#!/bin/sh

XMLF="KMSP.xml"
FNAME="KMSP.png"

# Create 166 x 90 darkgrey background image
convert -size 166x90 xc:grey $FNAME

# Parse the XML file and set up print strings
TX01="Minneapolis, MN 55401"
TX02=`grep '<weather>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`
TX04=`grep '<wind_string>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1 | cut -d' ' -f3- | sed -e 's/Northwest/NW/g' -e 's/Southwest/SW/g' -e 's/Northeast/NE/g' -e 's/Southeast/SE/g'`
TX05a=`grep '<relative_humidity>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`
TX05="${TX05a}% Humidity"
TX06a=`grep '<observation_time>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1 | cut -d' ' -f4-7 | sed -e 's/pm/PM/g' | sed -e 's/am/AM/g'`
TX06="Updated: ${TX06a}"

# Wind chill and heat factor are a mess.
TX03a=`grep '<temp_f>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`
TX03c=`grep '<windchill_f>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`
TX03h=`grep '<heat_index_f>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`

if [ $TX03a -ge 80 ]
then
  if [ "$TX03h" = "NA" ]
  then
    TX03="${TX03a}F (${TX03a} Heat Fact)"
  else
    TX03="${TX03a}F (${TX03h} Heat Fact)"
  fi
elif [ $TX03a -le 40 ]
then
  if [ "$TX03c" = "NA" ]
  then
    TX03="${TX03a}F (${TX03a} Windchill)"
  else
    TX03="${TX03a}F (${TX03c} Windchill)"
  fi
else
  TX03="${TX03a}F (${TX03a} Heat Fact)"
fi

# Write the text strings to the image
convert $FNAME -font ./TimesBold.ttf -pointsize 14 -draw "text 3,14 '$TX01'" $FNAME
convert $FNAME -font ./HelveticaNeue.ttf -pointsize 12 -draw "text 62,29 '$TX02'" $FNAME
convert $FNAME -font ./HelveticaNeue.ttf -pointsize 12 -draw "text 62,43 '$TX03'" $FNAME
convert $FNAME -font ./HelveticaNeue.ttf -pointsize 12 -draw "text 62,57 '$TX04'" $FNAME
convert $FNAME -font ./HelveticaNeue.ttf -pointsize 12 -draw "text 62,71 '$TX05'" $FNAME
convert $FNAME -font ./HelveticaNeue.ttf -pointsize 12 -draw "text 3,85 '$TX06'" $FNAME

# Put in the icon, substitute N/A if not found
ICN=`grep '<icon_url_name>' $XMLF | cut -d'>' -f2 | cut -d'<' -f1`

if [ ! -f icons/$ICN ]
then
  ICN="na.png"
fi

composite -geometry +4+16 icons/$ICN $FNAME $FNAME

exit