# coding: utf8
import unittest
from unittest.mock import patch

import datetime
import os
import io
import json
import base64

from collections import defaultdict
from time import sleep

from werkzeug.security import generate_password_hash, check_password_hash
from flask import session
from flask_testing import TestCase

from ihatemoney.run import create_app, db, load_configuration
from ihatemoney.manage import GenerateConfig, GeneratePasswordHash, DeleteProject
from ihatemoney import models
from ihatemoney import utils

# Unset configuration file env var if previously set
os.environ.pop("IHATEMONEY_SETTINGS_FILE_PATH", None)

__HERE__ = os.path.dirname(os.path.abspath(__file__))


class BaseTestCase(TestCase):

    SECRET_KEY = "TEST SESSION"

    def create_app(self):
        # Pass the test object as a configuration.
        return create_app(self)

    def setUp(self):
        db.create_all()

    def tearDown(self):
        # clean after testing
        db.session.remove()
        db.drop_all()

    def login(self, project, password=None, test_client=None):
        password = password or project

        return self.client.post(
            "/authenticate",
            data=dict(id=project, password=password),
            follow_redirects=True,
        )

    def post_project(self, name):
        """Create a fake project"""
        # create the project
        self.client.post(
            "/create",
            data={
                "name": name,
                "id": name,
                "password": name,
                "contact_email": "%s@notmyidea.org" % name,
            },
        )

    def create_project(self, name):
        project = models.Project(
            id=name,
            name=str(name),
            password=generate_password_hash(name),
            contact_email="%s@notmyidea.org" % name,
        )
        models.db.session.add(project)
        models.db.session.commit()


class IhatemoneyTestCase(BaseTestCase):
    SQLALCHEMY_DATABASE_URI = "sqlite://"
    TESTING = True
    WTF_CSRF_ENABLED = False  # Simplifies the tests.

    def assertStatus(self, expected, resp, url=""):
        return self.assertEqual(
            expected,
            resp.status_code,
            "%s expected %s, got %s" % (url, expected, resp.status_code),
        )


class ConfigurationTestCase(BaseTestCase):
    def test_default_configuration(self):
        """Test that default settings are loaded when no other configuration file is specified"""
        self.assertFalse(self.app.config["DEBUG"])
        self.assertEqual(
            self.app.config["SQLALCHEMY_DATABASE_URI"], "sqlite:////tmp/ihatemoney.db"
        )
        self.assertFalse(self.app.config["SQLALCHEMY_TRACK_MODIFICATIONS"])
        self.assertEqual(
            self.app.config["MAIL_DEFAULT_SENDER"],
            ("Budget manager", "budget@notmyidea.org"),
        )

    def test_env_var_configuration_file(self):
        """Test that settings are loaded from the specified configuration file"""
        os.environ["IHATEMONEY_SETTINGS_FILE_PATH"] = os.path.join(
            __HERE__, "ihatemoney_envvar.cfg"
        )
        load_configuration(self.app)
        self.assertEqual(self.app.config["SECRET_KEY"], "lalatra")

        # Test that the specified configuration file is loaded
        # even if the default configuration file ihatemoney.cfg exists
        os.environ["IHATEMONEY_SETTINGS_FILE_PATH"] = os.path.join(
            __HERE__, "ihatemoney_envvar.cfg"
        )
        self.app.config.root_path = __HERE__
        load_configuration(self.app)
        self.assertEqual(self.app.config["SECRET_KEY"], "lalatra")

        os.environ.pop("IHATEMONEY_SETTINGS_FILE_PATH", None)

    def test_default_configuration_file(self):
        """Test that settings are loaded from the default configuration file"""
        self.app.config.root_path = __HERE__
        load_configuration(self.app)
        self.assertEqual(self.app.config["SECRET_KEY"], "supersecret")


class BudgetTestCase(IhatemoneyTestCase):
    def test_notifications(self):
        """Test that the notifications are sent, and that email addresses
        are checked properly.
        """
        # sending a message to one person
        with self.app.mail.record_messages() as outbox:

            # create a project
            self.login("raclette")

            self.post_project("raclette")
            self.client.post(
                "/raclette/invite", data={"emails": "alexis@notmyidea.org"}
            )

            self.assertEqual(len(outbox), 2)
            self.assertEqual(outbox[0].recipients, ["raclette@notmyidea.org"])
            self.assertEqual(outbox[1].recipients, ["alexis@notmyidea.org"])

        # sending a message to multiple persons
        with self.app.mail.record_messages() as outbox:
            self.client.post(
                "/raclette/invite",
                data={"emails": "alexis@notmyidea.org, toto@notmyidea.org"},
            )

            # only one message is sent to multiple persons
            self.assertEqual(len(outbox), 1)
            self.assertEqual(
                outbox[0].recipients, ["alexis@notmyidea.org", "toto@notmyidea.org"]
            )

        # mail address checking
        with self.app.mail.record_messages() as outbox:
            response = self.client.post("/raclette/invite", data={"emails": "toto"})
            self.assertEqual(len(outbox), 0)  # no message sent
            self.assertIn("The email toto is not valid", response.data.decode("utf-8"))

        # mixing good and wrong addresses shouldn't send any messages
        with self.app.mail.record_messages() as outbox:
            self.client.post(
                "/raclette/invite", data={"emails": "alexis@notmyidea.org, alexis"}
            )  # not valid

            # only one message is sent to multiple persons
            self.assertEqual(len(outbox), 0)

    def test_invite(self):
        """Test that invitation e-mails are sent properly
        """
        self.login("raclette")
        self.post_project("raclette")
        with self.app.mail.record_messages() as outbox:
            self.client.post("/raclette/invite", data={"emails": "toto@notmyidea.org"})
            self.assertEqual(len(outbox), 1)
            url_start = outbox[0].body.find("You can log in using this link: ") + 32
            url_end = outbox[0].body.find(".\n", url_start)
            url = outbox[0].body[url_start:url_end]
        self.client.get("/exit")
        # Test that we got a valid token
        resp = self.client.get(url, follow_redirects=True)
        self.assertIn(
            'You probably want to <a href="/raclette/members/add"',
            resp.data.decode("utf-8"),
        )
        # Test empty and invalid tokens
        self.client.get("/exit")
        resp = self.client.get("/authenticate")
        self.assertIn("You either provided a bad token", resp.data.decode("utf-8"))
        resp = self.client.get("/authenticate?token=token")
        self.assertIn("You either provided a bad token", resp.data.decode("utf-8"))

    def test_password_reminder(self):
        # test that it is possible to have an email containing the password of a
        # project in case people forget it (and it happens!)

        self.create_project("raclette")

        with self.app.mail.record_messages() as outbox:
            # a nonexisting project should not send an email
            self.client.post("/password-reminder", data={"id": "unexisting"})
            self.assertEqual(len(outbox), 0)

