#!/usr/bin/env python3
"""gen_cache_hash_truth.py — factory batch 6 truth battery (live cache._hash)."""

import json
import sys
from pathlib import Path

REPO = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(REPO / "src"))
sys.path.insert(0, str(REPO / "src" / "rune"))

import cache as ch  # noqa: E402


def main():
    cases = [
        {"fn": "hash", "name": "ascii", "input": {"text": s},
         "expected": {"hash": ch._hash(s)}}
        for s in ["", "hello world", "unicode ümlaut ✅", "a" * 500]
    ]
    comp_inputs = [
        "",
        "# comment\n\nreal line here\n====\n// slash comment\n(_source_: x)\n[source: y]\ntiny\nkeep this line too\n\n" + "z" * 900,
        "line one\nline two\nline three",
        "====",
        "ab\ncdefgh",
    ]
    for i, s in enumerate(comp_inputs):
        cases.append({"fn": "compress", "name": f"compress_{i}",
                      "input": {"text": s},
                      "expected": {"compressed": ch._compress(s)}})
    out = {"oracle": "cache._hash", "generated": "2026-10-07", "cases": cases}
    (REPO / "src/go/cache" / "truth_hash.json").write_text(json.dumps(out, indent=1) + "\n")
    print(f"wrote {len(cases)} cases")


if __name__ == "__main__":
    main()