#!/bin/bash

# Check the version of openssl.
if [[ `openssl version` < 'OpenSSL 0.9.8e' ]]; then
  echo "openssl is too old - must be version 0.9.8e or later."
  exit 1
fi

# Set our Access Key Id, and Secret Access Key.
readonly ACCESS_KEY_ID='xxxxxxxxxxxxxxxxxxxx'
readonly SECRET_ACCESS_KEY='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

# Uploads a single file to PDF Alchemy.
function uploadFile { # $1 => filename.
  echo -n "Uploading '$1': "
  DATE=`date --rfc-2822 --utc`
  UPLOAD_NAME=`basename "$1"`
  UPLOAD_NAME=`echo -n "$UPLOAD_NAME" | tr -c '\-0-9a-zA-Z\-._~' '_'`
  REQUEST="/$ACCESS_KEY_ID/inqueue/$UPLOAD_NAME"
  CLEARTEXT=`echo -e "PUT\n$ACCESS_KEY_ID\n$DATE\n$REQUEST"`
  SIGNATURE=`echo -n "$CLEARTEXT" | openssl dgst -sha1 -hmac "$SECRET_ACCESS_KEY" -binary | openssl base64`
  curl -H "Date: $DATE" -H "X-PDF-Alchemy-Signature: $SIGNATURE" -T "$1" "http://www.pdfalchemy.com$REQUEST"
  echo
}

# Uploads all convertable files from a single directory, to PDF Alchemy.
function uploadFilesInDir { # $1 => dirname.
  ls -1 "$1" | grep '\.\(doc\|docx\|rtf\|txt\)$' | xargs -I{} "$0" "$1/{}"
}

# Check that we have been called with one argument.
if [ "$#" -ne 1 ]; then
  echo "Usage: `basename $0` filename|dirname"
  exit 1
fi

# Upload the directory / file.
if [ -d "$1" ]; then
  uploadFilesInDir "$1"
else
  uploadFile "$1"
fi