From bbb1f8a72872e63e99dd0563811060d639381ce0 Mon Sep 17 00:00:00 2001
From: Alex Epstein <epsteina@wit.edu>
Date: Thu, 3 Aug 2017 01:43:20 -0400
Subject: [PATCH] Adding transfer

---
 transfer/transfer | 173 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100755 transfer/transfer

diff --git a/transfer/transfer b/transfer/transfer
new file mode 100755
index 0000000..182bc76
--- /dev/null
+++ b/transfer/transfer
@@ -0,0 +1,173 @@
+#!/usr/bin/env bash
+# Author: Alexander Epstein https://github.com/alexanderepstein
+configuredDownloadClient=""
+configuredUploadClient=""
+configuredClient=""
+currentVersion="1.17.3"
+single="false"
+down="false"
+
+## This function determines which http get tool the system has installed and returns an error if there isnt one
+getConfiguredDownloadClient()
+{
+  if  command -v curl &>/dev/null; then
+    configuredDownloadClient="curl"
+  elif command -v wget &>/dev/null; then
+    configuredDownloadClient="wget"
+  elif command -v fetch &>/dev/null; then
+    configuredDownloadClient="fetch"
+  else
+    echo "Error: Downloading with this tool reqires either curl, wget, or fetch to be installed." >&2
+    return 1
+  fi
+}
+
+## Allows to call the users configured client without if statements everywhere
+httpGet()
+{
+  case "$configuredClient" in
+    curl)  curl -A curl -s "$@" ;;
+    wget)  wget -qO- "$@" ;;
+    httpie) http -b GET "$@" ;;
+    fetch) fetch -q "$@" ;;
+  esac
+}
+
+## This function determines which http get tool the system has installed and returns an error if there isnt one
+getConfiguredClient()
+{
+  if  command -v curl &>/dev/null; then
+    configuredClient="curl"
+  elif command -v wget &>/dev/null; then
+    configuredClient="wget"
+  elif command -v http &>/dev/null; then
+    configuredClient="httpie"
+  elif command -v fetch &>/dev/null; then
+    configuredClient="fetch"
+  else
+    echo "Error: This tool reqires either curl, wget, httpie or fetch to be installed." >&2
+    return 1
+  fi
+}
+
+## This function determines which http get tool the system has installed and returns an error if there isnt one
+getconfiguredUploadClient()
+{
+  if  command -v curl &>/dev/null; then
+    configuredUploadClient="curl"
+  elif command -v wget &>/dev/null; then
+    configuredUploadClient="wget"
+  else
+    echo "Error: Uploading with this tool reqires either curl or wget to be installed." >&2
+    return 1
+  fi
+}
+## Allows to call the users configured client without if statements everywhere
+httpDownload()
+{
+
+  case "$configuredDownloadClient" in
+    curl)  curl -A curl --progress -o "$tempOutputPath/$3" "https://transfer.sh/$2/$3" || { echo "Failure!"; return 1;};;
+    wget)  wget --progress=dot -O "$tempOutputPath/$3" "https://transfer.sh/$2/$3" || { echo "Failure!"; return 1;} ;;
+    fetch) fetch -q -o "$tempOutputPath/$3" "https://transfer.sh/$2/$3" || { echo "Failure!"; return 1;};;
+  esac
+}
+
+checkInternet()
+{
+  httpGet github.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query github with a get request
+}
+
+singleDownload()
+{
+  if [[ ! -d $1 && $1 != "" ]];then { echo "Error: invalid output directory"; exit 1;};fi
+  if [[ $1 == "" ]];then tempOutputPath=$(pwd)
+  else tempOutputPath=$1;fi
+  if [ -f "$tempOutputPath/$3" ];then
+    echo -n "File aleady exists at $tempOutputPath/$3, do you want to delete it? [Y/n] "
+    read -r answer
+    if [[ "$answer" == [Yy] ]] ;then
+      rm -f $tempOutputPath/$3
+    else
+      echo "Stopping download"
+      return 1
+    fi
+  fi
+  echo "Downloading $3"
+  httpDownload "$tempOutputPath" "$2" "$3"
+  echo "Success!"
+}
+
+httpSingleUpload()
+{
+  case "$configuredUploadClient" in
+    curl) response=$(curl -A curl --progress --upload-file "$1" "https://transfer.sh/$2") || { echo "Failure!"; return 1;};;
+    wget) response=$(wget --progress=dot --method PUT --body-file="$1" "https://transfer.sh/$2") || { echo "Failure!"; return 1;} ;;
+  esac
+  echo -e "Success!\nFile uploaded to: $response"
+}
+
+
+singleUpload()
+{
+  filePath=$(echo $1 | sed s:"~":$HOME:g)
+  if [ ! -f $filePath ];then { echo "Error: invalid file path"; return 1;}; fi
+  tempFileName=$(echo $1 | sed "s/.*\///")
+  tempFilePath=$(echo $1 | sed s:"~":$HOME:g)
+  echo "Uploading $tempFileName"
+  httpSingleUpload "$tempFilePath" "$tempFileName"
+}
+
+while getopts "s:d:uvh" opt; do
+  case "$opt" in
+    \?) echo "Invalid option: -$OPTARG" >&2
+      exit 1
+    ;;
+    h)  usage
+      exit 0
+    ;;
+    v)  echo "Version $currentVersion"
+      exit 0
+    ;;
+    u)  update
+      exit 0
+    ;;
+    d)  down="true"
+      if [ $# -lt 4 ];then { echo "Error: not enough arguments for downloading a file, see the usage"; return 1;};fi
+      inputFilePath=$(echo "$*" | sed s/-d//g | cut -d " " -f 2)
+      inputID=$(echo "$*" | sed s/-d//g | cut -d " " -f 3)
+      inputFileName=$(echo "$*" | sed s/-d//g | cut -d " " -f 4)
+    ;;
+    s)  single="true"
+      inputFilePath=$(echo "$@" | sed s/-s//g)
+    ;;
+    :)  echo "Option -$OPTARG requires an argument." >&2
+      exit 1
+    ;;
+  esac
+done
+
+if $down && $single;then { echo "Error: upload and download are mutually exclusive";exit 1;};fi
+
+if [[ $# == "0" ]]; then
+  usage
+  exit 0
+elif [[ $1 == "help" ]]; then
+  usage
+  exit 0
+elif [[ $1 == "update" ]]; then
+  update
+  exit 0
+elif $single ;then
+  getConfiguredClient || exit 1
+  checkInternet || exit 1
+  getconfiguredUploadClient || exit 1
+  singleUpload "$inputFilePath" || exit 1
+  exit 0
+elif $down;then
+  getConfiguredClient || exit 1
+  checkInternet || exit 1
+  getConfiguredDownloadClient || exit 1
+  singleDownload "$inputFilePath" "$inputID" "$inputFileName" || exit 1
+  exit 0
+fi