"""Тесты модуля проектов: шаблон → Task, прогресс, видимость, permission."""
from __future__ import annotations

import datetime

from django.contrib.auth.models import Permission
from django.contrib.contenttypes.models import ContentType
from django.test import Client, TestCase

from apps.employees.models import Employee
from apps.projects.models import (
    Project, ProjectStep, ProjectStepItem,
    ProjectTemplate, ProjectTemplateStep, ProjectTemplateStepItem,
)
from apps.projects.services import (
    activate_project, create_manual_project, create_project_from_template,
)
from apps.tasks.models import Task
from core.models import Directory, DirectoryType, PortalAccess
from core.test_utils import login_2fa


def _grant_projects(user):
    ct = ContentType.objects.get_for_model(PortalAccess, for_concrete_model=False)
    perm, _ = Permission.objects.get_or_create(
        content_type=ct, codename='access_projects',
        defaults={'name': 'Доступ к разделу: Проекты'},
    )
    user.user_permissions.add(perm)


class ProjectServicesTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        dtype = DirectoryType.objects.create(code='department', name='Відділ')
        cls.dept_it = Directory.objects.create(
            directory_type=dtype, code='it', name='IT',
        )
        cls.dept_hr = Directory.objects.create(
            directory_type=dtype, code='hr', name='HR',
        )
        common = dict(
            mattermost_sync_enabled=False, ad_sync_enabled=False,
            hire_date=datetime.date(2020, 1, 1),
            user_location_type='office',
        )
        cls.owner = Employee.objects.create_user(
            username='proj_owner', department=cls.dept_it, **common,
        )
        cls.head = Employee.objects.create_user(
            username='proj_head', department=cls.dept_it, **common,
        )
        cls.peer = Employee.objects.create_user(
            username='proj_peer', department=cls.dept_it, manager=cls.head, **common,
        )
        # head is manager of peer → department_head heuristic
        cls.outsider = Employee.objects.create_user(
            username='proj_out', department=cls.dept_hr, **common,
        )

        cls.tpl = ProjectTemplate.objects.create(
            name='Открытие аптеки', default_duration_days=90,
        )
        s1 = ProjectTemplateStep.objects.create(
            template=cls.tpl, title='IT', order=0,
            department=cls.dept_it, offset_days=0, duration_days=14,
        )
        ProjectTemplateStepItem.objects.create(
            step=s1, title='Настроить сеть', order=0,
        )
        ProjectTemplateStepItem.objects.create(
            step=s1, title='Установить кассу', order=1,
        )
        s2 = ProjectTemplateStep.objects.create(
            template=cls.tpl, title='HR', order=1,
            department=cls.dept_hr, offset_days=7, duration_days=21,
        )
        ProjectTemplateStepItem.objects.create(
            step=s2, title='Нанять персонал', order=0,
        )

    def test_instantiate_template_creates_steps_and_tasks_on_activate(self):
        project = create_project_from_template(
            template=self.tpl,
            title='Аптека тест',
            owner=self.owner,
            start_date=datetime.date(2026, 1, 1),
        )
        self.assertEqual(project.status, Project.STATUS_DRAFT)
        self.assertEqual(project.steps.count(), 2)
        self.assertEqual(
            ProjectStepItem.objects.filter(step__project=project).count(), 3,
        )
        self.assertEqual(
            ProjectStepItem.objects.filter(step__project=project, task__isnull=False).count(),
            0,
        )

        activate_project(project)
        project.refresh_from_db()
        self.assertEqual(project.status, Project.STATUS_ACTIVE)
        items = list(
            ProjectStepItem.objects.filter(step__project=project).select_related('task')
        )
        self.assertEqual(len(items), 3)
        self.assertTrue(all(i.task_id for i in items))
        self.assertEqual(Task.objects.filter(pk__in=[i.task_id for i in items]).count(), 3)

    def test_progress_and_auto_done(self):
        project = create_project_from_template(
            template=self.tpl, title='P2', owner=self.owner,
        )
        activate_project(project)
        items = list(
            ProjectStepItem.objects.filter(step__project=project).select_related('task')
        )
        self.assertEqual(project.progress_percent, 0)

        for item in items:
            item.task.set_status('done')

        project.refresh_from_db()
        self.assertEqual(project.progress_percent, 100)
        self.assertEqual(project.status, Project.STATUS_DONE)
        for step in project.steps.all():
            self.assertEqual(step.status, ProjectStep.STATUS_DONE)

    def test_for_user_visibility(self):
        project = create_project_from_template(
            template=self.tpl, title='Vis', owner=self.owner,
        )
        activate_project(project)
        self.assertTrue(
            Project.objects.for_user(self.owner).filter(pk=project.pk).exists()
        )
        # peer in IT department of a step
        self.assertTrue(
            Project.objects.for_user(self.peer).filter(pk=project.pk).exists()
        )
        # outsider HR department also has a step
        self.assertTrue(
            Project.objects.for_user(self.outsider).filter(pk=project.pk).exists()
        )
        stranger = Employee.objects.create_user(
            username='stranger',
            mattermost_sync_enabled=False, ad_sync_enabled=False,
            hire_date=datetime.date(2020, 1, 1),
            user_location_type='office',
        )
        self.assertFalse(
            Project.objects.for_user(stranger).filter(pk=project.pk).exists()
        )

    def test_manual_create(self):
        project = create_manual_project(
            title='Ручной',
            owner=self.owner,
            steps=[{
                'title': 'Шаг 1',
                'department_id': self.dept_it.pk,
                'items': [{'title': 'A'}, {'title': 'B'}],
            }],
        )
        self.assertEqual(project.steps.count(), 1)
        self.assertEqual(project.steps.first().items.count(), 2)


class ProjectPortalAccessTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        common = dict(
            mattermost_sync_enabled=False, ad_sync_enabled=False,
            hire_date=datetime.date(2020, 1, 1),
        )
        cls.user = Employee.objects.create_user(username='proj_u', **common)

    def setUp(self):
        self.client = Client()

    def test_list_requires_permission(self):
        login_2fa(self.client, self.user)
        r = self.client.get('/projects/')
        self.assertIn(r.status_code, (302, 403))

        _grant_projects(self.user)
        # clear perm cache
        self.user = Employee.objects.get(pk=self.user.pk)
        login_2fa(self.client, self.user)
        r = self.client.get('/projects/')
        self.assertEqual(r.status_code, 200)