#!/usr/bin/env bash

ARG1=$1
DIR="$(dirname "$(readlink -f "$0")")"

# check to see if $1 is set and is not start of other cli set args
OPEN=""
if [ -n "${ARG1}" -a "${ARG1}" = "${ARG1#-}" -a "${ARG1}" != "open" ]; then
 # first argument exists and does not start with a "-" and is not "open"
 OPEN="-open"
fi

APPDIR="${DIR}"
JAVA="${APPDIR}/jre/bin/java"
GETDOWNTXT="${APPDIR}/getdown.txt"
CLASSPATH=""
if [ -e "${GETDOWNTXT}" ]; then
  for JAR in $(grep -e '^code\s*=\s*' "${GETDOWNTXT}" | sed -e 's/^code\s*=\s*//;'); do
    [ -n "${CLASSPATH}" ] && CLASSPATH="${CLASSPATH}:"
    CLASSPATH="${CLASSPATH}${APPDIR}/${JAR}"
  done
else
  echo "Cannot find getdown.txt" >&2
  exit 3
fi

if [ \! -e "${JAVA}" ]; then
  echo "Cannot find bundled java, using system and hoping for the best!" >&2
  JAVA=java
fi

declare -a ARGS=("${@}")

# change paths for Cygwin or Windows Subsystem for Linux (WSL)
if [ "$(uname -o)" = "Cygwin" ]; then
  echo "When using relative paths in args within Cygwin, please start with './' or '../'" >&2
  CLASSPATH=$(cygpath -pw "${CLASSPATH}")
  # now for some arg paths fun. only translating paths starting with './', '../' or '/'
  ARGS=()
  for ARG in "${@}"; do
    if [ "${ARG}" != "${ARG#./}" -o "${ARG}" != "${ARG#/}" -o "${ARG}" != "${ARG#../}" ]; then
      ARGS=( "${ARGS[@]}" "$(cygpath -aw "${ARG}")" )
    else
      ARGS=( "${ARGS[@]}" "${ARG}" )
    fi
  done
  JAVA="${JAVA}.exe"
elif uname -r | grep Microsoft >/dev/null; then
  echo "When using relative paths in args within WSL. please start with './' or '../'" >&2
  WCLASSPATH=""
  OLD_IFS="${IFS}"
  IFS=":"
  for JAR in $CLASSPATH; do
    [ -n "${WCLASSPATH}" ] && WCLASSPATH="${WCLASSPATH};"
    WCLASSPATH="${WCLASSPATH}$(wslpath -aw "${JAR}")"
  done
  CLASSPATH="${WCLASSPATH}"
  IFS="${OLD_IFS}"
  ARGS=()
  for ARG in "${@}"; do
    if [ "${ARG}" != "${ARG#./}" -o "${ARG}" != "${ARG#/}" -o "${ARG}" != "${ARG#../}" ]; then
      # annoyingly wslpath does not work if the file doesn't exist!
      ARGBASENAME="$(basename "${ARG}")"
      ARGDIRNAME="$(dirname "${ARG}")"
      ARGS=( "${ARGS[@]}" "$(wslpath -aw "${ARGDIRNAME}")\\${ARGBASENAME}" )
    else
      ARGS=( "${ARGS[@]}" "${ARG}" )
    fi
  done
  JAVA="${JAVA}.exe"
fi

# don't quote $OPEN
"${JAVA}" -cp "${CLASSPATH}" jalview.bin.Launcher ${OPEN} "${ARGS[@]}"