid:
        cache.delete(ACCOUNT_INCR_TMP.format(uid))
    if ip:
        cache.delete(IP_INCR_TMP.format(ip))


def lock(uid, ip):
    """
    锁账户，ip半个小时
    :param uid:
    :param ip:
    :return:
    """
    clear_lock_count(uid, ip)
    if uid:
        key = LOCK_ACCOUNT_TMP.format(uid)
        cache.set(key, 'lock_account', 10*60)
    if ip:
        key = LOCK_IP_TMP.format(ip)
        cache.set(key, 'lock_ip', 30*60)

def clear_lock(uid,ip):
    clear_lock_count(uid, ip)
    if uid:
        key = LOCK_ACCOUNT_TMP.format(uid)
        cache.delete(key)
    if ip:
        key = LOCK_IP_TMP.format(ip)
        cache.delete(IP_INCR_TMP.format(ip))