import datetime
import uuid

import pytest
from sqlalchemy.exc import IntegrityError, SQLAlchemyError

from app import db
from app.dao.organization_dao import (
    dao_add_service_to_organization,
    dao_add_user_to_organization,
    dao_get_organization_by_email_address,
    dao_get_organization_by_id,
    dao_get_organization_by_service_id,
    dao_get_organization_services,
    dao_get_organizations,
    dao_get_users_for_organization,
    dao_update_organization,
)
from app.models import Organization, Service
from tests.app.db import (
    create_domain,
    create_email_branding,
    create_organization,
    create_service,
    create_user,
)


def test_get_organizations_gets_all_organizations_alphabetically_with_active_organizations_first(
        notify_db_session
):
    m_active_org = create_organization(name='m_active_organization')
    z_inactive_org = create_organization(name='z_inactive_organization', active=False)
    a_inactive_org = create_organization(name='a_inactive_organization', active=False)
    z_active_org = create_organization(name='z_active_organization')
    a_active_org = create_organization(name='a_active_organization')

    organizations = dao_get_organizations()

    assert len(organizations) == 5
    assert organizations[0] == a_active_org
    assert organizations[1] == m_active_org
    assert organizations[2] == z_active_org
    assert organizations[3] == a_inactive_org
    assert organizations[4] == z_inactive_org


def test_get_organization_by_id_gets_correct_organization(notify_db_session):
    organization = create_organization()

    organization_from_db = dao_get_organization_by_id(organization.id)

    assert organization_from_db == organization


def test_update_organization(notify_db_session):
    create_organization()

    organization = Organization.query.one()
    user = create_user()
    email_branding = create_email_branding()

    data = {
        'name': 'new name',
        "organization_type": 'state',
        "agreement_signed": True,
        "agreement_signed_at": datetime.datetime.utcnow(),
        "agreement_signed_by_id": user.id,
        "agreement_signed_version": 999.99,
        "email_branding_id": email_branding.id,
    }

    for attribute, value in data.items():
        assert getattr(organization, attribute) != value

    assert organization.updated_at is None

    dao_update_organization(organization.id, **data)

    organization = Organization.query.one()

    for attribute, value in data.items():
        assert getattr(organization, attribute) == value

    assert organization.updated_at


@pytest.mark.parametrize('domain_list, expected_domains', (
    (['abc', 'def'], {'abc', 'def'}),
    (['ABC', 'DEF'], {'abc', 'def'}),
    ([], set()),
    (None, {'123', '456'}),
))
def test_update_organization_domains_lowercases(
    notify_db_session,
    domain_list,
    expected_domains,
):
    create_organization()

    organization = Organization.query.one()

    # Seed some domains
    dao_update_organization(organization.id, domains=['123', '456'])

    # This should overwrite the seeded domains
    dao_update_organization(organization.id, domains=domain_list)

    assert {domain.domain for domain in organization.domains} == expected_domains


@pytest.mark.parametrize('domain_list, expected_domains', (
        (['abc', 'ABC'], {'abc'}),
))
def test_update_organization_domains_lowercases_integrity_error(
    notify_db_session,
    domain_list,
    expected_domains,
):
    create_organization()

    organization = Organization.query.one()

    # Seed some domains
    dao_update_organization(organization.id, domains=['123', '456'])

    with pytest.raises(expected_exception=IntegrityError):

        # This should overwrite the seeded domains
        dao_update_organization(organization.id, domains=domain_list)

        assert {domain.domain for domain in organization.domains} == expected_domains


def test_update_organization_does_not_update_the_service_if_certain_attributes_not_provided(
    sample_service,
    sample_organization,
):
    email_branding = create_email_branding()

    sample_service.organization_type = 'state'
    sample_organization.organization_type = 'federal'
    sample_organization.email_branding = email_branding

    sample_organization.services.append(sample_service)
    db.session.commit()

    assert sample_organization.name == 'sample organization'

    dao_update_organization(sample_organization.id, name='updated org name')

    assert sample_organization.name == 'updated org name'

    assert sample_organization.organization_type == 'federal'
    assert sample_service.organization_type == 'state'

    assert sample_organization.email_branding == email_branding
    assert sample_service.email_branding is None


def test_update_organization_updates_the_service_org_type_if_org_type_is_provided(
    sample_service,
    sample_organization,
):
    sample_service.organization_type = 'state'
    sample_organization.organization_type = 'state'

    sample_organization.services.append(sample_service)
    db.session.commit()

    dao_update_organization(sample_organization.id, organization_type='federal')

    assert sample_organization.organization_type == 'federal'
    assert sample_service.organization_type == 'federal'
    assert Service.get_history_model().query.filter_by(
        id=sample_service.id,
        version=2
    ).one().organization_type == 'federal'


def test_update_organization_updates_the_service_branding_if_branding_is_provided(
    sample_service,
    sample_organization,
):
    email_branding = create_email_branding()

    sample_organization.services.append(sample_service)
    db.session.commit()

    dao_update_organization(sample_organization.id, email_branding_id=email_branding.id)

