from __future__ import annotations

import hashlib
import json
from pathlib import Path
from typing import Dict, Tuple

import pandas as pd

from crawler.utils import canonicalize_url


def make_assessment_id(url: str) -> str:
    canonical = canonicalize_url(url.lower())
    return hashlib.sha1(canonical.encode("utf-8")).hexdigest()


def to_solutions_url(url: str) -> str:
    """Ensure outgoing URLs include the /solutions/ prefix for compatibility with labels/eval."""
    return url.replace("/products/product-catalog", "/solutions/products/product-catalog")


def load_catalog(path: str) -> Tuple[pd.DataFrame, Dict[str, dict], Dict[str, str]]:
    p = Path(path)
    if not p.exists():
        raise FileNotFoundError(f"Catalog file not found: {path}")
    if p.suffix == ".jsonl":
        df = pd.read_json(p, lines=True)
    elif p.suffix in {".parquet", ".pq"}:
        df = pd.read_parquet(p)
    else:
        raise ValueError(f"Unsupported catalog format: {p}")

    df["url_canonical"] = df["url"].apply(lambda u: canonicalize_url(str(u).lower()))
    df["assessment_id"] = df["url_canonical"].apply(make_assessment_id)
    df["url_recommend"] = df["url"].apply(to_solutions_url)
    if "duration" in df.columns and "duration_minutes" not in df.columns:
        df["duration_minutes"] = df["duration"]
    for col in ["remote_support", "adaptive_support"]:
        if col in df.columns:
            df[col] = df[col].fillna(False).astype(bool)
    catalog_by_id = {row.assessment_id: row._asdict() if hasattr(row, "_asdict") else row.to_dict() for _, row in df.iterrows()}
    id_by_url = {}
    for canonical, aid in zip(df["url_canonical"], df["assessment_id"]):
        id_by_url[canonical] = aid
        alt_products = canonical.replace("/solutions/products/product-catalog", "/products/product-catalog")
        alt_solutions = canonical.replace("/products/product-catalog", "/solutions/products/product-catalog")
        id_by_url.setdefault(alt_products, aid)
        id_by_url.setdefault(alt_solutions, aid)
    return df, catalog_by_id, id_by_url


def save_catalog_with_ids(input_path: str, output_path: str) -> None:
    df, _, _ = load_catalog(input_path)
    Path(output_path).parent.mkdir(parents=True, exist_ok=True)
    if output_path.endswith(".jsonl"):
        df.to_json(output_path, orient="records", lines=True)
    else:
        df.to_parquet(output_path, index=False)


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser()
    parser.add_argument("--input", required=True)
    parser.add_argument("--output", required=True)
    args = parser.parse_args()
    save_catalog_with_ids(args.input, args.output)