Adding a Facebook downloader.

README.md

@@ -179,7 +179,7 @@ Once those are installed, save this script as `download_flickr.py`
 Add this to your crontab with `crontab -e`:
 
     0 * * * * python /home/pi/photoframe/download_flickr.py
-    30 * * * * FLICKR_TAG /home/pi/photoframe/download_koalas.sh
+    30 * * * * FLICKR_TAG=koala /home/pi/photoframe/download_koalas.sh
 
 ### Automatic start of the photo frame software
 

download_facebook.py

@@ -0,0 +1,111 @@
+from urllib import urlopen
+from json import loads
+from sys import argv 
+import dateutil.parser as dateparser
+import logging
+
+# plugin your username and access_token (Token can be get and 
+# modified in the Explorer's Get Access Token button):
+# https://graph.facebook.com/USER_NAME/photos?type=uploaded&fields=source&access_token=ACCESS_TOKEN_HERE
+FACEBOOK_USER_ID = "10203552316662505"
+FACEBOOK_ACCESS_TOKEN = "CAACEdEose0cBAKtF3S5WUN4qSRxljDPWoB28DJmbsd6O71Nz7REORmZAGYrYD8wW8kNE3CDdZBFxZCu4aMQZBtz5XLftzLjlnVjNZBu7TNW6YCEKdJXEVS5ZAZA8mMEypQLrXviYrj68QFdpeaaqiIZBjxSQ0tgZB9x8ME6LjZCUXycZBLzZADUnTN75kjLUNPidmKbTlj5OhEEvnWmkU4ATFCVkUz83JfcHhNkZD"
+
+def get_logger(label='lvm_cli', level='INFO'):
+    """
+    Return a generic logger.
+    """
+    format = '%(asctime)s - %(levelname)s - %(message)s'
+    logging.basicConfig(format=format)
+    logger = logging.getLogger(label)
+    logger.setLevel(getattr(logging, level))
+    return logger
+
+def urlrequest(url):
+    """
+    Make a url request
+    """
+    req = urlopen(url)
+    return req.read()
+
+def get_json(url):
+    """
+    Make a url request and return as a JSON object
+    """
+    res = urlrequest(url)
+    return loads(res)
+
+def get_next(data):
+    """
+    Get next element from facebook JSON response,
+    or return None if no next present.
+    """
+    try:
+        return data['paging']['next']
+    except KeyError:
+        return None
+
+def get_images(data):
+    """
+    Get all images from facebook JSON response,
+    or return None if no data present.
+    """
+    try:
+        return data['data']
+    except KeyError:
+        return []
+
+def get_all_images(url):
+    """
+    Get all images using recursion.
+    """    
+    data = get_json(url)
+    images = get_images(data)
+    next = get_next(data)
+
+    if not next:
+        return images
+    else:
+        return images + get_all_images(next)
+
+def get_url(userid, access_token):
+    """
+    Generates a useable facebook graph API url
+    """
+    root = 'https://graph.facebook.com/'
+    endpoint = '%s/photos?type=uploaded&fields=source,updated_time&access_token=%s' % \
+                (userid, access_token)
+    return '%s%s' % (root, endpoint)
+
+def download_file(url, filename):
+    """
+    Write image to a file.
+    """
+    data = urlrequest(url)
+    path = '/home/pi/photoframe/facebook/%s' % filename
+    f = open(path, 'w')
+    f.write(data)
+    f.close()
+
+def create_time_stamp(timestring):
+    """
+    Creates a pretty string from time
+    """
+    date = dateparser.parse(timestring)
+    return date.strftime('%Y-%m-%d-%H:%M:%S')
+
+def download(userid, access_token):
+    """
+    Download all images to current directory.
+    """
+    logger = get_logger()
+    url = get_url(userid, access_token)
+    logger.info('Requesting image direct link, please wait..')
+    images = get_all_images(url)
+
+    for image in images:
+        logger.info('Downloading %s' % image['source'])
+        filename = '%s.jpg' % create_time_stamp(image['created_time'])
+        download_file(image['source'], filename)
+
+if __name__ == '__main__':
+    download(FACEBOOK_USER_ID, FACEBOOK_ACCESS_TOKEN)