    assert sample_organization.email_branding == email_branding
    assert sample_service.email_branding == email_branding


def test_update_organization_does_not_override_service_branding(
    sample_service,
    sample_organization,
):
    email_branding = create_email_branding()
    custom_email_branding = create_email_branding(name='custom')

    sample_service.email_branding = custom_email_branding

    sample_organization.services.append(sample_service)
    db.session.commit()

    dao_update_organization(sample_organization.id, email_branding_id=email_branding.id)

    assert sample_organization.email_branding == email_branding
    assert sample_service.email_branding == custom_email_branding


def test_add_service_to_organization(sample_service, sample_organization):
    assert sample_organization.services == []

    sample_service.organization_type = "federal"
    sample_organization.organization_type = "state"

    dao_add_service_to_organization(sample_service, sample_organization.id)

    assert len(sample_organization.services) == 1
    assert sample_organization.services[0].id == sample_service.id

    assert sample_service.organization_type == sample_organization.organization_type
    assert Service.get_history_model().query.filter_by(
        id=sample_service.id,
        version=2
    ).one().organization_type == sample_organization.organization_type
    assert sample_service.organization_id == sample_organization.id


def test_get_organization_services(sample_service, sample_organization):
    another_service = create_service(service_name='service 2')
    another_org = create_organization()

    dao_add_service_to_organization(sample_service, sample_organization.id)
    dao_add_service_to_organization(another_service, sample_organization.id)

    org_services = dao_get_organization_services(sample_organization.id)
    other_org_services = dao_get_organization_services(another_org.id)

    assert [sample_service.name, another_service.name] == sorted([s.name for s in org_services])
    assert not other_org_services


def test_get_organization_by_service_id(sample_service, sample_organization):
    another_service = create_service(service_name='service 2')
    another_org = create_organization()

    dao_add_service_to_organization(sample_service, sample_organization.id)
    dao_add_service_to_organization(another_service, another_org.id)

    organization_1 = dao_get_organization_by_service_id(sample_service.id)
    organization_2 = dao_get_organization_by_service_id(another_service.id)

    assert organization_1 == sample_organization
    assert organization_2 == another_org


def test_dao_get_users_for_organization(sample_organization):
    first = create_user(email='first@invited.com')
    second = create_user(email='another@invited.com')

    dao_add_user_to_organization(organization_id=sample_organization.id, user_id=first.id)
    dao_add_user_to_organization(organization_id=sample_organization.id, user_id=second.id)

    results = dao_get_users_for_organization(organization_id=sample_organization.id)

    assert len(results) == 2
    assert results[0] == first
    assert results[1] == second


def test_dao_get_users_for_organization_returns_empty_list(sample_organization):
    results = dao_get_users_for_organization(organization_id=sample_organization.id)
    assert len(results) == 0


def test_dao_get_users_for_organization_only_returns_active_users(sample_organization):
    first = create_user(email='first@invited.com')
    second = create_user(email='another@invited.com')

    dao_add_user_to_organization(organization_id=sample_organization.id, user_id=first.id)
    dao_add_user_to_organization(organization_id=sample_organization.id, user_id=second.id)

    second.state = 'inactive'

    results = dao_get_users_for_organization(organization_id=sample_organization.id)
    assert len(results) == 1
    assert results[0] == first


def test_add_user_to_organization_returns_user(sample_organization):
    org_user = create_user()
    assert not org_user.organizations

    added_user = dao_add_user_to_organization(organization_id=sample_organization.id, user_id=org_user.id)
    assert len(added_user.organizations) == 1
    assert added_user.organizations[0] == sample_organization


def test_add_user_to_organization_when_user_does_not_exist(sample_organization):
    with pytest.raises(expected_exception=SQLAlchemyError):
        dao_add_user_to_organization(organization_id=sample_organization.id, user_id=uuid.uuid4())


def test_add_user_to_organization_when_organization_does_not_exist(sample_user):
    with pytest.raises(expected_exception=SQLAlchemyError):
        dao_add_user_to_organization(organization_id=uuid.uuid4(), user_id=sample_user.id)


@pytest.mark.parametrize('domain, expected_org', (
    ('unknown.gov.uk', False),
    ('example.gov.uk', True),
))
def test_get_organization_by_email_address(
    domain,
    expected_org,
    notify_db_session
):

    org = create_organization()
    create_domain('example.gov.uk', org.id)
    create_domain('test.gov.uk', org.id)

    another_org = create_organization(name='Another')
    create_domain('cabinet-office.gov.uk', another_org.id)
    create_domain('cabinetoffice.gov.uk', another_org.id)

    found_org = dao_get_organization_by_email_address('test@{}'.format(domain))

    if expected_org:
        assert found_org is org
    else:
        assert found_org is None


def test_get_organization_by_email_address_ignores_gsi_gov_uk(notify_db_session):
    org = create_organization()
    create_domain('example.gov.uk', org.id)

    found_org = dao_get_organization_by_email_address('test_gsi_address@example.gsi.gov.uk')
    assert org == found_org