"""Compara baseline Python vs respuesta del microservicio Go."""
from __future__ import annotations

import json
import os
import subprocess
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
SC_ROOT = Path(os.environ.get("SERVICES_COUNT_ROOT", ROOT.parent / "services-count"))
BASELINE = ROOT / "data" / "parity_baseline.json"
API_URL = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080/v1/count"


def call_api(pdf_path: Path) -> dict:
    result = subprocess.run(
        ["curl", "-s", "-F", f"files=@{pdf_path}", API_URL],
        capture_output=True,
        text=True,
        check=True,
    )
    payload = json.loads(result.stdout)
    for item in payload.get("results", []):
        if item.get("filename") == pdf_path.name:
            return item
    raise RuntimeError(f"sin resultado para {pdf_path.name}")


def main() -> None:
    if not BASELINE.exists():
        raise SystemExit("Ejecuta primero: python scripts/parity_baseline.py")

    import yaml

    config_path = SC_ROOT / "config" / "default.yaml"
    pdfs_dir = SC_ROOT / yaml.safe_load(config_path.read_text())["paths"]["pdfs_dir"]

    baseline = json.loads(BASELINE.read_text(encoding="utf-8"))
    mismatches = 0
    for expected in baseline:
        pdf = pdfs_dir / expected["filename"]
        if not pdf.exists():
            print(f"SKIP {expected['filename']} (no existe)")
            continue
        got = call_api(pdf)
        if got.get("service_count") != expected.get("service_count"):
            mismatches += 1
            print(f"MISMATCH {expected['filename']}: py={expected['service_count']} go={got.get('service_count')}")
        else:
            print(f"OK {expected['filename']}: count={got.get('service_count')}")

    if mismatches:
        raise SystemExit(f"{mismatches} diferencias encontradas")
    print("Paridad OK")


if __name__ == "__main__":
    main()