from __future__ import annotations

import json
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT))

from app.composer import compose  # noqa: E402
from dataset.generate_dataset import (  # noqa: E402
    SEED,
    expand_customers,
    expand_merchants,
    expand_triggers,
    load_seeds,
    random,
    write_outputs,
    write_test_pairs,
)


def ensure_expanded() -> Path:
    out_dir = ROOT / "expanded"
    if (out_dir / "test_pairs.json").exists():
        return out_dir
    rnd = random.Random(SEED)
    categories, merchant_seeds, customer_seeds, trigger_seeds = load_seeds(ROOT / "dataset")
    merchants = expand_merchants(merchant_seeds, rnd)
    customers = expand_customers(customer_seeds, merchants, rnd)
    triggers = expand_triggers(trigger_seeds, merchants, customers, rnd)
    write_outputs(out_dir, categories, merchants, customers, triggers)
    write_test_pairs(out_dir, triggers, rnd)
    return out_dir


def load_json(path: Path) -> dict:
    return json.loads(path.read_text(encoding="utf-8"))


def main() -> None:
    out_dir = ensure_expanded()
    pairs = load_json(out_dir / "test_pairs.json")["pairs"]
    submission_path = ROOT / "submission.jsonl"
    with submission_path.open("w", encoding="utf-8", newline="\n") as fp:
        for pair in pairs:
            merchant = load_json(out_dir / "merchants" / f"{pair['merchant_id']}.json")
            category = load_json(out_dir / "categories" / f"{merchant['category_slug']}.json")
            trigger = load_json(out_dir / "triggers" / f"{pair['trigger_id']}.json")
            customer = None
            if pair.get("customer_id"):
                customer = load_json(out_dir / "customers" / f"{pair['customer_id']}.json")
            result = compose(category, merchant, trigger, customer)
            result["test_id"] = pair["test_id"]
            fp.write(json.dumps(result, ensure_ascii=False) + "\n")
    print(f"Wrote {submission_path}")


if __name__ == "__main__":
    main()