#!/usr/bin/env python3
"""Run the frozen raw-KP controls for the KTS-1 validation endpoint."""
import argparse
import hashlib
import json
import os
import subprocess
import sys


ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
PROTOCOL = os.path.join(ROOT, "KP_TEACHING_SIGNAL_ABLATION.md")
PREREQUISITE = os.path.join(
    ROOT, "results", "kp_dynamic_projection_full_gate.json")
RULES = ("raw", "matched")


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 git_output(*args):
    return subprocess.run(
        ["git", *args], cwd=ROOT, check=True, capture_output=True,
        text=True).stdout.strip()


def require_source():
    with open(PREREQUISITE) as handle:
        gate = json.load(handle)
    if not (
        gate.get("protocol") == "kp_dynamic_neutral_projection_full_v1"
        and gate.get("status") == "passed"
        and gate.get("independent_confirmation_opened") is True
    ):
        raise RuntimeError("KTS-1 requires the passed dynamic validation gate")
    required = [
        PROTOCOL,
        os.path.abspath(__file__),
        os.path.join(ROOT, "experiments", "analyze_kp_teaching_signal.py"),
        os.path.join(ROOT, "experiments", "conv_local_smoke.py"),
        os.path.join(ROOT, "experiments", "conv_run.py"),
        os.path.join(ROOT, "sdil", "conv.py"),
    ]
    for path in required:
        relative = os.path.relpath(path, ROOT)
        subprocess.run(
            ["git", "ls-files", "--error-unmatch", relative],
            cwd=ROOT, check=True, capture_output=True)
    if git_output("status", "--porcelain", "--untracked-files=no"):
        raise RuntimeError("KTS-1 requires a clean tracked source")
    return {
        "git_commit": git_output("rev-parse", "HEAD"),
        "protocol_sha256": sha256(PROTOCOL),
        "prerequisite_sha256": sha256(PREREQUISITE),
    }


def command(device, rule, path):
    return [
        sys.executable, "experiments/conv_run.py",
        "--device", device,
        "--depth", "20",
        "--width", "16",
        "--seed", "0",
        "--loader_seed", "0",
        "--batch_size", "128",
        "--epochs", "200",
        "--train_limit", "0",
        "--val_examples", "5000",
        "--split_seed", "2027",
        "--eval_split", "validation",
        "--eval_every", "0",
        "--augment_train", "1",
        "--lr_schedule", "step",
        "--lr_milestones", "100,150",
        "--lr_gamma", "0.1",
        "--warmup_epochs", "0",
        "--momentum", "0.9",
        "--weight_decay", "1e-4",
        "--normalization", "batchnorm",
        "--mode", "kp_traffic",
        "--lr", "0.1",
        "--output_lr", "0.1",
        "--learn_P", "1",
        "--eta_P", "0.1",
        "--predictor_mode", "closed_form",
        "--predictor_warmup_steps", "1",
        "--predictor_every", "0",
        "--neutral_projection", "1",
        "--traffic_rule", rule,
        "--traffic_ratio", "4.0",
        "--traffic_seed", "4000",
        "--traffic_calibration_examples", "64",
        "--alignment_probe", "32",
        "--out", path,
    ]


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--device", default="cuda")
    parser.add_argument("--rule", choices=("all",) + RULES, default="all")
    parser.add_argument(
        "--outdir", default="results/kp_teaching_signal_ablation")
    parser.add_argument("--dry-run", action="store_true")
    args = parser.parse_args()
    source = require_source()
    rules = RULES if args.rule == "all" else (args.rule,)
    os.makedirs(args.outdir, exist_ok=True)
    for rule in rules:
        path = os.path.join(args.outdir, f"{rule}.json")
        if os.path.exists(path):
            raise RuntimeError(f"refusing to overwrite frozen endpoint: {path}")
        cmd = command(args.device, rule, path)
        print(json.dumps({
            "rule": rule,
            "command": cmd,
            "source": source,
        }, sort_keys=True), flush=True)
        if not args.dry_run:
            subprocess.run(cmd, cwd=ROOT, check=True)


if __name__ == "__main__":
    main()