mackup_sync

#!/usr/bin/env bash
# Runs Mackup in link mode where macOS allows it, and copy mode elsewhere.
# Link-mode apps are configured in ~/.mackup.cfg; copy-mode apps in
# ~/.mackup-copy.cfg. Commands other than `backup` run mackup_audit first.
#
# Usage:
#   mackup_sync [options] <command>
#
# Commands:
#   install   Move local link-mode files into the Mackup folder and link them,
#             then back up copy-mode files. Run on the first machine, or after
#             adding an app.
#   restore   Restore copy-mode files, then link link-mode files from the
#             Mackup folder. Run on a new machine after setup and once the
#             Mackup folder has synced.
#   backup    Back up copy-mode files. Link-mode files never need backing up.
#             Only checks that the Mackup folder exists, so a new app needing
#             config changes doesn't block scheduled backups.
#   check     Run mackup_audit, including files that should be linked but aren't.
#
# Options:
#   -n, --dry-run   Show what mackup would do without making changes
#   -f, --force     Answer yes to every mackup prompt
#   -h, --help      Show this help message
set -euo pipefail
cd "$(dirname "$0")"
source "${PWD}/helpers/trap_and_trace.sh"
PATH="${PWD}:${PATH}"

usage() {
  # Print the header comment block, stopping at the first non-comment line
  awk 'NR == 1 && /^#!/ { next } !/^#/ { exit } { sub(/^# ?/, ""); print }' "${PWD}/$(basename "$0")"
}

command=""
mackup_opts=()
while [[ $# -gt 0 ]]; do
  case "$1" in
    -n | --dry-run) mackup_opts+=(--dry-run) ;;
    -f | --force) mackup_opts+=(--force) ;;
    -h | --help) usage; exit 0 ;;
    install | restore | backup | check)
      if [[ -n "${command}" ]]; then
        log_error "Only one command may be given"; usage >&2; exit 1
      fi
      command="$1" ;;
    *) log_error "Unknown argument: $1"; usage >&2; exit 1 ;;
  esac
  shift
done

if [[ -z "${command}" ]]; then
  log_error "A command is required"
  usage >&2
  exit 1
fi

export MACKUP_LINK_CFG="${MACKUP_LINK_CFG:-${HOME}/.mackup.cfg}"
export MACKUP_COPY_CFG="${MACKUP_COPY_CFG:-${HOME}/.mackup-copy.cfg}"

link_mode() { mackup --config-file="${MACKUP_LINK_CFG}" "${mackup_opts[@]}" "$@"; }
copy_mode() { mackup --config-file="${MACKUP_COPY_CFG}" "${mackup_opts[@]}" "$@"; }

case "${command}" in
  check)
    mackup_audit --links
    ;;
  install)
    mackup_audit
    log_info "Linking link-mode apps"
    link_mode link install
    log_info "Backing up copy-mode apps"
    copy_mode backup
    ;;
  restore)
    mackup_audit
    log_info "Restoring copy-mode apps"
    copy_mode restore
    log_info "Linking link-mode apps"
    link_mode link
    ;;
  backup)
    mackup_audit --storage-only
    log_info "Backing up copy-mode apps"
    copy_mode backup
    ;;
esac

log_success "mackup_sync ${command} done"