#!/usr/bin/env python3
"""Run a shard of the frozen residual-response mirror capture screen."""
import argparse
import os
import subprocess
import sys


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--device", default="cuda")
    parser.add_argument("--shard_index", type=int, default=0)
    parser.add_argument("--num_shards", type=int, default=1)
    parser.add_argument("--dry_run", action="store_true")
    args = parser.parse_args()
    if not 0 <= args.shard_index < args.num_shards:
        raise ValueError("invalid shard index")
    common = [
        sys.executable, "experiments/conv_run.py", "--device", args.device,
        "--depth", "20", "--width", "16", "--seed", "0",
        "--loader_seed", "0", "--batch_size", "128", "--epochs", "0",
        "--train_limit", "10000", "--val_examples", "5000",
        "--split_seed", "2027", "--eval_split", "validation",
        "--eval_every", "0", "--augment_train", "1", "--lr", "0.1",
        "--output_lr", "0.1", "--lr_schedule", "constant",
        "--warmup_epochs", "0", "--momentum", "0.9",
        "--weight_decay", "1e-4", "--normalization", "batchnorm",
        "--a_scale", "1", "--alignment_probe", "64",
        "--mirror_batch_size", "1", "--mirror_noise_std", "1",
        "--mirror_seed", "3000",
    ]
    jobs = [("fixed_hfa", common + [
        "--mode", "hfa", "--out",
        "results/residual_mirror_capture/fixed_hfa.json",
    ])]
    for rate in (0.03, 0.1, 0.3):
        tag = f"rrm_etaM{rate}"
        jobs.append((tag, common + [
            "--mode", "rrm", "--mirror_eta", str(rate),
            "--mirror_warmup_steps", "20", "--out",
            f"results/residual_mirror_capture/{tag}.json",
        ]))
    os.makedirs("results/residual_mirror_capture", exist_ok=True)
    for index, (tag, command) in enumerate(jobs):
        if index % args.num_shards != args.shard_index:
            continue
        print(tag, " ".join(command), flush=True)
        if not args.dry_run:
            subprocess.run(command, check=True)


if __name__ == "__main__":
    main()