#!/usr/bin/env bash

###  ------------------------------- ###
###  Helper methods for BASH scripts ###
###  ------------------------------- ###

die() {
  echo "$@" 1>&2
  exit 1
}

realpath () {
(
  TARGET_FILE="$1"
  CHECK_CYGWIN="$2"

  cd "$(dirname "$TARGET_FILE")"
  TARGET_FILE=$(basename "$TARGET_FILE")

  COUNT=0
  while [ -L "$TARGET_FILE" -a $COUNT -lt 100 ]
  do
      TARGET_FILE=$(readlink "$TARGET_FILE")
      cd "$(dirname "$TARGET_FILE")"
      TARGET_FILE=$(basename "$TARGET_FILE")
      COUNT=$(($COUNT + 1))
  done

  if [ "$TARGET_FILE" == "." -o "$TARGET_FILE" == ".." ]; then
    cd "$TARGET_FILE"
    TARGET_FILEPATH=
  else
    TARGET_FILEPATH=/$TARGET_FILE
  fi

  # make sure we grab the actual windows path, instead of cygwin's path.
  if [[ "x$CHECK_CYGWIN" == "x" ]]; then
    echo "$(pwd -P)/$TARGET_FILE"
  else
    echo $(cygwinpath "$(pwd -P)/$TARGET_FILE")
  fi
)
}

# TODO - Do we need to detect msys?

# Uses uname to detect if we're in the odd cygwin environment.
is_cygwin() {
  local os=$(uname -s)
  case "$os" in
    CYGWIN*) return 0 ;;
    *)  return 1 ;;
  esac
}

# This can fix cygwin style /cygdrive paths so we get the
# windows style paths.
cygwinpath() {
  local file="$1"
  if is_cygwin; then
    echo $(cygpath -w $file)
  else
    echo $file
  fi
}

# Make something URI friendly
make_url() {
  url="$1"
  local nospaces=${url// /%20}
  if is_cygwin; then
    echo "/${nospaces//\\//}"
  else
    echo "$nospaces"
  fi
}

# This crazy function reads in a vanilla "linux" classpath string (only : are separators, and all /),
# and returns a classpath with windows style paths, and ; separators.
fixCygwinClasspath() {
  OLDIFS=$IFS
  IFS=":"
  read -a classpath_members <<< "$1"
  declare -a fixed_members
  IFS=$OLDIFS
  for i in "${!classpath_members[@]}"
  do
    fixed_members[i]=$(realpath "${classpath_members[i]}" "fix")
  done
  IFS=";"
  echo "${fixed_members[*]}"
  IFS=$OLDIFS
}

# Fix the classpath we use for cygwin.
fix_classpath() {
  cp="$1"
  if is_cygwin; then
    echo "$(fixCygwinClasspath "$cp")"
  else 
    echo "$cp"
  fi
}
# Detect if we should use JAVA_HOME or just try PATH.
get_java_cmd() {
  if [[ -n "$JAVA_HOME" ]] && [[ -x "$JAVA_HOME/bin/java" ]];  then
    echo "$JAVA_HOME/bin/java"
  else
    echo "java"
  fi
}

echoerr () {
  echo 1>&2 "$@"
}
vlog () {
  [[ $verbose || $debug ]] && echoerr "$@"
}
dlog () {
  [[ $debug ]] && echoerr "$@"
}
execRunner () {
  # print the arguments one to a line, quoting any containing spaces
  [[ $verbose || $debug ]] && echo "# Executing command line:" && {
    for arg; do
      if printf "%s\n" "$arg" | grep -q ' '; then
        printf "\"%s\"\n" "$arg"
      else
        printf "%s\n" "$arg"
      fi
    done
    echo ""
  }

