import pytest
from unittest.mock import AsyncMock, patch, MagicMock
from bson import ObjectId
from fastapi import FastAPI
from fastapi.testclient import TestClient

from app.api.v1.organizations import organization_router

# Create an isolated FastAPI app just for this router
app = FastAPI()
app.include_router(organization_router, prefix="/v1/organizations")

mock_org_id = str(ObjectId())

mock_db_org = {
    "_id": ObjectId(mock_org_id),
    "name": "Test Org",
    "description": "Test Description",
    "email_domains": ["test.com"]
}

@pytest.fixture
def mock_org_collection():
    collection_mock = AsyncMock()
    collection_mock.insert_one = AsyncMock()
    collection_mock.update_one = AsyncMock()
    collection_mock.delete_one = AsyncMock()
    collection_mock.find_one = AsyncMock()
    
    cursor_mock = AsyncMock()
    async def async_generator():
        yield mock_db_org
    cursor_mock.__aiter__ = lambda self: async_generator()
    collection_mock.find = MagicMock(return_value=cursor_mock)

    with patch("app.services.organizations.get_async_collection", return_value=collection_mock):
        yield collection_mock

@pytest.fixture
def org_client():
    from app.database.mongodb import get_async_database
    app.dependency_overrides[get_async_database] = lambda: MagicMock()
    with TestClient(app) as client:
        yield client
    app.dependency_overrides.clear()

def test_create_organization(org_client, mock_org_collection):
    mock_insert_result = MagicMock()
    mock_insert_result.inserted_id = ObjectId(mock_org_id)
    mock_org_collection.insert_one.return_value = mock_insert_result
    
    payload = {
        "name": "Test Org",
        "description": "Test Description",
        "email_domains": ["test.com"]
    }
    
    response = org_client.post("/v1/organizations/", json=payload)
    
    assert response.status_code == 200
    data = response.json()
    assert data["status"] is True
    assert data["message"] == "Organization created successfully."
    mock_org_collection.insert_one.assert_called_once()

def test_get_organization(org_client, mock_org_collection):
    mock_org_collection.find_one.return_value = mock_db_org
    
    response = org_client.get(f"/v1/organizations/{mock_org_id}")
    
    assert response.status_code == 200
    data = response.json()
    assert data["status"] is True
    mock_org_collection.find_one.assert_called_once()

def test_list_organizations(org_client, mock_org_collection):
    response = org_client.get("/v1/organizations/")
    
    assert response.status_code == 200
    data = response.json()
    assert data["status"] is True
    assert len(data["data"]) == 1
    mock_org_collection.find.assert_called_once()

def test_update_organization(org_client, mock_org_collection):
    mock_update_result = MagicMock()
    mock_update_result.modified_count = 1
    mock_org_collection.update_one.return_value = mock_update_result
    
    payload = {
        "name": "Updated Org"
    }
    
    response = org_client.put(f"/v1/organizations/{mock_org_id}", json=payload)
    
    assert response.status_code == 200
    data = response.json()
    assert data["status"] is True
    mock_org_collection.update_one.assert_called_once()

def test_delete_organization(org_client, mock_org_collection):
    mock_delete_result = MagicMock()
    mock_delete_result.deleted_count = 1
    mock_org_collection.delete_one.return_value = mock_delete_result
    
    response = org_client.delete(f"/v1/organizations/{mock_org_id}")
    
    assert response.status_code == 200
    data = response.json()
    assert data["status"] is True
    mock_org_collection.delete_one.assert_called_once()