#!/usr/bin/env bash
#-------------------------------------------------------------
#
# Modifications Copyright 2019 Graz University of Technology
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
#-------------------------------------------------------------

function exit_with_usage {
  cat << EOF
release-build - Creates build distributions from a git commit hash or from HEAD.
SYNOPSIS
usage: release-build.sh [--release-prepare | --release-publish | --release-snapshot]
DESCRIPTION
Use maven infrastructure to create a project release package and publish
to staging release location (ToDo:release-location)
and maven staging release repository.
--release-prepare --releaseVersion="0.11.0" --developmentVersion="0.11.0-SNAPSHOT" [--releaseRc="rc1"] [--tag="v0.11.0"] [--gitCommitHash="a874b73"]
This form execute maven release:prepare and upload the release candidate distribution
to the staging release location.
--release-publish --gitCommitHash="a874b73"
Publish the maven artifacts of a release to the staging maven repository.
--release-snapshot [--gitCommitHash="a874b73"]
Publish the maven snapshot artifacts to snapshots maven repository
OPTIONS
--releaseVersion     - Release identifier used when publishing
--developmentVersion - Release identifier used for next development cyce
--releaseRc          - Release RC identifier used when publishing, default 'rc1'
--tag                - Release Tag identifier used when taging the release, default 'v$releaseVersion'
--gitCommitHash      - Release tag, branch name or commit to build from, default master HEAD
--dryRun             - Dry run only, mostly used for testing.
A GPG passphrase is expected as an environment variable
GPG_PASSPHRASE - Passphrase for GPG key used to sign release
EXAMPLES
release-build.sh --release-prepare --releaseVersion="0.11.0" --developmentVersion="0.12.0-SNAPSHOT"
release-build.sh --release-prepare --releaseVersion="0.11.0" --developmentVersion="0.12.0-SNAPSHOT" --releaseRc="rc1" --tag="v0.11.0-rc1"
release-build.sh --release-prepare --releaseVersion="0.11.0" --developmentVersion="0.12.0-SNAPSHOT" --releaseRc="rc1" --tag="v0.11.0-rc1"  --gitCommitHash="a874b73" --dryRun
# Create 0.12 RC2 builds from branch-0.12 
./release-build.sh --release-prepare --releaseVersion="0.12.0" --developmentVersion="0.12.1-SNAPSHOT" --releaseRc="rc2" --tag="v0.12.0-rc2" --gitCommitHash="branch-0.12"
release-build.sh --release-publish --gitCommitHash="a874b73"
release-build.sh --release-publish --gitTag="v0.11.0-rc1"
release-build.sh --release-snapshot
release-build.sh --release-snapshot --gitCommitHash="a874b73"
EOF
  exit 1
}

set -e

if [ $# -eq 0 ]; then
  exit_with_usage
fi


# Process each provided argument configuration
while [ "${1+defined}" ]; do
  IFS="=" read -ra PARTS <<< "$1"
  case "${PARTS[0]}" in
    --release-prepare)
      GOAL="release-prepare"
      RELEASE_PREPARE=true
      shift
      ;;
    --release-publish)
      GOAL="release-publish"
      RELEASE_PUBLISH=true
      shift
      ;;
    --release-snapshot)
      GOAL="release-snapshot"
      RELEASE_SNAPSHOT=true
      shift
      ;;
    --gitCommitHash)
      GIT_REF="${PARTS[1]}"
      shift
      ;;
    --gitTag)
      GIT_TAG="${PARTS[1]}"
      shift
      ;;
    --releaseVersion)
      RELEASE_VERSION="${PARTS[1]}"
      shift
      ;;
    --developmentVersion)
      DEVELOPMENT_VERSION="${PARTS[1]}"
      shift
      ;;
    --releaseRc)
      RELEASE_RC="${PARTS[1]}"
      shift
      ;;
    --tag)
      RELEASE_TAG="${PARTS[1]}"
      shift
      ;;
    --dryRun)
      DRY_RUN="-DdryRun=true"
      shift
      ;;

