#!/bin/bash
source /opt/aninix/Uniglot/Bash/header
export downloadtorrent="sudo -u deluge deluge-console 2>/dev/null add"

export IFS="
"
export servicename='wolfpack'

function helptext {
    echo '
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /\____              xxxxxxxxxxxxx     AniNIX::WolfPack 
  // ~ / _\_____                 Let loose the wolves to hunt, run, 
 /     \   .. \/                 and be free. They shall repay you 
//     /~_____/                  with their prey.
/// \\/  /                              ~dev@aninix.net
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wolfpack --alpha [enginefile]         ~~ Tell the alpha to send the 
                                         pack members hunting.
wolfpack --member <pup> [enginefile]  ~~ Send a member to train a 
                                         pup and bring back results.
                                         Optionally provide a 
                                         torrent engine file.
wolfpack --torrent-monitor            ~~ Pull up the Deluge console
                                         for torrents.
wolfpack --torrent-lookup             ~~ Look up and add a torrent 
                                         if user confirms.
wolfpack --help                       ~~ Show this helptext

Available pup types (all pups are line-delimited with the type and
result location as the first two lines):
torrent                               ~~ Torrent the result of the
                                         search term. Will remove search line on 
                                         success.
shows                                 ~~ Download the episode in a 
                                         show and increment. Shows
                                         are listed in format
                                         S01E01#Show terms#modifier
download                              ~~ Takes a list of commands to
                                         run to arrive at a URL to
                                         grab and downloads the last
                                         URL.
search                                ~~ Uses the Google search
                                         engine to return the top
                                         five results for the search
                                         terms on each line.
'   
}

function privacycheck {
    ip="$(/usr/local/bin/whatismyip)"
    if [ -z "$ip" ] || [ "$ip" == "$(nslookup aninix.net | grep Address | cut -f 2 -d ' ' | tail -n 1)" ]; then
        echo "ERROR: Should not torrent directly from the AniNIX main IP for privacy reasons" 2>&1 | systemd-cat -t "$servicename"
        exit 1
    fi
}

function nextairdate {
    if [ -z "$1" ]; then 
        echo "Need a show to search for"
        exit 1;
    fi
    timeout 5 elinks --dump "https://www.episodate.com/tv-show/$(echo $1 | tr '[:upper:]' '[:lower:]' | tr ' ' '-')?season=99" 2>&1 | grep 'and airs on' | sed 's#   Season [0-9]\+ / Episode [0-9]\+ and airs on ##'
    return
}

function torrentConfigure {
    if [ -z "$3" ]; then 
        configuretorrent /usr/local/etc/WolfPack/torrentengine
    else 
        configuretorrent "$3"
    fi
}


function torrent {
    if [ "$1" == "" ] || [ $(wc -l "$1" | cut -f 1 -d ' ') -lt 3 ]; then
        echo "Need a valid argument."
        return;
    fi
    torrentConfigure
    privacycheck;
    export downloaddir=$(head -n 2 "$1" | tail -n 1)
    sudo -u deluge deluge-console config -s autoadd_location "$downloaddir" 2>/dev/null
    sudo -u deluge deluge-console config -s download_location "$downloaddir" 2>/dev/null
    for i in $(tail -n +3 "$1"); do
        getmagnetlink "$i"
        if [ "$magnetlink" != "" ]; then
            /bin/bash -c "$downloadtorrent $magnetlink"
            sed -i "/$i/d" "$1"
            echo $magnetlink | systemd-cat -t "$servicename"
            echo Added magnet to deluged and removed $i | systemd-cat -t "$servicename"
        fi
    done
    if [ -x `which clamscan` ]; then clamscan -r -i "$downloaddir" | systemd-cat -t "$servicename"; fi
}

function shows {
    if [ "$1" == "" ] || [ $(wc -l "$1" | cut -f 1 -d ' ') -lt 3 ]; then
        echo "Need a valid argument."
        return;
    fi
    torrentConfigure
    privacycheck;
    export downloaddir=$(head -n 2 "$1" | tail -n 1)
    sudo -u deluge deluge-console config -s autoadd_location "$downloaddir" 2>/dev/null
    sudo -u deluge deluge-console config -s download_location "$downloaddir" 2>/dev/null
    for i in $(tail -n +3 "$1"); do
        sepisode=$(echo $i | cut -f 1 -d '#' | xargs)
        showName="$(echo $i | cut -f 2 -d '#' | xargs)"
        modifier="$(echo $i | cut -f 3 -d '#' | xargs)"
        season=$(echo $sepisode | cut -f 1 -d 'E' | cut -f 2 -d 'S')
        episode=$(echo $sepisode | cut -f 2 -d 'E')
        newep=$(printf "%02d\n" $((${episode#0} + 1)))
        newseason="$(printf "%02d\n" $((${season#0} + 1)))"
        if [ -z "$modifier" ]; then
            getmagnetlink "$showName $sepisode"
        else
            getmagnetlink "$showName $sepisode $modifier"
        fi
        if [ "$magnetlink" != "" ]; then
            # We found an episode.
            echo $i | systemd-cat -t "$servicename"
            echo $magnetlink | systemd-cat -t "$servicename"
            /bin/bash -c "$downloadtorrent $magnetlink"
            sed -i "s/$i/S${season}E${newep}#${showName}#${modifier}/" "$1"
            echo Downloaded and pup updated. | systemd-cat -t "$servicename"
            echo | systemd-cat -t "$servicename"
        else
            # We didn't -- is there a new season?
            if [ -z "$modifier" ]; then
                getmagnetlink "$showName S${newseason}E01"
            else
                getmagnetlink "$showName S${newseason}E01 $modifier"
            fi 
            if [ "$magnetlink" != "" ]; then
                echo "S${newseason}E01" $showName | systemd-cat -t "$servicename"
                echo "$magnetlink" | systemd-cat -t "$servicename"
                /bin/bash -c "$downloadtorrent $magnetlink"
                sed -i "s/$i/S${newseason}E02#$showName#$modifier/" "$1"
            else
                nextAirDate="$(nextairdate "$showName")"
                if [ ! -z "$nextAirDate" ]; then 
                    echo "No new season found for $showName -- next airs $(nextairdate "$showName")" | systemd-cat -t "$servicename"
                    if [ "$(date -d "$nextAirDate" -u +%s)" -lt "$(date -u +%s)" ]; then
                        echo ERROR: Should have found a new episode for $searchterms and did not -- check your provider\! | systemd-cat -t "$servicename"
                    fi
                else 
                    echo "No new season found for $showName" | systemd-cat -t "$servicename"
                fi
            fi
        fi
    done
    if [ -x `which clamscan` ]; then clamscan -r -i "$downloaddir" | systemd-cat -t "$servicename"; fi
}