  # we use "exec" here for our pids to be accurate.
  exec "$@"
}
addJava () {
  dlog "[addJava] arg = '$1'"
  java_args+=( "$1" )
}
addApp () {
  dlog "[addApp] arg = '$1'"
  app_commands+=( "$1" )
}
addResidual () {
  dlog "[residual] arg = '$1'"
  residual_args+=( "$1" )
}
addDebugger () {
  addJava "-Xdebug"
  addJava "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=$1"
}
# a ham-fisted attempt to move some memory settings in concert
# so they need not be messed around with individually.
get_mem_opts () {
  local mem=${1:-1024}
  local perm=$(( $mem / 4 ))
  (( $perm > 256 )) || perm=256
  (( $perm < 1024 )) || perm=1024
  local codecache=$(( $perm / 2 ))

  # if we detect any of these settings in ${java_opts} we need to NOT output our settings.
  # The reason is the Xms/Xmx, if they don't line up, cause errors.
  if [[ "${java_opts}" == *-Xmx* ]] ||
     [[ "${java_opts}" == *-Xms* ]] ||
     [[ "${java_opts}" == *-XX:MaxPermSize* ]] ||
     [[ "${java_opts}" == *-XX:ReservedCodeCacheSize* ]] ||
     # check java arguments for settings, too
     [[ "${java_args[@]}" == *-Xmx* ]] ||
     [[ "${java_args[@]}" == *-Xms* ]] || 
     [[ "${java_args[@]}" == *-XX:MaxPermSize* ]] || 
     [[ "${java_args[@]}" == *-XX:ReservedCodeCacheSize* ]];
  then
    echo ""
  elif [[ !$no_version_check ]] && [[ "$java_version" > "1.8" ]]; then
    echo "-Xms${mem}m -Xmx${mem}m -XX:ReservedCodeCacheSize=${codecache}m"
  else 
    echo "-Xms${mem}m -Xmx${mem}m -XX:MaxPermSize=${perm}m -XX:ReservedCodeCacheSize=${codecache}m"
  fi
}
require_arg () {
  local type="$1"
  local opt="$2"
  local arg="$3"
  if [[ -z "$arg" ]] || [[ "${arg:0:1}" == "-" ]]; then
    die "$opt requires <$type> argument"
  fi
}
is_function_defined() {
  declare -f "$1" > /dev/null
}

# Attempt to detect if the script is running via a GUI or not
# TODO - Determine where/how we use this generically
detect_terminal_for_ui() {
  [[ ! -t 0 ]] && [[ "${#residual_args}" == "0" ]] && {
    echo "true"
  }
  # SPECIAL TEST FOR MAC
  [[ "$(uname)" == "Darwin" ]] && [[ "$HOME" == "$PWD" ]] && [[ "${#residual_args}" == "0" ]] && {
    echo "true"
  }
}

# Processes incoming arguments and places them in appropriate global variables.  called by the run method.
process_args () {
  local no_more_snp_opts=0
  while [[ $# -gt 0 ]]; do
    case "$1" in
             --) shift && no_more_snp_opts=1 && break ;;
       -h|-help) usage; exit 1 ;;
    -v|-verbose) verbose=1 && shift ;;
      -d|-debug) debug=1 && shift ;;

    -no-version-check) no_version_check=1 && shift ;;

           -mem) require_arg integer "$1" "$2" && app_mem="$2" && shift 2 ;;
     -jvm-debug) require_arg port "$1" "$2" && addDebugger $2 && shift 2 ;;

     -java-home) require_arg path "$1" "$2" && java_cmd="$2/bin/java" && shift 2 ;;

            -D*) addJava "$1" && shift ;;
            -J*) addJava "${1:2}" && shift ;;
              *) addResidual "$1" && shift ;;
    esac
  done

  if [[ no_more_snp_opts ]]; then
    while [[ $# -gt 0 ]]; do
      addResidual "$1" && shift
    done
  fi

  is_function_defined process_my_args && {
    myargs=("${residual_args[@]}")
    residual_args=()
    process_my_args "${myargs[@]}"
  }
}

# Actually runs the script.
run() {
  # TODO - check for sane environment

  # process the combined args, then reset "$@" to the residuals
  process_args "$@"
  set -- "${residual_args[@]}"
  argumentCount=$#

