#!/usr/bin/env python3
from influxdb import InfluxDBClient
import datetime
import time
import sqlite3 as lite
import argparse

def main(host='localhost', port=8086, user='root', password='root', dbname='demo', dbfile='demo.db'):
    """Instantiate the connection to the InfluxDB client."""

    db = InfluxDBClient(host, port, user, password, dbname)
    measurements = db.get_list_measurements()
    if measurements != []:
        lastentry = db.query('SELECT LAST("steps") FROM "steps"')

        points = lastentry.get_points('steps')
        lastdate = list(points)[0]['time']
        ts = time.mktime(datetime.datetime.strptime(lastdate, '%Y-%m-%dT%H:%M:%SZ').timetuple())
    else:
        ts=0
        lastdate=0

    print("last entry is %s, ts is %s" % (lastdate,ts))

    con = lite.connect(dbfile)
    with con:

        cur = con.cursor()
        cur.execute("SELECT recordedForDate,steps,distanceInMeters,activeTimeInSeconds,calories FROM dailyActivityLog WHERE recordedForDate > %s" %ts)

        while True:

            row = cur.fetchone()
            if row == None:
                break
            mytime = datetime.datetime.fromtimestamp(row[0]).strftime('%Y-%m-%dT%H:%M:%SZ')
            data = [
                   {"measurement":"steps",
                    "time":mytime,
                    "fields": {
                              "steps":row[1],
                              "distanceInMeters":row[2],
                              "activeTimeInSeconds":row[3],
                              "calories":row[4]
                    }
                }
                ]

            #print(data)
            db.write_points(data)
            db.close()

def parse_args():
    """Parse the args from main."""
    parser = argparse.ArgumentParser(
        description='Export Pacer data to InfluxDB')
    parser.add_argument('--host', type=str, required=False,
                        default='localhost',
                        help='hostname of InfluxDB http API')
    parser.add_argument('--user', type=str, required=False,
                        default='root',
                        help='username for InfluxDB http API')
    parser.add_argument('--password', type=str, required=False,
                        default='root',
                        help='passworid for InfluxDB http API')
    parser.add_argument('--port', type=int, required=False, default=8086,
                        help='port of InfluxDB http API')
    parser.add_argument('--dbname', type=str, required=True, default='demo',
                        help='InfluxDB database name')
    parser.add_argument('--dbfile', type=str, required=True, default='demo.db',
                        help='sqlite (pacer) database name')
    return parser.parse_args()


if __name__ == '__main__':
    args = parse_args()
main(host=args.host, port=args.port, user=args.user, password=args.password, dbname=args.dbname, dbfile=args.dbfile)