review

#!/bin/bash

## Bash script to automate MongoDB code review submission,
## essentially a wrapper around code_review. Checks to see
## if current repo has been submitted before, if so, reuses
## code_review ID, otherwise generates new one. Also handles
## requisite git commands. This script does not take any
## parameters.

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

## 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/review$$.tmp
CR_ID=""

## Exit if not in a valid git repo:
GITROOT=`git rev-parse --show-toplevel 2>&1`
if [ `echo $GITROOT | grep -c '^fatal: not a git repository'` -gt 0 ]; then
   echo -e "\nERROR: Not in a git repo!"
   echo -e "       Aborting...\n"
   exit;
fi

## Determine $BRANCHNAME:
BRANCHNAME=`git rev-parse --abbrev-ref HEAD`

## Check to see if we have run code_review before. NOTE: this
## makes use of a directory outside of this git repo to store
## this value!
if [ ! -f $WORKFLOW_STATUS_DIR/$BRANCHNAME ]; then
   touch $WORKFLOW_STATUS_DIR/$BRANCHNAME
elif [ `grep -c '^CR_ID=' $WORKFLOW_STATUS_DIR/$BRANCHNAME` -gt 0 ]; then
   CR_ID=`grep CR_ID $WORKFLOW_STATUS_DIR/$BRANCHNAME | cut -d"=" -f2`
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
elif [ `echo $COMMITTED_YET | grep -c 'have diverged'` -gt 0 ]; then
   ## TESTING -- Seemingly required for `review`-ing backport branches:
   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

## If this is our first code_review run, capture the resulting
## issue ID. If not, reuse the existing issue ID:
if [ -z $CR_ID ]; then
   git pull --rebase
   code_review | tee $TMPFILE 2> /dev/null
   CR_ID=`grep 'Issue created.' $TMPFILE | cut -d"/" -f4`
   echo CR_ID=$CR_ID >> $WORKFLOW_STATUS_DIR/$BRANCHNAME
else
   # DO NOT GIT PULL --REBASE BETWEEN CR ROUNDS!
   code_review $CR_ID 2> /dev/null
fi

# Assemble the code review URL:
CR_URL=https://mongodbcr.appspot.com/$CR_ID

# OSX ONLY: Open CR in browser:
open $CR_URL

# LINUX ONLY: Open CR in browser (tries everything):
#xdg-open $CR_URL || sensible-browser $CR_URL || x-www-browser $CR_URL || gnome-open $CR_URL

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

# Cleanup:
rm -f $TMPFILE

# OSX ONLY: Restore user focus back to VS Code:
open -a "Visual Studio Code"