/
webimages.py
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/
webimages.py
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import json
import os
import urllib
import datetime
from google.appengine.api import users, mail
from google.appengine.ext import blobstore, ndb
from google.appengine.ext.blobstore.blobstore import BlobKey
from google.appengine.ext.webapp import blobstore_handlers
import webapp2
import jinja2
JINJA_ENVIRONMENT = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
extensions=['jinja2.ext.autoescape'],
autoescape=True)
DEFAULT_IMAGE_NAME = 'Instaimage'
class UserImage(ndb.Model):
owner = ndb.StringProperty()
blob_key = ndb.BlobKeyProperty()
likes_count = ndb.IntegerProperty(default=0)
unlike_count = ndb.IntegerProperty(default=0)
comment = ndb.StringProperty()
number_of_comments = ndb.IntegerProperty(default=0)
type = ndb.StringProperty()
date = ndb.DateTimeProperty(auto_now_add=True)
user_id_likes_unlikes = ndb.StringProperty(repeated=True)
def uploaded_image_key(image_name=DEFAULT_IMAGE_NAME):
"""Constructs a Datastore key for a Imagename entity with name."""
return ndb.Key('Uploadeddata', image_name)
class MainPage(webapp2.RequestHandler):
def get(self):
self.response.out.write('<html><body>')
upload_url = blobstore.create_upload_url('/upload_photo')
image_name = self.request.get('image_name', DEFAULT_IMAGE_NAME)
images = UserImage.query(
ancestor=uploaded_image_key(image_name)) \
.order(-UserImage.date) \
.fetch(10)
user = users.get_current_user()
if user:
url = users.create_logout_url(self.request.uri)
url_linktext = 'Logout'
else:
url = users.create_login_url(self.request.uri)
url_linktext = 'Login'
template_values = {
'user': user,
'images': images,
'upload_url': upload_url,
'url': url,
'url_linktext': url_linktext,
}
template = JINJA_ENVIRONMENT.get_template('uploadimage.html')
self.response.write(template.render(template_values))
class UploadImage(blobstore_handlers.BlobstoreUploadHandler):
def post(self):
try:
image_name = self.request.get('image_name', DEFAULT_IMAGE_NAME)
image = UserImage(parent=uploaded_image_key(image_name))
upload = self.get_uploads()[0]
if users.get_current_user():
image.owner = users.get_current_user().nickname()
filetype = upload.content_type
if filetype.startswith('video'):
image.type = 'video'
image.put()
elif filetype.startswith('image'):
image.type = 'image'
image.put()
else:
return self.response.out.write("Invalid file format")
image.blob_key = upload.key()
image.put()
self.redirect('/?' + urllib.urlencode(
{'Uploadeddata': image_name}))
except Exception as e:
self.response.out.write('Please try after sometime.')
class DisplayImage(blobstore_handlers.BlobstoreDownloadHandler):
def get(self):
photo_key = self.request.get('img_id')
blobinfo = blobstore.get(photo_key)
if not blobstore.get(photo_key):
self.error(404)
else:
self.send_blob(photo_key, blobinfo.content_type)
class Countlikes(webapp2.RequestHandler):
"""
Increase the count of likes and dislikes
"""
def post(self):
user = users.get_current_user()
if user:
data = json.loads(self.request.body)
response = data['like']
user_id = users.get_current_user().user_id()
image = UserImage.query().filter(
UserImage.blob_key == BlobKey((data['id']))).get()
if not user_id in image.user_id_likes_unlikes:
if response == 'Like':
if not image.likes_count:
image.likes_count = 0
image.likes_count += 1
else:
if not image.unlike_count:
image.unlike_count = 0
image.unlike_count += 1
image.user_id_likes_unlikes.append(user_id)
image.put()
self.response.out.write(json.dumps({'type': '+OK'}))
else:
self.response.out.write(
json.dumps({'msg': 'You cannot like or unlike the data again',
'type': '-ERR'}))
else:
self.response.out.write(
json.dumps({'msg': 'Please login to change the like',
'type': '-ERR'}))
class CommentOnImage(webapp2.RequestHandler):
def post(self):
user = users.get_current_user()
if user:
data = json.loads(self.request.body)
image = UserImage.query().filter(
UserImage.blob_key == BlobKey(data['id'])).get()
image.comment = data['comment']
image.put()
if not image.number_of_comments:
image.number_of_comments = 0
image.number_of_comments += 1
image.put()
self.response.out.write(json.dumps({'type': '+OK'}))
else:
self.response.out.write(json.dumps(
{'msg': 'Please login to comment on the image',
'type': '-ERR'}))
class SendUploadedData(webapp2.RequestHandler):
"""
Send email that contains the website details
"""
def get(self):
#enter the sender email address
sender_address = ""
#enter the recipient email address
recipient = ""
subject = "Website details"
last_hour = datetime.datetime.now() - datetime.timedelta(hours=1)
image_name = self.request.get('image_name', DEFAULT_IMAGE_NAME)
images = UserImage.query(
ancestor=uploaded_image_key(image_name)) \
.filter(UserImage.date > last_hour)
uploads = images.count()
likes = 0
unlikes = 0
comments = 0
for image in images:
likes += image.likes_count
unlikes += image.unlike_count
comments += image.number_of_comments
body = """
Following are the last hour updates:
Number of uploads = %s
Number of likes = %s
Number of unlikes = %s
Number of comments = %s
""" % (uploads, likes, unlikes, comments)
mail.send_mail(sender_address, recipient, subject, body)
app = webapp2.WSGIApplication([
('/', MainPage),
('/upload_photo', UploadImage),
('/img', DisplayImage),
('/changelike', Countlikes),
('/comment', CommentOnImage),
('/senduploadeddata', SendUploadedData),
], debug=True)