            # a mail should be sent when a project exists
            self.client.post("/password-reminder", data={"id": "raclette"})
            self.assertEqual(len(outbox), 1)
            self.assertIn("raclette", outbox[0].body)
            self.assertIn("raclette@notmyidea.org", outbox[0].recipients)

    def test_password_reset(self):
        # test that a password can be changed using a link sent by mail

        self.create_project("raclette")
        # Get password resetting link from mail
        with self.app.mail.record_messages() as outbox:
            self.client.post("/password-reminder", data={"id": "raclette"})
            self.assertEqual(len(outbox), 1)
            url_start = outbox[0].body.find("You can reset it here: ") + 23
            url_end = outbox[0].body.find(".\n", url_start)
            url = outbox[0].body[url_start:url_end]
        # Test that we got a valid token
        resp = self.client.get(url)
        self.assertIn("Password confirmation</label>", resp.data.decode("utf-8"))
        # Test that password can be changed
        self.client.post(
            url, data={"password": "pass", "password_confirmation": "pass"}
        )
        resp = self.login("raclette", password="pass")
        self.assertIn(
            "<title>Account manager - raclette</title>", resp.data.decode("utf-8")
        )
        # Test empty and null tokens
        resp = self.client.get("/reset-password")
        self.assertIn("No token provided", resp.data.decode("utf-8"))
        resp = self.client.get("/reset-password?token=token")
        self.assertIn("Invalid token", resp.data.decode("utf-8"))

    def test_project_creation(self):
        with self.app.test_client() as c:

            # add a valid project
            c.post(
                "/create",
                data={
                    "name": "The fabulous raclette party",
                    "id": "raclette",
                    "password": "party",
                    "contact_email": "raclette@notmyidea.org",
                },
            )

            # session is updated
            self.assertTrue(session["raclette"])

            # project is created
            self.assertEqual(len(models.Project.query.all()), 1)

            # Add a second project with the same id
            models.Project.query.get("raclette")

            c.post(
                "/create",
                data={
                    "name": "Another raclette party",
                    "id": "raclette",  # already used !
                    "password": "party",
                    "contact_email": "raclette@notmyidea.org",
                },
            )

            # no new project added
            self.assertEqual(len(models.Project.query.all()), 1)

    def test_project_creation_without_public_permissions(self):
        self.app.config["ALLOW_PUBLIC_PROJECT_CREATION"] = False
        with self.app.test_client() as c:
            # add a valid project
            c.post(
                "/create",
                data={
                    "name": "The fabulous raclette party",
                    "id": "raclette",
                    "password": "party",
                    "contact_email": "raclette@notmyidea.org",
                },
            )

            # session is not updated
            self.assertNotIn("raclette", session)

            # project is not created
            self.assertEqual(len(models.Project.query.all()), 0)

    def test_project_creation_with_public_permissions(self):
        self.app.config["ALLOW_PUBLIC_PROJECT_CREATION"] = True
        with self.app.test_client() as c:
            # add a valid project
            c.post(
                "/create",
                data={
                    "name": "The fabulous raclette party",
                    "id": "raclette",
                    "password": "party",
                    "contact_email": "raclette@notmyidea.org",
                },
            )

            # session is updated
            self.assertTrue(session["raclette"])

            # project is created
            self.assertEqual(len(models.Project.query.all()), 1)

    def test_project_deletion(self):

        with self.app.test_client() as c:
            c.post(
                "/create",
                data={
                    "name": "raclette party",
                    "id": "raclette",
                    "password": "party",
                    "contact_email": "raclette@notmyidea.org",
                },
            )

            # project added
            self.assertEqual(len(models.Project.query.all()), 1)

            c.get("/raclette/delete")

            # project removed
            self.assertEqual(len(models.Project.query.all()), 0)

    def test_bill_placeholder(self):
        self.post_project("raclette")
        self.login("raclette")

        result = self.client.get("/raclette/")

        # Empty bill list and no members, should now propose to add members first
        self.assertIn(
            'You probably want to <a href="/raclette/members/add"',
            result.data.decode("utf-8"),
        )

        result = self.client.post("/raclette/members/add", data={"name": "alexis"})

        result = self.client.get("/raclette/")

        # Empty bill with member, list should now propose to add bills
        self.assertIn(
            'You probably want to <a href="/raclette/add"', result.data.decode("utf-8")
        )

    def test_membership(self):
        self.post_project("raclette")
        self.login("raclette")

        # adds a member to this project
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.assertEqual(len(models.Project.query.get("raclette").members), 1)

        # adds him twice
        result = self.client.post("/raclette/members/add", data={"name": "alexis"})

        # should not accept him
        self.assertEqual(len(models.Project.query.get("raclette").members), 1)

        # add fred
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.assertEqual(len(models.Project.query.get("raclette").members), 2)

        # check fred is present in the bills page
        result = self.client.get("/raclette/")
        self.assertIn("fred", result.data.decode("utf-8"))

        # remove fred
        self.client.post(
            "/raclette/members/%s/delete"
            % models.Project.query.get("raclette").members[-1].id
        )

        # as fred is not bound to any bill, he is removed
        self.assertEqual(len(models.Project.query.get("raclette").members), 1)

        # add fred again
        self.client.post("/raclette/members/add", data={"name": "fred"})
        fred_id = models.Project.query.get("raclette").members[-1].id

        # bound him to a bill
        result = self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": fred_id,
                "payed_for": [fred_id],
                "amount": "25",
            },
        )

        # remove fred
        self.client.post("/raclette/members/%s/delete" % fred_id)

        # he is still in the database, but is deactivated
        self.assertEqual(len(models.Project.query.get("raclette").members), 2)
        self.assertEqual(len(models.Project.query.get("raclette").active_members), 1)

        # as fred is now deactivated, check that he is not listed when adding
        # a bill or displaying the balance
        result = self.client.get("/raclette/")
        self.assertNotIn(
            ("/raclette/members/%s/delete" % fred_id), result.data.decode("utf-8")
        )

        result = self.client.get("/raclette/add")
        self.assertNotIn("fred", result.data.decode("utf-8"))

        # adding him again should reactivate him
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.assertEqual(len(models.Project.query.get("raclette").active_members), 2)

        # adding an user with the same name as another user from a different
        # project should not cause any troubles
        self.post_project("randomid")
        self.login("randomid")
        self.client.post("/randomid/members/add", data={"name": "fred"})
        self.assertEqual(len(models.Project.query.get("randomid").active_members), 1)

    def test_person_model(self):
        self.post_project("raclette")
        self.login("raclette")

        # adds a member to this project
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        alexis = models.Project.query.get("raclette").members[-1]

        # should not have any bills
        self.assertFalse(alexis.has_bills())

        # bound him to a bill
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": alexis.id,
                "payed_for": [alexis.id],
                "amount": "25",
            },
        )

        # should have a bill now
        alexis = models.Project.query.get("raclette").members[-1]
        self.assertTrue(alexis.has_bills())

    def test_member_delete_method(self):
        self.post_project("raclette")
        self.login("raclette")

        # adds a member to this project
        self.client.post("/raclette/members/add", data={"name": "alexis"})

        # try to remove the member using GET method
        response = self.client.get("/raclette/members/1/delete")
        self.assertEqual(response.status_code, 405)

