#!/bin/bash

# Set up this account on a machine: the tools, checkouts and nvim plugins that
# the config link.sh links expects. Run it by hand, after `./link.sh yes`, once
# per machine and again whenever the Brewfile changes; every step only adds
# what is missing. Unlike link.sh it is slow and may stop to ask for a password,
# so nothing runs it on a timer.
#
#   ~/src/soarez/dot/install.sh
#
# On a new Mac, also run ./macos-defaults.sh, once -- see its header. A private
# layer's bootstrap may call both for you.
#
# Runs under macOS's /bin/bash 3.2.

set -euo pipefail

dotfiles_dir="$(cd "$(dirname "$0")" && pwd)"

# 1. Homebrew packages, on macOS. Linux machines get their packages from
#    whatever provisions them, not from here.
if [[ "$(uname)" == "Darwin" ]]; then
  if ! command -v brew >/dev/null 2>&1; then
    for b in /opt/homebrew/bin/brew /usr/local/bin/brew; do
      if [[ -x "${b}" ]]; then
        eval "$("${b}" shellenv)"
        break
      fi
    done
  fi
  if ! command -v brew >/dev/null 2>&1; then
    >&2 echo "ERROR: Homebrew is not installed. Install it first, then re-run this:"
    >&2 echo '  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"'
    exit 1
  fi
  # --no-upgrade: install what is missing and leave what is there alone. Plain
  # `brew bundle` also upgrades every listed package that is out of date.
  brew bundle --no-upgrade --file="${dotfiles_dir}/Brewfile"
fi

# 2. Checkouts the config reads: the pure prompt (config/zshrc falls back to a
#    plain one without it) and the extra colour schemes bin/theme lists. Over
#    https: both are public, so a fresh machine needs no ssh key for them.
#    Existing checkouts are left alone.
clone() {
  local url="$1" dest="$2"
  if [[ -d "${dest}/.git" ]]; then
    return
  fi
  mkdir -p "$(dirname "${dest}")"
  git clone --quiet "${url}" "${dest}"
  echo "cloned ${dest}"
}
clone https://github.com/sindresorhus/pure.git         "${HOME}/src/sindresorhus/pure"
clone https://github.com/alacritty/alacritty-theme.git "${HOME}/src/alacritty/alacritty-theme"

# 3. nvim's plugins, so the first real launch does not stop to install them.
#    `install`, not `sync`: install only fetches plugins that are missing, and
#    leaves installed ones where this host's lock file (~/.config/nvim/
#    lazy-lock.json, not in the repo) has them. sync would also update every
#    plugin to its latest version and rewrite that lock file.
if command -v nvim >/dev/null 2>&1; then
  nvim --headless "+Lazy! install" +qa || true
fi

if [[ "$(uname)" == "Darwin" ]]; then
  echo
  echo "Setting up a new Mac? Also run this, once:"
  echo "  ${dotfiles_dir}/macos-defaults.sh"
  echo "It applies the baseline Finder, Dock and keyboard settings, and resets the Dock."
fi