#!/usr/bin/bash
#####
#
# weather - Downloads weather maps
#
# Usage:  weather [ pause | resume ] [ show | unshow ] [ clean ]
#
# $RCSfile: weather,v $
# $Revision: 1.15 $
# $Date: 2006/03/20 15:01:54 $
#
#####

function get_it
{
    file=$1
    url=$2

    /usr/bin/wget -q --no-cache -T 15 -t 2 -O $file $url >>weather.log 2>&1
    if [[ ! -s $file ]]; then
        rm -f $file
        echo "Failure getting $file: $url" >>weather.log
        date >>weather.log
        exit 1
    fi
}


if [[ $LOGNAME == 'Jerry' ]]; then
    cd /y
else
    cd /x
fi
if [[ ! -d Weather ]]; then
    mkdir Weather
fi
cd Weather

# Pause in weather processing
if [[ -n $1 ]]; then
    if [[ $1 == 'pause' ]]; then
        touch PAUSE
        echo 'Weather paused'
        exit 0
    elif [[ $1 == 'resume' ]]; then
        rm -f PAUSE
        echo 'Weather resumed'
    elif [[ $1 == 'show' ]]; then
        weatherx
        exit 0
    elif [[ $1 == 'unshow' ]]; then
        kill `cat /var/run/weatherx.pid`
        rm -f /var/run/weatherx.pid
        exit 0
    elif [[ $1 == 'clean' ]]; then
        echo 'Cleaning...'
        today=`date +%m%d`
        for dir in map rsm rlg cur sat vis; do
            keep="$dir/$today"
            for x in $dir/????; do
                if [[ $x != $keep ]]; then
                    rm -fr $x
                fi
            done
        done
        echo 'Done'
        exit 0
    else
        echo "Unknown arg: $1"
        exit 1
    fi
fi
if [[ -f PAUSE ]]; then
    exit 0      # Paused
fi

# Current weather
get_it map.jpg http://image.weather.com/images/maps/current/curwx_720x486.jpg
get_it rsm.jpg http://image.weather.com/web/radar/us_phl_ultraradar_large_usen.jpg
get_it rlg.jpg http://image.weather.com/web/radar/us_har_closeradar_large_usen.jpg
get_it cur.jpg http://image.weather.com/images/maps/current/cur_ec_720x486.jpg
get_it sat.jpg http://image.weather.com/images/sat/regions/east_cen_sat_720x486.jpg
get_it vis.jpg http://image.weather.com/images/sat/regions/ec_vis_sat_720x486.jpg

today=`date +%m%d`
now=`date +%H%M`

for x in map rsm rlg cur sat vis; do
    if [[ ! -f $x.jpg ]]; then
        continue
    fi
    if [[ ! -s $x.jpg ]]; then
        rm -f $x.jpg
        continue
    fi

    if [[ ! -d $x/$today ]]; then
        mkdir -p $x/$today
    fi

    if [[ -f $x/.last ]]; then
        if [[ -f `cat $x/.last` ]]; then
            if diff -q `cat $x/.last` $x.jpg >/dev/null; then
                rm -f $x.jpg
            fi
        fi
    fi

    if [[ -f $x.jpg ]]; then
        echo $x/$today/$now.jpg >$x/.last
        mv $x.jpg $x/$today/$now.jpg
    fi
done

# Forecasts
if [[ -d fore ]]; then
    rm -f fore/*.jpg
else
    mkdir -p fore
fi

day=`date +%w`
if [[ $day -ne 0 ]]; then
    day=$(( 7 - $day ))
fi
get_it fore/${day}_sun.jpg http://image.weather.com/images/maps/forecast/trend7_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_mon.jpg http://image.weather.com/images/maps/forecast/fore1_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_tue.jpg http://image.weather.com/images/maps/forecast/fore2_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_wed.jpg http://image.weather.com/images/maps/forecast/fore3_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_thu.jpg http://image.weather.com/images/maps/forecast/fore4_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_fri.jpg http://image.weather.com/images/maps/forecast/fore5_720x486.jpg
day=$(( $day + 1 ))
if [[ $day -eq 7 ]]; then
    day=0
fi
get_it fore/${day}_sat.jpg http://image.weather.com/images/maps/forecast/trend6_720x486.jpg

get_it fore/_0_cur.jpg http://image.weather.com/images/maps/current/curwx_720x486.jpg
if [[ $now < '0400' || $now > '1900' ]]; then
    get_it fore/_1_am.jpg http://image.weather.com/images/maps/forecast/amfcst_720x486.jpg
    get_it fore/_2_mid.jpg http://image.weather.com/images/maps/forecast/midfcst_720x486.jpg
    get_it fore/_3_pm.jpg http://image.weather.com/images/maps/forecast/pmfcst_720x486.jpg
elif [[ $now < '1300' ]]; then
    get_it fore/_3_am.jpg http://image.weather.com/images/maps/forecast/amfcst_720x486.jpg
    get_it fore/_1_mid.jpg http://image.weather.com/images/maps/forecast/midfcst_720x486.jpg
    get_it fore/_2_pm.jpg http://image.weather.com/images/maps/forecast/pmfcst_720x486.jpg
else
    get_it fore/_2_am.jpg http://image.weather.com/images/maps/forecast/amfcst_720x486.jpg
    get_it fore/_3_mid.jpg http://image.weather.com/images/maps/forecast/midfcst_720x486.jpg
    get_it fore/_1_pm.jpg http://image.weather.com/images/maps/forecast/pmfcst_720x486.jpg
fi

if [[ -s weather.log ]]; then
    date >>weather.log
else
    rm weather.log
fi

# EOF