import pytest
import requests
from LatLon23 import LatLon
from geopy import distance
from math import isclose

FLOCK_SERVER="http://127.0.0.1:5000"

UACM = (19.37425,-99.17168)

points = [
    (19.37634,-99.12660),  # playa pie de la cuesta y mirador
    (19.37521,-99.11923),  # antropólogos y cardiólogos
    (19.37521,-99.11923),  # antropólogos y cardiólogos    
]

bikes = []

from pymongo import MongoClient

client = MongoClient()
db = client.test
col = db["bike"] 
d = col.delete_many({})
print(d)


def flip(coord):
    return (coord[1], coord[0])

def as_tuple(coord):
    """
    Return LatLon point as (lat, lon) tuple
    """
    return (float(coord.lat),
            float(coord.lon))


class Bike(dict):

    def server_register(self, dest):
        self['dest'] = dest
        
        register_url = "{server}/register/?dest_lon={dest_lon}&dest_lat={dest_lat}"
        r = requests.get(register_url.format(server=FLOCK_SERVER,
                                             dest_lon=dest[1],
                                             dest_lat=dest[0]))
        out = r.json()
        
        self.update({'bike_id': out['bike_id'], })
                     # "flock_avg_speed":3.5,
                     # "flock_distance":0.2105884044243021,
                     # "flock_heading":71.99999999869847,
                     # "flock_size": out['flock_size']})


    def server_update(self):    
        update_url = "{server}/update/{bike_id}/?lat={lat}&lon={lon}&speed={speed}&bearing={bearing}"
        req = requests.get(update_url.format(server=FLOCK_SERVER,
                                             bike_id=self['bike_id'],
                                             speed=self['speed'],
                                             bearing=self['bearing'],
                                             lat=self['lat'], 
                                             lon=self['lon']))
        resp = req.json()
        self.update(resp)
        

def test_register():
    global bikes


    for i, p in enumerate(points):
        # bikes will be bound north (90 degrees), 10km away
        t0 = LatLon(*p)
        t1 = t0.offset(90, 10)
    
        bikes.append(Bike())
        bikes[i].server_register(dest=as_tuple(t1))

        assert 'bike_id' in bikes[i]



def test_update():
    """
    test update with coords, which are points of origin for
    our test bikes.
    """
    global bikes

    for i, p in enumerate(points):
        t0 = LatLon(*p)
        bearing = t0.heading_initial(LatLon(*bikes[i]['dest']))
    
        bikes[i].update(
            {'speed': 3,
             'bearing': bearing,
             'lat': p[0],
             'lon': p[1],
            })
    
        bikes[i].server_update()

        assert isclose(bikes[i]['bearing'], 90)



def test_flock_forward():
    """
    Bike 1 is closely followed by 2. Bike 1 updates at t=0, bike 2
    twenty seconds later.

    test for proper distances, flock heading, dest heading, etc.
    """
    global bikes

    # 
    t0 = LatLon(*points[0])
    t1 = t0.offset(45, 1)
    
    bikes[0].update(
        {'speed': 3,
         'bearing': t0.heading_initial(t1),
         'lat': t1.lat,
         'lon': t1.lon,
        })
    
    bikes[0].server_update()

    print(bikes)

    #b2.server_update(lat, lon, speed, bearing)    
    
    assert True