#!/bin/bash

parent="release/"
branchout="master" # if this is the first time the release branch is created it has to be from master after all the ut,it,sc tests/analysis.

usage="usage:\n$0 <release branch [p1b]> <git folder [application]> <branch from [staging]> [options]\noptions:\n -d\tdelete the branches only"
branches=("master" "staging" "develop")
opt_d=0
for arg in $@; do
  if [[ "-d" == "$arg" ]];then
    opt_d=1
    break
  fi
done

# get release name
if [[ "$1" == "" ]]; then
  echo "git release branch is empty"
  echo -e "$usage"
  exit 2
fi
release="$1"
if [[ "$1" == /* ]]; then
  parent=""
  release="${release:1}" # remove the begining /
fi

# get git folder name
if [[ "$2" == "" ]]; then
  echo "git folder is empty"
  echo -e "$usage"
  exit 1
fi
folder="$PWD/$2"

# get release name
if [[ "$3" == "" ]]; then
  echo "branch from is empty"
  echo "$branchout branch will be used as branch out"
else
  branchout="$3"
fi

# cd to the git folder and check if exists
cd "$folder"
if [[ "$?" != 0  ]]; then
  echo "incorrect git folder"
  echo -e "$usage"
  exit 4
fi
echo "$PWD"

previous=$(git branch --show-current)

git checkout "$branchout"
if [[ "$?" != 0  ]]; then
  echo "cannot checkout to $branchout"
  echo "$usage"
  exit 5
fi

# start creating
echo "Follwoing branches will be created:"
for branch in ${branches[@]}; do
  echo " - $parent$release/$branch"
done
echo

message="I Confirm $parent$release on $( basename $folder )"
echo $message
echo "----------"
read -p "continue [ ${message^^} ] (type in lowercase) : " confirm
echo

if [[ ! ( "$confirm" == "${message,,}" ) ]]; then
  echo "Aborted ... "
  exit 0
fi

for branch in ${branches[@]}; do
  echo " ------------------------------------------------------------ "
  echo " ----- check out to $branchout"
  git checkout "$branchout"
  echo " ----- deleting local $parent$release/$branch"
  git branch   -d "$parent$release/$branch"
  echo " ----- creating local  $parent$release/$branch"
  git checkout -b "$parent$release/$branch"
  echo " ----- pushing origin $parent$release/$branch"
  git push origin "$parent$release/$branch" --force
done

git checkout $previous