        # delete user using POST method
        self.client.post("/raclette/members/1/delete")
        self.assertEqual(len(models.Project.query.get("raclette").active_members), 0)
        # try to delete an user already deleted
        self.client.post("/raclette/members/1/delete")

    def test_demo(self):
        # test that a demo project is created if none is defined
        self.assertEqual([], models.Project.query.all())
        self.client.get("/demo")
        self.assertTrue(models.Project.query.get("demo") is not None)

    def test_deactivated_demo(self):
        self.app.config["ACTIVATE_DEMO_PROJECT"] = False

        # test redirection to the create project form when demo is deactivated
        resp = self.client.get("/demo")
        self.assertIn('<a href="/create?project_id=demo">', resp.data.decode("utf-8"))

    def test_authentication(self):
        # try to authenticate without credentials should redirect
        # to the authentication page
        resp = self.client.post("/authenticate")
        self.assertIn("Authentication", resp.data.decode("utf-8"))

        # raclette that the login / logout process works
        self.create_project("raclette")

        # try to see the project while not being authenticated should redirect
        # to the authentication page
        resp = self.client.get("/raclette", follow_redirects=True)
        self.assertIn("Authentication", resp.data.decode("utf-8"))

        # try to connect with wrong credentials should not work
        with self.app.test_client() as c:
            resp = c.post("/authenticate", data={"id": "raclette", "password": "nope"})

            self.assertIn("Authentication", resp.data.decode("utf-8"))
            self.assertNotIn("raclette", session)

        # try to connect with the right credentials should work
        with self.app.test_client() as c:
            resp = c.post(
                "/authenticate", data={"id": "raclette", "password": "raclette"}
            )

            self.assertNotIn("Authentication", resp.data.decode("utf-8"))
            self.assertIn("raclette", session)
            self.assertTrue(session["raclette"])

            # logout should wipe the session out
            c.get("/exit")
            self.assertNotIn("raclette", session)

        # test that with admin credentials, one can access every project
        self.app.config["ADMIN_PASSWORD"] = generate_password_hash("pass")
        with self.app.test_client() as c:
            resp = c.post("/admin?goto=%2Fraclette", data={"admin_password": "pass"})
            self.assertNotIn("Authentication", resp.data.decode("utf-8"))
            self.assertTrue(session["is_admin"])

    def test_admin_authentication(self):
        self.app.config["ADMIN_PASSWORD"] = generate_password_hash("pass")
        # Disable public project creation so we have an admin endpoint to test
        self.app.config["ALLOW_PUBLIC_PROJECT_CREATION"] = False

        # test the redirection to the authentication page when trying to access admin endpoints
        resp = self.client.get("/create")
        self.assertIn('<a href="/admin?goto=%2Fcreate">', resp.data.decode("utf-8"))

        # test right password
        resp = self.client.post(
            "/admin?goto=%2Fcreate", data={"admin_password": "pass"}
        )
        self.assertIn('<a href="/create">/create</a>', resp.data.decode("utf-8"))

        # test wrong password
        resp = self.client.post(
            "/admin?goto=%2Fcreate", data={"admin_password": "wrong"}
        )
        self.assertNotIn('<a href="/create">/create</a>', resp.data.decode("utf-8"))

        # test empty password
        resp = self.client.post("/admin?goto=%2Fcreate", data={"admin_password": ""})
        self.assertNotIn('<a href="/create">/create</a>', resp.data.decode("utf-8"))

    def test_login_throttler(self):
        self.app.config["ADMIN_PASSWORD"] = generate_password_hash("pass")

        # Activate admin login throttling by authenticating 4 times with a wrong passsword
        self.client.post("/admin?goto=%2Fcreate", data={"admin_password": "wrong"})
        self.client.post("/admin?goto=%2Fcreate", data={"admin_password": "wrong"})
        self.client.post("/admin?goto=%2Fcreate", data={"admin_password": "wrong"})
        resp = self.client.post(
            "/admin?goto=%2Fcreate", data={"admin_password": "wrong"}
        )

        self.assertIn(
            "Too many failed login attempts, please retry later.",
            resp.data.decode("utf-8"),
        )
        # Change throttling delay
        import gc

        for obj in gc.get_objects():
            if isinstance(obj, utils.LoginThrottler):
                obj._delay = 0.005
                break
        # Wait for delay to expire and retry logging in
        sleep(1)
        resp = self.client.post(
            "/admin?goto=%2Fcreate", data={"admin_password": "wrong"}
        )
        self.assertNotIn(
            "Too many failed login attempts, please retry later.",
            resp.data.decode("utf-8"),
        )

    def test_manage_bills(self):
        self.post_project("raclette")

        # add two persons
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "fred"})

        members_ids = [m.id for m in models.Project.query.get("raclette").members]

        # create a bill
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "25",
            },
        )
        models.Project.query.get("raclette")
        bill = models.Bill.query.one()
        self.assertEqual(bill.amount, 25)

        # edit the bill
        self.client.post(
            "/raclette/edit/%s" % bill.id,
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "10",
            },
        )

        bill = models.Bill.query.one()
        self.assertEqual(bill.amount, 10, "bill edition")

        # delete the bill
        self.client.get("/raclette/delete/%s" % bill.id)
        self.assertEqual(0, len(models.Bill.query.all()), "bill deletion")

        # test balance
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "19",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[1],
                "payed_for": members_ids[0],
                "amount": "20",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[1],
                "payed_for": members_ids,
                "amount": "17",
            },
        )

        balance = models.Project.query.get("raclette").balance
        self.assertEqual(set(balance.values()), set([19.0, -19.0]))

        # Bill with negative amount
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-12",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "-25",
            },
        )
        bill = models.Bill.query.filter(models.Bill.date == "2011-08-12")[0]
        self.assertEqual(bill.amount, -25)

        # add a bill with a comma
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-01",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "25,02",
            },
        )
        bill = models.Bill.query.filter(models.Bill.date == "2011-08-01")[0]
        self.assertEqual(bill.amount, 25.02)

    def test_weighted_balance(self):
        self.post_project("raclette")

        # add two persons
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post(
            "/raclette/members/add", data={"name": "freddy familly", "weight": 4}
        )

        members_ids = [m.id for m in models.Project.query.get("raclette").members]

        # test balance
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": members_ids[0],
                "payed_for": members_ids,
                "amount": "10",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "pommes de terre",
                "payer": members_ids[1],
                "payed_for": members_ids,
                "amount": "10",
            },
        )

        balance = models.Project.query.get("raclette").balance
        self.assertEqual(set(balance.values()), set([6, -6]))

    def test_trimmed_members(self):
        self.post_project("raclette")

        # Add two times the same person (with a space at the end).
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "alexis "})
        members = models.Project.query.get("raclette").members

        self.assertEqual(len(members), 1)

    def test_weighted_members_list(self):
        self.post_project("raclette")

        # add two persons
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "tata", "weight": 1})

        resp = self.client.get("/raclette/")
        self.assertIn("extra-info", resp.data.decode("utf-8"))

        self.client.post(
            "/raclette/members/add", data={"name": "freddy familly", "weight": 4}
        )

        resp = self.client.get("/raclette/")
        self.assertNotIn("extra-info", resp.data.decode("utf-8"))

    def test_negative_weight(self):
        self.post_project("raclette")

