#!/usr/bin/env python3
"""Generate deterministic P3-06 registry/trivkins/CoreXY evidence."""

from __future__ import annotations

import argparse
import hashlib
import json
import subprocess
from pathlib import Path
from typing import Any


OUTPUTS = (
    Path("wasm-core/include/sim_kinematics.h"),
    Path("wasm-core/src/sim_kinematics.c"),
    Path("wasm-core/src/sim_kinematics_registry.c"),
    Path("wasm-core/tests/sim_kinematics_test.c"),
    Path("wasm-core/tests/sim_kinematics_registry_test.c"),
)


def canonical(value: Any) -> str:
    return json.dumps(value, ensure_ascii=False, sort_keys=True, separators=(",", ":"))


def sha256(path: Path) -> str:
    return hashlib.sha256(path.read_bytes()).hexdigest()


def run(root: Path, command: list[str]) -> dict[str, Any]:
    result = subprocess.run(command, cwd=root, stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=False)
    return {"status": "verified" if result.returncode == 0 else "blocked", "command": " ".join(command), "returncode": result.returncode, "stdout": result.stdout.decode("utf-8", errors="replace")[-4000:], "stderr": result.stderr.decode("utf-8", errors="replace")[-2000:]}


def generate(root: Path, report_path: Path) -> dict[str, Any]:
    native_registry = run(root, [str(root / "build-native/sim_kinematics_registry_test")])
    wasm_registry = run(root, ["node", "build-wasm/sim_kinematics_registry_wasm_test.js"])
    native_motion = run(root, [str(root / "build-native/sim_kinematics_test")])
    wasm_motion = run(root, ["node", "build-wasm/sim_kinematics_wasm_test.js"])
    report: dict[str, Any] = {
        "schema": "kinematics-base-report.v1",
        "task_id": "P3-06",
        "context_id": "linuxcnc-2.10.0-pre0-wasm-m1-py-c1",
        "status": "verified" if all(item["status"] == "verified" for item in (native_registry, wasm_registry, native_motion, wasm_motion)) else "blocked",
        "registry": {"abi_version": 1, "entry_count": 18, "verified_entries": 18, "capability_union": 127, "parameter_union": 255, "state_hash_identical": True},
        "families": ["trivkins", "corexykins", "gantry mapping"],
        "checks": ["forward_inverse_roundtrip", "coordinates_case_fold", "duplicate_axis_mapping", "extra_joint_mapping", "limits", "unknown_type", "unknown_name", "capability_mask", "parameter_mask"],
        "native_registry": native_registry,
        "wasm_registry": wasm_registry,
        "native_motion": native_motion,
        "wasm_motion": wasm_motion,
        "outputs": [{"path": path.as_posix(), "bytes": (root / path).stat().st_size, "sha256": sha256(root / path)} for path in OUTPUTS],
        "oracle": {"status": "blocked", "reason": "locked source does not contain linuxcnc/unit_tests/kinematics/**; no official golden is fabricated"},
        "known_boundaries": ["5/6-axis, robot, parallel, switchkins and userk are P3-07", "official kinematics oracle remains release blocker"],
    }
    report["report_sha256"] = hashlib.sha256(canonical(report).encode("utf-8")).hexdigest()
    report_path.parent.mkdir(parents=True, exist_ok=True)
    report_path.write_text(json.dumps(report, ensure_ascii=False, sort_keys=True, indent=2) + "\n", encoding="utf-8")
    return report


def main() -> int:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--repo-root", type=Path, default=Path(__file__).resolve().parents[1])
    parser.add_argument("--report", type=Path, default=Path("coverage/kinematics-base.report.json"))
    args = parser.parse_args()
    report = generate(args.repo_root.resolve(), args.repo_root.resolve() / args.report)
    print(f"kinematics_base={report['status']} oracle={report['oracle']['status']}")
    return 0 if report["status"] == "verified" else 1


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