push

#!/bin/bash

## Once LGTM has been attained in CR, this script pushes to
## GitHub and provides easy clickable steps to the remaining
## non-automatable tasks. Must be called within the Git repo
## you wish to push. Supports force-pushing if requested.

############################################################
## YOUR VALUES ##
#################

## Your github username:
GITUSER=your_git_user

## Your docs workspace (i.e. where to git clone to)
## If you use a ~ in the path, don't quote the value:
WORKSPACE=~/doc_workspace

## Directory to store workflow-specific status:
WORKFLOW_STATUS_DIR=$WORKSPACE/workflow

############################################################
## BEGIN SCRIPT ##
##################

TMPFILE=/tmp/push$$.tmp

FORCE=""

## Check for FORCE override: for force pushing if you know
## what you're doing:
while getopts ":f" opt; do
  case ${opt} in
    f )
      FORCE=1
      ;;
    \? )
      echo -e "\nERROR: Invalid option: $OPTARG" 1>&2
      echo "       push only supports the optional -f flag"
      echo -e "       for force pushing\n"
      exit
      ;;
  esac
done

# Must be in a git repo:
BRANCH=`git rev-parse --abbrev-ref HEAD`
if [ `echo $BRANCH | grep -c '^fatal: not a git repository'` -gt 0 ]; then
   echo -e "\nERROR: Not in a git repo!"
   echo -e "       Aborting...\n"
   exit;
fi

## Get exiting GIT_EDITOR, to restore later:
OLD_GIT_EDITOR=`echo $GIT_EDITOR`

## Set custom giteditor_autoamend as GIT_EDITOR:
export GIT_EDITOR=giteditor_autoamend

# Show user current status, before taking any action:
git status

## Have we committed yet on this branch?
COMMITTED_YET=`git status -uno | grep upstream`

## If this is our first commit, prompt for a commit message,
## otherwise silently amend the existing commit:
if [ `echo $COMMITTED_YET | grep -c 'up to date'` -gt 0 ]; then
   echo -e "\nINPUT REQUIRED: You have not committed anything yet!"
   read -p '                COMMIT MESSAGE: ' COMMIT_MESSAGE
   git add .
   git commit -m "$COMMIT_MESSAGE"
elif [ `echo $COMMITTED_YET | grep -c 'is ahead of'` -gt 0 ]; then
   git add .
   git commit --amend
else
   echo -e "\nERROR: Unable to determine git commit status!"
   echo -e "       You must manually commit or otherwise correct"
   echo -e "       the situation!"
   echo -e "       Aborting...\n"
   exit;
fi

# Collect info:
CR_ID=`grep CR_ID $WORKFLOW_STATUS_DIR/$BRANCH 2>/dev/null | cut -d"=" -f2`
JIRA=`echo $BRANCH | awk -F\- '{print $1"-"$2}'`

# Rebase
git pull --rebase 2>&1 | tee $TMPFILE

# If conflicts are detected, present them and exit,
# if no conflicts, push the changes:
if [ `grep -ic 'Merge conflict' $TMPFILE` -gt 0 ]; then
   CONFLICTING_FILES=`grep 'Merge conflict' $TMPFILE | awk -F'in ' '{print $2}'`
   echo -e "\nERROR: Merge conflicts detected in rebase! You can:\n"
   echo -e "     - Manually resolve them and then:"
   echo -e "           git add ."
   echo -e "           git rebase --continue"
   echo -e "           push"
   echo -e "     - Or cancel this operation with"
   echo -e "           git rebase --abort\n"
   echo -e "CONFLICTING FILES:\n"
   echo $CONFLICTING_FILES
   echo ""
   rm -f $TMPFILE
   exit;
elif [ ! $FORCE ]; then
   git push origin $BRANCH
else
   git push -f origin $BRANCH
fi

# Provide links (clickable in VS Code and iTerm2):
echo -e "\n##############################  PUBLISH READY!  ##############################"

GITHUB_URL="https://github.com/$GITUSER/docs/pull/new/$BRANCH"
echo -e "\n   1. PULL REQUEST: $GITHUB_URL"

if [ `echo $BRANCH | egrep -c '(^DOCS-|^DOCSP-)'` -gt 0 ]; then
   JIRA_URL="https://jira.mongodb.org/browse/$JIRA"
   echo -e "\n   2. CLOSE TICKET: $JIRA_URL"
fi

if [ ! -z $CR_ID ]; then
   CR_URL=https://mongodbcr.appspot.com/$CR_ID
   echo -e "\n   3. CLOSE THE CR: $CR_URL"
fi

echo -e "\n##############################################################################\n"

# Replace GIT_EDITOR with original value:
GIT_EDITOR=`echo $OLD_GIT_EDITOR`

rm -f $TMPFILE