from __future__ import annotations

import csv
from typing import Dict, List

from .config import config
from .logger import setup_logger


logger = setup_logger(__name__)


def _append_row(
    csv_name: str, fieldnames: List[str], row: Dict[str, str]
) -> str:
    """Append a row to artifacts CSV, creating with header if absent."""
    art_dir = config.paths.ARTIFACTS_DIR
    art_dir.mkdir(parents=True, exist_ok=True)
    target = art_dir / csv_name
    write_header = not target.exists()
    with open(target, "a", encoding="utf-8", newline="") as f:
        writer = csv.DictWriter(f, fieldnames=fieldnames)
        if write_header:
            writer.writeheader()
        writer.writerow({k: row.get(k, "") for k in fieldnames})
    return str(target)


def record_proxies_dedup(
    company: str,
    agent_type: str,
    use_case: str,
    deduped_proxies_csv_path: str,
) -> str:
    return _append_row(
        "ckpt6_proxies_dedup.csv",
        [
            "company",
            "agent_type",
            "use_case",
            "deduped_proxies_csv_path",
        ],
        {
            "company": company,
            "agent_type": agent_type,
            "use_case": use_case,
            "deduped_proxies_csv_path": deduped_proxies_csv_path,
        },
    )