import requests
import json
import time
from datetime import datetime
from rowingdata import rowingdata
import pandas as pd
from rowers.models import Rower, Workout

from rowsandall_app.settings import FORECAST_IO_KEY


def get_weather_data(long,lat,unixtime):
#    url = "https://api.forecast.io/forecast/"+FORECAST_IO_KEY+"/"
    url = "https://api.darksky.net/forecast/"+FORECAST_IO_KEY+"/"
    url += str(long)+","+str(lat)+","+str(unixtime)

    s = requests.get(url)

    if s.ok:
	return s.json()
    else:
	return 0

def get_wind_data(lat,long,unixtime):
    data = get_weather_data(lat,long,unixtime)
    if data:
	try:
	    # we are getting wind in mph
	    windspeed = data['currently']['windSpeed']*0.44704
	    windbearing = data['currently']['windBearing']
	except KeyError:
	    windspeed = 0
	    windbearing = 0

	try:
	    airports = data['flags']['madis-stations']
	except KeyError:
	    airports = ['unknown']

	try:
	    temperature = data['currently']['temperature']
	    temperaturec = (temperature-32.)*(5./9.)
	    temperaturec = int(10*temperaturec)/10.
	except KeyError:
	    temperature = 'unknown'
	    temperaturec = 'unknown'

	try:
	    summary = data['currently']['summary']
	except KeyError:
	    summary = 'unknown'
    else:
	windspeed = 0
	windbearing = 0
	message = 'Not able to get weather data'

    # apply Hellman's coefficient for neutral air above human inhabitated areas
    windspeed = windspeed*(0.1)**0.34
    windspeed = 0.01*int(100*windspeed)
    
    timestamp = datetime.utcfromtimestamp(unixtime).isoformat()+'Z'

    message = 'Summary for your location at '+timestamp+': '+summary
    message += '. Temperature '+str(temperature)+'F/'+str(temperaturec)+'C'

    if data:
	message += '. Wind: '+str(windspeed)+' m/s. Wind Bearing: '+str(windbearing)+' degrees'


    return [windspeed,windbearing,message,airports,timestamp]