from __future__ import annotations

from pathlib import Path
import argparse
import json
import sys

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src"
SIM_SRC = ROOT / "simulation" / "src"
for path in (str(SRC), str(SIM_SRC)):
    if path not in sys.path:
        sys.path.insert(0, path)

from hermes_sim.candles import Candle  # noqa: E402
from hermes_sim.preprocess import build_manifest, discover_raw_archives, load_raw_archives, write_manifest, write_prepared_csv  # noqa: E402


def main() -> int:
    parser = argparse.ArgumentParser(description="Preprocess raw Binance archives into a canonical Hermes input CSV.")
    parser.add_argument("--symbol", default="XRPUSDT")
    parser.add_argument("--interval", default="1m")
    parser.add_argument("--raw-dir", default=str(ROOT / "simulation" / "data" / "raw"))
    parser.add_argument("--out", default=None, help="Output CSV path. Defaults to simulation/data/prepared/<symbol>/<interval>/dataset.csv")
    parser.add_argument("--manifest-out", default=None, help="Output manifest JSON path. Defaults beside the CSV.")
    args = parser.parse_args()

    raw_dir = Path(args.raw_dir)
    archives = discover_raw_archives(raw_dir, args.symbol, args.interval)
    if not archives:
        raise SystemExit(f"No raw archives found under {raw_dir}")

    candles = load_raw_archives(archives)
    out_path = Path(args.out) if args.out else ROOT / "simulation" / "data" / "prepared" / args.symbol.upper() / args.interval / f"{args.symbol.upper()}-{args.interval}.csv"
    write_prepared_csv(out_path, candles)

    dataset = build_manifest(
        symbol=args.symbol,
        interval=args.interval,
        source_kind="bulk",
        source_files=archives,
        candles=candles,
        output_csv=out_path,
    )
    manifest_path = Path(args.manifest_out) if args.manifest_out else out_path.with_suffix(".manifest.json")
    write_manifest(manifest_path, dataset)
    print(json.dumps({"candles": len(candles), "csv": str(out_path), "manifest": str(manifest_path)}, indent=2))
    return 0


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