#!/usr/bin/env python3
"""
End-to-end release builder and checksum verifier for UnsolvedMed v1.0.0.
Runs:
  1. scripts/validate.py
  2. scripts/deduplicate.py
  3. scripts/audit_samples.py
  4. scripts/generate_dataset_card.py
  5. Computes SHA-256 checksums for all release artifacts and updates releases/release_manifest.json
"""

import hashlib
import json
import subprocess
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent


def sha256_file(path: Path) -> str:
    h = hashlib.sha256()
    with path.open("rb") as f:
        for chunk in iter(lambda: f.read(1024 * 1024), b""):
            h.update(chunk)
    return h.hexdigest()


def main() -> int:
    for script in ["validate.py", "deduplicate.py", "audit_samples.py", "generate_dataset_card.py"]:
        print(f"=== Running {script} ===")
        res = subprocess.run([sys.executable, str(ROOT / "scripts" / script)], cwd=str(ROOT))
        if res.returncode != 0:
            print(f"Release build failed at {script}")
            return res.returncode

    manifest_path = ROOT / "releases" / "release_manifest.json"
    manifest = json.loads(manifest_path.read_text(encoding="utf-8"))
    checksums = {}
    for rel_path in manifest["files"] + ["README.md", "DATASET_CARD.md"]:
        fpath = ROOT / rel_path
        checksums[rel_path] = {
            "sha256": sha256_file(fpath),
            "bytes": fpath.stat().st_size,
        }
    manifest["checksums"] = checksums
    manifest_path.write_text(json.dumps(manifest, indent=2, ensure_ascii=False) + "\n", encoding="utf-8")
    print("=== Updated releases/release_manifest.json with SHA-256 checksums ===")
    return 0


if __name__ == "__main__":
    sys.exit(main())