def login(self, request):
"""
Attempts to login using user credentials
"""
if request.method == 'POST':
email = request.form['email']
password = request.form['password']
error = None
# When email field is not filled in.
if not email:
error = 'An email is required.'
# When password field is not filled in.
elif not password:
error = 'Password is required.'
else:
try:
database = Database()
user = database.login(email, password)
# TODO Remove for production
#flask_app.logger.info(user)
self.user.set_user(user)
except Exception as err:
error = err
if error:
raise Exception(error)
else:
return
def get_images(self, limit=20):
"""
Simple DB call to get X number of images,
with a default image limit of 20.
Returns a Pyrebase object which may,
or may not contain results.
"""
# Set variable defaults.
error = None
images = False
# Set try to fetch images from DB.
try:
database = Database()
images = database.get_images(limit)
# Pass DB error back to controller.
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
# Pass DB error back to controller.
raise Exception(error)
else:
# successfully returned Pyrebase.
return images
def delete_image(self, image_id):
"""
Delete method.
Fetches the image ID from the DB, and removes it from the DB.
"""
error = None
# Validates the request, fetches the ID from the DB, and deletes it from the DB.
try:
database = Database()
database.delete_image(image_id)
except Exception as err:
# Identifies if flask is the cause of the error, and raises error if true.
flask_app.logger.info(err)
error = err
if error:
# Raise error from failed Firebase request.
raise Exception(error)
else:
# Return on success.
return
def login(self, request):
if request.method == 'POST':
# reuqests form infomation for email, and password.
email = request.form['email']
password = request.form['password']
error = None
if not email:
# No email gotten in the request, push readable error
error = 'An email is required.'
elif not password:
# No password pulled in the request, push readable error
error = 'Password is required.'
else:
try:
# Pulls infomation about email and password from database.
database = Database()
user = database.login(email, password)
# TODO Remove for production
#flask_app.logger.info(user)
self.user.set_user(user)
except Exception as err:
error = err
if error:
raise Exception(error)
else:
return
def update(self, request):
if request.method == 'POST':
first_name = request.form['firstname']
last_name = request.form['lastname']
error = None
if not first_name:
error = 'A first name is required.'
elif not last_name:
error = 'A last name is required.'
else:
if 'avatar' in request.files:
file = request.files['avatar']
if file.filename:
flask_app.logger.info(file)
uploader = Upload()
avatar = uploader.upload(file, session['user']['localId'])
session['user']['avatar'] = avatar
try:
session['user']['first_name'] = first_name
session['user']['last_name'] = last_name
database = Database()
user_auth = database.update_user(session['user'])
except Exception as err:
error = err
if error:
flash(str(error))
def like(self, image_id, like, request):
changed = False
#Checks in the image like data is true or false
# and displays the approriate heart.
likes = session['user']['likes']
#If like = true and the image_id isnt in likes in the database
#add it to database with like being set to true
if like == 'true':
if image_id not in likes:
likes.append(image_id)
changed = True
else:
# If Image_id is in likes, remove image_id from likes.
if image_id in likes:
likes.remove(image_id)
changed = True
if changed:
# If changed change appearance of the heart on screen
# by pulling the data from the database
session['user']['likes'] = likes
database = Database()
database.update_user(session['user'])
session.modified = True
return changed
def get_category_images(self, category, limit=20):
"""
Get method
Fetches image IDs from a selected category from the DB, and limits the number displayed to 20.
