git

#!/bin/bash

DEBUG=0

: git_bridge_wsl2_and_windows
: :
: Currently on NTFS, WSL2\'s git is too heavy.
: This is a workaround for that.
: :
: Recommend: ln -s git_bridge_wsl2_and_windows ~/bin/git

sub_cmd=$1

function main () {
  if [[ $(is_needing_auth) = true ]] ; then
    git_wsl2 "$@"
  elif [[ $(should_use_windows_git) = true ]] ; then
    git_windows "$@"
  else
    # By default
    git_wsl2 "$@"
  fi
}

function git_wsl2 () {
  echo_debug 'Using WSL2 git'
  echo_debug "is_needing_auth: $(is_needing_auth)"
  echo_debug "should_use_windows_git: $(should_use_windows_git)"
  echo_debug "/usr/bin/git $*"
  /usr/bin/git "$@"
}

function git_windows () {
  local args=()

  echo_debug 'Using Windows git'
  echo_debug "is_needing_auth: $(is_needing_auth)"
  echo_debug "should_use_windows_git: $(should_use_windows_git)"
  echo_debug "git.exe $*"

  for x in "$@"; do
    if [[ $x =~ ^/ ]] ; then
      # TODO: Remove this disabling
      # shellcheck disable=SC2207
      args+=($(wslpath -w "$x" | sed -r 's/\\/\\\\/g' ))
      continue
    fi

    args+=("$x")
  done

  eval "git.exe ${args[*]}"
}

function should_use_windows_git () {
  if \
    [[ $PWD =~ ^/mnt ]] \
    || [[ $PWD =~ ^/home/$USER/Windows ]] \
    || [[ $PWD =~ ^/home/$USER/Desktop ]] ; \
  then
    echo true
  else
    echo false
  fi
}

function is_needing_auth () {
  local command_needs_auth=(push pull fetch) cmd

  for cmd in "${command_needs_auth[@]}" ; do
    if [[ $sub_cmd = "$cmd" ]] ; then
      echo true
      return
    fi
  done

  echo false
}

function echo_debug () {
  if [[ $DEBUG -eq 1 ]] ; then
    echo "git_bridge_wsl2_and_windows: $*"
  fi
}

main "$@"