"""Seed data fixture for EvolutionTrack.

Inserts the three universal evolution tracks (Batter, Starting Pitcher,
Relief Pitcher) if they do not already exist.  Safe to call multiple times
thanks to get_or_create — depends on WP-01 (EvolutionTrack model) to run.
"""

import json
import os

_JSON_PATH = os.path.join(os.path.dirname(__file__), "evolution_tracks.json")


def load_tracks():
    """Return the locked list of evolution track dicts from the JSON fixture."""
    with open(_JSON_PATH) as fh:
        return json.load(fh)


def seed(model_class=None):
    """Insert evolution tracks that are not yet in the database.

    Args:
        model_class: Peewee model with get_or_create support.  Defaults to
            ``app.db_engine.EvolutionTrack`` (imported lazily so this module
            can be imported before WP-01 lands).

    Returns:
        List of (instance, created) tuples from get_or_create.
    """
    if model_class is None:
        from app.db_engine import EvolutionTrack as model_class  # noqa: PLC0415

    results = []
    for track in load_tracks():
        instance, created = model_class.get_or_create(
            card_type=track["card_type"],
            defaults=track,
        )
        results.append((instance, created))
    return results