presence.py

   1 #!/usr/bin/env python3
   2
   3 import datetime
   4 from collections import defaultdict
   5 import enum
   6 import logging
   7 import re
   8 import sys
   9 from typing import Dict, List
  10
  11 import argparse_utils
  12 import bootstrap
  13 import config
  14 import dict_utils
  15 import exec_utils
  16
  17 logger = logging.getLogger(__name__)
  18
  19 cfg = config.add_commandline_args(
  20     f"Presence Detection ({__file__})",
  21     "Args related to detection of human beings in locations.",
  22 )
  23 cfg.add_argument(
  24     "--presence_macs_file",
  25     type=argparse_utils.valid_filename,
  26     default = "/home/scott/cron/persisted_mac_addresses.txt",
  27     metavar="FILENAME",
  28     help="The location of persisted_mac_addresses.txt to use."
  29 )
  30
  31
  32 class Person(enum.Enum):
  33     UNKNOWN = 0
  34     SCOTT = 1
  35     LYNN = 2
  36     ALEX = 3
  37     AARON_AND_DANA = 4
  38     AARON = 4
  39     DANA = 4
  40
  41
  42 @enum.unique
  43 class Location(enum.Enum):
  44     UNKNOWN = 0
  45     HOUSE = 1
  46     CABIN = 2
  47
  48
  49 class PresenceDetection(object):
  50     def __init__(self) -> None:
  51         # Note: list most important devices first.
  52         self.devices_by_person: Dict[Person, List[str]] = {
  53             Person.SCOTT: [
  54                 "3C:28:6D:10:6D:41",
  55                 "D4:61:2E:88:18:09",
  56                 "6C:40:08:AE:DC:2E",
  57                 "14:7D:DA:6A:20:D7",
  58             ],
  59             Person.LYNN: [
  60                 "08:CC:27:63:26:14",
  61                 "B8:31:B5:9A:4F:19",
  62             ],
  63             Person.ALEX: [
  64                 "0C:CB:85:0C:8B:AE",
  65                 "D0:C6:37:E3:36:9A",
  66             ],
  67             Person.AARON_AND_DANA: [
  68                 "98:B6:E9:E5:5A:7C",
  69                 "D6:2F:37:CA:B2:9B",
  70                 "6C:E8:5C:ED:17:26",
  71                 "90:E1:7B:13:7C:E5",
  72                 "6E:DC:7C:75:02:1B",
  73                 "B2:16:1A:93:7D:50",
  74                 "18:65:90:DA:3A:35",
  75                 "22:28:C8:7D:3C:85",
  76                 "B2:95:23:69:91:F8",
  77                 "96:69:2C:88:7A:C3",
  78             ],
  79         }
  80         self.location_ts_by_mac: Dict[
  81             Location, Dict[str, datetime.datetime]
  82         ] = defaultdict(dict)
  83         self.names_by_mac: Dict[str, str] = {}
  84         persisted_macs = config.config['presence_macs_file']
  85         self.read_persisted_macs_file(persisted_macs, Location.HOUSE)
  86         raw = exec_utils.cmd(
  87             "ssh [email protected] 'cat /home/scott/cron/persisted_mac_addresses.txt'"
  88         )
  89         self.parse_raw_macs_file(raw, Location.CABIN)
  90         # os.remove(filename)
  91
  92     def read_persisted_macs_file(
  93         self, filename: str, location: Location
  94     ) -> None:
  95         if location is Location.UNKNOWN:
  96             return
  97         with open(filename, "r") as rf:
  98             lines = rf.read()
  99         self.parse_raw_macs_file(lines, location)
 100
 101     def parse_raw_macs_file(self, raw: str, location: Location) -> None:
 102         lines = raw.split("\n")
 103
 104         # CC:F4:11:D7:FA:EE, 2240, 10.0.0.22 (side_deck_high_home), Google, 1611681990
 105         for line in lines:
 106             line = line.strip()
 107             if len(line) == 0:
 108                 continue
 109             logger.debug(f'{location}> {line}')
 110             try:
 111                 (mac, count, ip_name, mfg, ts) = line.split(",")
 112             except Exception as e:
 113                 logger.error(f'SKIPPED BAD LINE> {line}')
 114                 logger.exception(e)
 115                 continue
 116             mac = mac.strip()
 117             (self.location_ts_by_mac[location])[
 118                 mac
 119             ] = datetime.datetime.fromtimestamp(int(ts.strip()))
 120             ip_name = ip_name.strip()
 121             match = re.match(r"(\d+\.\d+\.\d+\.\d+) +\(([^\)]+)\)", ip_name)
 122             if match is not None:
 123                 name = match.group(2)
 124                 self.names_by_mac[mac] = name
 125
 126     def is_anyone_in_location_now(self, location: Location) -> bool:
 127         for person in Person:
 128             if person is not None:
 129                 loc = self.where_is_person_now(person)
 130                 if location == loc:
 131                     return True
 132         return False
 133
 134     def where_is_person_now(self, name: Person) -> Location:
 135         if name is Person.UNKNOWN:
 136             return Location.UNKNOWN
 137         votes: Dict[Location, int] = {}
 138         tiebreaks: Dict[Location, datetime.datetime] = {}
 139         credit = 10000
 140         for mac in self.devices_by_person[name]:
 141             if mac not in self.names_by_mac:
 142                 continue
 143             for location in self.location_ts_by_mac:
 144                 if mac in self.location_ts_by_mac[location]:
 145                     ts = (self.location_ts_by_mac[location])[mac]
 146                     tiebreaks[location] = ts
 147             location = dict_utils.key_with_min_value(tiebreaks)
 148             v = votes.get(location, 0)
 149             votes[location] = v + credit
 150             credit = int(
 151                 credit * 0.667
 152             )  # Note: list most important devices first
 153             if credit == 0:
 154                 credit = 1
 155         if len(votes) > 0:
 156             item = dict_utils.item_with_max_value(votes)
 157             return item[0]
 158         return Location.UNKNOWN
 159
 160
 161 @bootstrap.initialize
 162 def main() -> None:
 163     config.parse()
 164     p = PresenceDetection()
 165
 166     for loc in Location:
 167         print(f'{loc}: {p.is_anyone_in_location_now(loc)}')
 168
 169     for u in Person:
 170         print(f'{u}: {p.where_is_person_now(u)}')
 171     sys.exit(0)
 172
 173
 174 if __name__ == '__main__':
 175     main()