#!/bin/bash
#
# Download Tails images
#

# Parameters
BASENAME="`basename $0`"
DL="$HOME/data/distros/tails/"
VERSION="$1"
BASE_URL="http://dl.amnesia.boum.org/tails/stable/tails-amd64-$VERSION"
CWD="`pwd`"

# Syntax check
if [ -z "$VERSION" ]; then
  echo "usage: $BASENAME <version>"
  echo "example: $BASENAME 0.22"
  exit 1
fi

# Set file names
FILE="tails-amd64-$VERSION.iso"
#HYBRID="tails-amd64-$VERSION.hybrid.iso"
SIGN="$FILE.sig"

# Download package
if [ ! -e "$DL/$FILE" ]; then
  wget -c $BASE_URL/$FILE -O $DL/$FILE || exit 1
fi

# Download signature
if [ ! -e "$DL/$SIGN" ]; then
  wget -c $BASE_URL/$SIGN -O $DL/$SIGN || exit 1
fi

# Check signature
gpg --verify $DL/$SIGN $DL/$FILE || exit 1

# Symlink and hybrid version
cd $DL
ln -sf $FILE tails-amd64-latest.iso
ln -sf $SIGN tails-amd64-latest.iso.sig
#cp $FILE $HYBRID
#ln -sf $HYBRID tails-amd64-latest.hybrid.iso
#isohybrid $HYBRID
cd $CWD