# SPDX-FileCopyrightText: 2022-present deepset GmbH <info@deepset.ai>
#
# SPDX-License-Identifier: Apache-2.0

import pytest
import httpx
import requests
from unittest.mock import patch, MagicMock

from haystack.utils.requests_utils import request_with_retry, async_request_with_retry


@pytest.fixture
def mock_requests_response():
    response = MagicMock(spec=requests.Response)
    response.status_code = 200
    response.raise_for_status.return_value = None
    return response


@pytest.fixture
def mock_httpx_response():
    response = MagicMock(spec=httpx.Response)
    response.status_code = 200
    response.raise_for_status.return_value = None
    return response


class TestRequestWithRetry:
    def test_request_with_retry_success(self, mock_requests_response):
        """Test that request_with_retry works with default parameters"""
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="GET", url="https://example.com")

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    def test_request_with_retry_custom_attempts(self, mock_requests_response):
        """Test that request_with_retry respects custom attempts parameter"""
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="GET", url="https://example.com", attempts=5)

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    def test_request_with_retry_custom_status_codes(self, mock_requests_response):
        """Test that request_with_retry respects custom status_codes_to_retry parameter"""
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="GET", url="https://example.com", status_codes_to_retry=[500, 502])

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    def test_request_with_retry_custom_timeout(self, mock_requests_response):
        """Test that request_with_retry respects custom timeout parameter"""
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="GET", url="https://example.com", timeout=30)

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=30)

    def test_request_with_retry_with_headers(self, mock_requests_response):
        """Test that request_with_retry passes headers correctly"""
        headers = {"Authorization": "Bearer token123"}
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="GET", url="https://example.com", headers=headers)

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", headers=headers, timeout=10)

    def test_request_with_retry_with_json(self, mock_requests_response):
        """Test that request_with_retry passes JSON data correctly"""
        json_data = {"key": "value"}
        with patch("requests.request", return_value=mock_requests_response) as mock_request:
            response = request_with_retry(method="POST", url="https://example.com", json=json_data)

            assert response == mock_requests_response
            mock_request.assert_called_once_with(method="POST", url="https://example.com", json=json_data, timeout=10)

    def test_request_with_retry_retries_on_error(self):
        """Test that request_with_retry retries on HTTP errors"""
        error_response = requests.Response()
        error_response.status_code = 503

        success_response = requests.Response()
        success_response.status_code = 200

        with patch("requests.request") as mock_request:
            # First call raises an error, second call succeeds
            mock_request.side_effect = [requests.exceptions.HTTPError("Server error"), success_response]

            response = request_with_retry(method="GET", url="https://example.com", attempts=2)

            assert response == success_response
            assert mock_request.call_count == 2

    def test_request_with_retry_retries_on_status_code(self):
        """Test that request_with_retry retries on specified status codes"""
        error_response = requests.Response()
        error_response.status_code = 503

        def raise_for_status():
            if error_response.status_code in [503]:
                raise requests.exceptions.HTTPError("Service Unavailable")

        error_response.raise_for_status = raise_for_status

        success_response = requests.Response()
        success_response.status_code = 200
        success_response.raise_for_status = lambda: None

        with patch("requests.request") as mock_request:
            # First call returns error status code, second call succeeds
            mock_request.side_effect = [error_response, success_response]

            response = request_with_retry(
                method="GET", url="https://example.com", attempts=2, status_codes_to_retry=[503]
            )

            assert response == success_response
            assert mock_request.call_count == 2


class TestAsyncRequestWithRetry:
    @pytest.mark.asyncio
    async def test_async_request_with_retry_success(self, mock_httpx_response):
        """Test that async_request_with_retry works with default parameters"""
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(method="GET", url="https://example.com")

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_custom_attempts(self, mock_httpx_response):
        """Test that async_request_with_retry respects custom attempts parameter"""
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(method="GET", url="https://example.com", attempts=5)

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_custom_status_codes(self, mock_httpx_response):
        """Test that async_request_with_retry respects custom status_codes_to_retry parameter"""
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(
                method="GET", url="https://example.com", status_codes_to_retry=[500, 502]
            )

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=10)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_custom_timeout(self, mock_httpx_response):
        """Test that async_request_with_retry respects custom timeout parameter"""
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(method="GET", url="https://example.com", timeout=30)

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", timeout=30)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_with_headers(self, mock_httpx_response):
        """Test that async_request_with_retry passes headers correctly"""
        headers = {"Authorization": "Bearer token123"}
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(method="GET", url="https://example.com", headers=headers)

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="GET", url="https://example.com", headers=headers, timeout=10)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_with_json(self, mock_httpx_response):
        """Test that async_request_with_retry passes JSON data correctly"""
        json_data = {"key": "value"}
        with patch("httpx.AsyncClient.request", return_value=mock_httpx_response) as mock_request:
            response = await async_request_with_retry(method="POST", url="https://example.com", json=json_data)

            assert response == mock_httpx_response
            mock_request.assert_called_once_with(method="POST", url="https://example.com", json=json_data, timeout=10)

    @pytest.mark.asyncio
    async def test_async_request_with_retry_retries_on_error(self):
        """Test that async_request_with_retry retries on HTTP errors"""
        error_response = httpx.Response(status_code=503, request=httpx.Request("GET", "https://example.com"))
        success_response = httpx.Response(status_code=200, request=httpx.Request("GET", "https://example.com"))

        with patch("httpx.AsyncClient.request") as mock_request:
            # First call raises an error, second call succeeds
            mock_request.side_effect = [
                httpx.RequestError("Server error", request=httpx.Request("GET", "https://example.com")),
                success_response,
            ]

            response = await async_request_with_retry(method="GET", url="https://example.com", attempts=2)

            assert response == success_response
            assert mock_request.call_count == 2

    @pytest.mark.asyncio
    async def test_async_request_with_retry_retries_on_status_code(self):
        """Test that async_request_with_retry retries on specified status codes"""
        error_response = httpx.Response(status_code=503, request=httpx.Request("GET", "https://example.com"))

        def raise_for_status():
            if error_response.status_code in [503]:
                raise httpx.HTTPStatusError(
                    "Service Unavailable", request=error_response.request, response=error_response
                )

        error_response.raise_for_status = raise_for_status

        success_response = httpx.Response(status_code=200, request=httpx.Request("GET", "https://example.com"))
        success_response.raise_for_status = lambda: None

        with patch("httpx.AsyncClient.request") as mock_request:
            # First call returns error status code, second call succeeds
            mock_request.side_effect = [error_response, success_response]

            response = await async_request_with_retry(
                method="GET", url="https://example.com", attempts=2, status_codes_to_retry=[503]
            )

            assert response == success_response
            assert mock_request.call_count == 2