from __future__ import unicode_literals
import argparse
import csv
from geopy.distance import vincenty

FILE = "blue.csv"
ORIGIN = (-72.4796155,48.8544492)


def find_pts(filename):
    """function """
    try:
        fd = open(filename, "r")
        data = csv.reader(fd)
        last_pts = None

        for row in data:
            if len(row) > 2:
                pts = (float(row[-2]), float(row[-1]))
                print("> {:=7.3f}Km,    {}, {}".format(vincenty(pts, ORIGIN).km, pts[0], pts[1] ))

                if last_pts:
                    print("     {:.3f}m".format(vincenty(last_pts, pts).meters))
                else:
                    print("")
                last_pts = pts
    except IOError as e:
        print(e)
    except TypeError as e:
        print(e)















if __name__ == "__main__":
    # parser = argparse.ArgumentParser(description='Find the closest GPS point.')
    # parser.add_argument('-f', metavar='FILENAME', type=str, nargs='+',
    #                    help='Filename of CSV file')
    # args = parser.parse_args()
    # print(args.accumulate(args.integers))

    find_pts(FILE)