#!/usr/bin/env python3
"""Verify removed history is optional, but live embedded documents remain required."""
from __future__ import annotations

from pathlib import Path
import shutil
import sys
from tempfile import TemporaryDirectory

from preflight import check

ROOT = Path(__file__).resolve().parents[2]

# A compact 0.31.7 source tree may omit historical version-labelled documents.
# It must still pass the same preflight used by every ./dev.sh command.
assert check(ROOT) == []

with TemporaryDirectory(prefix="rustproxy-pruned-source-") as tmp:
    stripped = Path(tmp) / "RustProxy"
    shutil.copytree(
        ROOT, stripped,
        ignore=shutil.ignore_patterns(".git", "target", "data", ".upgrade-backup", "__pycache__"),
    )

    # This functional document is in the Reader registry, but intentionally not
    # in the legacy hand-maintained required-file list. It must still be caught.
    reader_doc = stripped / "docs/REFERENCES.md"
    assert reader_doc.is_file(), "Missing test fixture: docs/REFERENCES.md"
    reader_doc.unlink()
    try:
        check(stripped)
    except ValueError as error:
        assert "Missing embedded Reader document: docs/REFERENCES.md" in str(error), error
    else:
        raise AssertionError("Preflight accepted missing compile-time embedded document")

    shutil.copy2(ROOT / "docs/REFERENCES.md", reader_doc)
    required_module = stripped / "src/cache/mod.rs"
    required_module.unlink()
    try:
        check(stripped)
    except ValueError as error:
        assert "missing src/cache/mod.rs" in str(error), error
    else:
        raise AssertionError("Preflight accepted missing runtime source")

print("PASS: pruned historical documents are optional; embedded Reader files and runtime sources are mandatory.")