"""Pytest configuration for crewAI workspace."""

import base64
from collections.abc import Generator
import gzip
import os
from pathlib import Path
import tempfile
from typing import Any

from dotenv import load_dotenv
import pytest
from vcr.request import Request  # type: ignore[import-untyped]


try:
    import vcr.stubs.httpx_stubs as httpx_stubs  # type: ignore[import-untyped]
except ModuleNotFoundError:
    import vcr.stubs.httpcore_stubs as httpx_stubs  # type: ignore[import-untyped]


env_test_path = Path(__file__).parent / ".env.test"
load_dotenv(env_test_path, override=True)
load_dotenv(override=True)


def _patched_make_vcr_request(httpx_request: Any, **kwargs: Any) -> Any:
    """Patched version of VCR's _make_vcr_request that handles binary content.

    The original implementation fails on binary request bodies (like file uploads)
    because it assumes all content can be decoded as UTF-8.
    """
    raw_body = httpx_request.read()
    try:
        body = raw_body.decode("utf-8")
    except UnicodeDecodeError:
        body = base64.b64encode(raw_body).decode("ascii")
    uri = str(httpx_request.url)
    headers = dict(httpx_request.headers)
    return Request(httpx_request.method, uri, body, headers)


httpx_stubs._make_vcr_request = _patched_make_vcr_request


# Patch the response-side of VCR to fix httpx.ResponseNotRead errors.
# VCR's _from_serialized_response mocks httpx.Response.read(), which prevents
# the response's internal _content attribute from being properly initialized.
# When OpenAI's client (using with_raw_response) accesses response.content,
# httpx raises ResponseNotRead because read() was never actually called.
# This patch ensures _content is explicitly set after response creation.
_original_from_serialized_response = getattr(
    httpx_stubs, "_from_serialized_response", None
)

if _original_from_serialized_response is not None:
    _from_serialized: Any = _original_from_serialized_response

    def _patched_from_serialized_response(
        request: Any, serialized_response: Any, history: Any = None
    ) -> Any:
        """Patched version that ensures response._content is properly set."""
        response = _from_serialized(request, serialized_response, history)
        # Explicitly set _content to avoid ResponseNotRead errors
        # The content was passed to the constructor but the mocked read() prevents
        # proper initialization of the internal state
        body_content = serialized_response.get("body", {}).get("string", b"")
        if isinstance(body_content, str):
            body_content = body_content.encode("utf-8")
        response._content = body_content
        return response

    httpx_stubs._from_serialized_response = _patched_from_serialized_response


@pytest.fixture(autouse=True, scope="function")
def cleanup_event_handlers() -> Generator[None, Any, None]:
    """Clean up event bus handlers after each test to prevent test pollution."""
    yield

    try:
        from crewai.events.event_bus import crewai_event_bus

        with crewai_event_bus._rwlock.w_locked():
            crewai_event_bus._sync_handlers.clear()
            crewai_event_bus._async_handlers.clear()
    except Exception:  # noqa: S110
        pass


@pytest.fixture(autouse=True, scope="function")
def reset_event_state() -> None:
    """Reset event system state before each test for isolation."""
    from crewai.events.base_events import reset_emission_counter
    from crewai.events.event_context import (
        EventContextConfig,
        _event_context_config,
        _event_id_stack,
    )

    reset_emission_counter()
    _event_id_stack.set(())
    _event_context_config.set(EventContextConfig())


@pytest.fixture(autouse=True, scope="function")
def setup_test_environment() -> Generator[None, Any, None]:
    """Setup test environment for crewAI workspace."""
    with tempfile.TemporaryDirectory() as temp_dir:
        storage_dir = Path(temp_dir) / "crewai_test_storage"
        storage_dir.mkdir(parents=True, exist_ok=True)

        if not storage_dir.exists() or not storage_dir.is_dir():
            raise RuntimeError(
                f"Failed to create test storage directory: {storage_dir}"
            )

        try:
            test_file = storage_dir / ".permissions_test"
            test_file.touch()
            test_file.unlink()
        except (OSError, IOError) as e:
            raise RuntimeError(
                f"Test storage directory {storage_dir} is not writable: {e}"
            ) from e

        os.environ["CREWAI_STORAGE_DIR"] = str(storage_dir)
        os.environ["CREWAI_TESTING"] = "true"

        try:
            yield
        finally:
            os.environ.pop("CREWAI_TESTING", "true")
            os.environ.pop("CREWAI_STORAGE_DIR", None)
            os.environ.pop("CREWAI_DISABLE_TELEMETRY", "true")
            os.environ.pop("OTEL_SDK_DISABLED", "true")
            os.environ.pop("OPENAI_BASE_URL", "https://api.openai.com/v1")
            os.environ.pop("OPENAI_API_BASE", "https://api.openai.com/v1")