"""
error = None
images = False
# Validates and sends the request to the DB.
try:
database = Database()
images = database.get_category_images(category, limit)
except Exception as err:
# Identifies if flask is the cause of the error, and raises error if true.
flask_app.logger.info(err)
error = err
if error:
# Raise error from failed Firebase request.
raise Exception(error)
else:
# Return on success.
return images
def login(self, request):
if request.method == 'POST':
email = request.form['email']
password = request.form['password']
#If a email or password hasnt been provided error is provided.
error = None
if not email:
error = 'An email is required.'
elif not password:
error = 'Password is required.'
else:
try:
#Sends request if email and password is provided
database = Database()
user = database.login(email, password)
# TODO Remove for production
#flask_app.logger.info(user)
self.user.set_user(user)
except Exception as err:
error = err
if error:
raise Exception(error)
# Raise error from failed Firebase request
else:
# Return on success
return
def login(self, request):
"""
It gets the users login credentials from the form and then sends it to the database
"""
if request.method == 'POST':
email = request.form['email']
password = request.form['password']
error = None
if not email:
error = 'An email is required.'
elif not password:
error = 'Password is required.'
else:
try:
database = Database()
user = database.login(email, password)
# TODO Remove for production
#flask_app.logger.info(user)
self.user.set_user(user)
except Exception as err:
error = err
if error:
raise Exception(error)
else:
return
def like(self, image_id, like, request):
"""
Like method.
If user likes image, then that image will be added to their
liked images list.
If the user unlikes image, then that iamge will be removed
from their liked images list.
"""
changed = False
likes = session['user']['likes']
# User has liked Image.
if like == 'true':
# Check if user has already liked it
if image_id not in likes:
likes.append(image_id)
changed = True
else:
# User unlikes image.
if image_id in likes:
likes.remove(image_id)
changed = True
# If likes are changed will be updated in the database.
if changed:
session['user']['likes'] = likes
database = Database()
database.update_user(session['user'])
# Updates the session.
session.modified = True
return changed
def login(self, request):
"""
login method.
Processes POST request, and logs the user into Firebase upon success.
"""
# Request is sent to Firebase DB.
if request.method == 'POST':
email = request.form['email']
password = request.form['password']
# Validates required login fields.
error = None
if not email:
error = 'An email is required.'
elif not password:
error = 'Password is required.'
else:
try:
database = Database()
user = database.login(email, password)
# TODO Remove for production
#flask_app.logger.info(user)
self.user.set_user(user)
except Exception as err:
error = err
if error:
# Raise error from failed Firebase request.
raise Exception(error)
else:
# Return on success.
return
def get_user_images(self, limit=20):
"""
Get method.
Fetches the user's images from the 'my images' list in the DB, and displays a maximum of 20 images from this list.
"""
# Validates required registration fields.
error = None
images = False
user_id = False
if (session['user'] and session['user']['localId']):
user_id = session['user']['localId']
try:
# Attempts to fetch the images associated with the users' ID from the DB.
database = Database()
images = database.get_images(limit, user_id)
except Exception as err:
# Identifies if flask is the cause of the error, and raises error if true.
flask_app.logger.info(err)
error = err
if error:
# Raise error on failed Firebase request.
raise Exception(error)
else:
# Return on success.
return images
def like(self, image_id, like, request):
"""
Like method.
Processes POST request, adds/removes the image from the user's 'liked images' or 'unliked images'
Parameters:
request (obj): The POST request object (the like)
Raises:
error (exception): Error from failed Firebase data request
"""
# DB checks the users likes in regards to image IDs
changed = False
likes = session['user']['likes']
# Firebase checks the whether the image is in the user's 'liked images' or 'unliked images' lists.
if like == 'true':
if image_id not in likes:
likes.append(image_id)
changed = True
else:
if image_id in likes:
likes.remove(image_id)
changed = True
if changed:
session['user']['likes'] = likes
database = Database()
database.update_user(session['user'])
session.modified = True
# Return change upon success
return changed
def get_user_images(self, limit=20):
# Inital Variable Values
error = None
images = False
user_id = False
#Checks for images that have been uploaded by the sesson user.
if (session['user'] and session['user']['localId']):
user_id = session['user']['localId']
try:
#Pulls images from database with a limit of 20
#and has the same user_id
database = Database()
images = database.get_images(limit, user_id)
except Exception as err:
# We have error, pass it back to controller
flask_app.logger.info(err)
error = err
if error:
# We have error, pass it back to controller
raise Exception(error)
else:
# We have no errors, return images
return images
def get_image(self, image_id):
"""
Get method.
