#!/bin/bash
#
# Download the Tor Browser Bundle.
#

# Parameters
BASENAME="`basename $0`"
APPS="$HOME/apps"
#APP_BASE="$APPS/tor-browser"
APP_BASE="$HOME/.local/share/tor-browser"
TEMP="$TMP/tor-browser"
DL="$HOME/data/distros/tor/"
VERSION="$1"
ARCH="$2"
#LANG="$3"
#LANG="ALL"
#BASE_URL="https://dist.torproject.org/torbrowser/$VERSION"
BASE_URL="https://archive.torproject.org/tor-package-archive/torbrowser/"

# Syntax check
if [ -z "$VERSION" ]; then
  #echo "usage: $BASENAME <version> [arch] [lang]"
  #echo "example: $BASENAME 12.5.2 linux64 en-US"
  echo "usage: $BASENAME <version> [arch]"
  echo "example: $BASENAME 12.5.2 linux64"
  exit 1
fi

# Determine architecture and file suffix
if echo $VERSION | grep -q 'a'; then
  APP="tor-browser-alpha"
else
  APP="tor-browser"
  FILE_SUFFIX="_ALL"
fi

# Determine architecture
if [ "$ARCH" = "i386" ]; then
  ARCH="linux32"
elif [ "$ARCH" = "i686" ]; then
  ARCH="linux32"
elif [ "$ARCH" = "x86_64" ]; then
  if [ "$APP" = "tor-browser" ]; then
    ARCH="linux64"
  else
    ARCH="linux-x86_64"
  fi
elif [ -z "$ARCH" ]; then
  ARCH="linux64"
fi

# Set lang
#if [ -z "$LANG" ]; then
#  LANG="en-US"
#fi

# Set file names
#FILE="tor-browser-$ARCH-$VERSION"_"$LANG.tar.xz"
FILE="tor-browser-${ARCH}-${VERSION}${FILE_SUFFIX}.tar.xz"
SIGN="$FILE.asc"

# Check existing installation
if [ -d "$APP_BASE/$ARCH-$VERSION" ]; then
  echo "TBB version $VERSION for $ARCH already installed"
  exit 1
fi

# Create folders
mkdir -p "$TEMP"
mkdir -p "$APP_BASE"
mkdir -p "$DL"

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

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

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

# Unpack
( cd "$TEMP" && tar xf "$DL/$FILE" ) || exit 1

# Move and symlink
mv "$TEMP/tor-browser_$LANG" "$APP_BASE/$ARCH-$VERSION"
rm -rf $APP_BASE/$ARCH && \
( cd "$APP_BASE" && ln -sf "$ARCH-$VERSION" "$ARCH" )

# Set pentadactyl if available
#if [ -e "$HOME/.pentadactyl" ]; then
#  (
#    cd "$APP_BASE/$ARCH-$VERSION/Browser"
#    ln -s "$HOME/.pentadactyl"
#    ln -s "$HOME/.pentadactylrc"
#  )
#fi

# Set vimperator if available
#if [ -e "$HOME/.vimperator" ]; then
#  (
#    cd "$APP_BASE/$ARCH-$VERSION/Browser"
#    ln -s "$HOME/.vimperator"
#    ln -s "$HOME/.vimperatorrc"
#  )
#fi

# Cleanup
rm -rf "$TEMP"
echo "Please check and cleanup old versions at $APP_BASE"