HEADERS_TO_FILTER = {
    "authorization": "AUTHORIZATION-XXX",
    "content-security-policy": "CSP-FILTERED",
    "cookie": "COOKIE-XXX",
    "set-cookie": "SET-COOKIE-XXX",
    "permissions-policy": "PERMISSIONS-POLICY-XXX",
    "referrer-policy": "REFERRER-POLICY-XXX",
    "strict-transport-security": "STS-XXX",
    "x-content-type-options": "X-CONTENT-TYPE-XXX",
    "x-frame-options": "X-FRAME-OPTIONS-XXX",
    "x-permitted-cross-domain-policies": "X-PERMITTED-XXX",
    "x-request-id": "X-REQUEST-ID-XXX",
    "x-runtime": "X-RUNTIME-XXX",
    "x-xss-protection": "X-XSS-PROTECTION-XXX",
    "x-stainless-arch": "X-STAINLESS-ARCH-XXX",
    "x-stainless-os": "X-STAINLESS-OS-XXX",
    "x-stainless-read-timeout": "X-STAINLESS-READ-TIMEOUT-XXX",
    "cf-ray": "CF-RAY-XXX",
    "etag": "ETAG-XXX",
    "Strict-Transport-Security": "STS-XXX",
    "access-control-expose-headers": "ACCESS-CONTROL-XXX",
    "openai-organization": "OPENAI-ORG-XXX",
    "openai-project": "OPENAI-PROJECT-XXX",
    "x-ratelimit-limit-requests": "X-RATELIMIT-LIMIT-REQUESTS-XXX",
    "x-ratelimit-limit-tokens": "X-RATELIMIT-LIMIT-TOKENS-XXX",
    "x-ratelimit-remaining-requests": "X-RATELIMIT-REMAINING-REQUESTS-XXX",
    "x-ratelimit-remaining-tokens": "X-RATELIMIT-REMAINING-TOKENS-XXX",
    "x-ratelimit-reset-requests": "X-RATELIMIT-RESET-REQUESTS-XXX",
    "x-ratelimit-reset-tokens": "X-RATELIMIT-RESET-TOKENS-XXX",
    "x-goog-api-key": "X-GOOG-API-KEY-XXX",
    "api-key": "X-API-KEY-XXX",
    "User-Agent": "X-USER-AGENT-XXX",
    "apim-request-id:": "X-API-CLIENT-REQUEST-ID-XXX",
    "azureml-model-session": "AZUREML-MODEL-SESSION-XXX",
    "x-ms-client-request-id": "X-MS-CLIENT-REQUEST-ID-XXX",
    "x-ms-region": "X-MS-REGION-XXX",
    "apim-request-id": "APIM-REQUEST-ID-XXX",
    "x-api-key": "X-API-KEY-XXX",
    "anthropic-organization-id": "ANTHROPIC-ORGANIZATION-ID-XXX",
    "request-id": "REQUEST-ID-XXX",
    "anthropic-ratelimit-input-tokens-limit": "ANTHROPIC-RATELIMIT-INPUT-TOKENS-LIMIT-XXX",
    "anthropic-ratelimit-input-tokens-remaining": "ANTHROPIC-RATELIMIT-INPUT-TOKENS-REMAINING-XXX",
    "anthropic-ratelimit-input-tokens-reset": "ANTHROPIC-RATELIMIT-INPUT-TOKENS-RESET-XXX",
    "anthropic-ratelimit-output-tokens-limit": "ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-LIMIT-XXX",
    "anthropic-ratelimit-output-tokens-remaining": "ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-REMAINING-XXX",
    "anthropic-ratelimit-output-tokens-reset": "ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-RESET-XXX",
    "anthropic-ratelimit-tokens-limit": "ANTHROPIC-RATELIMIT-TOKENS-LIMIT-XXX",
    "anthropic-ratelimit-tokens-remaining": "ANTHROPIC-RATELIMIT-TOKENS-REMAINING-XXX",
    "anthropic-ratelimit-tokens-reset": "ANTHROPIC-RATELIMIT-TOKENS-RESET-XXX",
    "x-amz-date": "X-AMZ-DATE-XXX",
    "amz-sdk-invocation-id": "AMZ-SDK-INVOCATION-ID-XXX",
    "accept-encoding": "ACCEPT-ENCODING-XXX",
    "x-amzn-requestid": "X-AMZN-REQUESTID-XXX",
    "x-amzn-RequestId": "X-AMZN-REQUESTID-XXX",
    "x-a2a-notification-token": "X-A2A-NOTIFICATION-TOKEN-XXX",
    "x-a2a-version": "X-A2A-VERSION-XXX",
}


