"""
Helper Configuration API Router

Manages the Helper endpoint configuration.
"""

import json
import logging
from pathlib import Path
from typing import Optional

from fastapi import APIRouter
from fastapi.responses import JSONResponse
from pydantic import BaseModel, Field

logger = logging.getLogger("CamoufoxLauncher")

router = APIRouter(prefix="/api/helper", tags=["helper"])

# Config file path
_CONFIG_DIR = Path(__file__).parent.parent.parent / "config"
_HELPER_CONFIG_FILE = _CONFIG_DIR / "helper_config.json"


class HelperConfig(BaseModel):
    """Helper configuration."""

    enabled: bool = False
    endpoint: str = Field(default="", description="Helper endpoint URL")
    sapisid: Optional[str] = Field(
        default=None, description="SAPISID value (auto-extracted)"
    )


def _load_config() -> HelperConfig:
    """Load helper configuration from file."""
    if _HELPER_CONFIG_FILE.exists():
        try:
            data = json.loads(_HELPER_CONFIG_FILE.read_text(encoding="utf-8"))
            return HelperConfig(**data)
        except Exception as e:
            logger.warning(f"[Helper] Failed to load config: {e}")
    return HelperConfig()


def _save_config(config: HelperConfig) -> None:
    """Save helper configuration to file."""
    try:
        _CONFIG_DIR.mkdir(parents=True, exist_ok=True)
        _HELPER_CONFIG_FILE.write_text(
            json.dumps(config.model_dump(), indent=2, ensure_ascii=False),
            encoding="utf-8",
        )
    except Exception as e:
        logger.error(f"[Helper] Failed to save config: {e}")


@router.get("/config")
async def get_helper_config() -> JSONResponse:
    """Get Helper configuration."""
    config = _load_config()
    return JSONResponse(content=config.model_dump())


@router.post("/config")
async def update_helper_config(config: HelperConfig) -> JSONResponse:
    """Update Helper configuration."""
    _save_config(config)
    logger.info(
        f"[Helper] Config updated: enabled={config.enabled}, endpoint={config.endpoint}"
    )

    return JSONResponse(
        content={
            "success": True,
            "message": "Helper configuration saved",
            "config": config.model_dump(),
        }
    )