Upload eBooks as attachments to CouchDB

upload.sh

#!/usr/bin/env bash

# usage: ./upload.sh http[s]://user:pass@host:port/database directories...

# This script creates a new document for each directory and then uploads the
# contents of each directory as attachments to said document.

# The script was made for uploading eBooks to my CouchDB so that I can retrieve
# them no matter where I am or what device I am on, but it can easily be
# adapted to other content as well.

# I keep my ebooks organized the following way in the directory I am u/l from:
#
# ebooks/
# ISBN/
#   book/
#     name_of_book.ext
#     [...]
#   cover/
#     thumb.gif
#     cover.gif
#     large.jpg

# I opted to keep this structure when uploading to CouchDB even though it
# means that there won't really be directories - CouchDB stores the files
# with slashes replaced by %2F, and when you download it to the browser,
# the files will most likely be named directory_filename.ext.

# Btw, if you're wondering - I have purchased these eBooks from
# publishers who provide them in DRM-free formats (O'Reilly, Leanpub,
# The Pragmatic Bookshelf), and the CouchDB they are uploaded to is only
# accessible by me. They are there for my own use and will never be
# "shared".

#STARTDIR=$(pwd)
COUCHDB=$1
PUBLISHER=$2

curl $COUCHDB

if [ $? -eq 0 ] ; then
  for currbook in ${@:3} ; do
    echo "Current book is $currbook" 1>&2

    UUID=$(uuidgen | sed 's/-//g')
    echo "Using UUID $UUID" 1>&2

    DEST="$COUCHDB/$UUID"

    DOCCREATE=$(curl -X PUT $DEST -d \
      "{
        \"type\":
        [
          \"digital assets\",
          \"ebooks\"
        ],
        \"isbn\":\"$currbook\",
        \"tags\":
        [
          \"pending\"
        ],
        \"publisher\":\"$PUBLISHER\"
      }")

    DOCCREATED=$( echo $DOCCREATE | grep '"ok":true' )

    if [ $? -eq 0 ] ; then
      find "$currbook" -type f \
        \(\
          -name "*.epub" \
          -o -name "*.mobi" \
          -o -name "*.pdf" \
          -o -name "*.zip" \
          -o -name "*.apk" \
          -o -name "*.jpg" \
          -o -name "*.gif" \
        \) -print0 | while IFS= read -r -d $'\0' file; do

        STOREAS=$( echo "$file" | sed -e "s,$currbook/\?,,g" -e "s, ,%20,g" )

        REV=$( curl $DEST | egrep -o '"_rev":"[^"]*"' | sed 's/"_rev":"\(.*\)"/\1/' )

        echo "Current document revision is at $REV" 1>&2
        echo "Next file is $file" 1>&2
        echo "Going to store as $STOREAS" 1>&2

        FILETYPE=$( echo "$file" | egrep -o "\.[^\.]*$" | cut -c2- )

        #MAYBE: Use `file' to check if file type is as expected?
        ERROR=0
        case $FILETYPE in
          "epub")
            MIMETYPE="application/epub+zip"
          ;;
          "mobi")
            MIMETYPE="application/x-mobipocket-ebook"
          ;;
          "pdf")
            MIMETYPE="application/pdf"
          ;;
          "zip")
            MIMETYPE="application/zip"
          ;;
          "apk")
            MIMETYPE="application/vnd.android.package-archive"
          ;;
          "jpg")
            MIMETYPE="image/jpeg"
          ;;
          "gif")
            MIMETYPE="image/gif"
          ;;
          *)
            echo "Unknown filetype :(" 1>&2
            ERROR=1
          ;;
        esac

        if [ $ERROR -eq 0 ] ; then
          curl -vX PUT "$DEST/$STOREAS?rev=$REV" --data-binary "@$file" \
            -H "Content-Type: $MIMETYPE"
        fi
      done
    else
      echo $DOCCREATE 1>&2
    fi
  done
else
  exit 1
fi