#!/usr/bin/env python
#
# check_books.py - v0.1
#
# Copyright (c) 2007 - Rich Burridge - Sun Microsystems Inc.
# All Rights Reserved.
#
# Script to check my Amazon wish list to see if any of the books are
# now available at my local library. If they are, then an email is
# automatically sent to me containing the URL's of those books in the
# libraries online web catalog.
#
# Uses the pyAmazon Amazon Web Service API wrapper maintained by 
# Michael Josephson.
# [http://www.josephson.org/projects/pyamazon/]
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.

import amazon
import smtplib
import sys
import urllib2

# ------ START OF CONFIGURABLE SECTION ----

# Amazon Access License Key.
#
amazonAccessKey = "XXXXXXXXXXXXXXXXXXXX"

# Amazon Wishlist ID.
#
amazonWishListID = "YYYYYYYYYYYYY"

# Email address to sent results to.
#
emailAddr = "somebody@somewhere.com"

#  Url to access my local library system. The book ISBN is appended to it.
#
libraryURL = "http://146.74.92.11/ipac20/ipac.jsp?index=ISBNEX&term="

# ------ END OF CONFIGURABLE SECTION ------

# Maximum number of results returned per page.
#
MAX_RESULTS = 10

# List of books found at the library.
#
foundBooks = []

# Email message template.
#
messageTemplate = """\
From: %s
To: %s
Subject: %s

%s  
"""

def sendEmail(foundBooks):
    SERVER = "localhost"
    FROM = emailAddr
    TO = [ emailAddr]
    SUBJECT = "New Books at Library."

    TEXT = ""
    for book in foundBooks:
        TEXT += "Url: %s%s\n" % (libraryURL, str(book.Asin))
        TEXT += "ISBN: %s\n" % str(book.Asin)

        TEXT += "Title: %s\n" % (''.join([ x[0] for x in book.ProductName ]))
        TEXT += "Author(s): %s\n\n\n" % \
                             (''.join([ x[0] for x in book.Authors.Author ]))

    message = messageTemplate % (FROM, ", ".join(TO), SUBJECT, TEXT)
    server = smtplib.SMTP(SERVER)
    server.sendmail(FROM, TO, message)
    server.quit()

def checkLibrary(book):
    url = libraryURL + str(book.Asin)
    bookInfo = urllib2.urlopen(url)
    contents = bookInfo.read()
    if contents.find("Sorry, could not find anything matching") == -1:
        foundBooks.append(book)

def processResults(books):
    for book in books:
        checkLibrary(book)

def checkWishList(amazonWishListID):
    pageNo = 1
    finished = False
    while not finished:
        results = amazon.searchByWishlist(amazonWishListID, page=pageNo)
        if len(results) != 0:
            processResults(results)
        if len(results) == MAX_RESULTS:
            pageNo += 1
        else:
            finished = True
    if foundBooks:
        sendEmail(foundBooks)

if __name__ == "__main__":
    amazon.setLicense(amazonAccessKey)
    checkWishList(amazonWishListID)