import pytest
import time
import jwt
from datetime import datetime, timezone
from fastapi.requests import Request
from fastapi.responses import RedirectResponse
from unittest.mock import MagicMock, patch

from litellm.proxy.management_helpers.ui_session_handler import UISessionHandler
from litellm.proxy._types import LitellmUserRoles


class TestUISessionHandler:

    def test_get_latest_ui_cookie_name(self):
        # Test with multiple cookies
        cookies = {
            "litellm_ui_token_1000": "value1",
            "litellm_ui_token_2000": "value2",
            "other_cookie": "other_value",
        }

        result = UISessionHandler._get_latest_ui_cookie_name(cookies)
        assert result == "litellm_ui_token_2000"

        # Test with no matching cookies
        cookies = {"other_cookie": "value"}
        result = UISessionHandler._get_latest_ui_cookie_name(cookies)
        assert result is None

    def test_get_ui_session_token_from_cookies(self):
        # Create mock request with cookies
        mock_request = MagicMock()
        mock_request.cookies = {
            "litellm_ui_token_1000": "test_token",
            "other_cookie": "other_value",
        }

        result = UISessionHandler._get_ui_session_token_from_cookies(mock_request)
        assert result == "test_token"

        # Test with no matching cookies
        mock_request.cookies = {"other_cookie": "value"}
        result = UISessionHandler._get_ui_session_token_from_cookies(mock_request)
        assert result is None

    @patch("litellm.proxy.proxy_server.master_key", "test_master_key")
    @patch(
        "litellm.proxy.proxy_server.general_settings",
        {"litellm_key_header_name": "X-API-Key"},
    )
    def test_build_authenticated_ui_jwt_token(self):
        # Test token generation
        token = UISessionHandler.build_authenticated_ui_jwt_token(
            user_id="test_user",
            user_role=LitellmUserRoles.PROXY_ADMIN,
            user_email="test@example.com",
            premium_user=True,
            disabled_non_admin_personal_key_creation=False,
            login_method="username_password",
        )

        # Decode and verify token
        decoded = jwt.decode(token, "test_master_key", algorithms=["HS256"])

        assert decoded["user_id"] == "test_user"
        assert decoded["user_email"] == "test@example.com"
        assert decoded["user_role"] == LitellmUserRoles.PROXY_ADMIN
        assert decoded["premium_user"] is True
        assert decoded["login_method"] == "username_password"
        assert decoded["auth_header_name"] == "X-API-Key"
        assert decoded["iss"] == "litellm-proxy"
        assert decoded["aud"] == "litellm-ui"
        assert "exp" in decoded
        assert decoded["disabled_non_admin_personal_key_creation"] is False
        assert decoded["scope"] == ["litellm:admin"]

    def test_is_ui_session_token(self):
        # Valid UI session token
        token_dict = {
            "iss": "litellm-proxy",
            "aud": "litellm-ui",
            "user_id": "test_user",
        }
        assert UISessionHandler.is_ui_session_token(token_dict) is True

        # Invalid token (wrong issuer)
        token_dict = {
            "iss": "other-issuer",
            "aud": "litellm-ui",
        }
        assert UISessionHandler.is_ui_session_token(token_dict) is False

        # Invalid token (wrong audience)
        token_dict = {
            "iss": "litellm-proxy",
            "aud": "other-audience",
        }
        assert UISessionHandler.is_ui_session_token(token_dict) is False

    def test_generate_authenticated_redirect_response(self):
        redirect_url = "https://example.com/dashboard"
        jwt_token = "test.jwt.token"

        response = UISessionHandler.generate_authenticated_redirect_response(
            redirect_url=redirect_url, jwt_token=jwt_token
        )

        assert isinstance(response, RedirectResponse)
        assert response.status_code == 303
        assert response.headers["location"] == redirect_url

        # Check cookie was set
        cookie_header = response.headers.get("set-cookie", "")
        assert "test.jwt.token" in cookie_header
        assert "Secure" in cookie_header
        assert "HttpOnly" in cookie_header
        assert "SameSite=strict" in cookie_header

    def test_generate_token_name(self):
        # Mock time.time() to return a fixed value
        with patch("time.time", return_value=1234567890):
            token_name = UISessionHandler._generate_token_name()
            assert token_name == "litellm_ui_token_1234567890"