def _filter_request_headers(request: Request) -> Request:  # type: ignore[no-any-unimported]
    """Filter sensitive headers from request before recording."""
    for header_name, replacement in HEADERS_TO_FILTER.items():
        for variant in [header_name, header_name.upper(), header_name.title()]:
            if variant in request.headers:
                request.headers[variant] = [replacement]

    request.method = request.method.upper()

    # Normalize Azure OpenAI endpoints to a consistent placeholder for cassette matching.
    if request.host and request.host.endswith(".openai.azure.com"):
        original_host = request.host
        placeholder_host = "fake-azure-endpoint.openai.azure.com"
        request.uri = request.uri.replace(original_host, placeholder_host)

    return request


def _filter_response_headers(response: dict[str, Any]) -> dict[str, Any] | None:
    """Filter sensitive headers from response before recording.

    Returns None to skip recording responses with empty bodies. This handles
    duplicate recordings caused by OpenAI's stainless client using
    with_raw_response which triggers httpx to re-read the consumed stream.
    """
    body = response.get("body", {}).get("string", "")
    headers = response.get("headers", {})
    content_length = headers.get("content-length", headers.get("Content-Length", []))

    if body == "" or body == b"" or content_length == ["0"]:
        return None

    for encoding_header in ["Content-Encoding", "content-encoding"]:
        if encoding_header in headers:
            encoding = headers.pop(encoding_header)
            if encoding and encoding[0] == "gzip":
                body = response.get("body", {}).get("string", b"")
                if isinstance(body, bytes) and body.startswith(b"\x1f\x8b"):
                    response["body"]["string"] = gzip.decompress(body).decode("utf-8")

    for header_name, replacement in HEADERS_TO_FILTER.items():
        for variant in [header_name, header_name.upper(), header_name.title()]:
            if variant in headers:
                headers[variant] = [replacement]
    return response


@pytest.fixture(scope="module")
def vcr_cassette_dir(request: Any) -> str:
    """Generate cassette directory path based on test module location.

    Organizes cassettes to mirror test directory structure within each package:
    lib/crewai/tests/llms/google/test_google.py -> lib/crewai/tests/cassettes/llms/google/
    lib/crewai-tools/tests/tools/test_search.py -> lib/crewai-tools/tests/cassettes/tools/
    """
    test_file = Path(request.fspath)

    for parent in test_file.parents:
        if (
            parent.name
            in ("crewai", "crewai-tools", "crewai-files", "cli", "crewai-core")
            and parent.parent.name == "lib"
        ):
            package_root = parent
            break
    else:
        package_root = test_file.parent

    tests_root = package_root / "tests"
    test_dir = test_file.parent

    if test_dir != tests_root:
        relative_path = test_dir.relative_to(tests_root)
        cassette_dir = tests_root / "cassettes" / relative_path
    else:
        cassette_dir = tests_root / "cassettes"

    cassette_dir.mkdir(parents=True, exist_ok=True)

    return str(cassette_dir)


@pytest.fixture(scope="module")
def vcr_config(vcr_cassette_dir: str) -> dict[str, Any]:
    """Configure VCR with organized cassette storage."""
    config = {
        "cassette_library_dir": vcr_cassette_dir,
        "record_mode": os.getenv("PYTEST_VCR_RECORD_MODE", "once"),
        "filter_headers": [(k, v) for k, v in HEADERS_TO_FILTER.items()],
        "before_record_request": _filter_request_headers,
        "before_record_response": _filter_response_headers,
        "filter_query_parameters": ["key"],
        "match_on": ["method", "scheme", "host", "port", "path"],
    }

    if os.getenv("GITHUB_ACTIONS") == "true":
        config["record_mode"] = "none"

    return config