#!/bin/bash

# Report NWS (USA) Conditions at KPTD and figlet them! 
# It runs as a cron job every 10 minutes.
# Written by Tim on gopher://tildecow.com
# See my about.txt and drop me a line to say "Hi"!

# Grab the site we get data from as a string
a=$(lynx -dump https://tgftp.nws.noaa.gov/weather/current/KPTD.html)

# TIME
time=$(date +"%I:%M %p")

# CONDITIONS
con=${a##*Sky conditions }       # Remove the left part.
con=${con%%\ Temperature*}       # Remove the right part.
con=$(echo "$con" | tr -s " ")   # This var has weird extra whitespace

# WIND
wind=${a##*degrees) at }   # Remove the left part.
wind=${wind%%\ MPH*}       # Remove the right part.

# DIRECTION
from=${a##*Wind from the }   # Remove the left part.
from=${from%%\ (*}       # Remove the right part.
from=$(echo "$from" | tr -s " ")

# TEMPERATURE
temp=${a##*Temperature }   # Remove the left part.
temp=${temp%%\ F (*}       # Remove the right part.

# HUMIDITY
hum=${a##*Humidity }   # Remove the left part.
hum=${hum%%\%*}       # Remove the right part.

# PRESSURE
pres=${a##*(altimeter) }   # Remove the left part.
pres=${pres%%\ in. Hg*}       # Remove the right part.

# Need pressure units
presunits='"' 

# I discovered (when the temp went below zero) that I
# had to send all the output to a file frst or else 
# figlet took the minus temperature as a command option
# and crashed!
echo -n " $time and ${con^}" > .temp.wx | tr '\n' ' '

# Originally I just displayed the second line including $wind
# speed. Then one day the original file said "Wind Calm"
# and bolluxed up everything. Hence this 'patch'
if echo "$a" | grep -q "Wind Calm"; then
   echo "It's $temp F with calm winds" >> .temp.wx
else
   echo "It's $temp F with $wind MPH winds" >> .temp.wx
fi

echo " Humidity is $hum % with the" >> .temp.wx
echo " barometer reading $pres $presunits" >> .temp.wx
figlet -w 120 -f small < .temp.wx > /var/gopher/weather

# For reference, here is what the data I pull looks like in the raw...

#   [7]NWS Point Forecast for KPTD (
#   _______________________________________________________________________
#
#   Conditions at [Dec 19, 2019 - 06:55 PM EST]
#   2019.12.19 2355 UTC
#   Wind from the SSW (200 degrees) at 7 MPH (6 KT)
#****NOTE**** THOUGH SOMETIMES THE PREVIOUS LINE JUST SAYS "Wind Calm" -Tim
#   Visibility 10 mile(s)
#   Sky conditions mostly cloudy
#   Temperature 0 F (-18 C)
#   Windchill -13 F (-25 C)
#   Dew Point -7 F (-22 C)
#   Relative Humidity 70%
#   Pressure (altimeter) 30.41 in. Hg (1029 hPa)
#   ob KPTD 192355Z AUTO 20006KT 10SM FEW028 SCT034 BKN040 M18/M22 A3041
#   RMK AO2
#   _______________________________________________________________________

#24 Hour Summary