adds more advanced database handling unsing sql alchemy

- moves app into package
- adds sql alchemy equipment
- moves templates into server package
- add app.db sqlite file
This commit is contained in:
Raphael Maenle 2020-04-22 20:15:21 +00:00
parent 8f20be53e1
commit f156d38739
19 changed files with 605 additions and 275 deletions

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app.py
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# Python standard libraries
import json
import os
import sqlite3
# Third-party libraries
import flask
from flask import Flask, redirect, request, url_for
from flask_login import (
LoginManager,
current_user,
login_required,
login_user,
logout_user,
)
from oauthlib.oauth2 import WebApplicationClient
import requests
# Internal imports
from database.db import init_db_command
from database.user import User
from database.user import dbCalendar
import backend.caltojson as caltojson
import google.oauth2.credentials
import google_auth_oauthlib.flow
import googleapiclient.discovery
# Configuration
CLIENT_SECRETS_FILE = "certificate/client_secret.json"
# This OAuth 2.0 access scope allows for full read/write access to the
# authenticated user's account and requires requests to use an SSL connection.
SCOPES = ["https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile", "https://www.googleapis.com/auth/calendar.readonly", "openid"]
API_SERVICE_NAME = 'calendar'
API_VERSION = 'v3'
GOOGLE_CLIENT_ID ="377787187748-shuvi4iq5bi4gdet6q3ioataimobs4lh.apps.googleusercontent.com"
GOOGLE_CLIENT_SECRET = "Hu_YWmKsVKUcLwyeINYzdKfZ"
GOOGLE_DISCOVERY_URL = (
"https://accounts.google.com/.well-known/openid-configuration"
)
# Flask app setup
app = Flask(__name__,
static_folder='static',
template_folder='template')
app.secret_key = os.environ.get("SECRET_KEY") or os.urandom(24)
# User session management setup
# https://flask-login.readthedocs.io/en/latest
login_manager = LoginManager()
login_manager.init_app(app)
# Naive database setup
try:
init_db_command()
except sqlite3.OperationalError:
# Assume it's already been created
pass
# OAuth 2 client setup
client = WebApplicationClient(GOOGLE_CLIENT_ID)
# Flask-Login helper to retrieve a user from our db
@login_manager.user_loader
def load_user(user_id):
return User.get(user_id)
@app.route("/")
def account():
return flask.redirect('account')
@app.route("/account")
def index():
if current_user.is_authenticated:
updateCalendars()
return (flask.render_template('account.html',
username = current_user.name, email = current_user.email, profile_img=current_user.profile_pic
)
)
else:
return flask.render_template('login.html')
def get_google_provider_cfg():
return requests.get(GOOGLE_DISCOVERY_URL).json()
class Calendar:
def __init__(self, name, toggle='False', color="#000000"):
self.name = name
self.color = color
self.toggle=toggle
def calendarsFromDb():
calendars = dbCalendar.getCalendars(current_user.id)
pyCalendars = []
for calendar in calendars:
name = calendar[2]
calId = calendar[1]
toggle = calendar[3]
color = calendar[4]
pyCalendars.append(Calendar(name, toggle, color))
return pyCalendars
@app.route("/calendar")
@login_required
def calendar():
calendars = calendarsFromDb()
return flask.render_template('calendar.html', calendars=calendars)
def getCalendarJson():
if 'credentials' not in flask.session:
return flask.redirect('login/google')
# Load credentials from the session.
credentials = google.oauth2.credentials.Credentials(
**flask.session['credentials'])
todaysCal = caltojson.generateJsonFromCalendarEntries(credentials)
with open('./userinfo/' + current_user.id + '/calendarevents.json', 'w') as outfile:
json.dump(todaysCal, outfile)
return todaysCal
def updateCalendars():
if 'credentials' not in flask.session:
return flask.redirect('login/google')
# Load credentials from the session.
credentials = google.oauth2.credentials.Credentials(
**flask.session['credentials'])
calendars = caltojson.getCalendarList(credentials)
for calendar in calendars:
if dbCalendar.getCalendar(current_user.id, calendar.calendarId) == None:
dbCalendar.create(current_user.id, calendar.calendarId, calendar.summary, calendar.color)
print("updated Calendars")
