#!/usr/bin/env bash

# Startup script for GMT.app in macOS.
# Setup environment and start Terminal.

if [ "$1" = "GMT_PROMPT" ]; then
  _rundir=$(dirname "$0")
  cd "${_rundir}/.."
  export BUNDLE_RESOURCES="${PWD}/Resources"
  cd "${OLDPWD}"
  # Getting and setting terminal width so wide enough to not wrap the gmt splash screen
  dim=($(osascript -e 'tell application "Terminal" to get size of front window' | tr ',' ' '))
  w=$(echo "${dim[0]} 1.25" | awk '{print int($1*$2)}')
  osascript << EOF
tell application "Terminal" to set size of front window to {$w, ${dim[1]}}
EOF
  export PATH="${BUNDLE_RESOURCES}/@GMT_BINDIR@:${PATH}"
  export PROJ_LIB="${BUNDLE_RESOURCES}/share/proj"
  export MAGICK_CONFIGURE_PATH=${BUNDLE_RESOURCES}/lib/GraphicsMagick/config

  function gmt () { "${BUNDLE_RESOURCES}/@GMT_BINDIR@/gmt" "$@"; }
  export -f gmt
  unset DYLD_LIBRARY_PATH
  gmt
  echo -e "Note 1: If you want to use GMT outside of this terminal or in scripts, then follow these steps:\n        a) export GMTHOME=${BUNDLE_RESOURCES}\n        b) add \$GMTHOME/bin to your path\n        c) export PROJ_LIB=\$GMTHOME/share/proj\n        d) export MAGICK_CONFIGURE_PATH=\$GMTHOME/lib/GraphicsMagick/config"
  echo -e "Note 2: GMT may use Ghostscript, GraphicsMagick, FFmpeg, and GDAL executables; see\n        ${BUNDLE_RESOURCES}/share/Licenses for details.\n"

  _usershell=$(dscl . -read "/Users/$USER" UserShell)
  _usershell=${_usershell##* }
  if [ ${_usershell} = ${_usershell%bash} ]; then
    # not using bash as default shell
    echo -e "Warning: your default shell is ${_usershell}. GMT commands completions are only available in BASH.\n"
    exec ${_usershell}
  fi
  # bash: start interactive shell and source gmt completions
  _temp_bashrc=$(mktemp -t temp_bashrc)
  cat << EOF > "${_temp_bashrc}"
    rm -- "${_temp_bashrc}"
    test -f ~/.bashrc && source ~/.bashrc
    source "${BUNDLE_RESOURCES}/share/tools/gmt_completion.bash"
    unset DYLD_LIBRARY_PATH
    # Assist modern mode scripts by setting a unique session name
    export GMT_SESSION_NAME=$$
EOF
  exec /bin/bash --rcfile "${_temp_bashrc}" -i
fi

# run terminal, set path, and run gmt
# http://hintsforums.macworld.com/showthread.php?t=68252
osascript << EOF
tell application "System Events"
  if (count (processes whose bundle identifier is "com.apple.Terminal")) is 0 then
    tell application "Terminal"
      do script with command "/bin/bash \"${BASH_SOURCE[0]}\" GMT_PROMPT" in window 0
    end tell
  else
    tell application "Terminal"
      do script with command "/bin/bash \"${BASH_SOURCE[0]}\" GMT_PROMPT"
    end tell
  end if
  tell application "Terminal"
    activate
  end tell
end tell
EOF

exit 0