  #check for jline terminal fixes on cygwin
  if is_cygwin; then
    stty -icanon min 1 -echo > /dev/null 2>&1
    addJava "-Djline.terminal=jline.UnixTerminal"
    addJava "-Dsbt.cygwin=true"
  fi
  
  # check java version
  if [[ ! $no_version_check ]]; then
    java_version_check
  fi

  # Now we check to see if there are any java opts on the environemnt. These get listed first, with the script able to override them.
  if [[ "$JAVA_OPTS" != "" ]]; then
    java_opts="${JAVA_OPTS}"
  fi

  # run sbt
  execRunner "$java_cmd" \
    $(get_mem_opts $app_mem) \
    ${java_opts[@]} \
    "${java_args[@]}" \
    -cp "$(fix_classpath "$app_classpath")" \
    $app_mainclass \
    "${app_commands[@]}" \
    "${residual_args[@]}"
    
  local exit_code=$?
  if is_cygwin; then
    stty icanon echo > /dev/null 2>&1
  fi
  exit $exit_code
}

# Loads a configuration file full of default command line options for this script.
loadConfigFile() {
  cat "$1" | sed '/^\#/d'
}

# Now check to see if it's a good enough version
# TODO - Check to see if we have a configured default java version, otherwise use 1.6
java_version_check() { 
  readonly java_version=$("$java_cmd" -version 2>&1 | awk -F '"' '/version/ {print $2}')
  if [[ "$java_version" == "" ]]; then
    echo
    echo No java installations was detected.
    echo Please go to http://www.java.com/getjava/ and download
    echo
    exit 1
  elif [[ ! "$java_version" > "1.6" ]]; then
    echo
    echo The java installation you have is not up to date
    echo $app_name requires at least version 1.6+, you have
    echo version $java_version
    echo
    echo Please go to http://www.java.com/getjava/ and download
    echo a valid Java Runtime and install before running $app_name.
    echo
    exit 1
  fi
}

###  ------------------------------- ###
###  Start of customized settings    ###
###  ------------------------------- ###
usage() {
 cat <<EOM
Usage: $script_name [options]

  -h | -help         print this message
  -v | -verbose      this runner is chattier
  -d | -debug        set sbt log level to debug
  -no-version-check  Don't run the java version check.
  -mem <integer>     set memory options in MB (default: $sbt_mem, which is $(get_mem_opts $sbt_mem))
  -jvm-debug <port>  Turn on JVM debugging, open at the given port.

  # java version (default: java from PATH, currently $(java -version 2>&1 | grep version))
  -java-home <path>         alternate JAVA_HOME

  # jvm options and output control
  JAVA_OPTS          environment variable, if unset uses "$java_opts"
  -Dkey=val          pass -Dkey=val directly to the java runtime
  -J-X               pass option -X directly to the java runtime
                     (-J is stripped)

  # special option
  --                 To stop parsing built-in commands from the rest of the command-line.
                     e.g.) enabling debug and sending -d as app argument
                     \$ ./start-script -d -- -d

In the case of duplicated or conflicting options, basically the order above
shows precedence: JAVA_OPTS lowest, command line options highest except "--".
EOM
}

###  ------------------------------- ###
###  Main script                     ###
###  ------------------------------- ###

declare -a residual_args
declare -a java_args
declare -a app_commands
declare -r real_script_path="$(realpath "$0")"
declare -r app_home="$(realpath "$(dirname "$real_script_path")")"
# TODO - Check whether this is ok in cygwin...
declare -r lib_dir="$(realpath "${app_home}/../lib")"
declare -r app_mainclass="play.core.server.NettyServer"

