#!/usr/bin/env python3
"""Small dependency-free validator used by remote crossover handoffs."""
import argparse
import json


def validate_selector(report, stage, count):
    assert report["gate"] == "pass"
    assert report["stage"] == stage
    assert report["num_expected_records"] == count
    assert report["num_audited_records"] == count
    assert report["missing_experiments"] == []
    assert len(report["selected"]) == 9
    assert report["test_policy"] == "none"


def validate_audit(report, count):
    assert report["audit_status"] == "passed"
    assert report["complete_grid"] is True
    assert report["failure_retaining"] is True
    assert report["num_audited_cells"] == count
    assert report["test_policy"] == "none"


def validate(report, kind, expected_commit=None):
    if kind == "resnet_p1_launch":
        assert expected_commit
        assert report["stage"] == "p1"
        assert report["source"]["git_commit"] == expected_commit
        assert report["num_jobs"] == 19
        assert report["allowed_physical_gpus"] == [5, 7]
    elif kind == "resnet_p1_selector":
        validate_selector(report, "resnet_crossover_p1", 19)
    elif kind == "transformer_p1_selector":
        validate_selector(report, "transformer_crossover_p1", 27)
    elif kind == "resnet_r2_audit":
        assert report["stage"] == "resnet_crossover_r2"
        validate_audit(report, 27)
    elif kind == "transformer_t2_audit":
        assert report["stage"] == "transformer_crossover_t2"
        validate_audit(report, 27)
    elif kind == "crossover_81_audit":
        assert report["stage"] == "crossover_x1_81"
        validate_audit(report, 81)
    else:
        raise ValueError(f"unknown artifact kind: {kind}")


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--path", required=True)
    parser.add_argument(
        "--kind",
        required=True,
        choices=(
            "resnet_p1_launch",
            "resnet_p1_selector",
            "transformer_p1_selector",
            "resnet_r2_audit",
            "transformer_t2_audit",
            "crossover_81_audit",
        ),
    )
    parser.add_argument("--expected-commit")
    args = parser.parse_args()
    with open(args.path, encoding="utf-8") as handle:
        report = json.load(handle)
    validate(report, args.kind, args.expected_commit)
    print(f"validated {args.kind}: {args.path}")


if __name__ == "__main__":
    main()