# Save credentials back to session in case access token was refreshed.
# ACTION ITEM: In a production app, you likely want to save these
# credentials in a persistent database instead.
flask.session['credentials'] = credentials_to_dict(credentials)
@app.route("/login/google")
def login():
'''
# Find out what URL to hit for Google login
google_provider_cfg = get_google_provider_cfg()
authorization_endpoint = google_provider_cfg["authorization_endpoint"]
# Use library to construct the request for Google login and provide
# scopes that let you retrieve user's profile from Google
request_uri = client.prepare_request_uri(
authorization_endpoint,
redirect_uri=request.base_url + "/callback",
scope=["openid", "email", "profile", "https://www.googleapis.com/auth/calendar.readonly"],
)
return redirect(request_uri)
'''
# Create flow instance to manage the OAuth 2.0 Authorization Grant Flow steps.
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES)
# The URI created here must exactly match one of the authorized redirect URIs
# for the OAuth 2.0 client, which you configured in the API Console. If this
# value doesn't match an authorized URI, you will get a 'redirect_uri_mismatch'
# error.
flow.redirect_uri = request.base_url + "/callback"
authorization_url, state = flow.authorization_url(
# Enable offline access so that you can refresh an access token without
# re-prompting the user for permission. Recommended for web server apps.
access_type='offline',
# Enable incremental authorization. Recommended as a best practice.
include_granted_scopes='true')
# Store the state so the callback can verify the auth server response.
flask.session['state'] = state
return flask.redirect(authorization_url)
@app.route("/login/google/callback")
def callback():
# Specify the state when creating the flow in the callback so that it can
# verified in the authorization server response.
state = flask.session['state']
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES, state=state)
flow.redirect_uri = request.base_url
# Use the authorization server's response to fetch the OAuth 2.0 tokens.
authorization_response = flask.request.url
flow.fetch_token(authorization_response=authorization_response)
# Store credentials in the session.
# ACTION ITEM: In a production app, you likely want to save these
# credentials in a persistent database instead.
credentials = flow.credentials
flask.session['credentials'] = credentials_to_dict(credentials)
session = flow.authorized_session()
userinfo = session.get('https://www.googleapis.com/userinfo/v2/me').json()
# Create a user in your db with the information provided
# by Google
user = User(
id_=userinfo['id'],
name=userinfo['name'],
email=userinfo['email'],
profile_pic=userinfo['picture']
)
# Doesn't exist? Add it to the database.
if not User.get(user.id):
User.create(user.id, user.name, user.email, user.profile_pic)
# Begin user session by logging the user in
login_user(user)
return flask.redirect(flask.url_for('index'))
@app.route("/logout")
@login_required
def logout():
logout_user()
return redirect(url_for("index"))
def credentials_to_dict(credentials):
return {'token': credentials.token,
'refresh_token': credentials.refresh_token,
'token_uri': credentials.token_uri,
'client_id': credentials.client_id,
'client_secret': credentials.client_secret,
'scopes': credentials.scopes}
@app.route("/userinfo/<path:user>/calendarevents.json")
def downloader(user):
print(user)
path = "/home/raphael/dev/website_ws/website/userinfo/" + user
return flask.send_from_directory(path, "calendarevents.json")
# POST
@app.route('/calendar', methods = ['POST', 'DELETE'])
@login_required
def user():
if request.method == 'POST':
calName = request.json.get('calendar_id')
color = request.json.get('color')
toggle = request.json.get('toggle')
if color != None:
dbCalendar.updateCalendar(current_user.id, calName, color=color)
if toggle != None:
dbCalendar.updateCalendar(current_user.id, calName, toggle=toggle)
# toggle specific calendar of user
elif request.method == 'DELETE':
# do nothing
return 'NONE'
else:
# POST Error 405
print("405")
return 'OK'
from server import app
if __name__ == "__main__":
context = ('certificate/xip.io.crt', 'certificate/xip.io.key')#certificate and key files

