install

#!/usr/bin/env bash

set -euo pipefail

print_help() {
    echo "Installs latest version of deps.clj. Installation directory defaults to /usr/local/bin."
    echo -e
    echo "Usage:"
    echo "install --dir [<dir>] [--as-clj]"
    exit 1
}

default_install_dir="/usr/local/bin"
install_dir=$default_install_dir
download_dir=""
version=""
as_clj="false"

while [[ $# -gt 0 ]]
do
    key="$1"
    case "$key" in
        --dir)
            install_dir="$2"
            shift
            shift
            ;;
        --download-dir)
            download_dir="$2"
            shift
            shift
            ;;
        --version)
            version="$2"
            shift
            shift
            ;;
        --as-clj)
            as_clj="true"
            shift
            ;;
        *)  # unknown option
            print_help
            shift
            ;;
    esac
done

if [[ -z "$download_dir" ]]; then
    download_dir="$(mktemp -d)"
    trap 'rm -rf "$download_dir"' EXIT
fi

if [[ "$version" == "" ]]; then
    version="$(curl -sL https://raw.githubusercontent.com/borkdude/deps.clj/master/resources/DEPS_CLJ_RELEASED_VERSION)"
fi

case "$(uname -s)" in
    Linux*)     platform=linux;;
    Darwin*)    platform=macos;;
esac

download_url="https://github.com/borkdude/deps.clj/releases/download/v$version/deps.clj-$version-$platform-amd64.zip"

cd "$download_dir"
echo -e "Downloading $download_url."
curl -o "deps.clj-$version-$platform-amd64.zip" -sL "https://github.com/borkdude/deps.clj/releases/download/v$version/deps.clj-$version-$platform-amd64.zip"
unzip -qqo "deps.clj-$version-$platform-amd64.zip"
rm "deps.clj-$version-$platform-amd64.zip"



if [[ "$download_dir" != "$install_dir" ]]
then
    mkdir -p "$install_dir"
    cd "$install_dir"
    if [[ $as_clj == "true" ]]
    then
        if [ -f clj ]; then
            echo "Moving $install_dir/clj to $install_dir/clj.old"
            mv "$install_dir/clj" "$install_dir/clj.old"
        fi

        cp "$download_dir/deps" "$PWD/clj"

        if [ -f clojure ]; then
            echo "Moving $install_dir/clojure to $install_dir/clojure.old"
            mv "$install_dir/clojure" "$install_dir/clojure.old"
        fi

        cp "$download_dir/deps" "$PWD/clojure"

        rm "$download_dir/deps"
    else
        if [ -f deps ]; then
            echo "Moving $install_dir/deps to $install_dir/deps.old"
            mv "$install_dir/deps" "$install_dir/deps.old"
        fi

        mv -f "$download_dir/deps" "$PWD/deps"
    fi
else
    if [[ $as_clj == "true" ]]
    then
        if [ -f clj ]; then
            echo "Moving $install_dir/clj to $install_dir/clj.old"
            mv "$install_dir/clj" "$install_dir/clj.old"
        fi

        cp "$download_dir/deps" "$PWD/clj"

        if [ -f clojure ]; then
            echo "Moving $install_dir/clojure to $install_dir/clojure.old"
            mv "$install_dir/clojure" "$install_dir/clojure.old"
        fi

        cp "$download_dir/deps" "$PWD/clojure"

        rm "$download_dir/deps"
    fi
fi

if [[ $as_clj == "true" ]]
then
    echo "Successfully installed clojure in $install_dir."
else
    echo "Successfully installed deps in $install_dir."
fi