    *help* | -h)
      exit_with_usage
     exit 0
     ;;
    -*)
     echo "Error: Unknown option: $1" >&2
     exit 1
     ;;
    *)  # No more options
     break
     ;;
  esac
done

if [[ -z "$GPG_PASSPHRASE" ]]; then
    echo 'The environment variable GPG_PASSPHRASE is not set. Enter the passphrase to'
    echo 'unlock the GPG signing key that will be used to sign the release!'
    echo
    stty -echo && printf "GPG passphrase: " && read GPG_PASSPHRASE && printf '\n' && stty echo
fi

if [[ "$RELEASE_PREPARE" == "true" && -z "$RELEASE_VERSION" ]]; then
    echo "ERROR: --releaseVersion must be passed as an argument to run this script"
    exit_with_usage
fi

if [[ "$RELEASE_PREPARE" == "true" && -z "$DEVELOPMENT_VERSION" ]]; then
    echo "ERROR: --developmentVersion must be passed as an argument to run this script"
    exit_with_usage
fi

if [[ "$RELEASE_PUBLISH" == "true"  ]]; then
    if [[ "$GIT_REF" && "$GIT_TAG" ]]; then
        echo "ERROR: Only one argumented permitted when publishing : --gitCommitHash or --gitTag"
        exit_with_usage
    fi
    if [[ -z "$GIT_REF" && -z "$GIT_TAG" ]]; then
        echo "ERROR: --gitCommitHash OR --gitTag must be passed as an argument to run this script"
        exit_with_usage
    fi
fi

if [[ "$RELEASE_PUBLISH" == "true" && "$DRY_RUN" ]]; then
    echo "ERROR: --dryRun not supported for --release-publish"
    exit_with_usage
fi

if [[ "$RELEASE_SNAPSHOT" == "true" && "$DRY_RUN" ]]; then
    echo "ERROR: --dryRun not supported for --release-publish"
    exit_with_usage
fi

# Commit ref to checkout when building
GIT_REF=${GIT_REF:-master}
if [[ "$RELEASE_PUBLISH" == "true" && "$GIT_TAG" ]]; then
    GIT_REF="tags/$GIT_TAG"
fi

#(pwd) doesn't work for me due to having a space in the path
#BASE_DIR=$(pwd)
BASE_DIR="/c/virtual\ D/SystemDS/systemds"
RELEASE_WORK_DIR=$BASE_DIR/target/release2

MVN="mvn"
PUBLISH_PROFILES="-Pdistribution,rat"

if [ -z "$RELEASE_RC" ]; then
  RELEASE_RC="rc1"
fi

if [ -z "$RELEASE_TAG" ]; then
  RELEASE_TAG="v$RELEASE_VERSION-$RELEASE_RC"
fi

#ToDo: release staging location
RELEASE_STAGING_LOCATION="${SYSTEMDS_ROOT}/temp"


echo "  "
echo "-------------------------------------------------------------"
echo "------- Release preparation with the following parameters ---"
echo "-------------------------------------------------------------"
echo "Executing           ==> $GOAL"
echo "Git reference       ==> $GIT_REF"
echo "release version     ==> $RELEASE_VERSION"
echo "development version ==> $DEVELOPMENT_VERSION"
echo "rc                  ==> $RELEASE_RC"
echo "tag                 ==> $RELEASE_TAG"
if [ "$DRY_RUN" ]; then
   echo "dry run ?           ==> true"
fi
echo "  "
echo "Deploying to :"
echo $RELEASE_STAGING_LOCATION
echo "  "

function checkout_code {
    # Checkout code
    eval rm -rf $RELEASE_WORK_DIR
    eval mkdir -p $RELEASE_WORK_DIR
    eval cd $RELEASE_WORK_DIR
    git clone https://github.com/apache/systemds.git
    cd systemds
    git checkout $GIT_REF
    git_hash=`git rev-parse --short HEAD`
    echo "Checked out SystemDS git hash $git_hash"

    git clean -d -f -x
    #rm .gitignore
    #rm -rf .git

    eval cd "$BASE_DIR" #return to base dir
}

if [[ "$RELEASE_PREPARE" == "true" ]]; then
    echo "Preparing release $RELEASE_VERSION"
    # Checkout code
    checkout_code
    eval cd $RELEASE_WORK_DIR/systemds
    #cd /c/virtual\ D/SystemDS/systemds/target/release/systemds

