"""
   A python script to scrape the target.com mobile site, looking for iPad 2s.

   Author: PK Shiu
           pk @ pkshiu.com
           http://www.imperial-consulting.com
           
   Credits:
   - original list of links are from postings on macrumors.com

   This work is licensed under a 
   Creative Commons Attribution-NonCommercial 3.0 Unported License.
   http://creativecommons.org/licenses/by-nc/3.0/
"""
import urllib, urllib2
from BeautifulSoup import BeautifulSoup

# Change this to your zip
MY_ZIP='02118'

def parse(product_name, fd):
    """
    Use beautifulSoup to scrape the resulting HTML.
    """
    soup = BeautifulSoup(fd)

    # find ul class="itemList"
    ul = soup.find('ul', { 'class':'itemList'})
    # now extract just the li's, ignoring spaces etc.
    for li in ul.findAll('li'):
        href = li.a['href']
        store_name = li.strong.string.strip()
        print 'trying %s at %s...' % (product_name, store_name)
        if href.find('Out Of Stock') < 0:
            print 'GOT ONE !! copy and paste this link to see more details:'
            print 'http://sites.target.com/site/en/spot/%s' % href

    
def go(product_name, dcpi,zipcode=MY_ZIP):
    """
    Lookup one product
    """
    params = urllib.urlencode({
        '_dyncharset': 'ISO-8859-1',
        'zipcode': zipcode,
        'asin':'',
        'dpci': dcpi,
        'city':'',
        'state':'',
        })

    url = 'http://sites.target.com/site/en/spot/mobile_fiats_results.jsp?_DARGS=/site/en/spot/mobile_fiats.jsp'
    req = urllib2.Request(url)
    fd = urllib2.urlopen(req, params)
    parse(product_name, fd)
    

if __name__ == '__main__':

    items = (
        ('black 16g', '057-10-1830'),
        ('black 32g', '057-10-1831'),
        ('black 64g', '057-10-1832'),
        ('black 16g att', '057-10-1833'),
        ('black 32g att', '057-10-1834'),
        ('black 64 att', '057-10-1835'),
        
        ('black 16g vzw', '057-10-1836'),
        ('black 32g vzw', '057-10-1837'),
        ('black 64g vzw', '057-10-1838'),

        ('white 16g', '057-10-1838'),
        ('white 32g', '057-10-1840'),
        ('white 64g', '057-10-1841'),

        ('white 16g att', '057-10-1842'),
        ('white 32g att', '057-10-1843'),
        ('white 64g att', '057-10-1844'),

        ('white 16g vzw', '057-10-1845'),
        ('white 32g vzw', '057-10-1846'),
        ('white 46g vzw', '057-10-1847'),
        )

    for product_name, sku in items:
        go(product_name, sku)