#!/usr/bin/env bash
## Displays stats for the files different between the current branch and REVIEW_BRANCH, which if unset defaults to the repository's default branch.
## Source: git-extra-commands

#
# git stats
#
# Based on https://blog.jez.io/cli-code-review/


set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

function debug() {
  if [[ -n "$DEBUG" ]]; then
    echo "$@"
  fi
}

function fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

function has() {
  # Check if a command is in $PATH
  which "$@" > /dev/null 2>&1
}

if [[ -z "$REVIEW_BASE" ]]; then
  REVIEW_BASE="$(git remote show origin | grep 'HEAD branch' | cut -d ' ' -f5)"
fi

exec git diff --stat "$(git merge-base HEAD "$REVIEW_BASE")"