Processes request and fetches image ID, and displays the fetched image for the user.
"""
error = None
image = False
# Validates the request and fetches the ID from the DB.
try:
database = Database()
image = database.get_image(image_id)
except Exception as err:
# Identifies if flask is the cause of the error, and raises error if true.
flask_app.logger.info(err)
error = err
if error:
# Raise error from failed Firebase request.
raise Exception(error)
else:
# Return on success
return image
def update(self, request):
if request.method == 'POST':
first_name = request.form['firstname']
last_name = request.form['lastname']
error = None
if not first_name:
error = 'A first name is required.'
elif not last_name:
error = 'A last name is required.'
else:
if 'avatar' in request.files:
file = request.files['avatar']
if file.filename:
uploader = Upload()
avatar = uploader.upload(file,
session['user']['localId'])
session['user']['avatar'] = "/" + avatar.strip("/")
try:
session['user']['first_name'] = first_name
session['user']['last_name'] = last_name
database = Database()
user_auth = database.update_user(session['user'])
session.modified = True
except Exception as err:
error = err
if error:
raise Exception(error)
else:
return
def upload(self, request):
image_id = str(uuid.uuid1())
name = request.form['name']
description = request.form['description']
category = request.form['category']
image_filter = request.form['filter']
# Validates required registration fields
error = None
user_id = False
if (session['user'] and session['user']['localId']):
user_id = session['user']['localId']
user_name = session['user']['first_name'] + " " + session['user']['last_name']
user_avatar = session['user']['avatar']
else:
error = 'You must be logged in to upload an image.'
if 'image' not in request.files:
error = 'A file is required.'
else:
file = request.files['image']
if not error:
if file.filename == '':
error = 'A file is required.'
elif not name:
error = 'An name is required.'
elif not description:
error = 'A description is required.'
elif not category:
error = 'A category is required.'
else:
try:
uploader = Upload()
upload_location = uploader.upload(file, image_id)
image_data = {
"id": image_id,
"upload_location": '/' + upload_location,
"user_id": user_id,
"user_name": user_name,
"user_avatar": user_avatar,
"name": name,
"description": description,
"category": category,
"filter": image_filter,
"created_at": int(time.time())
}
database = Database()
uploaded = database.save_image(image_data, image_id)
except Exception as err:
error = err
if error:
flask_app.logger.info('################ UPLOAD ERROR #######################')
flask_app.logger.info(error)
raise Exception(error)
else:
return image_id
def update(self, image_id, request):
name = request.form['name']
description = request.form['description']
category = request.form['category']
image_filter = request.form['filter']
created_at = request.form['created_at']
upload_location = request.form['upload_location']
# Validates required registration fields
error = None
user_id = False
if (session['user'] and session['user']['localId']):
user_id = session['user']['localId']
user_name = session['user']['first_name'] + " " + session['user'][
'last_name']
user_avatar = session['user']['avatar']
else:
error = 'You must be logged in to update an image.'
if not error:
if not name:
error = 'An name is required.'
elif not description:
error = 'A description is required.'
elif not category:
error = 'A category is required.'
else:
try:
image_data = {
"id": image_id,
"upload_location": upload_location,
"user_id": user_id,
"user_name": user_name,
"user_avatar": user_avatar,
"name": name,
"description": description,
"category": category,
"filter": image_filter,
"created_at": created_at
}
database = Database()
uploaded = database.save_image(image_data, image_id)
except Exception as err:
error = err
if error:
flask_app.logger.info(
'################ UPDATE ERROR #######################')
flask_app.logger.info(error)
raise Exception(error)
else:
return
def register(self, request):
"""
Registration method.
