#!/usr/bin/env bash
#
# A more capable sbt runner, coincidentally also called sbt.
# Author: Paul Phillips <paulp@improving.org>
# https://github.com/paulp/sbt-extras
#
# Generated from http://www.opensource.org/licenses/bsd-license.php
# Copyright (c) 2011, Paul Phillips. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#     * Neither the name of the author nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -o pipefail

declare -r sbt_release_version="1.12.11"
declare -r sbt_unreleased_version="1.12.11"

declare -r latest_213="2.13.18"
declare -r latest_212="2.12.21"
declare -r latest_211="2.11.12"
declare -r latest_210="2.10.7"
declare -r latest_29="2.9.3"
declare -r latest_28="2.8.2"

declare -r buildProps="project/build.properties"

declare -r sbt_launch_ivy_release_repo="https://repo.typesafe.com/typesafe/ivy-releases"
declare -r sbt_launch_ivy_snapshot_repo="https://repo.scala-sbt.org/scalasbt/ivy-snapshots"
declare -r sbt_launch_mvn_release_repo="https://repo1.maven.org/maven2"
declare -r sbt_launch_mvn_snapshot_repo="https://repo.scala-sbt.org/scalasbt/maven-snapshots"

declare -r default_jvm_opts_common="-Xms512m -Xss2m -XX:MaxInlineLevel=18"
declare -r noshare_opts="-Dsbt.global.base=project/.sbtboot -Dsbt.boot.directory=project/.boot -Dsbt.ivy.home=project/.ivy -Dsbt.coursier.home=project/.coursier"

declare sbt_jar sbt_dir sbt_create sbt_version sbt_script sbt_new
declare sbt_explicit_version
declare verbose noshare batch trace_level

declare java_cmd="java"
declare sbt_launch_dir="$HOME/.sbt/launchers"
declare sbt_launch_repo

# pull -J and -D options to give to java.
declare -a java_args scalac_args sbt_commands residual_args

# args to jvm/sbt via files or environment variables
declare -a extra_jvm_opts extra_sbt_opts

echoerr() { echo >&2 "$@"; }
vlog()    { [[ -n "$verbose" ]] && echoerr "$@"; }
die()     {
  echo "Aborting: $*"
  exit 1
}

setTrapExit() {
  # save stty and trap exit, to ensure echo is re-enabled if we are interrupted.
  SBT_STTY="$(stty -g 2>/dev/null)"
  export SBT_STTY

  # restore stty settings (echo in particular)
  onSbtRunnerExit() {
    [ -t 0 ] || return
    vlog ""
    vlog "restoring stty: $SBT_STTY"
    stty "$SBT_STTY"
  }

  vlog "saving stty: $SBT_STTY"
  trap onSbtRunnerExit EXIT
}

# this seems to cover the bases on OSX, and someone will
# have to tell me about the others.
get_script_path() {
  local path="$1"
  [[ -L "$path" ]] || {
    echo "$path"
    return
  }

  local -r target="$(readlink "$path")"
  if [[ "${target:0:1}" == "/" ]]; then
    echo "$target"
  else
    echo "${path%/*}/$target"
  fi
}

script_path="$(get_script_path "${BASH_SOURCE[0]}")"
declare -r script_path
script_name="${script_path##*/}"
declare -r script_name

init_default_option_file() {
  local overriding_var="${!1}"
  local default_file="$2"
  if [[ ! -r "$default_file" && "$overriding_var" =~ ^@(.*)$ ]]; then
    local envvar_file="${BASH_REMATCH[1]}"
    if [[ -r "$envvar_file" ]]; then
      default_file="$envvar_file"
    fi
  fi
  echo "$default_file"
}

sbt_opts_file="$(init_default_option_file SBT_OPTS .sbtopts)"
sbtx_opts_file="$(init_default_option_file SBTX_OPTS .sbtxopts)"
jvm_opts_file="$(init_default_option_file JVM_OPTS .jvmopts)"

build_props_sbt() {
  [[ -r "$buildProps" ]] &&
    grep '^sbt\.version' "$buildProps" | tr '=\r' ' ' | awk '{ print $2; }'
}

