# set to 0 to disable.
#
# If set to 1 (or currently any non-zero value), mylyx will read the file and
# open with the appropriate LyX version. If the format is less than the master
# format, we don't open with master because we want to know when the file
# format changes (and when to review lyx2lyx diff).
_mylyx_veropen_=1
# TODO: create and use a variable _mylyx_dir_
# _mylyx_dir_="~/lyxbuilds/"


function _validate_requested_mylyx ()
{
  potential_dir="/home/${USER}/lyxbuilds/${requested_build}"
  if [ ! -d "${potential_dir}" ]; then
    echo "ERROR: the requested mylyx build does not exist: ${potential_dir}" >&2
    return 1
  fi

  return 0
}



function mylyx ()
{
  if [ "${_mylyx_veropen_}" = "0" ]; then
    requested_build="$1"
    _validate_requested_mylyx "$1" || return 1
    shift
  else
    if [ -f "$1" ]; then
      # TODO: need to fix tab expansion.
      # we assume user wants the default build
      lyxformat="$( head -n2 "$1" | grep -o -P "\d\d\d" )"
      echo "lyxformat is: ${lyxformat}"
      if [ "${lyxformat}" = "544" ]; then
        requested_build="2.3.x"
      elif [ "${lyxformat}" = "474" ]; then
        requested_build="2.1.0"
      elif [ "${lyxformat}" = "620" ]; then
        requested_build="2.4.x"
      else
        # now we see what format my current master build is in
        master_frmt="$( grep "LYX_FORMAT_LYX" ~/lyxbuilds/master/repo/src/version.h | grep -P -o "\d\d\d" )"
        if [ "${lyxformat}" = "${master_frmt}" ]; then
          requested_build="master"
        else
          echo "No build associated with LyX format ${lyxformat}." >&2
          return 1
        fi
      fi
      echo "Auto-selecting ${requested_build}"
    else
      requested_build="$1"
      shift
    fi

    _validate_requested_mylyx "${requested_build}" || return 1
  fi

  if [ -e ~/lyxbuilds/$requested_build/repo/src/lyx ]; then
    echo "starting local autotools binary"
    # This assumes we're using --qt-build-dir when building. Otherwise,
    # mismatch could happen.
    # not sure why need to set LD_LIBRARY_PATH for autotools and not for CMake
    # how does CMake find it?
    LD_LIBRARY_PATH='/usr/BUILD/BuildQt5-dev/qtbase/lib' ~/lyxbuilds/$requested_build/repo/src/lyx -userdir ~/lyxbuilds/$requested_build/user-dir/ "$@"
  else
    # the regex "^lyx(\d\.\d)?" allows for both lyx2.3 and lyx. Depends on what the user sets for -DLYX_PROGRAM_SUFFIX
    LYX_VER="$( ls ~/lyxbuilds/$requested_build/CMakeBuild/bin/ | grep -oP "^lyx(\d\.\d)?$" )"
    if [ -e ~/lyxbuilds/$requested_build/CMakeBuild/bin/${LYX_VER} ]; then
      echo "starting local cmake binary for ${LYX_VER}"
      # Adding the build's bin dir to PATH makes it so e.g., the local build's
      # tex2lyx is used, rather than a system-installed tex2lyx.
      PATH="/home/${USER}/lyxbuilds/${requested_build}/CMakeBuild/bin:${PATH}" ~/lyxbuilds/$requested_build/CMakeBuild/bin/${LYX_VER} -userdir ~/lyxbuilds/$requested_build/user-dir/ "$@"
    else
      echo "ERROR: no autotools or cmake binary available" >&2
    fi
  fi
}


_mylyx()
{
  local cur

  cur=${COMP_WORDS[COMP_CWORD]}

  if [ "$COMP_CWORD" == "1" ]; then
    COMPREPLY=( $( compgen -W '`ls ~/lyxbuilds`' -- $cur ) )

    if [ "${_mylyx_veropen_}" != "0" ]; then
      # need to protect against an empty directory, otherwise get the following
      # error:
      #   mylyx find: ‘*’: No such file or directory
      if [ "$(ls -A .)" ]; then
        # for find command:
        #   https://stackoverflow.com/a/2596474/1376404
        # for case insenstivity, replace ${cur} with ${cur,,}:
        #   (this messed something else up so I changed back.
        #   https://unix.stackexchange.com/a/128390/197212
        #   This one is also useful:
        #   https://stackoverflow.com/a/10981916/1376404
        COMPREPLY+=( $( compgen -W '`find * -maxdepth 0 -type f -name "*.lyx"`' -- "${cur}" ) )
      fi
    fi
  else
    _filedir '@(lyx)'
  fi
}
complete -F _mylyx ${filenames:-} mylyx


function mylyxcd ()
{
  requested_build="$1"
  _validate_requested_mylyx "$1" || return 1

  # TODO could allow for 'repo' to be named anything. Just check for a git folder.

  cd ~/lyxbuilds/$requested_build/repo
}


_mylyxcd()
{
  local cur

  cur=${COMP_WORDS[COMP_CWORD]}

  if [ "$COMP_CWORD" == "1" ]; then
    COMPREPLY=( $( compgen -W '`ls ~/lyxbuilds`' -- $cur ) )
  fi
}
complete -F _mylyxcd ${filenames:-} mylyxcd


function mylyx-gdb ()
{
  # (https://stackoverflow.com/questions/9057387/process-all-arguments-except-the-first-one-in-a-bash-script)
  # the "${@:2}" relays all arguments except the first.
  requested_build="$1"
  _validate_requested_mylyx "$1" || return 1
  PATH="/home/${USER}/lyxbuilds/${requested_build}/CMakeBuild/bin:${PATH}" gdb --args ~/"lyxbuilds/${requested_build}/CMakeBuild/bin/lyx" -userdir ~/"lyxbuilds/${requested_build}/user-dir" "${@:2}"
}
complete -F _mylyxcd ${filenames:-} mylyx-gdb


function mylyx-valgrind ()
{
  # (https://stackoverflow.com/questions/9057387/process-all-arguments-except-the-first-one-in-a-bash-script)
  # the "${@:2}" relays all arguments except the first.
  requested_build="$1"
  _validate_requested_mylyx "$1" || return 1
  PATH="/home/${USER}/lyxbuilds/${requested_build}/CMakeBuild/bin:${PATH}" valgrind --track-origins=yes --log-file=valgrind.log ~/lyxbuilds/${requested_build}/CMakeBuild/bin/lyx -userdir ~/"lyxbuilds/${requested_build}/user-dir" "${@:2}"
}
complete -F _mylyxcd ${filenames:-} mylyx-valgrind


function mylyx-valgrind-leak-check-full ()
{
  # (https://stackoverflow.com/questions/9057387/process-all-arguments-except-the-first-one-in-a-bash-script)
  # the "${@:2}" relays all arguments except the first.
  requested_build="$1"
  _validate_requested_mylyx "$1" || return 1
  PATH="/home/${USER}/lyxbuilds/${requested_build}/CMakeBuild/bin:${PATH}" valgrind --track-origins=yes --log-file=valgrind.log --leak-check=full ~/lyxbuilds/${requested_build}/CMakeBuild/bin/lyx -userdir ~/"lyxbuilds/${requested_build}/user-dir" "${@:2}"
}
complete -F _mylyxcd ${filenames:-} mylyx-valgrind-leak-check-full