Processes POST request, and registers user in Firebase on success
Parameters:
request (obj): The POST request object
Raises:
error (Exception): Error from failed Firebase request
"""
# Extract required fields from POST request
email = request.form['email']
password = request.form['password']
password_confirm = request.form['password_confirm']
# Validates required registration fields
error = None
if not email:
error = 'An email is required.'
elif not password:
error = 'Password is required.'
elif 6 > len(password):
error = 'Your password must be at least 6 characters long.'
elif not password_confirm:
error = 'Password confirmation is required.'
elif password != password_confirm:
error = 'Password and password confirmation should match.'
else:
try:
user_data = {
"localId": "",
"email": email,
"first_name": "",
"last_name": "",
"avatar": ""
}
# Attempt to process valid registration request
database = Database()
user_auth = database.register(user_data, password)
except Exception as err:
# Raise error from failed Firebase request
error = err
if error:
# Raise error from failed Firebase request
raise Exception(error)
else:
# Return on success
return
def index():
error = None
latest_images = []
try:
database = Database()
latest_images = database.get_latest_images()
except Exception as err:
error = err
if error:
flash(error)
return render_template('home.html', latest_images=latest_images)
def update(self, request):
"""
Update method.
Processes update request, and edits users' data in Firebase upon success.
Parameters:
request (obj): The POST request object
Raises:
error (Exception): Error from failed Firebase request
"""
# Extracts the required fields from POST request.
if request.method == 'POST':
first_name = request.form['firstname']
last_name = request.form['lastname']
# Validates required fields from the update request.
error = None
if not first_name:
error = 'A first name is required.'
elif not last_name:
error = 'A last name is required.'
else:
if 'avatar' in request.files:
file = request.files['avatar']
if file.filename:
uploader = Upload()
avatar = uploader.upload(file,
session['user']['localId'])
session['user']['avatar'] = "/" + avatar.strip("/")
try:
session['user']['first_name'] = first_name
session['user']['last_name'] = last_name
database = Database()
user_auth = database.update_user(session['user'])
session.modified = True
except Exception as err:
# Raises error from failed Firebase request.
error = err
if error:
# Raises error from failed Firebase request.
raise Exception(error)
else:
# Return upon success
return
def delete_image(self, image_id):
#Hello, this bit tells the server that the chosen image should be designated "gone".
error = None
try:
database = Database()
database.delete_image(image_id)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
raise Exception(error)
else:
return
def delete_image(self, image_id):
error = None
try:
database = Database()
database.delete_image(image_id)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
raise Exception(error)
else:
return
def get_images(self, limit=20):
#Presumably looks for all the images in the server.
error = None
images = False
try:
database = Database()
images = database.get_images(limit)
except Exception as err:
flask_app.logger.info(err)
error = err
#These two tell you if things failed.
if error:
raise Exception(error)
else:
return images
def get_image(self, image_id):
error = None
image = False
try:
database = Database()
image = database.get_image(image_id)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
raise Exception(error)
else:
return image
def get_category_images(self, category, limit=20):
error = None
images = False
try:
database = Database()
images = database.get_category_images(category, limit)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
raise Exception(error)
else:
return images
def delete_image(self, image_id):
error = None
try:
#request is made to database to delete image
database = Database()
database.delete_image(image_id)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
# Raise error from failed Firebase request
raise Exception(error)
else:
return
def delete_image(self, image_id):
# Inital Variable Values
error = None
# Tries to delete image id in database.
try:
database = Database()
database.delete_image(image_id)
# Failed to get delete image raise a exception
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
# We have error, pass it back to controller
raise Exception(error)
else:
# We have no errors, return
return
def get_images(self, limit=20):
# Inital Variable Values
error = None
images = False
try:
# Pull images from database with the limit in place.
database = Database()
images = database.get_images(limit)
except Exception as err:
flask_app.logger.info(err)
error = err
if error:
raise Exception(error)
else:
# Successfully returned pyrebase objects
return images
def get_image(self, image_id):
# Inital Variable Values
error = None
image = False
#Tries to pull image id
try:
database = Database()
image = database.get_image(image_id)
# Failed to get images raise a exception.
except Exception as err:
flask_app.logger.info(err)
error = err
#Check if we have an error
if error:
# We have error, pass it back to controller
raise Exception(error)
else:
# We have no errors, return images
return image