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Subproject commit fed3fddb2182d27a3bd832f354e0ec1b9ac61667
Subproject commit aaf66a1f105b9baceb13fd59287f8682325270dd

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import os
basedir = os.path.abspath(os.path.dirname(__file__))
class Config(object):
# ...
SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
'sqlite:///' + os.path.join(basedir, 'app.db')
SQLALCHEMY_TRACK_MODIFICATIONS = False

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from flask_login import UserMixin
from pathlib import Path
from database.db import get_db
from server.database.db import get_db
class User(UserMixin):
def __init__(self, id_, name, email, profile_pic):

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migrations/README Normal file
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Generic single-database configuration.

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migrations/alembic.ini Normal file
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# A generic, single database configuration.
[alembic]
# template used to generate migration files
# file_template = %%(rev)s_%%(slug)s
# set to 'true' to run the environment during
# the 'revision' command, regardless of autogenerate
# revision_environment = false
# Logging configuration
[loggers]
keys = root,sqlalchemy,alembic
[handlers]
keys = console
[formatters]
keys = generic
[logger_root]
level = WARN
handlers = console
qualname =
[logger_sqlalchemy]
level = WARN
handlers =
qualname = sqlalchemy.engine
[logger_alembic]
level = INFO
handlers =
qualname = alembic
[handler_console]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
formatter = generic
[formatter_generic]
format = %(levelname)-5.5s [%(name)s] %(message)s
datefmt = %H:%M:%S

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from __future__ import with_statement
import logging
from logging.config import fileConfig
from sqlalchemy import engine_from_config
from sqlalchemy import pool
from alembic import context
# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
# Interpret the config file for Python logging.
# This line sets up loggers basically.
fileConfig(config.config_file_name)
logger = logging.getLogger('alembic.env')
# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
from flask import current_app
config.set_main_option(
'sqlalchemy.url',
str(current_app.extensions['migrate'].db.engine.url).replace('%', '%%'))
target_metadata = current_app.extensions['migrate'].db.metadata
# other values from the config, defined by the needs of env.py,
# can be acquired:
# my_important_option = config.get_main_option("my_important_option")
# ... etc.
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url, target_metadata=target_metadata, literal_binds=True
)
with context.begin_transaction():
context.run_migrations()
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
# this callback is used to prevent an auto-migration from being generated
# when there are no changes to the schema
# reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
def process_revision_directives(context, revision, directives):
if getattr(config.cmd_opts, 'autogenerate', False):
script = directives[0]
if script.upgrade_ops.is_empty():
directives[:] = []
logger.info('No changes in schema detected.')
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix='sqlalchemy.',
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata,
process_revision_directives=process_revision_directives,
**current_app.extensions['migrate'].configure_args
)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()

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"""${message}
Revision ID: ${up_revision}
Revises: ${down_revision | comma,n}
Create Date: ${create_date}
"""
from alembic import op
import sqlalchemy as sa
${imports if imports else ""}
# revision identifiers, used by Alembic.
revision = ${repr(up_revision)}
down_revision = ${repr(down_revision)}
branch_labels = ${repr(branch_labels)}
depends_on = ${repr(depends_on)}
def upgrade():
${upgrades if upgrades else "pass"}
def downgrade():
${downgrades if downgrades else "pass"}

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"""empty message
Revision ID: 92db2e496087
Revises:
Create Date: 2020-04-20 21:33:50.061962
"""
from alembic import op
import sqlalchemy as sa
# revision identifiers, used by Alembic.
revision = '92db2e496087'
down_revision = None
branch_labels = None
depends_on = None
def upgrade():
# ### commands auto generated by Alembic - please adjust! ###
op.create_table('calendar',
sa.Column('usr_id', sa.String(length=21), nullable=True),
sa.Column('calendar_id', sa.String(length=256), nullable=False),
sa.Column('name', sa.String(length=256), nullable=True),
sa.Column('toggle', sa.String(length=8), nullable=True),
sa.Column('color', sa.String(length=16), nullable=True),
sa.PrimaryKeyConstraint('calendar_id')
)
op.create_index(op.f('ix_calendar_name'), 'calendar', ['name'], unique=False)
op.create_index(op.f('ix_calendar_usr_id'), 'calendar', ['usr_id'], unique=False)
op.create_table('user',
sa.Column('id', sa.String(length=21), nullable=False),
sa.Column('username', sa.String(length=64), nullable=True),
sa.Column('email', sa.String(length=120), nullable=True),
sa.Column('profile_pic', sa.String(length=256), nullable=True),
sa.Column('password_hash', sa.String(length=128), nullable=True),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_user_email'), 'user', ['email'], unique=True)
op.create_index(op.f('ix_user_username'), 'user', ['username'], unique=True)
# ### end Alembic commands ###
def downgrade():
# ### commands auto generated by Alembic - please adjust! ###
op.drop_index(op.f('ix_user_username'), table_name='user')
op.drop_index(op.f('ix_user_email'), table_name='user')
op.drop_table('user')
op.drop_index(op.f('ix_calendar_usr_id'), table_name='calendar')
op.drop_index(op.f('ix_calendar_name'), table_name='calendar')
op.drop_table('calendar')
# ### end Alembic commands ###

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import os
import sqlite3
from flask import Flask
from config import Config
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_login import LoginManager
# Flask app setup
app = Flask(__name__,
static_folder='static',
template_folder='template')
app.secret_key = os.environ.get("SECRET_KEY") or os.urandom(24)
app.config.from_object(Config)
db = SQLAlchemy(app)
migrate = Migrate(app, db)
# User session management setup
# https://flask-login.readthedocs.io/en/latest
login_manager = LoginManager(app)
from server import routes, models