        # Add one user and edit it to have a negative share
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        resp = self.client.post(
            "/raclette/members/1/edit", data={"name": "alexis", "weight": -1}
        )

        # An error should be generated, and its weight should still be 1.
        self.assertIn('<p class="alert alert-danger">', resp.data.decode("utf-8"))
        self.assertEqual(len(models.Project.query.get("raclette").members), 1)
        self.assertEqual(models.Project.query.get("raclette").members[0].weight, 1)

    def test_rounding(self):
        self.post_project("raclette")

        # add members
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})

        # create bills
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": 1,
                "payed_for": [1, 2, 3],
                "amount": "24.36",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1],
                "amount": "19.12",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "delicatessen",
                "payer": 1,
                "payed_for": [1, 2],
                "amount": "22",
            },
        )

        balance = models.Project.query.get("raclette").balance
        result = {}
        result[models.Project.query.get("raclette").members[0].id] = 8.12
        result[models.Project.query.get("raclette").members[1].id] = 0.0
        result[models.Project.query.get("raclette").members[2].id] = -8.12
        # Since we're using floating point to store currency, we can have some
        # rounding issues that prevent test from working.
        # However, we should obtain the same values as the theoretical ones if we
        # round to 2 decimals, like in the UI.
        for key, value in balance.items():
            self.assertEqual(round(value, 2), result[key])

    def test_edit_project(self):
        # A project should be editable

        self.post_project("raclette")
        new_data = {
            "name": "Super raclette party!",
            "contact_email": "alexis@notmyidea.org",
            "password": "didoudida",
        }

        resp = self.client.post("/raclette/edit", data=new_data, follow_redirects=True)
        self.assertEqual(resp.status_code, 200)
        project = models.Project.query.get("raclette")

        self.assertEqual(project.name, new_data["name"])
        self.assertEqual(project.contact_email, new_data["contact_email"])
        self.assertTrue(check_password_hash(project.password, new_data["password"]))

        # Editing a project with a wrong email address should fail
        new_data["contact_email"] = "wrong_email"

        resp = self.client.post("/raclette/edit", data=new_data, follow_redirects=True)
        self.assertIn("Invalid email address", resp.data.decode("utf-8"))

    def test_dashboard(self):
        # test that the dashboard is deactivated by default
        resp = self.client.post(
            "/admin?goto=%2Fdashboard",
            data={"admin_password": "adminpass"},
            follow_redirects=True,
        )
        self.assertIn('<div class="alert alert-danger">', resp.data.decode("utf-8"))

        # test access to the dashboard when it is activated
        self.app.config["ACTIVATE_ADMIN_DASHBOARD"] = True
        self.app.config["ADMIN_PASSWORD"] = generate_password_hash("adminpass")
        resp = self.client.post(
            "/admin?goto=%2Fdashboard",
            data={"admin_password": "adminpass"},
            follow_redirects=True,
        )
        self.assertIn(
            "<thead><tr><th>Project</th><th>Number of members",
            resp.data.decode("utf-8"),
        )

    def test_statistics_page(self):
        self.post_project("raclette")
        response = self.client.get("/raclette/statistics")
        self.assertEqual(response.status_code, 200)

    def test_statistics(self):
        self.post_project("raclette")

        # add members
        self.client.post("/raclette/members/add", data={"name": "alexis", "weight": 2})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})
        # Add a member with a balance=0 :
        self.client.post("/raclette/members/add", data={"name": "toto"})

        # create bills
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": 1,
                "payed_for": [1, 2, 3],
                "amount": "10.0",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1],
                "amount": "20",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "delicatessen",
                "payer": 1,
                "payed_for": [1, 2],
                "amount": "10",
            },
        )

        response = self.client.get("/raclette/statistics")
        self.assertIn(
            "<td>alexis</td>\n        "
            + "<td>20.00</td>\n        "
            + "<td>31.67</td>\n",
            response.data.decode("utf-8"),
        )
        self.assertIn(
            "<td>fred</td>\n        " + "<td>20.00</td>\n        " + "<td>5.83</td>\n",
            response.data.decode("utf-8"),
        )
        self.assertIn(
            "<td>tata</td>\n        " + "<td>0.00</td>\n        " + "<td>2.50</td>\n",
            response.data.decode("utf-8"),
        )
        self.assertIn(
            "<td>toto</td>\n        " + "<td>0.00</td>\n        " + "<td>0.00</td>\n",
            response.data.decode("utf-8"),
        )

    def test_settle_page(self):
        self.post_project("raclette")
        response = self.client.get("/raclette/settle_bills")
        self.assertEqual(response.status_code, 200)

    def test_settle(self):
        self.post_project("raclette")

        # add members
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})
        # Add a member with a balance=0 :
        self.client.post("/raclette/members/add", data={"name": "toto"})

        # create bills
        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "fromage à raclette",
                "payer": 1,
                "payed_for": [1, 2, 3],
                "amount": "10.0",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1],
                "amount": "20",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2011-08-10",
                "what": "delicatessen",
                "payer": 1,
                "payed_for": [1, 2],
                "amount": "10",
            },
        )
        project = models.Project.query.get("raclette")
        transactions = project.get_transactions_to_settle_bill()
        members = defaultdict(int)
        # We should have the same values between transactions and project balances
        for t in transactions:
            members[t["ower"]] -= t["amount"]
            members[t["receiver"]] += t["amount"]
        balance = models.Project.query.get("raclette").balance
        for m, a in members.items():
            assert abs(a - balance[m.id]) < 0.01
        return

    def test_settle_zero(self):
        self.post_project("raclette")

        # add members
        self.client.post("/raclette/members/add", data={"name": "alexis"})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})

        # create bills
        self.client.post(
            "/raclette/add",
            data={
                "date": "2016-12-31",
                "what": "fromage à raclette",
                "payer": 1,
                "payed_for": [1, 2, 3],
                "amount": "10.0",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2016-12-31",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1, 3],
                "amount": "20",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2017-01-01",
                "what": "refund",
                "payer": 3,
                "payed_for": [2],
                "amount": "13.33",
            },
        )
        project = models.Project.query.get("raclette")
        transactions = project.get_transactions_to_settle_bill()

        # There should not be any zero-amount transfer after rounding
        for t in transactions:
            rounded_amount = round(t["amount"], 2)
            self.assertNotEqual(
                0.0,
                rounded_amount,
                msg="%f is equal to zero after rounding" % t["amount"],
            )

    def test_export(self):
        self.post_project("raclette")

        # add members
        self.client.post("/raclette/members/add", data={"name": "alexis", "weight": 2})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})
        self.client.post("/raclette/members/add", data={"name": "pépé"})

        # create bills
        self.client.post(
            "/raclette/add",
            data={
                "date": "2016-12-31",
                "what": "fromage à raclette",
                "payer": 1,
                "payed_for": [1, 2, 3, 4],
                "amount": "10.0",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2016-12-31",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1, 3],
                "amount": "200",
            },
        )

        self.client.post(
            "/raclette/add",
            data={
                "date": "2017-01-01",
                "what": "refund",
                "payer": 3,
                "payed_for": [2],
                "amount": "13.33",
            },
        )