    # Build and prepare the release
    # release:prepare only works on SNAPSHOT. Below command produces
    # artifacts with -SNAPSHOT, and also commits the pom changes to the repo
    $MVN $PUBLISH_PROFILES release:clean release:prepare $DRY_RUN \
    -Darguments="-Dgpg.passphrase=\"$GPG_PASSPHRASE\" \
    -DskipTests" \
    -DreleaseVersion="$RELEASE_VERSION" -DdevelopmentVersion="$DEVELOPMENT_VERSION" -Dtag="$RELEASE_TAG"

    # exit at this point to run followiing steps manually.
    echo "WARNING: Set followinig enviornment variables and run rest of the steps for 'Release Prepare' " 
    echo
    echo "MVN=$MVN"
    echo "PUBLISH_PROFILES=\"$PUBLISH_PROFILES\"" 
    echo "DRY_RUN=$DRY_RUN"
    echo "GPG_PASSPHRASE=$GPG_PASSPHRASE"
    echo "RELEASE_VERSION=$RELEASE_VERSION"
    echo "RELEASE_RC=$RELEASE_RC"
    echo "DEVELOPMENT_VERSION=$DEVELOPMENT_VERSION"
    echo "RELEASE_TAG=$RELEASE_TAG"
    echo "RELEASE_WORK_DIR=$RELEASE_WORK_DIR"
    echo "RELEASE_STAGING_LOCATION=$RELEASE_STAGING_LOCATION"
    echo "BASE_DIR=$BASE_DIR"

    # As fix has been added below to update version information exit to update pom file is not needed.
    # exit 5

    # Update dev/release/target/release/systemds/pom.xml  with similar to following contents which is for 0.13.0 RC1
    #   Update <version>0.13.0</version>
    #   Update <tag>v0.13.0-rc1</tag>
    #sed -i .bak "s|<version>$DEVELOPMENT_VERSION<\/version>|<version>$RELEASE_VERSION<\/version>|" $BASE_DIR/target/release/systemds/pom.xml
    #sed -i .bak "s|<tag>HEAD<\/tag>|<tag>$RELEASE_TAG<\/tag>|" $BASE_DIR/target/release/systemds/pom.xml

    # Remove SNAPSHOT from the version in pom
    sed -i "s/<version>$RELEASE_VERSION-SNAPSHOT<\/version>/<version>$RELEASE_VERSION<\/version>/" /c/virtual\ D/SystemDS/systemds/target/release2/systemds/pom.xml
    eval cd $RELEASE_WORK_DIR/systemds
    ## Rerunning mvn with clean and package goals, as release:prepare changes ordeer for some dependencies like unpack and shade.
    $MVN $PUBLISH_PROFILES clean package $DRY_RUN \
    -Darguments="-Dgpg.passphrase=\"$GPG_PASSPHRASE\" \ 
    -DskipTests" \
    -DreleaseVersion="$RELEASE_VERSION" -DdevelopmentVersion="$DEVELOPMENT_VERSION" -Dtag="$RELEASE_TAG" \
    
    # Pull the latest code (with committed pom changes) and deploy to the local target directory
    checkout_code
    # Remove SNAPSHOT from the version in pom
    sed -i "s/<version>$RELEASE_VERSION-SNAPSHOT<\/version>/<version>$RELEASE_VERSION<\/version>/" /c/virtual\ D/SystemDS/systemds/target/release2/systemds/pom.xml
    eval cd $RELEASE_WORK_DIR/systemds
    GPG_OPTS="-Dgpg.keyname=$GPG_KEYID -Dgpg.passphrase=$GPG_PASSPHRASE"
    # Deploy to /target folder for the next job to pick the artifacts up for there
    CMD="$MVN $PUBLISH_PROFILES deploy \
    -DskiptTests \
    -DaltDeploymentRepository=altDepRepo::default::file:./target \
    ${GPG_OPTS}"

    echo "Executing: " "$CMD"
    $CMD

    eval cd $RELEASE_WORK_DIR
    # To upload the artifacts to the svn-staging (dist.apache.org), call
    # the second script, svn_dev_upload.sh.

