import pytest
from django.test import TestCase
from django.contrib.auth import get_user_model

from commu.usecases.post_service import PostService
from commu.entities.user import UserRole
from core.repositories.django_post_repository import DjangoPostRepository
from core.repositories.django_user_repository import DjangoUserRepository

User = get_user_model()

class PostServiceIntegrationTest(TestCase):

    def setUp(self):
        # Use Django's repositories
        self.user_repo = DjangoUserRepository()
        self.post_repo = DjangoPostRepository()
        self.service = PostService(self.post_repo, self.user_repo)

        # Create some users using Django ORM
        self.admin = User.objects.create_user(username="admin", is_superuser=True, is_staff=True)
        self.user = User.objects.create_user(username="user", is_staff=True)
        self.guest = User.objects.create_user(username="guest")  # Not staff or superuser

    def test_create_post_by_user(self):
        post = self.service.create_post(str(self.user.id), "Hello Django!", ["img1.png"], ["vid1.mp4"])
        assert post.text == "Hello Django!"
        assert post.images == ["img1.png"]
        assert post.videos == ["vid1.mp4"]

    def test_guest_cannot_create_post(self):
        with self.assertRaises(PermissionError):
            self.service.create_post(str(self.guest.id), "Forbidden")

    def test_search_posts(self):
        p1 = self.service.create_post(str(self.user.id), "First Django post")
        p2 = self.service.create_post(str(self.user.id), "Second hello world")
        results = self.service.search_posts("hello")
        assert len(results) == 1
        assert results[0].text == "Second hello world"

    def test_rate_post(self):
        post = self.service.create_post(str(self.user.id), "Rate me Django!")
        self.service.rate_post(post.id, str(self.admin.id), 5)
        self.service.rate_post(post.id, str(self.user.id), 4)
        updated_post = self.post_repo.get(post.id)
        assert abs(updated_post.average_rating() - 4.5) < 1e-6

    def test_guest_cannot_rate_post(self):
        post = self.service.create_post(str(self.user.id), "No guest rate")
        with self.assertRaises(PermissionError):
            self.service.rate_post(post.id, str(self.guest.id), 2)

    def test_rating_bounds(self):
        post = self.service.create_post(str(self.user.id), "Bounds Django")
        with self.assertRaises(ValueError):
            self.service.rate_post(post.id, str(self.admin.id), 0)
        with self.assertRaises(ValueError):
            self.service.rate_post(post.id, str(self.admin.id), 6)