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import google.oauth2.credentials
import google_auth_oauthlib.flow
import googleapiclient.discovery
import backend.caltojson as caltojson
from oauthlib.oauth2 import WebApplicationClient
import flask
# Python standard libraries
import json
import os
import sqlite3
# Third-party libraries
import flask
from flask import Flask, redirect, request, url_for
from flask_login import (
LoginManager,
current_user,
login_required,
login_user,
logout_user,
)
import requests
from server.models import Calendar as dbCalendar
# Configuration
CLIENT_SECRETS_FILE = "certificate/client_secret.json"
# This OAuth 2.0 access scope allows for full read/write access to the
# authenticated user's account and requires requests to use an SSL connection.
SCOPES = ["https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile", "https://www.googleapis.com/auth/calendar.readonly", "openid"]
API_SERVICE_NAME = 'calendar'
API_VERSION = 'v3'
GOOGLE_CLIENT_ID ="377787187748-shuvi4iq5bi4gdet6q3ioataimobs4lh.apps.googleusercontent.com"
GOOGLE_CLIENT_SECRET = "Hu_YWmKsVKUcLwyeINYzdKfZ"
GOOGLE_DISCOVERY_URL = (
"https://accounts.google.com/.well-known/openid-configuration"
)
# OAuth 2 client setup
client = WebApplicationClient(GOOGLE_CLIENT_ID)
def login():
# Create flow instance to manage the OAuth 2.0 Authorization Grant Flow steps.
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES)
# The URI created here must exactly match one of the authorized redirect URIs
# for the OAuth 2.0 client, which you configured in the API Console. If this
# value doesn't match an authorized URI, you will get a 'redirect_uri_mismatch'
# error.
flow.redirect_uri = request.base_url + "/callback"
authorization_url, state = flow.authorization_url(
# Enable offline access so that you can refresh an access token without
# re-prompting the user for permission. Recommended for web server apps.
access_type='offline',
# Enable incremental authorization. Recommended as a best practice.
include_granted_scopes='true')
# Store the state so the callback can verify the auth server response.
flask.session['state'] = state
# Flask-Login helper to retrieve a user from our db
return authorization_url
def verifyResponse():
# Specify the state when creating the flow in the callback so that it can
# verified in the authorization server response.
state = flask.session['state']
flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
CLIENT_SECRETS_FILE, scopes=SCOPES, state=state)
flow.redirect_uri = request.base_url
# Use the authorization server's response to fetch the OAuth 2.0 tokens.
authorization_response = flask.request.url
flow.fetch_token(authorization_response=authorization_response)
# Store credentials in the session.
# ACTION ITEM: In a production app, you likely want to save these
# credentials in a persistent database instead.
credentials = flow.credentials
flask.session['credentials'] = credentials_to_dict(credentials)
session = flow.authorized_session()
return session
def get_google_provider_cfg():
return requests.get(GOOGLE_DISCOVERY_URL).json()
class Calendar:
def __init__(self, name, toggle='False', color="#000000"):
self.name = name
self.color = color
self.toggle=toggle
def calendarsFromDb():
calendars = dbCalendar.getCalendars(dbCalendar, current_user.id)
pyCalendars = []
for calendar in calendars:
name = calendar.name
calId = calendar.calendar_id
toggle = calendar.toggle
color = calendar.color
pyCalendars.append(Calendar(name, toggle, color))
return pyCalendars
def getCalendarJson():
if 'credentials' not in flask.session:
return flask.redirect('login/google')
# Load credentials from the session.
credentials = google.oauth2.credentials.Credentials(
**flask.session['credentials'])
todaysCal = caltojson.generateJsonFromCalendarEntries(credentials)
with open('./userinfo/' + current_user.id + '/calendarevents.json', 'w') as outfile:
json.dump(todaysCal, outfile)
return todaysCal
def updateCalendars():
if 'credentials' not in flask.session:
return flask.redirect('login/google')
# Load credentials from the session.
credentials = google.oauth2.credentials.Credentials(
**flask.session['credentials'])
calendars = caltojson.getCalendarList(credentials)
for calendar in calendars:
if dbCalendar.getCalendar(dbCalendar, current_user.id, calendar.calendarId) == None:
dbCalendar.create(dbCalendar, current_user.id, calendar.calendarId, calendar.summary, calendar.color)
print("updated Calendars")
# Save credentials back to session in case access token was refreshed.
# ACTION ITEM: In a production app, you likely want to save these
# credentials in a persistent database instead.
flask.session['credentials'] = credentials_to_dict(credentials)
def credentials_to_dict(credentials):
return {'token': credentials.token,
'refresh_token': credentials.refresh_token,
'token_uri': credentials.token_uri,
'client_id': credentials.client_id,
'client_secret': credentials.client_secret,
'scopes': credentials.scopes}

