#!/usr/bin/env bash

################################################################################
##
##  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.
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################################################################################

BUILDTOOLS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null && pwd)"

PLC4X_ROOT_DIR=.
# BUNDLE_DIR is results of maven release:perform's creation of release candidate
BUNDLE_DIR=${PLC4X_ROOT_DIR}/target/checkout/target

PLC4X_ASF_GIT_URL=https://git-wip-us.apache.org/repos/asf/plc4x.git
PLC4X_ASF_DIST_URL=https://downloads.apache.org/plc4x
PLC4X_ASF_DIST_DYN_URL=https://www.apache.org/dyn/closer.cgi/plc4x
PLC4X_ASF_SVN_RELEASE_URL=https://dist.apache.org/repos/dist/release/plc4x
PLC4X_ASF_SVN_RC_URL=https://dist.apache.org/repos/dist/dev/plc4x

USAGE=

RELEASE_PROP_FILE=${PLC4X_ROOT_DIR}/plc4x.release.properties

function die() {  # [$* msgs]
  [ $# -gt 0 ] && echo "Error: $*"
  exit 1
}

function setUsage() {  # $1: usage string
  USAGE=$1
}

function usage() {  #  [$*: msgs]
  [ $# -gt 0 ] && echo "Error: $*"
  echo "Usage: ${USAGE}"
  exit 1
}

function handleHelp() { # usage: handleHelp "$@"
  if [ "$1" == "-?" ] ||  [ "$1" == "--help" ]; then
    usage
  fi
}

function requireArg() {  # usage: requireArgs "$@"
  if [ $# -lt 1 ] || [[ $1 =~ ^- ]]; then
    usage "missing argument"
  fi
}

function noExtraArgs() { # usage: noExtraArgs "$@"
  [ $# = 0 ] || usage "extra arguments"
}

function getAbsPath() { # $1: rel-or-abs-path 
    echo "$(cd "$(dirname "$1")" >> /dev/null || exit $?; pwd)/$(basename "$1")"
}

# shellcheck disable=SC2046
function confirm () {  # [$1: question]
  while true; do
    # call with a prompt string or use a default                                                                                                                                                   
    /bin/echo -n "${1:-Are you sure?}"
    read -r -p " [y/n] " response
    case $response in
      [yY]) return $(true) ;;
      [nN]) return $(false) ;;
      *) echo "illegal response '$response'" ;;
    esac
  done
}

function dieSuperceeded { # no args
  die "This tool is superceeded with the new maven build tooling.  See src/site/asciidoc/releasing.adoc."
}

function checkPLC4XSourceRootGitDie { # no args; dies if !ok
  [ -d "${PLC4X_ROOT_DIR}/.git" ] || die "Not an PLC4X source root git directory \"${PLC4X_ROOT_DIR}\""
}

function checkUsingMgmtCloneWarn() { # no args; warns if plc4x root isn't a mgmt clone
  CLONE_DIR="$(cd ${PLC4X_ROOT_DIR} > /dev/null || exit $?; pwd)"
  CLONE_DIRNAME="$(basename "${CLONE_DIR}")"
  if [ ! "$(echo ${CLONE_DIRNAME} | grep -o -E '^mgmt-plc4x')" ]; then
    echo "Warning: the PLC4X root dir \"${PLC4X_ROOT_DIR}\" is not a release mgmt clone!"
    return 1
  else
    return 0
  fi 
}

function checkBundleDir() { # no args  returns true/false (0/1)
  if [ -d ${BUNDLE_DIR} ]; then
    return 0
  else
    return 1
  fi
}

function checkVerNum() {  #  $1: X.Y.Z  returns true/false (0/1)
 [[ $1 =~ ^[0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,2}$ ]] && return 0
 return 1
}

function checkVerNumDie() { #  $1: X.Y.Z  dies if not ok
  checkVerNum "$1" || die "Not a X.Y.Z version number \"$1\""
}

function checkRcNum() {  # $1: rc-num   returns true/false (0/1)
 [[ $1 =~ ^[0-9]{1,2}$ ]] && return 0
 return 1
}

function checkRcNumDie() {  # $1: rc-num dies if not ok
  checkRcNum "$1" || die "Not a release candidate number \"$1\""
}

function createReleaseProperties { # X.Y.Z
  VER="$1"
  checkVerNumDie "${VER}"
  echo "releaseNum=${VER}" > ${RELEASE_PROP_FILE}
}

function getReleaseProperty {  # <property-name>
  PN=$1
  PNVAL=$(grep "${PN}" ${RELEASE_PROP_FILE})
  VAL=$(echo "${PNVAL}" | sed -e "s/^${PN}=//")
  echo "${VAL}"
}

function getPLC4XVer() {  # [$1 == "bundle"]
  MSG="getPLC4XVer(): unknown mode \"$1\""
  VER=""
  if [ "$1" == "" ]; then
    VER=$(getReleaseProperty releaseNum)
    MSG="Unable to identify the release version id from ${RELEASE_PROP_FILE}"
  elif [ "$1" == "gradle" ]; then
    die "'getPLC4XVer() gradle' is no longer supported"
  elif [ "$1" == "bundle" ]; then
    # Get the X.Y.Z version from a build generated bundle's name
    BUNDLE=$(echo "${BUNDLE_DIR}"/apache-plc4x-*-source-release.tar.gz)
    VER=$(echo "${BUNDLE}" | grep -o -E '\d+\.\d+\.\d+')
    MSG="Unable to identify the version id from bundle ${BUNDLE}"
  fi
  [ "${VER}" ] || die "${MSG}"
  echo "$VER"
}

function getMajMinVerNum() {  #  $1: X.Y.Z  returns X.Y
  VER=$1; shift
  checkVerNumDie "${VER}"
  MAJ_MIN_VER=$(echo "${VER}" | sed -e 's/\.[0-9][0-9]*$//')
  echo "${MAJ_MIN_VER}"
}

function getReleaseBranch() { # $1: X.Y.Z version
  MAJ_MIN_NUM=$(getMajMinVerNum "$1")
  echo "release/${MAJ_MIN_NUM}"
}

function getReleaseTag() {  # $1: X.Y.Z  [$2: rc-num]
  VER=$1; shift
  checkVerNumDie "${VER}"
  RC_SFX=""
  if [ $# -gt 0 ] && [ "$1" != "" ]; then
    RC_SFX="-RC$1"
  fi
  echo "${VER}${RC_SFX}"
}

function getReleaseTagComment() {  # $1: X.Y.Z  [$2: rc-num]
  VER=$1; shift
  checkVerNumDie "${VER}"
  RC_SFX=""
  if [ $# -gt 0 ] && [ "$1" != "" ]; then
    RC_SFX=" RC$1"
  fi
  echo "Apache PLC4X ${VER}${RC_SFX}"
}