        # generate json export of bills
        resp = self.client.get("/raclette/export/bills.json")
        expected = [
            {
                "date": "2017-01-01",
                "what": "refund",
                "amount": 13.33,
                "payer_name": "tata",
                "payer_weight": 1.0,
                "owers": ["fred"],
            },
            {
                "date": "2016-12-31",
                "what": "red wine",
                "amount": 200.0,
                "payer_name": "fred",
                "payer_weight": 1.0,
                "owers": ["alexis", "tata"],
            },
            {
                "date": "2016-12-31",
                "what": "fromage \xe0 raclette",
                "amount": 10.0,
                "payer_name": "alexis",
                "payer_weight": 2.0,
                "owers": ["alexis", "fred", "tata", "p\xe9p\xe9"],
            },
        ]
        self.assertEqual(json.loads(resp.data.decode("utf-8")), expected)

        # generate csv export of bills
        resp = self.client.get("/raclette/export/bills.csv")
        expected = [
            "date,what,amount,payer_name,payer_weight,owers",
            "2017-01-01,refund,13.33,tata,1.0,fred",
            '2016-12-31,red wine,200.0,fred,1.0,"alexis, tata"',
            '2016-12-31,fromage à raclette,10.0,alexis,2.0,"alexis, fred, tata, pépé"',
        ]
        received_lines = resp.data.decode("utf-8").split("\n")

        for i, line in enumerate(expected):
            self.assertEqual(
                set(line.split(",")), set(received_lines[i].strip("\r").split(","))
            )

        # generate json export of transactions
        resp = self.client.get("/raclette/export/transactions.json")
        expected = [
            {"amount": 2.00, "receiver": "fred", "ower": "p\xe9p\xe9"},
            {"amount": 55.34, "receiver": "fred", "ower": "tata"},
            {"amount": 127.33, "receiver": "fred", "ower": "alexis"},
        ]

        self.assertEqual(json.loads(resp.data.decode("utf-8")), expected)

        # generate csv export of transactions
        resp = self.client.get("/raclette/export/transactions.csv")

        expected = [
            "amount,receiver,ower",
            "2.0,fred,pépé",
            "55.34,fred,tata",
            "127.33,fred,alexis",
        ]
        received_lines = resp.data.decode("utf-8").split("\n")

        for i, line in enumerate(expected):
            self.assertEqual(
                set(line.split(",")), set(received_lines[i].strip("\r").split(","))
            )

        # wrong export_format should return a 404
        resp = self.client.get("/raclette/export/transactions.wrong")
        self.assertEqual(resp.status_code, 404)

    def test_import_new_project(self):
        # Import JSON in an empty project

        self.post_project("raclette")
        self.login("raclette")

        project = models.Project.query.get("raclette")

        json_to_import = [
            {
                "date": "2017-01-01",
                "what": "refund",
                "amount": 13.33,
                "payer_name": "tata",
                "payer_weight": 1.0,
                "owers": ["fred"],
            },
            {
                "date": "2016-12-31",
                "what": "red wine",
                "amount": 200.0,
                "payer_name": "fred",
                "payer_weight": 1.0,
                "owers": ["alexis", "tata"],
            },
            {
                "date": "2016-12-31",
                "what": "fromage a raclette",
                "amount": 10.0,
                "payer_name": "alexis",
                "payer_weight": 2.0,
                "owers": ["alexis", "fred", "tata", "pepe"],
            },
        ]

        from ihatemoney.web import import_project

        file = io.StringIO()
        json.dump(json_to_import, file)
        file.seek(0)
        import_project(file, project)

        bills = project.get_pretty_bills()

        # Check if all bills has been add
        self.assertEqual(len(bills), len(json_to_import))

        # Check if name of bills are ok
        b = [e["what"] for e in bills]
        b.sort()
        ref = [e["what"] for e in json_to_import]
        ref.sort()

        self.assertEqual(b, ref)

        # Check if other informations in bill are ok
        for i in json_to_import:
            for j in bills:
                if j["what"] == i["what"]:
                    self.assertEqual(j["payer_name"], i["payer_name"])
                    self.assertEqual(j["amount"], i["amount"])
                    self.assertEqual(j["payer_weight"], i["payer_weight"])
                    self.assertEqual(j["date"], i["date"])

                    list_project = [ower for ower in j["owers"]]
                    list_project.sort()
                    list_json = [ower for ower in i["owers"]]
                    list_json.sort()

                    self.assertEqual(list_project, list_json)

    def test_import_partial_project(self):
        # Import a JSON in a project with already existing data

        self.post_project("raclette")
        self.login("raclette")

        project = models.Project.query.get("raclette")

        self.client.post("/raclette/members/add", data={"name": "alexis", "weight": 2})
        self.client.post("/raclette/members/add", data={"name": "fred"})
        self.client.post("/raclette/members/add", data={"name": "tata"})
        self.client.post(
            "/raclette/add",
            data={
                "date": "2016-12-31",
                "what": "red wine",
                "payer": 2,
                "payed_for": [1, 3],
                "amount": "200",
            },
        )

        json_to_import = [
            {
                "date": "2017-01-01",
                "what": "refund",
                "amount": 13.33,
                "payer_name": "tata",
                "payer_weight": 1.0,
                "owers": ["fred"],
            },
            {  # This expense does not have to be present twice.
                "date": "2016-12-31",
                "what": "red wine",
                "amount": 200.0,
                "payer_name": "fred",
                "payer_weight": 1.0,
                "owers": ["alexis", "tata"],
            },
            {
                "date": "2016-12-31",
                "what": "fromage a raclette",
                "amount": 10.0,
                "payer_name": "alexis",
                "payer_weight": 2.0,
                "owers": ["alexis", "fred", "tata", "pepe"],
            },
        ]

        from ihatemoney.web import import_project

        file = io.StringIO()
        json.dump(json_to_import, file)
        file.seek(0)
        import_project(file, project)

        bills = project.get_pretty_bills()

        # Check if all bills has been add
        self.assertEqual(len(bills), len(json_to_import))

        # Check if name of bills are ok
        b = [e["what"] for e in bills]
        b.sort()
        ref = [e["what"] for e in json_to_import]
        ref.sort()

        self.assertEqual(b, ref)

        # Check if other informations in bill are ok
        for i in json_to_import:
            for j in bills:
                if j["what"] == i["what"]:
                    self.assertEqual(j["payer_name"], i["payer_name"])
                    self.assertEqual(j["amount"], i["amount"])
                    self.assertEqual(j["payer_weight"], i["payer_weight"])
                    self.assertEqual(j["date"], i["date"])

                    list_project = [ower for ower in j["owers"]]
                    list_project.sort()
                    list_json = [ower for ower in i["owers"]]
                    list_json.sort()

                    self.assertEqual(list_project, list_json)

    def test_import_wrong_json(self):
        self.post_project("raclette")
        self.login("raclette")

        project = models.Project.query.get("raclette")

        json_1 = [
            {  # wrong keys
                "checked": False,
                "dimensions": {"width": 5, "height": 10},
                "id": 1,
                "name": "A green door",
                "price": 12.5,
                "tags": ["home", "green"],
            }
        ]

        json_2 = [
            {  # amount missing
                "date": "2017-01-01",
                "what": "refund",
                "payer_name": "tata",
                "payer_weight": 1.0,
                "owers": ["fred"],
            }
        ]

        from ihatemoney.web import import_project

        try:
            file = io.StringIO()
            json.dump(json_1, file)
            file.seek(0)
            import_project(file, project)
        except ValueError:
            self.assertTrue(True)
        except Exception:
            self.fail("unexpected exception raised")
        else:
            self.fail("ExpectedException not raised")

        try:
            file = io.StringIO()
            json.dump(json_2, file)
            file.seek(0)
            import_project(file, project)
        except ValueError:
            self.assertTrue(True)
        except Exception:
            self.fail("unexpected exception raised")
        else:
            self.fail("ExpectedException not raised")


class APITestCase(IhatemoneyTestCase):

