pd-scripts: download pd-scripts

pd-scripts-clone.sh

#!/usr/bin/env bash
# alias: `n/a`
# desc: download pd-scripts to ~/pd-scripts and install its commands. Sets up
#       the Mac tools first (developer tools, gh, GitHub login) if they're missing.
# usage: /bin/bash -c "$(curl -fsSL https://gist.githubusercontent.com/friz-xc/b74fb37152b3348bda3add9426289529/raw/pd-scripts-clone.sh)"
#   Standalone on purpose: it's published as a public gist and runs before
#   pd-scripts exists, so it can't source git-utils.sh.

set -euo pipefail

declare -r PD_SCRIPTS_URL="https://github.com/friz-xc/pd-scripts.git"
declare -r PD_SCRIPTS_DIR="$HOME/pd-scripts"
declare -r PREREQUISITES_URL="https://gist.githubusercontent.com/friz-xc/49f6d0dcfa22173ec33d02e172b7df37/raw/prerequisites-setup.sh"

green()  { echo -e "\033[32m$*\033[0m"; }
red()    { echo -e "\033[31m$*\033[0m"; }
dim()    { echo -e "\033[2m$*\033[0m"; }
bold()   { echo -e "\033[1m$*\033[0m"; }

fn_fail() {
  red "✖ $1" >&2
  [[ -n "${2:-}" ]] && dim "$2" >&2
  dim "Nothing is broken. Fix the above and run the same command again." >&2
  exit 1
}

# git comes with the developer tools, and gh must be logged in so git never
# asks for a password; run the prerequisites setup if either is missing.
fn_ensure_prerequisites() {
  export PATH="$HOME/.local/bin:$PATH"
  if xcode-select -p >/dev/null 2>&1 &&
    command -v gh >/dev/null 2>&1 &&
    gh auth status --hostname github.com >/dev/null 2>&1; then
    return
  fi
  bold "Your Mac needs a few tools first."
  local script
  script=$(curl -fsSL "$PREREQUISITES_URL") ||
    fn_fail "Couldn't download the Mac setup." "Check your internet connection."
  /bin/bash -c "$script"
  echo
}

fn_pd_scripts_clone() {
  [[ "$(uname)" == "Darwin" ]] || fn_fail "This setup is for Macs only."
  fn_ensure_prerequisites
  gh auth setup-git --hostname github.com >/dev/null 2>&1 || true

  bold "Downloading pd-scripts"
  export GIT_TERMINAL_PROMPT=0
  if [[ -d "$PD_SCRIPTS_DIR/.git" ]]; then
    green "✔ Already downloaded: ${PD_SCRIPTS_DIR}"
  elif [[ -e "$PD_SCRIPTS_DIR" ]]; then
    fn_fail "\`${PD_SCRIPTS_DIR}\` already exists and isn't pd-scripts." "Ask an engineer for help."
  else
    local out
    out=$(git clone --quiet "$PD_SCRIPTS_URL" "$PD_SCRIPTS_DIR" 2>&1) ||
      fn_fail "Couldn't download pd-scripts." \
        "If it says \"Repository not found\", ask an engineer to give your GitHub
account access to pd-scripts (friz-xc/pd-scripts).
${out}"
    green "✔ Downloaded to ${PD_SCRIPTS_DIR}"
  fi

  "$PD_SCRIPTS_DIR/install.sh" >/dev/null ||
    fn_fail "Downloaded, but couldn't install the commands." "Ask an engineer for help."
  echo
  green "✔ All done. pd-scripts is ready."
  dim "   Open a new Terminal window to use its commands, e.g. \`second-brain-clone\`."
}

# runs from `bash -c "$(curl …)"`, where there's no BASH_SOURCE to guard on
fn_pd_scripts_clone "$@"