#!/usr/bin/env python3
"""Upload this dataset to the Hugging Face Hub over HTTP.

Deliberately does not use git. A 100GB+ push through git-lfs stalls, retries
from zero, and needs a working git-lfs install (this clone does not have one).
`upload_large_folder` is the Hub's own path for exactly this case: many
workers, resumable, and it picks up where it left off if you rerun it.

Usage:
    hf auth login                                  # once
    python scripts/upload_to_hub.py --dry-run      # see what would go up
    python scripts/upload_to_hub.py                # upload shards + metadata
    python scripts/upload_to_hub.py --only images  # shards alone

Requires: pip install -U "huggingface_hub[hf_xet]"
"""

from __future__ import annotations

import argparse
import sys
from fnmatch import fnmatch
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parent.parent
DEFAULT_REPO = "zidcenek/GLAMIDuplicationDetection"

GROUPS = {
    "images": ["images/*.parquet"],
    "metadata": ["*.csv", "README.md", "LICENSE"],
}

# .cache/huggingface holds upload_large_folder's own resume state; .git and the
# source tarball must never be shipped to the Hub.
# fnmatch's "*" crosses "/", so an allow pattern like "*.csv" sweeps up every
# nested CSV as well -- a virtualenv inside the repo is enough to leak numpy's
# test fixtures into a public dataset. These directories are excluded outright.
IGNORE = [
    ".git/*", "**/.git/*",
    ".cache/*", "**/.cache/*",
    ".venv/*", "**/.venv/*", "venv/*", "**/venv/*", "**/site-packages/*",
    "*.tar.gz", "scripts/*",
    ".build_state.json", "**/.build_state.json",
    ".seen_ids.bin", "**/.seen_ids.bin",
    ".DS_Store", "**/.DS_Store",
]


def human(n: float) -> str:
    for unit in ("B", "KB", "MB", "GB", "TB"):
        if n < 1024:
            return f"{n:.1f}{unit}"
        n /= 1024
    return f"{n:.1f}PB"


def matching_files(root: Path, patterns: list[str]) -> list[Path]:
    hits = []
    for path in root.rglob("*"):
        if not path.is_file():
            continue
        rel = path.relative_to(root).as_posix()
        if any(fnmatch(rel, pat) for pat in IGNORE) or rel.startswith(".git/"):
            continue
        if any(fnmatch(rel, pat) for pat in patterns):
            hits.append(path)
    return sorted(hits)


def main() -> int:
    p = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
    p.add_argument("--repo-id", default=DEFAULT_REPO)
    p.add_argument("--root", type=Path, default=REPO_ROOT)
    p.add_argument("--only", choices=sorted(GROUPS), action="append",
                   help="upload just one group (repeatable); default is all of them")
    p.add_argument("--workers", type=int, default=8,
                   help="parallel upload workers (default: 8; lower it if your uplink saturates)")
    p.add_argument("--dry-run", action="store_true", help="list the files and exit")
    p.add_argument("--yes", "-y", action="store_true", help="skip the confirmation prompt")
    args = p.parse_args()

    from huggingface_hub import HfApi
    from huggingface_hub.utils import HfHubHTTPError

    try:
        import hf_xet  # noqa: F401
    except ImportError:
        print("note: hf_xet is not installed. Install it -- 'pip install -U \"huggingface_hub[hf_xet]\"' --\n"
              "      for chunk-level deduplication, which matters a lot for a near-duplicate image set.\n")

    patterns = [pat for group in (args.only or sorted(GROUPS)) for pat in GROUPS[group]]
    files = matching_files(args.root, patterns)
    if not files:
        sys.exit(f"nothing matches {patterns} under {args.root} -- build the shards first")

    suspicious = [f for f in files
                  if any(part.startswith(".") or part in {"site-packages", "node_modules"}
                         for part in f.relative_to(args.root).parts[:-1])]
    if suspicious:
        print("refusing to upload -- these matched from inside a hidden or vendored directory:")
        for f in suspicious[:10]:
            print(f"          {f.relative_to(args.root).as_posix()}")
        sys.exit("widen IGNORE in this script, or move that directory out of the repo")

    total = sum(f.stat().st_size for f in files)
    print(f"repo    {args.repo_id}  (dataset)")
    print(f"root    {args.root}")
    print(f"files   {len(files):,}  totalling {human(total)}")
    for f in files[:6]:
        print(f"          {f.relative_to(args.root).as_posix()}  {human(f.stat().st_size)}")
    if len(files) > 6:
        print(f"          ... and {len(files) - 6:,} more")

    stubs = [f for f in files if f.suffix == ".csv" and f.stat().st_size < 200]
    if stubs:
        print("\nWARNING: these CSVs are 134-byte git-lfs pointer stubs, not real data.")
        for f in stubs:
            print(f"          {f.relative_to(args.root).as_posix()}")
        print("         Uploading them would overwrite the real files on the Hub.")
        print("         Install git-lfs and run 'git lfs pull' first, or exclude them.")
        if not args.yes:
            sys.exit("aborting -- rerun with --only images, or fix the stubs")

    if args.dry_run:
        return 0

    api = HfApi()
    try:
        who = api.whoami()
    except Exception:
        sys.exit("not authenticated -- run 'hf auth login' first")
    print(f"user    {who['name']}")

    if not args.yes:
        if input("\nupload? [y/N] ").strip().lower() not in {"y", "yes"}:
            return 1

    try:
        api.upload_large_folder(
            repo_id=args.repo_id,
            repo_type="dataset",
            folder_path=str(args.root),
            allow_patterns=patterns,
            ignore_patterns=IGNORE,
            num_workers=args.workers,
            print_report=True,
        )
    except HfHubHTTPError as exc:
        sys.exit(f"upload failed: {exc}\nRerun the same command -- it resumes from where it stopped.")

    print(f"\nDone: https://huggingface.co/datasets/{args.repo_id}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())