"""Checks the v1 README results table against the computed analysis JSON.

The v1 README table is an artifact people may still quote, so it must be generated from
the analysis output rather than retyped:

    python tests/test_readme_table.py

Parses only the Results section (between `## Results` and `### Paired`), matches
each row by model and dataset, and requires every metric value to appear at three
decimals. Also fails if a computed cell has no README row.
"""
from __future__ import annotations

import json
import re
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
ANN = ROOT / "analysis_canon.json"
README = ROOT / "README-v1.md"  # v1 tables moved here when the card took README.md

METRICS = ["t2a_r1", "t2a_r5", "t2a_r10", "t2a_mrr",
           "a2t_r1", "a2t_r5", "a2t_r10", "a2t_map"]


def results_section(text: str) -> str:
    start = text.index("## Results")
    end = text.index("### Paired")
    return text[start:end]


def main() -> int:
    if not ANN.exists():
        print(f"missing {ANN.name}; run `python analysis.py sweep_canon` first")
        return 1
    cells = json.loads(ANN.read_text(encoding="utf-8"))["cells"]
    section = results_section(README.read_text(encoding="utf-8"))
    rows = [ln for ln in section.splitlines() if ln.startswith("| laion/")]

    fails = []
    for c in cells:
        # the README writes "AudioCaps"; the JSON writes "audiocaps"
        match = [r for r in rows
                 if c["model"] in r
                 and f"| {c['dataset'].lower()} |" in r.lower()]
        if not match:
            fails.append(f"no README row for {c['model']} {c['dataset']}")
            print(f"FAIL  missing row: {c['model']} / {c['dataset']}")
            continue
        row = match[0]
        missing = [m for m in METRICS
                   if f"{c['metrics'][m]['value']:.3f}" not in row]
        print(f"{'PASS' if not missing else 'FAIL'}  {c['model']} / {c['dataset']}"
              f"{'' if not missing else '  missing ' + ', '.join(missing)}")
        if missing:
            fails.append(f"{c['model']} {c['dataset']}: {missing}")

    print("\n" + ("README-v1 table matches analysis_canon.json"
                  if not fails else f"FAILURES: {fails}"))
    return 0 if not fails else 1


if __name__ == "__main__":
    raise SystemExit(main())