bitwarden_install.sh

#!/usr/bin/env bash

set -e
set -u
set -o pipefail
set -C

DOWNLOAD_URL="https://bitwarden.com/download/?app=cli&platform=linux"
INSTALL_DIR="$HOME/.local/bin"
INSTALL_PATH="${INSTALL_DIR}/bw"

_execute() {

    if [ $# -ne 1 ]; then
        REDIRECT_URL=$(_redirect_url)
    fi
    TMP_ZIPNAME=$(_make_tmp_zipname $REDIRECT_URL)
    curl -sfL -o $TMP_ZIPNAME $REDIRECT_URL
    unzip -d $INSTALL_DIR $TMP_ZIPNAME
    rm -frv $(dirname $TMP_ZIPNAME)
}

_make_tmp_zipname() {

    URL=$1
    echo "$(mktemp -d)/$(basename $URL)"
}

_redirect_url() {
    curl -w "%{redirect_url}" -s -o /dev/null "$DOWNLOAD_URL"
}

_remote_version_from_redirect_url() {

    URL=$1
    echo $URL | perl -nlpe 's/^.*\/bw\-linux\-(.*)\.zip$/$1/'
}

_local_version() {

    $INSTALL_PATH --version
}

install() {

    if [[ -f $INSTALL_PATH ]]; then
        echo "$INSTALL_PATH is already exists."
        exit 1
    fi

    _execute
}

forceinstall() {

    uninstall
    echo "bw force install."
    echo ""
    install
}

update() {

    if [[ ! -f $INSTALL_PATH ]]; then
        echo "$INSTALL_PATH is not exists."
        exit 1
    fi
    LOCAL_VERSION=$(_local_version)
    REDIRECT_URL=$(_redirect_url)
    REMOTE_VERSION="$(_remote_version_from_redirect_url $REDIRECT_URL)"

    if [[ "$LOCAL_VERSION" = "$REMOTE_VERSION" ]]; then
        echo "$INSTALL_PATH version $REMOTE_VERSION is already installed."
        exit 1
    fi

    _execute $REDIRECT_URL
}

uninstall() {

    if [[ ! -f $INSTALL_PATH ]]; then
        echo "$INSTALL_PATH is not exists."
        return
    fi
    rm -fv $INSTALL_PATH
}

usage() {
    echo "Usage: $0 [install|forceinstall|update|uninstall]"
    exit 1
}

if [ $# -ne 1 ]; then
    usage
fi


COMMAND=$1
case "$COMMAND" in
  "install" ) install ;;
  "forceinstall" ) forceinstall ;;
  "update" ) update ;;
  "uninstall" ) uninstall ;;
  * )  usage;;
esac