    """Tests the API"""

    def api_create(self, name, id=None, password=None, contact=None):
        id = id or name
        password = password or name
        contact = contact or "%s@notmyidea.org" % name

        return self.client.post(
            "/api/projects",
            data={
                "name": name,
                "id": id,
                "password": password,
                "contact_email": contact,
            },
        )

    def api_add_member(self, project, name, weight=1):
        self.client.post(
            "/api/projects/%s/members" % project,
            data={"name": name, "weight": weight},
            headers=self.get_auth(project),
        )

    def get_auth(self, username, password=None):
        password = password or username
        base64string = (
            base64.encodebytes(("%s:%s" % (username, password)).encode("utf-8"))
            .decode("utf-8")
            .replace("\n", "")
        )
        return {"Authorization": "Basic %s" % base64string}

    def test_cors_requests(self):
        # Create a project and test that CORS headers are present if requested.
        resp = self.api_create("raclette")
        self.assertStatus(201, resp)

        # Try to do an OPTIONS requests and see if the headers are correct.
        resp = self.client.options(
            "/api/projects/raclette", headers=self.get_auth("raclette")
        )
        self.assertEqual(resp.headers["Access-Control-Allow-Origin"], "*")

    def test_basic_auth(self):
        # create a project
        resp = self.api_create("raclette")
        self.assertStatus(201, resp)

        # try to do something on it being unauth should return a 401
        resp = self.client.get("/api/projects/raclette")
        self.assertStatus(401, resp)

        # PUT / POST / DELETE / GET on the different resources
        # should also return a 401
        for verb in ("post",):
            for resource in ("/raclette/members", "/raclette/bills"):
                url = "/api/projects" + resource
                self.assertStatus(401, getattr(self.client, verb)(url), verb + resource)

        for verb in ("get", "delete", "put"):
            for resource in ("/raclette", "/raclette/members/1", "/raclette/bills/1"):
                url = "/api/projects" + resource

                self.assertStatus(401, getattr(self.client, verb)(url), verb + resource)

    def test_project(self):
        # wrong email should return an error
        resp = self.client.post(
            "/api/projects",
            data={
                "name": "raclette",
                "id": "raclette",
                "password": "raclette",
                "contact_email": "not-an-email",
            },
        )

        self.assertTrue(400, resp.status_code)
        self.assertEqual(
            '{"contact_email": ["Invalid email address."]}\n', resp.data.decode("utf-8")
        )

        # create it
        resp = self.api_create("raclette")
        self.assertTrue(201, resp.status_code)

        # create it twice should return a 400
        resp = self.api_create("raclette")

        self.assertTrue(400, resp.status_code)
        self.assertIn("id", json.loads(resp.data.decode("utf-8")))

        # get information about it
        resp = self.client.get(
            "/api/projects/raclette", headers=self.get_auth("raclette")
        )

        self.assertTrue(200, resp.status_code)
        expected = {
            "members": [],
            "name": "raclette",
            "contact_email": "raclette@notmyidea.org",
            "id": "raclette",
        }
        decoded_resp = json.loads(resp.data.decode("utf-8"))
        self.assertDictEqual(decoded_resp, expected)

        # edit should work
        resp = self.client.put(
            "/api/projects/raclette",
            data={
                "contact_email": "yeah@notmyidea.org",
                "password": "raclette",
                "name": "The raclette party",
            },
            headers=self.get_auth("raclette"),
        )

        self.assertEqual(200, resp.status_code)

        resp = self.client.get(
            "/api/projects/raclette", headers=self.get_auth("raclette")
        )

        self.assertEqual(200, resp.status_code)
        expected = {
            "name": "The raclette party",
            "contact_email": "yeah@notmyidea.org",
            "members": [],
            "id": "raclette",
        }
        decoded_resp = json.loads(resp.data.decode("utf-8"))
        self.assertDictEqual(decoded_resp, expected)

        # password change is possible via API
        resp = self.client.put(
            "/api/projects/raclette",
            data={
                "contact_email": "yeah@notmyidea.org",
                "password": "tartiflette",
                "name": "The raclette party",
            },
            headers=self.get_auth("raclette"),
        )

        self.assertEqual(200, resp.status_code)

        resp = self.client.get(
            "/api/projects/raclette", headers=self.get_auth("raclette", "tartiflette")
        )
        self.assertEqual(200, resp.status_code)

        # delete should work
        resp = self.client.delete(
            "/api/projects/raclette", headers=self.get_auth("raclette", "tartiflette")
        )

        # get should return a 401 on an unknown resource
        resp = self.client.get(
            "/api/projects/raclette", headers=self.get_auth("raclette")
        )
        self.assertEqual(401, resp.status_code)

    def test_token_creation(self):
        """Test that token of project is generated
        """

        # Create project
        resp = self.api_create("raclette")
        self.assertTrue(201, resp.status_code)

        # Get token
        resp = self.client.get(
            "/api/projects/raclette/token", headers=self.get_auth("raclette")
        )

        self.assertEqual(200, resp.status_code)

        decoded_resp = json.loads(resp.data.decode("utf-8"))

        # Access with token
        resp = self.client.get(
            "/api/projects/raclette/token",
            headers={"Authorization": "Basic %s" % decoded_resp["token"]},
        )

        self.assertEqual(200, resp.status_code)

    def test_token_login(self):
        resp = self.api_create("raclette")
        # Get token
        resp = self.client.get(
            "/api/projects/raclette/token", headers=self.get_auth("raclette")
        )
        decoded_resp = json.loads(resp.data.decode("utf-8"))
        resp = self.client.get("/authenticate?token={}".format(decoded_resp["token"]))
        # Test that we are redirected.
        self.assertEqual(302, resp.status_code)

    def test_member(self):
        # create a project
        self.api_create("raclette")

        # get the list of members (should be empty)
        req = self.client.get(
            "/api/projects/raclette/members", headers=self.get_auth("raclette")
        )

        self.assertStatus(200, req)
        self.assertEqual("[]\n", req.data.decode("utf-8"))

        # add a member
        req = self.client.post(
            "/api/projects/raclette/members",
            data={"name": "Alexis"},
            headers=self.get_auth("raclette"),
        )

        # the id of the new member should be returned
        self.assertStatus(201, req)
        self.assertEqual("1\n", req.data.decode("utf-8"))

