#!/bin/bash -ex
#
# script/brew_tap_update
# mas
#
# Updates mas custom tap formula:
# https://github.com/mas-cli/homebrew-tap/blob/main/Formula/mas.rb
#

MAS_TAP_PATH="$(brew --repository mas-cli/tap)"
MAS_TAP_FORMULA_FILE="${MAS_TAP_PATH}/Formula/mas.rb"

PROJECT_PATH="$(git rev-parse --show-toplevel)"
LOCAL_TAP_FORMULA_PATH="${PROJECT_PATH}/Homebrew/mas-tap.rb"

function usage {
  echo "Usage: brew_tap_update [-d] v0.0 [sha1_hash]"
  echo "  -d option enables dry run mode"
  echo "  version will be inferred using version script if not provided"
  echo "  sha will be inferred from the current commit if not provided"
  exit 1
}

# Max 3 arguments
if [[ $# -gt 3 ]]; then
  usage 1>&2
fi

echo=''

# Detect presence of `-d` dry run option
while getopts "d" o; do
  case "${o}" in
    d)
      echo='echo (DRY-RUN):'
      ;;
    *)
      usage 1>&2
      ;;
  esac
done

# DRY_RUN environment variable
# shellcheck disable=SC2153
if [[ $DRY_RUN == 'true' ]]; then
  echo='echo (DRY-RUN):'
fi

# arg 1 - version tag
if [[ -n "${1}" ]]; then
  MAS_VERSION="${1}"
else
  MAS_VERSION="v$(script/version)"
fi

echo "MAS_VERSION: ${MAS_VERSION}"

# arg 2 - revision (commit hash)
if [[ -n "${2}" ]]; then
  REVISION="${2}"
else
  # Derive revision from version. Fails if MAS_VERSION is not a tag.
  REVISION=$(git rev-parse "${MAS_VERSION}")
fi

echo "REVISION: ${REVISION}"

# Build in mas project
script/bottle