set_sbt_version() {
  sbt_version="${sbt_explicit_version:-$(build_props_sbt)}"
  [[ -n "$sbt_version" ]] || sbt_version=$sbt_release_version
  export sbt_version
}

url_base() {
  local version="$1"

  case "$version" in
    0.7.*)     echo "https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/simple-build-tool" ;;
    0.10.*)    echo "$sbt_launch_ivy_release_repo" ;;
    0.11.[12]) echo "$sbt_launch_ivy_release_repo" ;;
    0.*-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9][0-9][0-9]) # ie "*-yyyymmdd-hhMMss"
      echo          "$sbt_launch_ivy_snapshot_repo" ;;
    0.*)       echo "$sbt_launch_ivy_release_repo" ;;
    *-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]T[0-9][0-9][0-9][0-9][0-9][0-9]) # ie "*-yyyymmddThhMMss"
      echo          "$sbt_launch_mvn_snapshot_repo" ;;
    *)         echo "$sbt_launch_mvn_release_repo" ;;
  esac
}

make_url() {
  local version="$1"

  local base="${sbt_launch_repo:-$(url_base "$version")}"

  case "$version" in
    0.7.*)     echo "$base/sbt-launch-0.7.7.jar" ;;
    0.10.*)    echo "$base/org.scala-tools.sbt/sbt-launch/$version/sbt-launch.jar" ;;
    0.11.[12]) echo "$base/org.scala-tools.sbt/sbt-launch/$version/sbt-launch.jar" ;;
    0.*)       echo "$base/org.scala-sbt/sbt-launch/$version/sbt-launch.jar" ;;
    *)         echo "$base/org/scala-sbt/sbt-launch/$version/sbt-launch-${version}.jar" ;;
  esac
}

addJava()      {
  vlog "[addJava] arg = '$1'"
  java_args+=("$1")
}
addSbt()       {
  vlog "[addSbt] arg = '$1'"
  sbt_commands+=("$1")
}
addScalac()    {
  vlog "[addScalac] arg = '$1'"
  scalac_args+=("$1")
}
addResidual()  {
  vlog "[residual] arg = '$1'"
  residual_args+=("$1")
}

addResolver() { addSbt "set resolvers += $1"; }

addDebugger() { addJava "-Xdebug" && addJava "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=$1"; }

setThisBuild() {
  vlog "[addBuild] args = '$*'"
  local key="$1" && shift
  addSbt "set $key in ThisBuild := $*"
}
setScalaVersion() {
  [[ "$1" == *"-SNAPSHOT" ]] && addResolver 'Resolver.sonatypeRepo("snapshots")'
  addSbt "++ $1"
}
setJavaHome() {
  java_cmd="$1/bin/java"
  setThisBuild javaHome "_root_.scala.Some(file(\"$1\"))"
  export JAVA_HOME="$1"
  export JDK_HOME="$1"
  export PATH="$JAVA_HOME/bin:$PATH"
}

getJavaVersion() {
  local -r str=$("$1" -version 2>&1 | grep -E -e '(java|openjdk) version' | awk '{ print $3 }' | tr -d '"')

  # java -version on java8 says 1.8.x
  # but on 9 and 10 it's 9.x.y and 10.x.y.
  if [[ "$str" =~ ^1\.([0-9]+)(\..*)?$ ]]; then
    echo "${BASH_REMATCH[1]}"
  # Fixes https://github.com/dwijnand/sbt-extras/issues/326
  elif [[ "$str" =~ ^([0-9]+)(\..*)?(-ea)?$ ]]; then
    echo "${BASH_REMATCH[1]}"
  elif [[ -n "$str" ]]; then
    echoerr "Can't parse java version from: $str"
  fi
}

checkJava() {
  # Warn if there is a Java version mismatch between PATH and JAVA_HOME/JDK_HOME

  [[ -n "$JAVA_HOME" && -e "$JAVA_HOME/bin/java"    ]] && java="$JAVA_HOME/bin/java"
  [[ -n "$JDK_HOME" && -e