#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
    demeter database
    name:data.py
    author:rabin
"""
from __load__ import *

class Data(Model):
	__table__ = 'data'

	def setTable(self, data):
		self.table = self.__table__ + '_' + str(data['farm']) + '_' + str(data['device']) + '1'

	def insert(self, data):
		self.setTable(data)
		json = self.insert_json(data)
		self.db.write_points(json)

	def insert_json(self, data):
		json = [
		{
			"measurement": self.table,
			"tags": {
				"hard": data['hard'],
				"type":data['type'],
				"gateway": data['gateway']
			},
			#"time": data['time'],
			"fields": {
				'source' : int(data['source']),
				'value' : int(data['value'])
			}
		}]
		return json

	def select(self, farm, device, type=None, hard=None, gateway=None, value=None, search=None):
		data = {}
		data['farm'] = farm
		data['device'] = device
		self.setTable(data)
		where = []
		if type:
			where.append('type = \'' + type + '\'')
		if hard:
			where.append('hard = \'' + hard + '\'')
		if gateway:
			where.append('gateway = \'' + gateway + '\'')
		if search:
			for value in search:
				where.append(value)
		if where:
			where = ' where ' + " and ".join(where)
		#group by time(30m) where time > now() – 1d 30分钟聚合，大于昨天的数据 1d 1h
		sql = 'select value from ' + self.table + where
		data = self.db.query(sql)
		return [value for value in data.raw['series'][0]['values']]