"""Base HTTP client for integration testing."""
import json
import logging

logger = logging.getLogger(__name__)


class ApiError(Exception):
    """Detailed exception for API call failures.

    Attributes:
        message: Human-readable error message from the API.
        status_code: HTTP status code returned.
        error_type: Machine-readable error type string (e.g. VALIDATION_ERROR).
        error_details: Optional dict with field-level validation errors.
        url: The full API route that was called.
        method: The HTTP method used.
        response_data: The complete parsed JSON response body.
    """

    def __init__(
        self,
        *,
        message: str,
        status_code: int,
        error_type: str,
        error_details: dict | None,
        url: str,
        method: str,
        response_data: dict,
    ):
        self.message = message
        self.status_code = status_code
        self.error_type = error_type
        self.error_details = error_details or {}
        self.url = url
        self.method = method
        self.response_data = response_data
        super().__init__(self._build_message())

    def _build_message(self) -> str:
        lines = [
            f"",
            f"{'='*60}",
            f"  API ERROR: {self.method.upper()} {self.url}",
            f"  Status: {self.status_code}",
            f"  Error Type: {self.error_type}",
            f"  Message: {self.message}",
        ]
        if self.error_details:
            lines.append(f"  Details: {self.error_details}")
        lines.append(f"  Full Response: {self.response_data}")
        lines.append(f"{'='*60}")
        return "\n".join(lines)

    def __str__(self) -> str:
        return self._build_message()


class SecuirdClient:
    """Stateful CLI-style test client for Secuird API.

    Wraps Flask's ``test_client`` and manages auth tokens, JSON
    serialization, and detailed error reporting so tests fail with
    actionable output.
    """

    def __init__(self, flask_test_client):
        self._client = flask_test_client
        self._token: str | None = None
        logger.debug("[SecuirdClient] Initialized")

        # Attach domain-specific sub-clients
        from tests.integration.client.auth import AuthClient
        from tests.integration.client.mfa import MfaClient
        from tests.integration.client.ssh import SshClient
        from tests.integration.client.orgs import OrgsClient
        from tests.integration.client.admin import AdminClient
        from tests.integration.client.users import UsersClient
        self.auth = AuthClient(self)
        self.mfa = MfaClient(self)
        self.ssh = SshClient(self)
        self.orgs = OrgsClient(self)
        self.admin = AdminClient(self)
        self.users = UsersClient(self)

    def set_token(self, token: str) -> None:
        """Store a Bearer token for subsequent requests."""
        self._token = token
        logger.debug(f"[SecuirdClient] Token set: {token[:12]}...")

    def clear_token(self) -> None:
        """Remove the stored Bearer token."""
        self._token = None
        logger.debug("[SecuirdClient] Token cleared")

    def _url(self, path: str) -> str:
        """Ensure the path starts with /api/v1."""
        if path.startswith("http"):
            return path
        if not path.startswith("/api/v1"):
            path = f"/api/v1{path}"
        return path

    def _headers(self) -> dict:
        """Build request headers including auth if available."""
        headers = {"Accept": "application/json"}
        if self._token:
            headers["Authorization"] = f"Bearer {self._token}"
        return headers

    def _request(self, method: str, path: str, data: dict | None = None) -> dict:
        """Execute an HTTP request and handle the response.

        Args:
            method: HTTP method (get, post, patch, delete).
            path: API path (e.g. /auth/register).
            data: Optional JSON-serializable payload.

        Returns:
            The parsed JSON response body.

        Raises:
            ApiError: If the response status code is >= 400.
        """
        url = self._url(path)
        headers = self._headers()
        kwargs = {"headers": headers, "follow_redirects": True}

        if data is not None and method in ("post", "patch", "delete"):
            headers["Content-Type"] = "application/json"
            kwargs["data"] = json.dumps(data)

        logger.debug(f"[SecuirdClient] {method.upper()} {url} — data={data}")

        response = getattr(self._client, method)(url, **kwargs)

        try:
            body = response.get_json()
        except Exception:
            body = {"_raw": response.data.decode("utf-8", errors="replace")}

        logger.debug(f"[SecuirdClient] {method.upper()} {url} — status={response.status_code}")

        if response.status_code >= 400:
            # The API may return error info nested under `error` or flat at top level
            error_block = body.get("error") if isinstance(body.get("error"), dict) else {}
            error_type = (
                error_block.get("type")
                or body.get("error_type", "UNKNOWN_ERROR")
                if body else "UNKNOWN_ERROR"
            )
            error_details = (
                error_block.get("details")
                or body.get("error_details")
                if body else None
            )
            message = body.get("message", "No message provided") if body else "No message provided"
            raise ApiError(
                message=message,
                status_code=response.status_code,
                error_type=error_type,
                error_details=error_details,
                url=url,
                method=method.upper(),
                response_data=body or {},
            )

        return body or {}

    def get(self, path: str) -> dict:
        """Execute a GET request."""
        return self._request("get", path)

    def post(self, path: str, data: dict | None = None) -> dict:
        """Execute a POST request."""
        return self._request("post", path, data)

    def patch(self, path: str, data: dict | None = None) -> dict:
        """Execute a PATCH request."""
        return self._request("patch", path, data)

    def put(self, path: str, data: dict | None = None) -> dict:
        """Execute a PUT request."""
        return self._request("put", path, data)

    def delete(self, path: str, data: dict | None = None) -> dict:
        """Execute a DELETE request."""
        return self._request("delete", path, data)