function download { 
    if [ "$1" == "" ] || [ $(wc -l "$1" | cut -f 1 -d ' ') -lt 3 ]; then
        echo "Need a valid argument."
        return;
    fi
    export dedupterm="$(echo $1 | rev | cut -f 1 -d '/' | rev | cut -f 1 -d '.')"
    # Second line in the file is the directory to download to.
    export downloaddir=$(head -n 2 "$1" | tail -n 1 | sed 's#/$##')
    # The third line and any following lines should be 
    for i in $(tail -n +3 "$1"); do
        if [ -z "$i" ]; then continue; fi
        export comm=$(echo $i | sed "s#PREVRESULT#$nexturl#g" -)
        export nexturl=$(bash -c "$comm")
    done
    if [ -z "$nexturl" ]; then
        echo ERR: $dedupterm wolf pup is not finding its target.
    fi
    export filename="$downloaddir"/"$(echo "$nexturl" | rev | cut -f 1 -d \/ | rev)"
    #if file doesn't already exist....
    if [ ! -f "$filename" ]; then
        echo Downloading $nexturl to $filename ... | systemd-cat -t "$servicename"
        for i in $(find "$downloaddir" -type f | grep -i "$dedupterm"); do
            echo Deduped\! Removed $i from $downloaddir | systemd-cat -t "$servicename"
            rm -f "$i" 2>&1 | systemd-cat -t "$servicename"
        done
        wget --timeout=5 -q -O "$filename" "$nexturl"
        echo Downloaded | systemd-cat -t "$servicename"
    fi
    if [ -x `which clamscan` ]; then clamscan -r -i "$downloaddir" | systemd-cat -t "$servicename"; fi
}

function search {
    if [ "$1" == "" ] || [ $(wc -l "$1" | cut -f 1 -d ' ') -lt 3 ]; then
        echo "Need a valid argument."
        return;
    fi
    export downloaddir=$(head -n 2 "$1" | tail -n 1 | sed 's#/$##')
    for i in $(tail -n +3 "$1"); do
        export searchstring=$(echo $i | sed 's/ /+/g')
        export file="$downloaddir"/$searchstring'.txt'
        echo | googler --count=5 -C -x "$searchstring" | grep -v 'Enter n, p, result' > "$file"
        echo "Ran search for $searchstring to $file" | systemd-cat -t "$servicename"
    done
}

if [ "$1" == "" ]; then
    helptext;
    exit 1; 
fi

echo '---' $(date) '---' | systemd-cat -t "$servicename"

case "$1" in 
    "--alpha")
        echo Started alpha on `uname -n` | systemd-cat -t "$servicename"
        if [ "$2" == "" ]; then
            export basedir="/usr/local/etc/WolfPack"
        else
            export basedir="$2";
        fi
        echo "Starting members from pup in "$basedir | systemd-cat -t "$servicename"
        for i in $(find "$basedir" -type f | grep '.pup'); do
            /usr/local/bin/wolfpack --member "$i" "$3";
        done
        ;;

    "--member")
        echo "Spawning a $(head -n 1 "$2") member for $2 on `uname -n`" | systemd-cat -t "$servicename"
        (printf "IP: "; /usr/local/bin/whatismyip) | systemd-cat -t "$servicename"
        case "$(head -n 1 "$2")" in 
            "shows") 
                shows "$2"
                ;;
            "torrent")
                torrent "$2"
                ;;
            "search")
                search "$2"
                ;;
            "download")
                download "$2"
                ;;
            *)
                echo "Bad pup type."
                ;;
        esac 
        ;;
    "--torrent-monitor")
        exec sudo -u deluge deluge-console 2>/dev/null; 
        exit 0;
        ;;
    "--torrent-lookup")
        torrentConfigure
        getmagnetlink "$(echo $2 | tr '#' "$searchunifier")"
        if [ -z "$magnetlink" ]; then
            echo Nothing found;
            exit 0;
        fi
        echo
        echo Found: $magnetlink
        echo 
        
        echo 'Acceptable? [y/n]'
        read answer
        if [ "$answer" == "y" ]; then
            /bin/bash -c "$downloadtorrent $magnetlink"
        fi;
        exit 0;
        ;;

    *)
        helptext
        ;;
esac

echo "Exited "$1 | systemd-cat -t "$servicename"
echo '---' "$(date)" '---' | systemd-cat -t "$servicename"
echo | systemd-cat -t "$servicename"