aws_install_ctrl.sh

#!/usr/bin/env bash

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

WORK_DIR=$HOME/.cache
DOWNLOAD_URL=https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip
ZIP_FILE=awscliv2.zip
INSTALL_DIR=/usr/local/aws-cli

_is_root() {
    if [[ $(id -u) -eq 0 ]]; then
        return 0
    else
        return 1
    fi
}

_execute() {
    local BASH=$(which bash)
    if ! _is_root; then
        BASH="sudo $BASH"
    fi
    $BASH -c "$@"
}

awscli_install() {

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

    curl -s $DOWNLOAD_URL -o $ZIP_FILE
    unzip -o $ZIP_FILE
    
    _execute "./aws/install"
}

awscli_forceinstall() {

    awscli_uninstall

    echo "re:install awscliv2"
    awscli_install
    echo ""
    echo "awscli force install."
}

awscli_uninstall() {

    if [[ ! -d $INSTALL_DIR ]]; then
        echo "$INSTALL_DIR is not exists."
        exit 1
    fi

    _execute "rm -frv $INSTALL_DIR /usr/local/bin/aws* ./aws"
    echo ""
    echo "awscli uninstall."
}

awscli_update() {

    if [[ ! -d $INSTALL_DIR ]]; then
        echo "$INSTALL_DIR is not exists."
        exit 1
    fi
    if [[ ! -d "./aws" ]]; then
        echo "aws extract directory is not exists."
        exit 1
    fi
    _execute "./aws/install --update"
}

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

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

COMMAND=$1
if [[ ! -d $WORK_DIR ]]; then
    mkdir $WORK_DIR
fi
cd $WORK_DIR


case "$COMMAND" in
  "install" ) awscli_install ;;
  "forceinstall" ) awscli_forceinstall ;;
  "uninstall" ) awscli_uninstall ;;
  "update" ) awscli_update ;;
  * )  usage;;
esac