#!/bin/sh
# Files:
#  /etc/ssh/ssh_config
#	Host jdgb

gb=https://www.yatex.org/gitbucket/
user=`logname`
user=$USER
case "$user" in
  j21??) ryear=2021 ;;
  j22??) ryear=2022 ;;
  #j[23][0-9][0-9][0-9])
  #	ryear=20`expr "$user" : 'j\(..\)..'` ;;
  *)	# We cannot use "date" command because of its option incompatibility
	ryear=`ruby -e 'print (Time.now-120*24*3600).strftime("%Y")'` ;;
esac
repo=ssh://git@jdgb/JD${ryear}student/Ruby.git
edom=itl.koeki-u.ac.jp
trashbin=$HOME/Trash
trashmsg="がサーバ上の最新版と食い違ったので
~/Trash ディレクトリに上書きコピーしておきました。"
export GIT_SSH=/usr/koeki/bin/jdgit-ssh

if ! curl -m 3 -s $gb/signin >/dev/null; then
  echo "No network" >&2; exit 1
fi

gitssh() {
  ssh -F /usr/koeki/etc/gbrepo/.ssh/config "$@"
}
start() {
  if ! grep -q "email.*$USER" $HOME/.gitconfig; then
    if [ -s $HOME/.email ]; then
      email=`grep -v '^#' $HOME/.email|head -1`
    else
      email=$USER@$edom
    fi
    getent passwd `logname` | if IFS=: read u p uid gid gecos rest; then
      git config --global user.name  "$gecos"
      git config --global user.email "$email"
    fi
  fi
  if [ -d $HOME/Ruby/.git ]; then
    git -C $HOME/Ruby pull
    exit $?
  elif [ -d $HOME/Ruby ]; then
    td=`mktemp -d -t startRuby`
    if [ -n "$td" -a -w "$td" ]; then
      trap "rm -rf "$td"" INT HUP EXIT TERM
      (cd "$td"
       git clone "$repo" && rsync -axH Ruby $HOME
      )
    fi
  else
    git clone $repo
  fi
  
  (cd $HOME/Ruby
   git config pull.rebase true
   git config --add merge.ff false
   git config --add pull.ff only
   if ! git fetch origin $USER; then
     git branch $USER
   fi
   git checkout -f $USER
   git push --set-upstream origin $USER 
   git push
  )
}
resetGit() {
  rm -rf $HOME/Ruby/.git 2>/dev/null
  start
}
ci() {
  cd $HOME/Ruby
  git add .
  git commit -m "${COMMIT_MESSAGE:-`date +'%F %T'`}"
  git pull "$@"; rc=$?
  if [ x$rc != x0 ]; then
    files=`git ls-files -u | awk '{print $NF}' | sort -u`
    if [ -n "$files" ]; then
      [ -d "$trashbin" ] || mkdir "$trashbin"
      cp $files "$trashbin"
      msg="$files $trashmsg"
      echo "----------------------------------"
      echo "$trashmsg"
      echo "----------------------------------"
      ls -lF $trashbin
      zenity --width 600 --info --text "$trashmsg"
    fi
    git rebase --skip || git rebase --abort
  fi
  git push || git push --set-upstream origin "$USER"
  echo git-ci "$@" ended with $rc
  return $rc
}
case `logname` in
  c1*|j2*)	;;
  yuuji)	;;
  *)	exit 0 	;;
esac
case "`basename $0`" in
  jdgit-ssh)	gitssh "$@" ;;
  start*)	start ;;
  reset*)	resetGit ;;
  ci*)		ci ;;
  merge*)	ci && ci origin master ;;
  jdgit)	git "$@" ;;
esac