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from collections import defaultdict
from flask import (Flask, session, request, redirect, url_for, render_template,
flash)
from flaskext.mail import Mail, Message
# local modules
from models import db, Project, Person, Bill
from forms import ProjectForm, AuthenticationForm, BillForm, MemberForm, InviteForm
from utils import get_billform_for, requires_auth
# create the application, initialize stuff
app = Flask(__name__)
app.config.from_object("default_settings")
mail = Mail()
# db
db.init_app(app)
db.app = app
db.create_all()
# mail
mail.init_app(app)
@app.route("/")
def home():
project_form = ProjectForm()
auth_form = AuthenticationForm()
return render_template("home.html", project_form=project_form,
auth_form=auth_form, session=session)
@app.route("/authenticate", methods=["GET", "POST"])
def authenticate(redirect_url=None):
form = AuthenticationForm()
project_id = form.id.data
redirect_url = redirect_url or url_for("list_bills", project_id=project_id)
project = Project.query.get(project_id)
create_project = False # We don't want to create the project by default
if not project:
# But if the user try to connect to an unexisting project, we will
# propose him a link to the creation form.
create_project = project_id
else:
# if credentials are already in session, redirect
if project_id in session and project.password == session[project_id]:
return redirect(redirect_url)
# else process the form
if request.method == "POST":
if form.validate():
if not form.password.data == project.password:
form.errors['password'] = ["The password is not the right one"]
else:
# maintain a list of visited projects
if "projects" not in session:
session["projects"] = []
# add the project on the top of the list
session["projects"].insert(0, (project_id, project.name))
session[project_id] = form.password.data
session.update()
return redirect(redirect_url)
return render_template("authenticate.html", form=form,
create_project=create_project)
@app.route("/create", methods=["GET", "POST"])
def create_project():
form = ProjectForm()
if request.method == "GET" and 'project_id' in request.values:
form.name.data = request.values['project_id']
if request.method == "POST":
if form.validate():
# save the object in the db
project = form.save()
db.session.add(project)
db.session.commit()
# create the session object (authenticate)
session[project.id] = project.password
session.update()
# redirect the user to the next step (invite)
return redirect(url_for("invite", project_id=project.id))
return render_template("create_project.html", form=form)
@app.route("/exit")
def exit():
# delete the session
session.clear()
return redirect(url_for("home"))
@app.route("/<string:project_id>/invite", methods=["GET", "POST"])
@requires_auth
def invite(project):
form = InviteForm()
if request.method == "POST":
if form.validate():
# send the email
message_body = render_template("invitation_mail",
email=project.contact_email, project=project)
message_title = "You have been invited to share your"\
+ " expenses for %s" % project.name
msg = Message(message_title,
body=message_body,
recipients=[email.strip()
for email in form.emails.data.split(",")])
mail.send(msg)
return redirect(url_for("list_bills", project_id=project.id))
return render_template("send_invites.html", form=form, project=project)
@app.route("/<string:project_id>/")
@requires_auth
def list_bills(project):
bills = Bill.query.join(Person, Project)\
.filter(Bill.payer_id == Person.id)\
.filter(Person.project_id == Project.id)\
.filter(Project.id == project.id)\
.order_by(Bill.date.desc())
return render_template("list_bills.html",
bills=bills, project=project,
member_form=MemberForm(project),
bill_form=get_billform_for(project)
)
@app.route("/<string:project_id>/members/add", methods=["GET", "POST"])
@requires_auth
def add_member(project):
# FIXME manage form errors on the list_bills page
form = MemberForm(project)
if request.method == "POST":
if form.validate():
db.session.add(Person(name=form.name.data, project=project))
db.session.commit()
return redirect(url_for("list_bills", project_id=project.id))
return render_template("add_member.html", form=form, project=project)
@app.route("/<string:project_id>/members/<int:member_id>/delete", methods=["GET", "POST"])
@requires_auth
def remove_member(project, member_id):
person = Person.query.get_or_404(member_id)
if person.project == project:
if not person.is_used():
db.session.delete(person)
db.session.commit()
flash("User '%s' has been removed" % person.name)
else:
person.activated = False
db.session.commit()
flash("User '%s' has been desactivated" % person.name)
return redirect(url_for("list_bills", project_id=project.id))
@app.route("/<string:project_id>/add", methods=["GET", "POST"])
@requires_auth
def add_bill(project):
form = get_billform_for(project)
if request.method == 'POST':
if form.validate():
db.session.add(form.save())
db.session.commit()
flash("The bill have been added")
return redirect(url_for('list_bills', project_id=project.id))
return render_template("add_bill.html", form=form, project=project)
@app.route("/<string:project_id>/compute")
@requires_auth
def compute_bills(project):
"""Compute the sum each one have to pay to each other and display it"""
return render_template("compute_bills.html", project=project)
@app.route("/<string:project_id>/reset")
@requires_auth
def reset_bills(project):
"""Reset the list of bills"""
# FIXME replace with the archive feature
# get all the bills which are not processed
bills = Bill.query.filter(Bill.processed == False)
for bill in bills:
bill.processed = True
db.session.commit()
return redirect(url_for('list_bills'))
@app.route("/<string:project_id>/delete/<int:bill_id>")
@requires_auth
def delete_bill(project, bill_id):
Bill.query.filter(Bill.id == bill_id).delete()
BillOwer.query.filter(BillOwer.bill_id == bill_id).delete()
db.session.commit()
flash("the bill was deleted")
return redirect(url_for('list_bills'))
def main():
app.run(host="0.0.0.0", debug=True)
if __name__ == '__main__':
main()
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