munter.py

   1 #! /usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4
   5 # Munter Time Calculation
   6 #
   7 # Rudimentary program written by ALV to implement the Munter time calculation
   8
   9 import sys
  10 import argparse
  11
  12 class InvalidUnitsException(Exception):
  13     pass
  14
  15 rates = {
  16     'uphill': { 'rate': 4, 'direction': '↑' },
  17     'flat': { 'rate': 6, 'direction': '→' }, # or downhill on foot
  18     'downhill': { 'rate': 10, 'direction': '↓' },
  19     'bushwhacking': { 'rate': 2, 'direction': '↹' },
  20 }
  21
  22 unit_choices = ['metric', 'imperial']
  23 travel_mode_choices = rates.keys()
  24
  25 def munter(distance, elevation, rate, units):
  26     retval = {}
  27
  28     if units not in unit_choices:
  29         raise InvalidUnitsException
  30
  31     unit_count = 0
  32
  33     if 'imperial' == units:
  34         # convert to metric
  35         distance = (distance * 1.609) # mi to km
  36         elevation = (elevation * .305) # ft to m
  37
  38     unit_count = distance + (elevation / 100.0)
  39
  40     retval['time'] = (distance + (elevation / 100.0)) / rates[rate]['rate']
  41     retval['unit_count'] = unit_count
  42     retval['direction'] = rates[rate]['direction']
  43     retval['pace'] = rates[rate]['rate']
  44
  45     return retval
  46
  47 def main():
  48     parser = argparse.ArgumentParser(description='Munter Time Calculation')
  49
  50     parser.add_argument('--distance', '-d', type=float,
  51         required=True,
  52         help='Distance (in km, by default)')
  53
  54     parser.add_argument('--elevation', '-e', type=float,
  55         required=True,
  56         help='Elevation change (in m, by default)')
  57
  58     parser.add_argument('--travel-mode', '-t', type=str,
  59         default='uphill',
  60         choices=travel_mode_choices, required=False,
  61         help='Travel mode (flat, by default)')
  62
  63     parser.add_argument('--units', '-u', type=str,
  64         default='imperial',
  65         required=False,
  66         choices=unit_choices,
  67         help='Units of input values')
  68
  69     opts = parser.parse_args()
  70
  71     distance = opts.distance
  72     elevation = opts.elevation
  73     units = opts.units
  74     travel_mode = opts.travel_mode
  75
  76     time_calc = munter(distance, elevation, travel_mode, units=units)
  77
  78     hours = int(time_calc['time'])
  79     minutes = int((time_calc['time'] - hours) * 60)
  80
  81     print("\n\t╒═══════════════════════════════╕")
  82     print("\t╎▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒╎╮")
  83     print("\t╎▒{:^29}▒╎│".format(''))
  84     print("\t╎▒{pace_readable:^31}▒╎│".format(
  85             pace_readable="{units} {direction} @ {pace}".format(
  86                 units=round(time_calc['unit_count']),
  87                 direction=time_calc['direction'],
  88                 pace=time_calc['pace'])))
  89     print("\t╎▒{human_time:^29}▒╎│".format(
  90             human_time="{hours} hours {minutes} minutes".format(
  91                 hours=hours,
  92                 minutes=minutes)))
  93     print("\t╎▒{:^29}▒╎│".format(''))
  94     print("\t╎▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒╎│")
  95     print("\t╘═══════════════════════════════╛│")
  96     print("\t └───────────────────────────────┘\n")
  97
  98 if __name__ == "__main__":
  99     main()