#!/usr/bin/env bash

set -e

# Default values of arguments
# https://stackoverflow.com/a/44750379/558561 -- get the default git branch name
DEFAULT_BRANCH=$(git remote show $(git remote) | sed -n '/HEAD branch/s/.*: //p')
TEST_VERSION="7.4"
OTHER_ARGUMENTS=()

# Loop through arguments and process them
# @ref https://pretzelhands.com/posts/command-line-flags/
for arg in "$@"; do
  case $arg in
  --default-branch=*)
    DEFAULT_BRANCH="${arg#*=}"
    shift # Remove --default-branch= from processing
    ;;
  --test-version=*)
    TEST_VERSION="${arg#*=}"
    shift # Remove --test-version= from processing
    ;;
  *)
    OTHER_ARGUMENTS+=("$1")
    shift # Remove generic argument from processing
    ;;
  esac
done

# Based off: https://gist.github.com/Hounddog/3891872
if [[ $(git rev-parse --verify HEAD) ]]; then
  against='HEAD'
elif [[ $(git rev-parse --verify develop) ]]; then
  against='develop'
elif [[ $(git rev-parse --verify main) ]]; then
  against='main'
elif [[ $(git rev-parse --verify master) ]]; then
  against='master'
else
  echo "git can't verify HEAD, develop, master, or main."
  exit 1
fi

commitFiles=$(git diff --name-only "$(git merge-base ${DEFAULT_BRANCH:-develop} ${against})")