GetPulls

#!/bin/bash

### It fetches pullRequests made against a given <repository>.
### For cmsdist repo (cms-sw user), it only fecthes those against "comp" branch.
### For deployment repo (dmwm user), it's going to fetch everything.
### It creates a new stg patch for every pull request.
###
### Usage: GetPulls -h
### Usage: GetPulls -r <repository> <list of pull request numbers separated by space>
### Usage: Example: GetPulls -r cmsdist 263 266 267

usage()
{
  perl -ne '/^### Usage:/ && do { s/^### ?//; print }' < $0
  exit 1
}

help()
{
  perl -ne '/^###/ && do { s/^### ?//; print }' < $0
  exit 0
}

for arg; do
  case $arg in
    -h) help ;;
    -r) REPO=$2; shift; shift ;;
    -*) usage ;;
  esac
done

cmsdist()
{
  URL="https://github.com/${USER}/${REPO}/pull"
  API="https://api.github.com/repos/${USER}/${REPO}/pulls"
  stg init

  for PULL in $PULLS; do
    echo "Pull: $URL/$PULL"
    authdate=`curl -L -ks ${URL}/${PULL}.patch | head -n4 | egrep -o 'Date:.*' | cut -d: -f 2- | sed 's/^ *//g'` 
    author=`curl -L -ks ${URL}/${PULL}.patch | head -n4 | egrep -o 'From:.*' | cut -d: -f 2-| sed 's/^ *//g'` 
    title=`curl -s ${API}/${PULL} | grep \"title\": | cut -d\" -f4 | sed 's/\(^.\)/\u\1/g'`
    echo "Summary: authdate=$authdate, author=$author, title=$title"
  
    stg new -m "${title%\.}. Close #$PULL." pullreq-$PULL --author "$author" --authdate "$authdate" 
    curl -L -ks ${URL}/${PULL}.diff | git apply
    # When there are new files, we need to add them
    git add -A
    stg refresh

    echo ""
    sleep 1
  done
}

deployment()
{
  URL="https://github.com/${USER}/${REPO}/pull"
  API="https://api.github.com/repos/${USER}/${REPO}/pulls"
  stg init

  for PULL in $PULLS; do
    echo "Pull: $URL/$PULL"

    authdate=`curl -L -ks ${URL}/${PULL}.patch | head -n4 | egrep -o 'Date:.*' | cut -d: -f 2- | sed 's/^ *//g'`
    author=`curl -L -ks ${URL}/${PULL}.patch | head -n4 | egrep -o 'From:.*' | cut -d: -f 2- | sed 's/^ *//g'`
    title=`curl -s ${API}/${PULL} | grep \"title\": | cut -d\" -f4 | sed 's/\(^.\)/\u\1/g'`
    echo "Summary: authdate=$authdate, author=$author, title=$title"

    stg new -m "${title%\.}. Close #$PULL." pullreq-$PULL --author "$author" --authdate "$authdate"
    curl -L -ks ${URL}/${PULL}.diff | git apply
    # When there are new files, we need to add them
    git add -A
    stg refresh

    echo ""
    sleep 1
  done
}

PULLS=$@

if [ "$REPO" == "cmsdist" ]; then
  USER="cms-sw"
  cmsdist
elif [ "$REPO" == "deployment" ]; then
  USER="dmwm"
  deployment
else
  echo "$REPO I do *not* know this repository. Quitting ..."
  exit 2
fi

exit 0