#!/bin/bash
#
# Copyright (c) 2019 Alibaba Group Holding Limited. All Rights Reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation. Alibaba designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#

to_stderr() {
    echo "$@" >&2
}

error() {
    to_stderr "ERROR: $1"
    exit ${2:-126}
}

warning() {
    to_stderr "WARNING: $1"
}

subrepos="corba jaxp jaxws langtools jdk hotspot nashorn"

# default options
site="github"
connect="https"
REPO_PREFIX="dragonwell8_"
DEPTH=1000
BRANCH="master"
RELEASE=""

usage() {
      echo "usage: $0 [-h|--help] [-b|--branch branch_name] [-s|--site github|gitlab] [-c|--connection https|ssh]"
      exit 1
}

# parse options
while [ $# -gt 0 ]
do
  case $1 in
    -h | --help )
      usage
      ;;

    -b | --branch )
      shift;
      BRANCH=$1
      ;;

    -r | --release )
      shift;
      RELEASE="true"
      ;;

    -s | --site )
      shift;
      site=$1
      if [[ $site == "github" ]]; then
        REPO_PREFIX="dragonwell8_"
      elif [[ $site == "gitlab" ]]; then
        REPO_PREFIX="jdk8u_"
      else
        usage
      fi
      ;;

    -c | --connection )
      shift;
      connect=$1
      if [ "x$connect" != "xssh" -a "x$connect" != "xhttps" ]; then
        usage
      fi
      ;;


    *)  # unknown option
      ;;
  esac
  shift
done

if [ "x$site" = "xgithub" -a "x$connect" = "xssh" ]; then
    GITURL="git@github.com:alibaba"
elif [ "x$site" = "xgithub" -a "x$connect" = "xhttps" ]; then
    GITURL="https://github.com/alibaba"
elif [ "x$site" = "xgitlab" -a "x$connect" = "xssh" ]; then
    GITURL="git@gitlab.alibaba-inc.com:dragonwell"
elif [ "x$site" = "xgitlab" -a "x$connect" = "xhttps" ]; then
    GITURL="http://gitlab.alibaba-inc.com/dragonwell"
else
    usage
fi

GIT=$(command -v git)
if [ "x$GIT" = "x" ]; then
  error "Could not locate git command"
fi

echo "Check directories"
for repo in ${subrepos}; do
  if [[ -d ${repo} ]]; then
    error "directory ${repo} already exist"
  fi
done

echo "Start clone..."
for repo in ${subrepos}; do
  REPOURL=${GITURL}/${REPO_PREFIX}${repo}.git
  #CLONEOPTS="--depth ${DEPTH}"
  echo ${GIT} clone ${CLONEOPTS} ${REPOURL} ${repo}
  ${GIT} clone ${CLONEOPTS} ${REPOURL} ${repo}
  result=$?
  if [ $result  != 0 ]; then
    error "failed to clone ${repo}"
  fi
  # checkout to specific branch
  if [ $BRANCH != "master" ]; then
    cd ${repo}
    ${GIT} checkout origin/${BRANCH} -b ${BRANCH}
    result=$?
    if [ $result  != 0 ]; then
      ${GIT} checkout tags/${BRANCH} -b ${BRANCH}
      result=$?
      if [ $result  != 0 ]; then
        if [ -n "${RELEASE}" ]; then
          error "failed to checkout ${repo} to ${BRANCH}"
        fi
      fi
    fi
    cd ..
  fi
done