pick-installer

#!/usr/bin/env bash

shopt -s extglob
set -o errtrace
set -o errexit

log() {
  if [[ -t 1 ]]; then
    echo -e "\x1b[1m\x1b[32m>>>\x1b[0m \x1b[1m$1\x1b[0m"
  else
    echo ">>> $1"
  fi
}

warn() {
  if [[ -t 1 ]]; then
    echo -e "\x1b[1m\x1b[33m***\x1b[0m \x1b[1m$1\x1b[0m" >&2
  else
    echo "*** $1" >&2
  fi
}

error() {
  if [[ -t 1 ]]; then
    echo -e "\x1b[1m\x1b[31m!!!\x1b[0m \x1b[1m$1\x1b[0m" >&2
  else
    echo "!!! $1" >&2
  fi
}

fail() {
  error "$*"
  exit -1
}

if ! command -v git >/dev/null; then
  fail "pick-installer: git not found"
fi

if [ -z "$install_dir" ]; then
  if (( $UID == 0 )); then
    install_dir="/opt/pick"
    profile="/etc/profile.d/pick.sh"
  else
    install_dir="$HOME/.pick"
    profile="$HOME/.profile"
  fi
fi

log "Installing pick to $install_dir ..."
git clone --recursive https://github.com/gevans/pick $install_dir

log "Adding pick to \`\$PATH\` in $profile ..."
tee $profile >>/dev/null <<'EOF'
# Added by `pick` (https://github.com/gevans/pick#readme):
[ -d "/opt/pick/bin" ]   && PATH="/opt/pick/bin:$PATH"
[ -d "$HOME/.pick/bin" ] && PATH="$HOME/.pick/bin:$PATH"
EOF