start_pr

#!/usr/bin/env bash

## This script assumes that you have an upstream and origin branch set up.

# Establish variables
branch="$1"
up_branch="$2"
FATAL="\033[31m"
INFO="\033[34m"
WARNING="\033[33m"
RESET="\033[0m"


# Perform rebase against upstream
rebase_repo ()
{
  echo -e "$INFO Checking out $up_branch... $RESET"
  echo -e "$INFO ---------------------- $RESET"
  git checkout $up_branch
  printf "\n"
  echo -e "$INFO Performing rebase on upstream and $up_branch"
  echo -e "$INFO ---------------------------------------- $RESET"
  git pull --rebase upstream $up_branch
  printf "\n"
  echo -e "$INFO Fetching... $RESET"
  echo -e "$INFO ----------- $RESET"
  git fetch --all
  printf "\n"
  git status
  printf "\n"
  git push
  printf "\n"
  echo -e "$INFO Pushing to origin $up_branch $RESET"
  echo -e "$INFO ------------------------ $RESET"
  git status
}

# Checks out a branch
start_pr ()
{
  git checkout -b ${branch}
}

# Prompt the user for a branch to create a branch if no command line argument given
# if [[ $# -eq 0 ]]; then
if [[ -z $branch || -z $up_branch ]]; then
    read -p "What is your branch number? " branch
    read -p "What is your upstream branch? " up_branch
    rebase_repo
fi

# Test against if the branch exists
if grep ${branch} <(git branch | xargs) >/dev/null; then
  echo -e "$FATAL fatal: A branch named '${branch}' already exists, you must checkout a new branch $RESET"
  exit 1
else
  rebase_repo
fi
printf "\n"

# Asks if the user would like to start the PR
read -p "Would you like to start a PR? y/n " answer
if [[ "${answer}" = "yes" || "${answer}" = "y" ]]; then
  start_pr
else
  echo -e "$INFO PR has not been created. Rerun the script if you change your mind. $RESET"
  exit 1
fi