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actions.py
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actions.py
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import datetime
from typing import List
import pandas as pd
from flask import url_for, render_template
import cal
import models
import weather
import geo
import auth
import preferences
from flask_mail import Mail
from auth import generate_confirmation_token
from preferences import DefaultPreferences
mail = Mail()
def get_forecast_for_tomorrow_from_db(location: models.Location, to_pandas=True):
today = datetime.datetime.now()
forecasts = models.Forecast.query.filter(models.Forecast.weather_timestamp > today,
models.Forecast.location_id == location.id)
if to_pandas:
output = pd.read_sql(forecasts.statement, forecasts.session.bind)
else:
output = forecasts.all()
return output
def add_tomorrows_forecast_to_db(location: models.Location):
forecast = weather.DarkSky()
hourly_forecast = forecast.get_forecast_tomorrow(location.longitude, location.latitude)
for row in hourly_forecast.to_dict('records'):
row['location_id'] = location.id
forecast = models.Forecast(**row)
models.db.session.add(forecast)
models.db.session.commit()
def update_preferences_for_user_from_form(user_email: str, form):
#TODO lots of unecessary retrieval of user row from emails here, remove
user = get_user(user_email)
prefs = add_or_return_user_preferences(user_email)
prefs.day_start = form.day_start.data
prefs.day_end = form.day_end.data
prefs.temperature = form.temperature.data
prefs.activities = [add_or_return_activity(activity) for activity in form.activities.data]
models.db.session.add(user)
models.db.session.commit()
return user
def add_new_user_to_db_with_default_preferences(email, location):
user = add_or_return_user(email, location)
prefs = create_default_preference_row()
prefs.user_id = user.id
models.db.session.add(prefs)
models.db.session.commit()
return user
def register_new_user(email: str, place: str):
print(f"Received new user signup for {email} and {place}")
location = add_or_return_location(place)
duplicate_user = False
user = models.User.query.filter_by(email=email).first()
if user is None:
user = add_new_user_to_db_with_default_preferences(email, location)
else:
duplicate_user = True
html = compose_verification_email(email)
auth.send_email(email, 'Please confirm your email for Weather Window', html, mail)
print(f'Sent a verification email to {email} for {place}')
return user, duplicate_user
def send_unsubscribe_email(email: str):
user = get_user(email)
if user:
html = compose_unsubscribe_email(email)
auth.send_email(email, 'Unsubscribe from Weather Window', html, mail)
else:
raise ValueError
def send_update_preferences_email(email: str):
user = get_user(email)
if user:
html = compose_update_preferences_email(email)
auth.send_email(email, 'Update preferences for Weather Window', html, mail)
else:
raise ValueError
def retrieve_location_for_user(user: dict):
user_row = models.User.query.filter_by(email=user["email"]).first()
return models.Location.query.filter_by(id=user_row.location.id).first()
def add_or_return_user_preferences(user_email: str):
user_row = get_user(user_email)
prefs = user_row.preferences
if prefs is None:
prefs = create_default_preference_row()
prefs.user_id = user_row.id
models.db.session.add(prefs)
models.db.session.commit()
return prefs
def add_or_return_location(place: str):
location_row = get_location_by_place(place)
if location_row is None:
location = dict(place=place)
location['latitude'], location['longitude'] = geo.get_lat_lon_for_place(location['place'])
location_row = models.Location(**location)
models.db.session.add(location_row)
return location_row
def get_location_by_place(place: str):
return models.Location.query.filter_by(place=place).first()
def get_user(email: str):
return models.User.query.filter_by(email=email).first()
def delete_user(email: str):
with models.db.session.no_autoflush:
user = get_user(email)
models.db.session.delete(user)
# Delete user preferences too to solve non-null constraint
if user.preferences is not None:
models.db.session.delete(user.preferences)
print(f'Deleting user {email} and associated preferences')
models.db.session.commit()
def add_user(email: str, location: models.Location):
user_row = models.User(email=email, location=location, registered=datetime.datetime.now())
models.db.session.add(user_row)
models.db.session.commit()
return user_row
def add_activity(activity_name: str):
activity_row = models.Activity(name=activity_name)
models.db.session.add(activity_row)
models.db.session.commit()
return activity_row
def add_or_return_activity(activity_name: str):
activity_row = models.Activity.query.filter_by(name=activity_name).first()
if activity_row is None:
activity_row = add_activity(activity_name)
return activity_row
def add_or_return_user(email: str, location: models.Location = None):
user_row = models.User.query.filter_by(email=email).first()
if user_row is None:
if location is not None:
user_row = add_user(email, location)
else:
raise ValueError('User not found and no location specified')
return user_row
def set_email_verified(user_row: models.User):
user_row.email_verified = True
models.db.session.add(user_row)
models.db.session.commit()
def update_most_recent_invite(users: List[models.User]):
now = datetime.datetime.now()
for u in users:
u.most_recent_invite = now
models.db.session.add(u)
models.db.session.commit()
def send_tomorrow_window_to_user(user: models.User, host: str = 'localhost'):
calendar = cal.Calendar(host=host)
preferences = weather.convert_db_preferences_to_weather_preferences(user.preferences)
finder = weather.WeatherWindowFinder(preferences=preferences)
location = user.location
# In case it's a new location
add_tomorrows_forecast_to_db(location)
today = datetime.date.today()
if not needs_invite_for_tomorrow(user, today):
print("New user already has an invite, aborting")
return
# Get weather forecast from DB for each of them, format as a dataframe
forecasts_df = get_forecast_for_tomorrow_from_db(location, to_pandas=True)
# Get the best weather for each of them
window = finder.get_weather_window_for_forecast(forecasts_df)
# Generate the calendar invite
timezone = geo.get_timezone_for_lat_lon(location.latitude, location.longitude)
event = cal.get_calendar_event(location, window, attendees=[user.email], timezone=timezone)
calendar.create_event(event)
update_most_recent_invite([user])
def filter_users_who_already_have_invites_for_today(users):
today = datetime.date.today()
users = [u for u in users if needs_invite_for_tomorrow(u, today)]
return users
def needs_invite_for_tomorrow(user: models.User, today):
if user.email == '[email protected]':
return True
if user.most_recent_invite is None:
return True
if user.most_recent_invite.date() == today:
return False
return True
def compose_verification_email(email: str):
token = generate_confirmation_token(email)
confirm_url = url_for('api.confirm_email', token=token, _external=True)
unsubscribe_url = url_for('api.unsubscribe', token=token, _external=True)
html = render_template('emails/activate.html', confirm_url=confirm_url, unsub_url=unsubscribe_url)
return html
def compose_unsubscribe_email(email: str):
token = generate_confirmation_token(email)
unsubscribe_url = url_for('api.unsubscribe', token=token, _external=True)
html = render_template('emails/unsubscribe.html', unsub_url=unsubscribe_url)
return html
def compose_update_preferences_email(email: str):
token = generate_confirmation_token(email)
update_url = url_for('api.preferences', token=token, _external=True)
html = render_template('emails/preferences.html', update_url=update_url)
return html
def create_default_preference_row(preferences=DefaultPreferences):
return models.Preferences(day_start=preferences.day_start,
day_end=preferences.day_end,
temperature=preferences.temperature,
activities=preferences.activities)