from __future__ import annotations

import json
import logging
from datetime import datetime, timezone
from pathlib import Path
from typing import Any

from src.config.settings import settings


class JsonFormatter(logging.Formatter):
    def format(self, record: logging.LogRecord) -> str:
        payload: dict[str, Any] = {
            "timestamp": datetime.now(timezone.utc).isoformat().replace("+00:00", "Z"),
            "level": record.levelname,
            "logger": record.name,
            "message": record.getMessage(),
        }
        for key in (
            "request_id",
            "job_id",
            "conversation_id",
            "duration_ms",
            "path",
            "method",
            "status_code",
            "attempt",
            "sap_status",
            "sap_http_status",
            "sap_lead_id",
        ):
            value = getattr(record, key, None)
            if value is not None:
                payload[key] = value
        if record.exc_info:
            payload["exception"] = self.formatException(record.exc_info)
        return json.dumps(payload, ensure_ascii=True)


def configure_logging() -> None:
    settings.logs_dir.mkdir(parents=True, exist_ok=True)
    log_path = Path(settings.logs_dir) / "nexus_ai.log"

    root = logging.getLogger()
    root.setLevel(logging.INFO)
    root.handlers.clear()

    formatter = JsonFormatter()
    stream_handler = logging.StreamHandler()
    stream_handler.setFormatter(formatter)

    file_handler = logging.FileHandler(log_path, encoding="utf-8")
    file_handler.setFormatter(formatter)

    root.addHandler(stream_handler)
    root.addHandler(file_handler)