        # the list of members should contain one member
        req = self.client.get(
            "/api/projects/raclette/members", headers=self.get_auth("raclette")
        )

        self.assertStatus(200, req)
        self.assertEqual(len(json.loads(req.data.decode("utf-8"))), 1)

        # Try to add another member with the same name.
        req = self.client.post(
            "/api/projects/raclette/members",
            data={"name": "Alexis"},
            headers=self.get_auth("raclette"),
        )
        self.assertStatus(400, req)

        # edit the member
        req = self.client.put(
            "/api/projects/raclette/members/1",
            data={"name": "Fred", "weight": 2},
            headers=self.get_auth("raclette"),
        )

        self.assertStatus(200, req)

        # get should return the new name
        req = self.client.get(
            "/api/projects/raclette/members/1", headers=self.get_auth("raclette")
        )

        self.assertStatus(200, req)
        self.assertEqual("Fred", json.loads(req.data.decode("utf-8"))["name"])
        self.assertEqual(2, json.loads(req.data.decode("utf-8"))["weight"])

        # edit this member with same information
        # (test PUT idemopotence)
        req = self.client.put(
            "/api/projects/raclette/members/1",
            data={"name": "Fred"},
            headers=self.get_auth("raclette"),
        )

        self.assertStatus(200, req)

        # de-activate the user
        req = self.client.put(
            "/api/projects/raclette/members/1",
            data={"name": "Fred", "activated": False},
            headers=self.get_auth("raclette"),
        )
        self.assertStatus(200, req)

        req = self.client.get(
            "/api/projects/raclette/members/1", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)
        self.assertEqual(False, json.loads(req.data.decode("utf-8"))["activated"])

        # re-activate the user
        req = self.client.put(
            "/api/projects/raclette/members/1",
            data={"name": "Fred", "activated": True},
            headers=self.get_auth("raclette"),
        )

        req = self.client.get(
            "/api/projects/raclette/members/1", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)
        self.assertEqual(True, json.loads(req.data.decode("utf-8"))["activated"])

        # delete a member

        req = self.client.delete(
            "/api/projects/raclette/members/1", headers=self.get_auth("raclette")
        )

        self.assertStatus(200, req)

        # the list of members should be empty
        req = self.client.get(
            "/api/projects/raclette/members", headers=self.get_auth("raclette")
        )

        self.assertStatus(200, req)
        self.assertEqual("[]\n", req.data.decode("utf-8"))

    def test_bills(self):
        # create a project
        self.api_create("raclette")

        # add members
        self.api_add_member("raclette", "alexis")
        self.api_add_member("raclette", "fred")
        self.api_add_member("raclette", "arnaud")

        # get the list of bills (should be empty)
        req = self.client.get(
            "/api/projects/raclette/bills", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)

        self.assertEqual("[]\n", req.data.decode("utf-8"))

        # add a bill
        req = self.client.post(
            "/api/projects/raclette/bills",
            data={
                "date": "2011-08-10",
                "what": "fromage",
                "payer": "1",
                "payed_for": ["1", "2"],
                "amount": "25",
                "external_link": "https://raclette.fr",
            },
            headers=self.get_auth("raclette"),
        )

        # should return the id
        self.assertStatus(201, req)
        self.assertEqual(req.data.decode("utf-8"), "1\n")

        # get this bill details
        req = self.client.get(
            "/api/projects/raclette/bills/1", headers=self.get_auth("raclette")
        )

        # compare with the added info
        self.assertStatus(200, req)
        expected = {
            "what": "fromage",
            "payer_id": 1,
            "owers": [
                {"activated": True, "id": 1, "name": "alexis", "weight": 1},
                {"activated": True, "id": 2, "name": "fred", "weight": 1},
            ],
            "amount": 25.0,
            "date": "2011-08-10",
            "id": 1,
            "external_link": "https://raclette.fr",
        }

        got = json.loads(req.data.decode("utf-8"))
        self.assertEqual(
            datetime.date.today(),
            datetime.datetime.strptime(got["creation_date"], "%Y-%m-%d").date(),
        )
        del got["creation_date"]
        self.assertDictEqual(expected, got)

        # the list of bills should length 1
        req = self.client.get(
            "/api/projects/raclette/bills", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)
        self.assertEqual(1, len(json.loads(req.data.decode("utf-8"))))

        # edit with errors should return an error
        req = self.client.put(
            "/api/projects/raclette/bills/1",
            data={
                "date": "201111111-08-10",  # not a date
                "what": "fromage",
                "payer": "1",
                "payed_for": ["1", "2"],
                "amount": "25",
                "external_link": "https://raclette.fr",
            },
            headers=self.get_auth("raclette"),
        )

        self.assertStatus(400, req)
        self.assertEqual(
            '{"date": ["This field is required."]}\n', req.data.decode("utf-8")
        )

        # edit a bill
        req = self.client.put(
            "/api/projects/raclette/bills/1",
            data={
                "date": "2011-09-10",
                "what": "beer",
                "payer": "2",
                "payed_for": ["1", "2"],
                "amount": "25",
                "external_link": "https://raclette.fr",
            },
            headers=self.get_auth("raclette"),
        )

        # check its fields
        req = self.client.get(
            "/api/projects/raclette/bills/1", headers=self.get_auth("raclette")
        )
        creation_date = datetime.datetime.strptime(
            json.loads(req.data.decode("utf-8"))["creation_date"], "%Y-%m-%d"
        ).date()

        expected = {
            "what": "beer",
            "payer_id": 2,
            "owers": [
                {"activated": True, "id": 1, "name": "alexis", "weight": 1},
                {"activated": True, "id": 2, "name": "fred", "weight": 1},
            ],
            "amount": 25.0,
            "date": "2011-09-10",
            "external_link": "https://raclette.fr",
            "id": 1,
        }

        got = json.loads(req.data.decode("utf-8"))
        self.assertEqual(
            creation_date,
            datetime.datetime.strptime(got["creation_date"], "%Y-%m-%d").date(),
        )
        del got["creation_date"]
        self.assertDictEqual(expected, got)

        # delete a bill
        req = self.client.delete(
            "/api/projects/raclette/bills/1", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)

        # getting it should return a 404
        req = self.client.get(
            "/api/projects/raclette/bills/1", headers=self.get_auth("raclette")
        )
        self.assertStatus(404, req)

    def test_bills_with_calculation(self):
        # create a project
        self.api_create("raclette")

        # add members
        self.api_add_member("raclette", "alexis")
        self.api_add_member("raclette", "fred")

        # valid amounts
        input_expected = [
            ("((100 + 200.25) * 2 - 100) / 2", 250.25),
            ("3/2", 1.5),
            ("2 + 1 * 5 - 2 / 1", 5),
        ]

        for i, pair in enumerate(input_expected):
            input_amount, expected_amount = pair
            id = i + 1

            req = self.client.post(
                "/api/projects/raclette/bills",
                data={
                    "date": "2011-08-10",
                    "what": "fromage",
                    "payer": "1",
                    "payed_for": ["1", "2"],
                    "amount": input_amount,
                },
                headers=self.get_auth("raclette"),
            )

            # should return the id
            self.assertStatus(201, req)
            self.assertEqual(req.data.decode("utf-8"), "{}\n".format(id))