# ToDo: release staging location
#    if [ -z "$DRY_RUN" ]; then
#        RELEASE_STAGING_LOCATION="https://dist.apache.org/repos/dist/dev/systemds/"
#        svn co $RELEASE_STAGING_LOCATION svn-release-staging
#        mkdir -p svn-release-staging/$RELEASE_VERSION-$RELEASE_RC
#        cp $RELEASE_WORK_DIR/systemml/target/systemml-*-bin.* svn-release-staging/$RELEASE_VERSION-$RELEASE_RC/
#        cp $RELEASE_WORK_DIR/systemml/target/systemml-*-src.* svn-release-staging/$RELEASE_VERSION-$RELEASE_RC/
#
#        cd svn-release-staging/$RELEASE_VERSION-$RELEASE_RC/
#        rm -f *.asc
#        for i in *.zip *.tgz *.tar.gz; do gpg --output $i.asc --detach-sig --armor $i; done
#        rm -f *.sha512
#        for i in *.zip *.tgz *.tar.gz; do shasum -a 512 $i > $i.sha512; done
#
#        cd .. #exit $RELEASE_VERSION-$RELEASE_RC/
#
#        svn add $RELEASE_VERSION-$RELEASE_RC/
#        svn ci -m"Apache SystemML $RELEASE_VERSION-$RELEASE_RC"
#    fi


    eval cd "$BASE_DIR" #exit target

    exit 0
fi

#ToDo: fix release deployment
if [[ "$RELEASE_PUBLISH" == "true" ]]; then
    echo "Preparing release $RELEASE_VERSION"
    # Checkout code
    checkout_code
    cd $RELEASE_WORK_DIR/systemds

    #Deploy scala 2.10
#    mvn -DaltDeploymentRepository=apache.releases.https::default::https://repository.apache.org/service/local/staging/deploy/maven2 clean package gpg:sign install:install deploy:deploy -DskiptTests -Darguments="-DskipTests -Dgpg.passphrase=\"$GPG_PASSPHRASE\"" -Dgpg.passphrase="$GPG_PASSPHRASE" $PUBLISH_PROFILES

    mvn -DaltDeploymentRepository=$SYSTEMDS_ROOT/temp clean package gpg:sign install:install deploy:deploy -DskiptTests -Darguments="-DskipTests -Dgpg.passphrase=\"$GPG_PASSPHRASE\"" -Dgpg.passphrase="$GPG_PASSPHRASE" $PUBLISH_PROFILES

    cd "$BASE_DIR" #exit target

    exit 0
fi

#ToDo: fix snapshot deployment
#if [[ "$RELEASE_SNAPSHOT" == "true" ]]; then
#    # Checkout code
#    checkout_code
#    cd $RELEASE_WORK_DIR/systemds
#
#    CURRENT_VERSION=$($MVN help:evaluate -Dexpression=project.version \
#    | grep -v INFO | grep -v WARNING | grep -v Download)
#
#    # Publish Bahir Snapshots to Maven snapshot repo
#    echo "Deploying SystemDS SNAPSHOT at '$GIT_REF' ($git_hash)"
#    echo "Publish version is $CURRENT_VERSION"
#    if [[ ! $CURRENT_VERSION == *"SNAPSHOT"* ]]; then
#        echo "ERROR: Snapshots must have a version containing SNAPSHOT"
#        echo "ERROR: You gave version '$CURRENT_VERSION'"
#        exit 1
#    fi
#
#    #Deploy scala 2.10
#    $MVN -DaltDeploymentRepository=apache.snapshots.https::default::https://repository.apache.org/content/repositories/snapshots clean package gpg:sign install:install deploy:deploy -DskiptTests -Darguments="-DskipTests -Dgpg.passphrase=\"$GPG_PASSPHRASE\"" -Dgpg.passphrase="$GPG_PASSPHRASE" $PUBLISH_PROFILES
#
#    cd "$BASE_DIR" #exit target
#    exit 0
#fi


cd "$BASE_DIR" #return to base dir
echo "ERROR: wrong execution goals"
exit_with_usage