declare -r script_conf_file="/etc/default/yona"
declare -r app_classpath="$lib_dir/yona.yona-1.16.0.jar:$lib_dir/js-engine.jar:$lib_dir/org.scala-lang.scala-library-2.10.4.jar:$lib_dir/com.typesafe.play.twirl-api_2.10-1.0.3.jar:$lib_dir/org.apache.commons.commons-lang3-3.1.jar:$lib_dir/com.typesafe.play.play_2.10-2.3.10.jar:$lib_dir/com.typesafe.play.build-link-2.3.10.jar:$lib_dir/com.typesafe.play.play-exceptions-2.3.10.jar:$lib_dir/com.typesafe.play.play-iteratees_2.10-2.3.10.jar:$lib_dir/org.scala-stm.scala-stm_2.10-0.7.jar:$lib_dir/com.typesafe.config-1.2.1.jar:$lib_dir/com.typesafe.play.play-json_2.10-2.3.10.jar:$lib_dir/com.typesafe.play.play-functional_2.10-2.3.10.jar:$lib_dir/com.typesafe.play.play-datacommons_2.10-2.3.10.jar:$lib_dir/joda-time.joda-time-2.3.jar:$lib_dir/org.joda.joda-convert-1.6.jar:$lib_dir/com.fasterxml.jackson.core.jackson-annotations-2.3.2.jar:$lib_dir/com.fasterxml.jackson.core.jackson-core-2.3.2.jar:$lib_dir/com.fasterxml.jackson.core.jackson-databind-2.3.2.jar:$lib_dir/org.scala-lang.scala-reflect-2.10.4.jar:$lib_dir/io.netty.netty-3.9.9.Final.jar:$lib_dir/com.typesafe.netty.netty-http-pipelining-1.1.2.jar:$lib_dir/org.slf4j.slf4j-api-1.7.6.jar:$lib_dir/org.slf4j.jul-to-slf4j-1.7.6.jar:$lib_dir/org.slf4j.jcl-over-slf4j-1.7.6.jar:$lib_dir/ch.qos.logback.logback-core-1.1.1.jar:$lib_dir/ch.qos.logback.logback-classic-1.1.1.jar:$lib_dir/com.typesafe.akka.akka-actor_2.10-2.3.4.jar:$lib_dir/com.typesafe.akka.akka-slf4j_2.10-2.3.4.jar:$lib_dir/commons-codec.commons-codec-1.9.jar:$lib_dir/xerces.xercesImpl-2.11.0.jar:$lib_dir/xml-apis.xml-apis-1.4.01.jar:$lib_dir/javax.transaction.jta-1.1.jar:$lib_dir/com.typesafe.play.play-java_2.10-2.3.10.jar:$lib_dir/org.yaml.snakeyaml-1.13.jar:$lib_dir/org.hibernate.hibernate-validator-5.0.3.Final.jar:$lib_dir/javax.validation.validation-api-1.1.0.Final.jar:$lib_dir/org.jboss.logging.jboss-logging-3.2.0.Final.jar:$lib_dir/com.fasterxml.classmate-1.0.0.jar:$lib_dir/org.springframework.spring-context-4.0.3.RELEASE.jar:$lib_dir/org.javassist.javassist-3.19.0-GA.jar:$lib_dir/org.reflections.reflections-0.9.8.jar:$lib_dir/dom4j.dom4j-1.6.1.jar:$lib_dir/org.apache.tomcat.tomcat-servlet-api-8.0.5.jar:$lib_dir/com.typesafe.play.play-java-jdbc_2.10-2.3.10.jar:$lib_dir/com.typesafe.play.play-jdbc_2.10-2.3.10.jar:$lib_dir/com.jolbox.bonecp-0.8.0.RELEASE.jar:$lib_dir/com.h2database.h2-1.3.176.jar:$lib_dir/tyrex.tyrex-1.0.1.jar:$lib_dir/com.typesafe.play.play-java-ebean_2.10-2.3.10.jar:$lib_dir/org.avaje.ebeanorm.avaje-ebeanorm-3.3.4.jar:$lib_dir/org.avaje.ebeanorm.avaje-ebeanorm-agent-3.2.2.jar:$lib_dir/org.hibernate.javax.persistence.hibernate-jpa-2.0-api-1.0.1.Final.jar:$lib_dir/com.typesafe.play.play-java-ws_2.10-2.3.10.jar:$lib_dir/com.typesafe.play.play-ws_2.10-2.3.10.jar:$lib_dir/com.ning.async-http-client-1.8.15.jar:$lib_dir/oauth.signpost.signpost-core-1.2.1.2.jar:$lib_dir/oauth.signpost.signpost-commonshttp4-1.2.1.2.jar:$lib_dir/com.typesafe.play.play-cache_2.10-2.3.10.jar:$lib_dir/net.sf.ehcache.ehcache-core-2.6.8.jar:$lib_dir/com.feth.play-authenticate_2.10-0.6.9.jar:$lib_dir/com.feth.play-easymail_2.10-0.6.7.jar:$lib_dir/com.typesafe.play.plugins.play-plugins-mailer_2.10-2.3.1.jar:$lib_dir/org.apache.commons.commons-email-1.3.3.jar:$lib_dir/javax.mail.mail-1.4.5.jar:$lib_dir/javax.activation.activation-1.1.1.jar:$lib_dir/com.typesafe.play.plugins.play-plugins-util_2.10-2.3.0.jar:$lib