#!/usr/bin/env python3
"""Audit calibration-split oral-B-v2 development validation."""
import argparse
import glob
import hashlib
import json
import os

from experiments.analyze_bci_v2_recovery_development import checks
from experiments.bci_v2_calibrated_run import (
    CALIBRATION_EPISODES,
    CHALLENGE_EPISODES,
    MODEL_SEEDS,
    TARGET_QUANTILES,
    TASK_SEEDS,
    build_recovery_config,
    source_paths,
)
from experiments.bci_v2_recovery_run import FIXED_CONFIG
from experiments.bci_v2_run import CONDITIONS


def require(condition, message):
    if not condition:
        raise ValueError(message)


def sha256(path):
    digest = hashlib.sha256()
    with open(path, "rb") as handle:
        for chunk in iter(lambda: handle.read(1024 * 1024), b""):
            digest.update(chunk)
    return digest.hexdigest()


def validate(row, path, task_seed, digests):
    require(row.get("schema_version") == 4, f"{path}: schema")
    require(
        row.get("args", {}).get("task_seed") == task_seed
        and row["args"].get("model_seed") in MODEL_SEEDS,
        f"{path}: seeds",
    )
    protocol = row.get("protocol", {})
    require(
        protocol.get("name")
        == "oral_b_v2_calibrated_recovery_development_v1"
        and protocol.get("selection_split") == "development_validation"
        and protocol.get("hyperparameter_selection") is False
        and protocol.get("confirmation_seeds_touched") is False
        and protocol.get("fixed_config") == FIXED_CONFIG
        and protocol.get("calibration_uses_outcome_labels") is False
        and protocol.get("protocol_sha256") == digests["protocol"]
        and protocol.get("failed_target_gate_sha256")
        == digests["failed_target_gate"],
        f"{path}: protocol",
    )
    provenance = row.get("provenance", {})
    require(
        provenance.get("git_tracked_dirty") is False
        and provenance.get("tracked_inputs")
        and all(provenance["tracked_inputs"].values())
        and set(provenance["tracked_inputs"]) == set(digests)
        and provenance.get("input_sha256") == digests,
        f"{path}: provenance",
    )
    require(
        row.get("config") == vars(build_recovery_config())
        and row.get("split") == "development_validation"
        and row.get("finite") is True,
        f"{path}: config/split",
    )
    require(
        set(row.get("conditions", {})) == set(CONDITIONS),
        f"{path}: conditions",
    )
    for name in CONDITIONS:
        warmup = row["warmup"][name]
        condition = row["conditions"][name]
        cost = condition["cost"]
        require(
            warmup["batches"] == 100
            and warmup["examples"] == 6400
            and warmup["instruction_present"] is False
            and warmup["role_cursor_scalar_observations"] == 12800
            and warmup["predictor_max_abs_error"] <= 1e-5
            and len(condition["daily_success"]) == 14
            and cost["maximum_state_episode_steps"] == 25088
            and cost["cursor_scalar_observations"]
            == 2 * cost["role_probe_examples"]
            and cost["task_loss_queries"] == 0
            and cost["reverse_mode_calls"] == 0,
            f"{path}: condition {name}",
        )
    challenge = row["assays"]["challenge"]
    calibration = challenge["calibration"]
    targets = challenge["targets"]
    require(
        calibration["episodes"] == CALIBRATION_EPISODES
        and calibration["quantiles"] == list(TARGET_QUANTILES)
        and calibration["targets"] == targets
        and calibration["uses_outcome_labels"] is False
        and calibration["seed"] == 550_000 + task_seed
        and challenge["episodes_per_target"] == CHALLENGE_EPISODES
        and challenge["selection_over_evaluation_outcomes"] is False
        and challenge["maximum_steps_per_episode"] == 28
        and len(targets) == len(TARGET_QUANTILES)
        and all(
            targets[index] < targets[index + 1]
            for index in range(len(targets) - 1)
        )
        and row["signatures"]["challenge_episodes"]
        == len(TARGET_QUANTILES) * CHALLENGE_EPISODES,
        f"{path}: calibration",
    )


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--results", default="results/bci_v2_calibrated_dev"
    )
    parser.add_argument(
        "--out", default="results/bci_v2_calibrated_dev_gate.json"
    )
    args = parser.parse_args()
    digests = {
        name: sha256(path)
        for name, path in source_paths().items()
    }
    expected = {
        f"bci_v2_calibrated_t{task_seed}_m0.json"
        for task_seed in TASK_SEEDS
    }
    observed = {
        os.path.basename(path)
        for path in glob.glob(os.path.join(args.results, "*.json"))
    }
    require(
        observed == expected,
        (
            f"calibrated grid drift: missing={sorted(expected-observed)}, "
            f"extra={sorted(observed-expected)}"
        ),
    )
    records = {}
    commits = set()
    source_sha256 = {}
    for task_seed in TASK_SEEDS:
        path = os.path.join(
            args.results,
            f"bci_v2_calibrated_t{task_seed}_m0.json",
        )
        with open(path) as handle:
            row = json.load(handle)
        validate(row, path, task_seed, digests)
        records[task_seed] = row
        commits.add(row["provenance"]["git_commit"])
        source_sha256[path] = sha256(path)
    require(len(commits) == 1, "calibrated source revision drift")
    checks_by_seed = {
        str(seed): checks(records[seed]) for seed in TASK_SEEDS
    }
    passed = all(
        value for seed_checks in checks_by_seed.values()
        for value in seed_checks.values()
    )
    output = {
        "protocol":
            "oral_b_v2_calibrated_recovery_development_v1",
        "status": "passed" if passed else "failed",
        "complete_grid": True,
        "fixed_config": FIXED_CONFIG,
        "calibration_quantiles": list(TARGET_QUANTILES),
        "checks_by_task_seed": checks_by_seed,
        "calibrated_targets_by_task_seed": {
            str(seed): records[seed]["assays"]["challenge"]["targets"]
            for seed in TASK_SEEDS
        },
        "intact_final_by_task_seed": [
            records[seed]["conditions"]["intact"]["final_success"]
            for seed in TASK_SEEDS
        ],
        "challenge_success_fraction_by_task_seed": [
            records[seed]["signatures"]["challenge_success_fraction"]
            for seed in TASK_SEEDS
        ],
        "terminal_outcome_accuracy_by_task_seed": [
            records[seed]["signatures"][
                "terminal_residual_outcome_balanced_acc"
            ]
            for seed in TASK_SEEDS
        ],
        "confirmation_seeds_touched": False,
        "calibrated_confirmation_opened": passed,
        "source_commit": next(iter(commits)),
        "source_sha256": source_sha256,
        "input_sha256": digests,
        "review_score_before": 7,
        "review_score_after": 7,
        "score_change_rule": (
            "development validation never changes the formal score"
        ),
    }
    os.makedirs(os.path.dirname(os.path.abspath(args.out)), exist_ok=True)
    if os.path.exists(args.out):
        with open(args.out) as handle:
            existing = json.load(handle)
        require(existing == output, "existing calibrated R1 gate differs")
    else:
        with open(args.out, "w") as handle:
            json.dump(output, handle, indent=2, sort_keys=True)
            handle.write("\n")
    print(json.dumps(output, indent=2))


if __name__ == "__main__":
    main()