#!/bin/sh
#
# Revision notes: This is version 4.2-061607 (June 16, 2007)
# Comments were cleaned up. The file conditions.txt is used for screen 
# output in both applications (spelled correctly), with a specially 
# modified text "festread.txt" intended for Festival to use. It has 
# purposely misspelled words so that Festival will pronounce them 
# a certain way.
#
# This is still beta grade, provisions for data "not available" and 
# "variable" in the winds description should be worked in.
#
# Credits: Started by kb9mwr, minor tweaks by kb9aln
# 
# Description: 
# A script that grabs that current decoded (METAR style) local weather 
# observations.  We do some magic to make it text to speech readable.
# I'm using Cepstral to convert the text to speech, optionally you can use 
# festival.
#
#[custom-wxcond]
#exten => s,1,Answer
#exten => s,2,System(/usr/local/bin/get-conditions)
#exten => s,3,Wait(2)
#exten => s,4,MP3Play(/tmp/conditions.mp3)
#exten => s,5,hangup
#
##########
# Clean-up 
##########
/bin/rm -f /tmp/metar.txt > /dev/null 2>&1
/bin/rm -f /tmp/forecast.txt > /dev/null 2>&1
/bin/rm -f /tmp/conditions.* > /dev/null 2>&1
/bin/rm -f /var/lib/asterisk/sounds/conditions.gsm > /dev/null 2>&1
#
###############
# Get the METAR
###############
#lynx -dump http://weather.noaa.gov/pub/data/observations/metar/decoded/KGRB.TXT > /tmp/metar.txt
wget http://weather.noaa.gov/pub/data/observations/metar/decoded/KGRB.TXT -O /tmp/metar.txt > /dev/null 2>&1
wget http://weather.noaa.gov/pub/data/forecasts/city/wi/green_bay.txt -O /tmp/forecast.txt > /dev/null 2>&1
#
###################
# Extract variables
###################
TEMP1=`grep "Temperature" /tmp/metar.txt`
TEMP=`echo $TEMP1 | cut -c13-15`
SKY1=`grep "Sky conditions" /tmp/metar.txt`
SKY=`echo $SKY1 | cut -c17-33`
#
# This determines if there is no wind at all ie. Calm. If it is, it sets a 
# flag. Cleaned up on 6/16/07
#
CALM1=`grep "Wind" /tmp/metar.txt`
CALM2=`echo $CALM1 | cut -d " " -f2`
#
    if [ $CALM2 = "Calm:0" ];
	then CALMFLAG=1;
	else CALMFLAG=0;
    fi    
#
#
    if [ $CALMFLAG = 0 ];
	then WIND1=`grep "Wind" /tmp/metar.txt`; WDIR1=`echo $WIND1 | cut -d " " -f4`;
    fi
#
#
# Had to set WDIR1 to something even if there is no wind, otherwise 
# bash complains that there is no unary operator.
#
    if [ $CALMFLAG = 1 ];
	then WDIR1="0"
    fi
#
# Replacement of directions with non-abbreviated words.
# This was updated 6/13/07 to include ENE, WNW, WSW and ESE.
#
    if [ $CALMFLAG = 1 ];
	then WDIR=" "
    fi    
#
# 
    if [ $WDIR1 = "SSE" ];
	then WDIR="South South-East"
    fi
#
# 
    if [ $WDIR1 = "ESE" ];
	then WDIR="East South-East"
    fi
#
# 
    if [ $WDIR1 = "SSW" ]; 
	then WDIR="South South-West"
    fi
#
#
    if [ $WDIR1 = "WSW" ];
	then WDIR="West South-West"
    fi
#
#
    if [ $WDIR1 = "NNE" ]; 
	then WDIR="North North-East"
    fi
#
#
    if [ $WDIR1 = "ENE" ];
	then WDIR="East-North-East"
    fi
#
#
    if [ $WDIR1 = "NNW" ]; 
	then WDIR="North North-West"
    fi
#
#
    if [ $WDIR1 = "WNW" ];
	then WDIR="West North-West"
    fi
#
#
    if [ $WDIR1 = "NE" ];
	then WDIR="North-East"
    fi
#
#
    if [ $WDIR1 = "NW" ]; 
	then WDIR="North-West"
    fi
#
#
    if [ $WDIR1 = "SE" ]; 
	then WDIR="South-East"
    fi
#
#
    if [ $WDIR1 = "SW" ]; 
	then WDIR="South-West"
    fi
#
#
    if [ $WDIR1 = "N" ];
	then WDIR="North"
    fi
#
#
    if [ $WDIR1 = "S" ];
	then WDIR="South"
    fi
#
#
    if [ $WDIR1 = "E" ]; 
	then WDIR="East"
    fi
#
#
    if [ $WDIR1 = "W" ]; 
	then WDIR="West"
    fi
#
# 
# Again we use the calm flag to test and make a decision. If the
# flag is 1, it sets a null speed value. This is just to keep the
# variable values filled with something in the script.
#
    if [ $CALMFLAG = 1 ];
	then WSPEED=" ";
	else WSPEED=`echo $WIND1 | cut -d " " -f8`;
    fi
##
#
#################
# Generate Output
#################
# This section processes the Screen output for the terminal.
# originally put it in for debugging..
#
echo "The Current temperature is $TEMP degrees." >> /tmp/conditions.txt
echo "Skies are $SKY." >> /tmp/conditions.txt
#
# Here is the conditional test and wind characteristics output to the 
# wxdisplay.txt file for the terminal output.
#
    if [ $CALMFLAG = 1 ];
	then echo "The Wind is Calm." >> /tmp/conditions.txt;
	else echo "The Wind is from the $WDIR at $WSPEED miles per hour." >> /tmp/conditions.txt;
    fi
echo "Forecast for Green Bay is as follows." >> /tmp/conditions.txt
tail -5 /tmp/forecast.txt | while read line; do
echo "$line." | cut -c2-80 >> /tmp/conditions.txt
done
# 
# Now for visual output. This just dumps the conditions.txt
# file to the console or a terminal window. This file is also read by
# Cepstra. Festival reads a different file.
#
cat /tmp/conditions.txt
#
# Here is the output that appears in the file that Festival reads:
#
echo "Here is your weather report, Sir." >> /tmp/festread.txt
echo "The Current temperature is $TEMP degrees." >> /tmp/festread.txt
echo "Skies are $SKY." >> /tmp/festread.txt
    if [ $CALMFLAG = 1 ];
	then echo "The Winde is Calm." >> /tmp/festread.txt;
	else echo "The Winde is from the $WDIR at $WSPEED miles per 'hour." >> /tmp/festread.txt;
    fi
#
#############################
# Convert to wav & misc stuff
#############################
/opt/swift/bin/swift -f /tmp/conditions.txt -o /tmp/conditions.wav
/usr/local/bin/lame --silent --scale 2.5 --abr 32 -m m -h /tmp/conditions.wav /tmp/conditions.mp3
#text2wave conditions.txt -o conditions.wav
#/usr/local/share/festival/bin/festival --tts /tmp/festread.txt 
#
#sox /tmp/conditions.wav -c1 -r8000 -w /var/lib/asterisk/sounds/conditions.gsm
#chown "asterisk":"asterisk" /var/lib/asterisk/sounds/conditions.gsm
#chmod 755 /var/lib/asterisk/sounds/conditions.gsm
#
#
#
exit 0
#
# Exit with no errors
#