_dir/org.mindrot.jbcrypt-0.3m.jar:$lib_dir/commons-lang.commons-lang-2.6.jar:$lib_dir/com.googlecode.owasp-java-html-sanitizer.owasp-java-html-sanitizer-20190610.1.jar:$lib_dir/com.google.guava.guava-27.1-jre.jar:$lib_dir/com.google.guava.failureaccess-1.0.1.jar:$lib_dir/com.google.guava.listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:$lib_dir/com.google.code.findbugs.jsr305-3.0.2.jar:$lib_dir/org.checkerframework.checker-qual-2.5.2.jar:$lib_dir/com.google.errorprone.error_prone_annotations-2.2.0.jar:$lib_dir/com.google.j2objc.j2objc-annotations-1.1.jar:$lib_dir/org.codehaus.mojo.animal-sniffer-annotations-1.17.jar:$lib_dir/org.mariadb.jdbc.mariadb-java-client-1.5.5.jar:$lib_dir/org.eclipse.jgit.org.eclipse.jgit-4.5.0.201609210915-r.jar:$lib_dir/com.jcraft.jsch-0.1.53.jar:$lib_dir/com.googlecode.javaewah.JavaEWAH-0.7.9.jar:$lib_dir/org.apache.httpcomponents.httpclient-4.3.6.jar:$lib_dir/org.apache.httpcomponents.httpcore-4.3.3.jar:$lib_dir/org.eclipse.jgit.org.eclipse.jgit.http.server-4.5.0.201609210915-r.jar:$lib_dir/org.eclipse.jgit.org.eclipse.jgit.lfs-4.5.0.201609210915-r.jar:$lib_dir/org.eclipse.jgit.org.eclipse.jgit.archive-4.5.0.201609210915-r.jar:$lib_dir/org.apache.commons.commons-compress-1.6.jar:$lib_dir/org.tukaani.xz-1.4.jar:$lib_dir/org.osgi.org.osgi.core-4.3.1.jar:$lib_dir/org.tmatesoft.svnkit.svnkit-1.9.3.jar:$lib_dir/de.regnis.q.sequence.sequence-library-1.0.3.jar:$lib_dir/org.tmatesoft.sqljet.sqljet-1.1.11.jar:$lib_dir/org.antlr.antlr-runtime-3.4.jar:$lib_dir/net.java.dev.jna.jna-4.1.0.jar:$lib_dir/net.java.dev.jna.jna-platform-4.1.0.jar:$lib_dir/com.trilead.trilead-ssh2-1.0.0-build221.jar:$lib_dir/com.jcraft.jsch.agentproxy.connector-factory-0.0.7.jar:$lib_dir/com.jcraft.jsch.agentproxy.core-0.0.7.jar:$lib_dir/com.jcraft.jsch.agentproxy.usocket-jna-0.0.7.jar:$lib_dir/net.java.dev.jna.platform-3.4.0.jar:$lib_dir/com.jcraft.jsch.agentproxy.usocket-nc-0.0.7.jar:$lib_dir/com.jcraft.jsch.agentproxy.sshagent-0.0.7.jar:$lib_dir/com.jcraft.jsch.agentproxy.pageant-0.0.7.jar:$lib_dir/com.jcraft.jsch.agentproxy.svnkit-trilead-ssh2-0.0.7.jar:$lib_dir/sonia.svnkit.svnkit-dav-1.8.15-scm1.jar:$lib_dir/sonia.svnkit.svnkit-1.8.15-scm1.jar:$lib_dir/javax.servlet.servlet-api-2.5.jar:$lib_dir/net.sourceforge.jexcelapi.jxl-2.6.10.jar:$lib_dir/log4j.log4j-1.2.14.jar:$lib_dir/org.apache.shiro.shiro-core-1.2.1.jar:$lib_dir/commons-beanutils.commons-beanutils-1.8.3.jar:$lib_dir/info.schleichardt.play-2-mailplugin_2.10-0.9.1.jar:$lib_dir/org.apache.tika.tika-core-1.2.jar:$lib_dir/commons-io.commons-io-2.4.jar:$lib_dir/org.julienrf.play-jsmessages_2.10-1.6.2.jar:$lib_dir/commons-collections.commons-collections-3.2.1.jar:$lib_dir/org.jsoup.jsoup-1.8.3.jar:$lib_dir/com.googlecode.juniversalchardet.juniversalchardet-1.0.3.jar:$lib_dir/com.github.zafarkhaja.java-semver-0.7.2.jar:$lib_dir/com.googlecode.htmlcompressor.htmlcompressor-1.4.jar:$lib_dir/org.springframework.spring-jdbc-4.1.5.RELEASE.jar:$lib_dir/org.springframework.spring-beans-4.1.5.RELEASE.jar:$lib_dir/org.springframework.spring-core-4.1.5.RELEASE.jar:$lib_dir/commons-logging.commons-logging-1.2.jar:$lib_dir/org.springframework.spring-tx-4.1.5.RELEASE.jar:$lib_dir/javax.xml.bind.jaxb-api-2.3.0.jar:$lib_dir/com.github.mfornos.humanize-slim-1.2.2.jar:$lib_dir/org.ocpsoft.prettytime.prettytime-3.2.5.Final.jar:$lib_dir/me.xuender.unidecode-0.0.7.jar:$lib_dir/yona.yona-1.16.0-assets.jar"

