#!/usr/bin/env bash

# Git automatic range diff

# Enforce being in a git repository
git rev-parse --is-inside-work-tree >/dev/null || exit $?

# We actually should check out the head branch via `git remote show ${REMOTE}`,
# but this requires active connection and active 2FA verification. Tedious to
# have multiple calls for this
if git rev-parse --verify main &>/dev/null; then
    MAIN_BRANCH=main
else
    MAIN_BRANCH=master
fi

CURRENT_BRANCH="$(git rev-parse --abbrev-ref HEAD)"
GIT_REMOTE=origin

# Show the next command
set -x

git range-diff "${GIT_REMOTE}/${MAIN_BRANCH}..${GIT_REMOTE}/${CURRENT_BRANCH}" "${MAIN_BRANCH}..${CURRENT_BRANCH}"