#!/bin/bash
set -e

############################################################
# Help                                                     #
############################################################
help()
{
   # Display Help
   echo "Send files or text via PairDrop via commandline."
   echo
   echo -e "To send files:\t$(basename "$0") file"
   echo -e "To send text:\t$(basename "$0") -t \"text\""
}

openPairDrop()
{
  # openPairDrop
  url=$domain
  if [[ -n $params ]];then
    url=$url"?"$params
  fi
  if [[ -n $hash ]];then
    url=$url"#"$hash
  fi
  echo "PairDrop is opening in a browser."

  if [[ $OS == "Windows" ]];then
    start "$url"
  elif [[ $OS == "Mac" ]];then
    open "$url"
  else
    xdg-open "$url"
  fi
  exit
}

setOs()
{
  unameOut=$(uname -a)
  case "${unameOut}" in
      *Microsoft*)     OS="WSL";; #must be first since Windows subsystem for linux will have Linux in the name too
      *microsoft*)     OS="WSL2";; #WARNING: My v2 uses ubuntu 20.4 at the moment slightly different name may not always work
      Linux*)     OS="Linux";;
      Darwin*)    OS="Mac";;
      CYGWIN*)    OS="Cygwin";;
      MINGW*)     OS="Windows";;
      *Msys)     OS="Windows";;
      *)          OS="UNKNOWN:${unameOut}"
  esac
}

############################################################
############################################################
# Main program                                             #
############################################################
############################################################
domain="https://pairdrop.net/"
domain="https://192.168.2.90:8443/"
setOs
############################################################
# Process the input options. Add options as needed.        #
############################################################
# Get the options
# open PairDrop if no options are given
[[ $# -eq 0 ]] && openPairDrop && exit
#  display help and exit if first argument is "--help" or more than 2 arguments are given
[ "$1" = "--help" ] | [[ $# -gt 2 ]] && help && exit

while getopts "ht:*" option; do
    case $option in
      t) # Send text
        params="base64text=hash"
        hash=$(echo -n "${OPTARG}" | base64)

        if [[ $(echo -n "$hash" | wc -m) -gt 32600 ]];then
          params="base64text=paste"
          if [[ $OS == "Windows" || $OS == "WSL" || $OS == "WSL2" ]];then
            echo -n $hash | clip.exe
          elif [[ $OS == "Mac" ]];then
            echo -n $hash | pbcopy
          else
              (echo -n $hash | xclip) || echo "You need to install xclip for sending bigger files from cli"
          fi
          hash=
        fi

        openPairDrop

        exit;;
      h | ?) # display help and exit
        help
        exit;;
      esac
done

# Send file(s)
# display help and exit if 2 arguments are given or if file does not exist
[[ $# -eq 2 ]] || [[ ! -a $1 ]] && help && exit
params="base64zip=hash"
if [[ -d $1 ]]; then
  zipPath="${1::-1}_pairdrop_temp.zip"
  [[ -a "$zipPath" ]] && echo "Cannot overwrite $zipPath. Please remove first." && exit
  zip -r -q -b /tmp/ "$zipPath" "$1"
  hash=$(zip -q -b /tmp/ - "$zipPath" | base64 -w 0)
  rm "$zipPath"
else
  hash=$(zip -q -b /tmp/ - "$1" | base64 -w 0)
fi

if [[ $(echo -n "$hash" | wc -m) -gt 32600 ]];then
  params="base64zip=paste"
  if [[ $OS == "Windows" || $OS == "WSL" || $OS == "WSL2" ]];then
    echo -n $hash | clip.exe
  elif [[ $OS == "Mac" ]];then
    echo -n $hash | pbcopy
  else
    (echo -n $hash | xclip) || echo "You need to install xclip for sending bigger files from cli"
  fi
  hash=
fi

openPairDrop