#!/usr/bin/env bash
#
# mfadd
#
# Add a remote and fetch it. Optionally copy a branch.
#
# Example: mfadd myfork:patch-1 copy_of_patch-1
#

[[ $# > 0 && $# < 3 && $1 != "-h" && $1 != "--help" ]] || { echo "usage: `basename $0` (user | ref copyname)" 1>&2 ; exit 1; }

# If a colon is included, split the parts
if [[ $1 =~ ":" ]]; then
  IFS=':' read -a DATA <<< "$1"
  USER=${DATA[0]}
  BRANCH=${DATA[1]}
  NAME=$2
else
  USER=$1
fi

MFINFO=$(mfinfo) || exit 1
IFS=' ' read -a INFO <<< "$MFINFO"
REPO=${INFO[2]}

set -e

echo "Adding and fetching $USER..."
git remote add "$USER" "git@github.com:$USER/$REPO.git" >/dev/null 2>&1 || echo "Remote exists."
git fetch "$USER"

[[ ! -z "$BRANCH" && ! -z "$NAME" ]] && git checkout $USER/$BRANCH -b $NAME