addJava "-Duser.dir=$(cd "${app_home}/.."; pwd -P)"

# Added by build.sbt
[ -n "$YONA_HOME" ] && addJava "-Duser.dir=$YONA_HOME"
[ -z "$YONA_HOME" ] && YONA_HOME=$(cd "$(realpath "$(dirname "$(realpath "$0")")")/.."; pwd -P)
addJava "-Dyobi.home=$YONA_HOME"

[ -z "$YONA_DATA" ] && YONA_DATA=$(cd "$(realpath "$(dirname "$(realpath "$0")")")/.."; pwd -P)
addJava "-Dyona.data=$YONA_DATA"
addJava "-Dapplication.home=$YONA_DATA"

yobi_config_file="$YONA_DATA"/conf/application.conf
yobi_log_config_file="$YONA_DATA"/conf/application-logger.xml
[ -f "$yobi_config_file" ] && addJava "-Dconfig.file=$yobi_config_file"
[ -f "$yobi_log_config_file" ] && addJava "-Dlogger.file=$yobi_log_config_file"

addJava "-DapplyEvolutions.default=true"

# java_cmd is overrode in process_args when -java-home is used
declare java_cmd=$(get_java_cmd)

# if configuration files exist, prepend their contents to $@ so it can be processed by this runner
[[ -f "$script_conf_file" ]] && set -- $(loadConfigFile "$script_conf_file") "$@"

run "$@"