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from flask_login import UserMixin
from server import login_manager, db
@login_manager.user_loader
def load_user(id):
return User.query.get(id)
class User(UserMixin, db.Model):
id = db.Column(db.String(21), primary_key=True)
username = db.Column(db.String(64), index=True, unique=True)
email = db.Column(db.String(120), index=True, unique=True)
profile_pic = db.Column(db.String(256))
password_hash = db.Column(db.String(128))
def __repr__(self):
return '<User {}>'.format(self.username)
class Calendar(db.Model):
usr_id = db.Column(db.String(21), index=True)
calendar_id = db.Column(db.String(256), primary_key=True)
name = db.Column(db.String(256), index=True)
toggle = db.Column(db.String(8))
color = db.Column(db.String(16))
def getCalendars(self, user_id):
calendars = self.query.filter(Calendar.usr_id==user_id)
return calendars
def getCalendar(self, user_id, calendar_id):
calendars = self.query.filter(self.usr_id==user_id, self.calendar_id==calendar_id)
calendar = None
for c in calendars:
calendar = c
if not calendar:
return None
return calendar
@staticmethod
def updateCalendar(user_id, calendar_name, toggle=None, color=None):
calendar = Calendar.query.filter(Calendar.usr_id==user_id, Calendar.name==calendar_name).first()
print("updating")
if(toggle != None):
print(toggle)
calendar.toggle = toggle
db.session.commit()
if(color != None):
calendar.color = color
db.session.commit()
def create(self, user_id, calendar_id, name, color, toggle = 'True'):
newcal = Calendar(usr_id=user_id, calendar_id=calendar_id, name=name, toggle=toggle, color=color)
db.session.add(newcal)
db.session.commit()

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# Python standard libraries
import json
import os
import sqlite3
# Third-party libraries
import flask
from flask import Flask, redirect, request, url_for
from flask_login import (
LoginManager,
current_user,
login_required,
login_user,
logout_user,
)
import requests
import server.googleHandler as google
from server import login_manager, app, db
from server.models import User, Calendar
@app.route("/")
def account():
return flask.redirect('account')
@app.route("/account")
def index():
if current_user.is_authenticated:
google.updateCalendars()
return (flask.render_template('account.html',
username = current_user.username, email = current_user.email, profile_img=current_user.profile_pic
)
)
else:
return flask.render_template('login.html')
@app.route("/calendar")
@login_required
def calendar():
calendars = google.calendarsFromDb()
return flask.render_template('calendar.html', calendars=calendars)
@app.route("/login/google")
def login():
authorization_url = google.login()
return flask.redirect(authorization_url)
@app.route("/login/google/callback")
def callback():
session = google.verifyResponse()
userinfo = session.get('https://www.googleapis.com/userinfo/v2/me').json()
# Create a user in your db with the information provided
# by Google
# Doesn't exist? Add it to the database.
if not User.query.get(userinfo['id']):
newser = User(
id=userinfo['id'],
username=userinfo['name'],
email=userinfo['email'],
profile_pic=userinfo['picture'],
password_hash=""
)
db.session.add(newser)
db.session.commit()
user = User.query.get(userinfo['id'])
# Begin user session by logging the user in
print("login:" + user.id)
login_user(user)
return flask.redirect(flask.url_for('index'))
@app.route("/logout")
@login_required
def logout():
logout_user()
return redirect(url_for("index"))
def credentials_to_dict(credentials):
return {'token': credentials.token,
'refresh_token': credentials.refresh_token,
'token_uri': credentials.token_uri,
'client_id': credentials.client_id,
'client_secret': credentials.client_secret,
'scopes': credentials.scopes}
@app.route("/userinfo/<path:user>/calendarevents.json")
def downloader(user):
print(user)
path = "/home/raphael/dev/website_ws/website/userinfo/" + user
return flask.send_from_directory(path, "calendarevents.json")
# POST
@app.route('/calendar', methods = ['POST', 'DELETE'])
@login_required
def user():
if request.method == 'POST':
calName = request.json.get('calendar_id')
color = request.json.get('color')
toggle = request.json.get('toggle')
if color != None:
Calendar.updateCalendar(current_user.id, calName, color=color)
if toggle != None:
Calendar.updateCalendar(current_user.id, calName, toggle=toggle)
# toggle specific calendar of user
elif request.method == 'DELETE':
# do nothing
return 'NONE'
else:
# POST Error 405
print("405")
return 'OK'