#!/bin/sh
#
# Wrapper script for BitTorrent downloads
#

# Download directory
DLDIR=~/share/bittorrent/download

# Default mode
MODE=s

IP=217.215.6.225
BTHEXE=btdownloadheadless.py
BTCEXE=btdownloadcurses.py
EXTRA_BTOPTS="--max_upload_rate 20"

SCREEN=screen
EXTRA_SCOPTS=

XTERM=rxvt
EXTRA_XTOPTS="-name network"


[ $# -eq 0 ] && { echo "usage: btdl file|url [h|s|x]" >&2; exit 1; }

if [ $# -gt 1 ]; then
    case "$2" in
    h) MODE=h;;
    s) MODE=s;;
    x) MODE=x;;
    *) echo "btdl: Invalid mode \`$2'" >&2; exit 1;;
    esac
fi

case "$1" in
http://*)
    topt="--url \"$1\""
    ;;
*)
    [ -e "$1" ] || { echo "btdl: File \`$1' doesn't exist" >&2; exit 1; }
    dir=$(dirname "$1"); [ "$dir" = "." ] && dir=$(pwd)
    tail=$(basename "$1")
    if [ "$dir" != "$DLDIR" ]; then
	info=$(btshowmetainfo.py "$1") || exit 1
	file=$(echo "$info" | awk '
/^directory name\.*:/ { sub(/^directory name\.*: /, ""); print; exit }
/^file name\.*:/ { sub(/^file name\.*: /, ""); print; exit }') || exit 1
	[ -f "$dir/$file" -o -d "$dir/$file" ] && ln -s "$dir/$file" $DLDIR
	ln -s "$dir/$tail" $DLDIR
    fi
    topt="--responsefile \"$tail\""
    ;;
esac

case $MODE in
h)
    cmd="$BTHEXE $topt --ip $IP $EXTRA_BTOPTS >/dev/null 2>&1 &"
    ;;
s)
    cmd="$SCREEN -t \"BitTorrent [$1]\" $EXTRA_SCOPTS \
	    $BTCEXE $topt --ip $IP $EXTRA_BTOPTS"
    ;;
x)
    cmd="$XTERM -T \"BitTorrent [$1]\" $EXTRA_XTOPTS \
	    -e $BTCEXE $topt --ip $IP $EXTRA_BTOPTS &"
    ;;
esac

cd $DLDIR
eval $cmd
.