            # get this bill's details
            req = self.client.get(
                "/api/projects/raclette/bills/{}".format(id),
                headers=self.get_auth("raclette"),
            )

            # compare with the added info
            self.assertStatus(200, req)
            expected = {
                "what": "fromage",
                "payer_id": 1,
                "owers": [
                    {"activated": True, "id": 1, "name": "alexis", "weight": 1},
                    {"activated": True, "id": 2, "name": "fred", "weight": 1},
                ],
                "amount": expected_amount,
                "date": "2011-08-10",
                "id": id,
                "external_link": "",
            }

            got = json.loads(req.data.decode("utf-8"))
            self.assertEqual(
                datetime.date.today(),
                datetime.datetime.strptime(got["creation_date"], "%Y-%m-%d").date(),
            )
            del got["creation_date"]
            self.assertDictEqual(expected, got)

        # should raise errors
        erroneous_amounts = [
            "lambda ",  # letters
            "(20 + 2",  # invalid expression
            "20/0",  # invalid calc
            "9999**99999999999999999",  # exponents
            "2" * 201,  # greater than 200 chars,
        ]

        for amount in erroneous_amounts:
            req = self.client.post(
                "/api/projects/raclette/bills",
                data={
                    "date": "2011-08-10",
                    "what": "fromage",
                    "payer": "1",
                    "payed_for": ["1", "2"],
                    "amount": amount,
                },
                headers=self.get_auth("raclette"),
            )
            self.assertStatus(400, req)

    def test_statistics(self):
        # create a project
        self.api_create("raclette")

        # add members
        self.api_add_member("raclette", "alexis")
        self.api_add_member("raclette", "fred")

        # add a bill
        req = self.client.post(
            "/api/projects/raclette/bills",
            data={
                "date": "2011-08-10",
                "what": "fromage",
                "payer": "1",
                "payed_for": ["1", "2"],
                "amount": "25",
            },
            headers=self.get_auth("raclette"),
        )

        # get the list of bills (should be empty)
        req = self.client.get(
            "/api/projects/raclette/statistics", headers=self.get_auth("raclette")
        )
        self.assertStatus(200, req)
        self.assertEqual(
            [
                {
                    "balance": 12.5,
                    "member": {
                        "activated": True,
                        "id": 1,
                        "name": "alexis",
                        "weight": 1.0,
                    },
                    "paid": 25.0,
                    "spent": 12.5,
                },
                {
                    "balance": -12.5,
                    "member": {
                        "activated": True,
                        "id": 2,
                        "name": "fred",
                        "weight": 1.0,
                    },
                    "paid": 0,
                    "spent": 12.5,
                },
            ],
            json.loads(req.data.decode("utf-8")),
        )

    def test_username_xss(self):
        # create a project
        # self.api_create("raclette")
        self.post_project("raclette")
        self.login("raclette")

        # add members
        self.api_add_member("raclette", "<script>")

        result = self.client.get("/raclette/")
        self.assertNotIn("<script>", result.data.decode("utf-8"))

    def test_weighted_bills(self):
        # create a project
        self.api_create("raclette")

        # add members
        self.api_add_member("raclette", "alexis")
        self.api_add_member("raclette", "freddy familly", 4)
        self.api_add_member("raclette", "arnaud")

        # add a bill
        req = self.client.post(
            "/api/projects/raclette/bills",
            data={
                "date": "2011-08-10",
                "what": "fromage",
                "payer": "1",
                "payed_for": ["1", "2"],
                "amount": "25",
            },
            headers=self.get_auth("raclette"),
        )

        # get this bill details
        req = self.client.get(
            "/api/projects/raclette/bills/1", headers=self.get_auth("raclette")
        )
        creation_date = datetime.datetime.strptime(
            json.loads(req.data.decode("utf-8"))["creation_date"], "%Y-%m-%d"
        ).date()

        # compare with the added info
        self.assertStatus(200, req)
        expected = {
            "what": "fromage",
            "payer_id": 1,
            "owers": [
                {"activated": True, "id": 1, "name": "alexis", "weight": 1},
                {"activated": True, "id": 2, "name": "freddy familly", "weight": 4},
            ],
            "amount": 25.0,
            "date": "2011-08-10",
            "id": 1,
            "external_link": "",
        }
        got = json.loads(req.data.decode("utf-8"))
        self.assertEqual(
            creation_date,
            datetime.datetime.strptime(got["creation_date"], "%Y-%m-%d").date(),
        )
        del got["creation_date"]
        self.assertDictEqual(expected, got)

        # getting it should return a 404
        req = self.client.get(
            "/api/projects/raclette", headers=self.get_auth("raclette")
        )

        expected = {
            "members": [
                {
                    "activated": True,
                    "id": 1,
                    "name": "alexis",
                    "weight": 1.0,
                    "balance": 20.0,
                },
                {
                    "activated": True,
                    "id": 2,
                    "name": "freddy familly",
                    "weight": 4.0,
                    "balance": -20.0,
                },
                {
                    "activated": True,
                    "id": 3,
                    "name": "arnaud",
                    "weight": 1.0,
                    "balance": 0,
                },
            ],
            "contact_email": "raclette@notmyidea.org",
            "id": "raclette",
            "name": "raclette",
        }

        self.assertStatus(200, req)
        decoded_req = json.loads(req.data.decode("utf-8"))
        self.assertDictEqual(decoded_req, expected)


class ServerTestCase(IhatemoneyTestCase):
    def test_homepage(self):
        # See https://github.com/spiral-project/ihatemoney/pull/358
        self.app.config["APPLICATION_ROOT"] = "/"
        req = self.client.get("/")
        self.assertStatus(200, req)

    def test_unprefixed(self):
        self.app.config["APPLICATION_ROOT"] = "/"
        req = self.client.get("/foo/")
        self.assertStatus(303, req)

    def test_prefixed(self):
        self.app.config["APPLICATION_ROOT"] = "/foo"
        req = self.client.get("/foo/")
        self.assertStatus(200, req)


class CommandTestCase(BaseTestCase):
    def test_generate_config(self):
        """ Simply checks that all config file generation
        - raise no exception
        - produce something non-empty
        """
        cmd = GenerateConfig()
        for config_file in cmd.get_options()[0].kwargs["choices"]:
            with patch("sys.stdout", new=io.StringIO()) as stdout:
                cmd.run(config_file)
                print(stdout.getvalue())
                self.assertNotEqual(len(stdout.getvalue().strip()), 0)

    def test_generate_password_hash(self):
        cmd = GeneratePasswordHash()
        with patch("sys.stdout", new=io.StringIO()) as stdout, patch(
            "getpass.getpass", new=lambda prompt: "secret"
        ):  # NOQA
            cmd.run()
            print(stdout.getvalue())
            self.assertEqual(len(stdout.getvalue().strip()), 189)

    def test_demo_project_deletion(self):
        self.create_project("demo")
        self.assertEquals(models.Project.query.get("demo").name, "demo")

        cmd = DeleteProject()
        cmd.run("demo")

        self.assertEqual(len(models.Project.query.all()), 0)


if __name__ == "__main__":
    unittest.main()