# -*- coding: utf-8 -*-

"""
data_platform_api
~~~~~~~~~~~~~~~~~

This module handle the data platform api request, query equipment data, creat alarm and so on.
"""

import datetime
import logging

import redis
import requests
from requests import exceptions

logger = logging.getLogger(__name__)

pool = redis.ConnectionPool(host='172.16.34.43', port=6379, db=12, password='deepsaga', decode_responses=True)
r = redis.Redis(connection_pool=pool)

DATA_PLATFORM_SERVER = 'http://api.sagacloud.cn/data-platform-3/'
ALARM_SERVER = 'http://47.93.33.207:8890/alarm-system/'


class PlatformRequest:
    """The Base Request for Platform"""

    def __init__(self, server, url, params, payload, timeout=5):
        self._url = server + url
        self._params = params
        self._payload = payload
        self._timeout = timeout

    def send_request(self):
        result = dict()
        try:
            response = requests.post(self._url, params=self._params, json=self._payload, timeout=self._timeout)
        except exceptions as e:
            raise Exception(f'Could not connect to platform server {e}')
        else:
            if response.status_code == 200:
                result = response.json()
            else:
                logger.info(f'request error {response.status_code}, {response.reason}')
        finally:
            return result


def query_real_time_data(project_id, equip_id, code_list):
    url = 'parameter/batch_query_param'
    params = {
        'projectId': project_id,
        'secret': 'saga123456'
    }
    request_param_list = [{'id': equip_id, 'code': item} for item in code_list]
    payload = {
        'criterias': request_param_list
    }
    porter = PlatformRequest(DATA_PLATFORM_SERVER, url, params, payload)
    raw_result = porter.send_request()
    result = {item.get('code'): item.get('data') for item in raw_result.get('Content')}

    return result


def query_history_time_data(project_id, equip_id, code, period):
    url = 'hisdata/query_by_obj'
    from_time = (datetime.datetime.now() - datetime.timedelta(minutes=period)).strftime('%Y%m%d%H%M%S')
    params = {
        'projectId': project_id,
        'secret': 'saga123456'
    }
    payload = {
        'criteria': {
            'id': equip_id,
            'code': code,
            'receivetime': {
                '$gte': from_time
            }
        }
    }
    porter = PlatformRequest(DATA_PLATFORM_SERVER, url, params, payload)
    raw_result = porter.send_request()
    result = [item.get('data') for item in raw_result.get('Content')]

    return result


def send_alarm(project_id, object_id, type_code, description):
    url = 'alarm/create'
    params = {
        'projectId': project_id,
        'secret': 'saga123456'
    }
    time_stamp = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
    payload = {
        'status': 'alarm',
        'objects': [object_id],
        'ctime': time_stamp,
        'level': 'S',
        'type_code': type_code,
        'description': description
    }
    porter = PlatformRequest(ALARM_SERVER, url, params, payload)
    raw_result = porter.send_request()
    result = raw_result.get('id')
    logger.info(f'Send alarm: {result}')

    save_alarm_info(project_id, object_id, result, time_stamp)

    return result


def is_alarmed(project_id, object_id, alarm_type):
    logger.info(f'Try to send alarm - {object_id}')
    url = 'alarm/query'
    params = {
        'projectId': project_id,
        'secret': 'saga123456'
    }
    from_time = (datetime.datetime.now() - datetime.timedelta(minutes=30)).strftime('%Y%m%d%H%M%S')
    payload = {
        'criteria': {
            'object': object_id,
            'type_code': alarm_type,
            'ctime': {
                '$gte': from_time
            }
        },
    }
    porter = PlatformRequest(ALARM_SERVER, url, params, payload)
    raw_result = porter.send_request()
    flag = False
    for item in raw_result.get('Content'):
        if 'alarm' == item.get('status'):
            flag = True

    return flag


def recover_alarm(project_id, alarm_id):
    url = 'alarm/batchRecover'
    params = {
        'projectId': project_id,
        'secret': 'saga123456'
    }
    payload = {
        'alarmId': [alarm_id]
    }
    porter = PlatformRequest(ALARM_SERVER, url, params, payload)
    raw_result = porter.send_request()
    logger.info(f'Recover alarm: {alarm_id}')

    return raw_result.get('Result')


def save_alarm_info(project_id, object_id, alarm_id, time_stamp):
    name = f'alarm_{project_id}_{object_id}'
    r.hset(name, alarm_id, time_stamp)


def query_redis_alarm(project_id, object_id):
    name = f'alarm_{project_id}_{object_id}'
    result = r.hgetall(name)

    return result