"""Run the experiment grid: main models, ablation, or a named subset.

Usage:
    python scripts/run_experiments.py --grid main            # all 11 main configs
    python scripts/run_experiments.py --grid ablation        # A1-A5 + full
    python scripts/run_experiments.py --only xgboost resnet50 # named subset
    python scripts/run_experiments.py --grid main --device cuda

Each config runs the full 15-evaluation CV (3 seeds x 5 folds); OOF predictions and
per-run metrics land in results/<name>/. Idempotent: skips configs whose summary.json
already exists unless --force.
"""
from __future__ import annotations

import argparse
import sys
import traceback
from pathlib import Path

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

from trifuse.experiments import main_grid, ablation_grid
from trifuse.eval.runner import run_experiment, RESULTS


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--grid", choices=["main", "ablation"], default=None)
    ap.add_argument("--only", nargs="+", default=None, help="run only these config names")
    ap.add_argument("--device", default="cuda")
    ap.add_argument("--force", action="store_true", help="rerun even if summary.json exists")
    a = ap.parse_args()

    configs = []
    if a.grid == "main":
        configs += main_grid()
    if a.grid == "ablation":
        configs += ablation_grid()
    if not a.grid:
        configs = main_grid() + ablation_grid()
    if a.only:
        configs = [c for c in configs if c.name in set(a.only)]
    if not configs:
        sys.exit("no configs selected")

    print(f"running {len(configs)} configs: {[c.name for c in configs]}", flush=True)
    for cfg in configs:
        done = (RESULTS / cfg.name / "summary.json").exists()
        if done and not a.force:
            print(f"[skip] {cfg.name} (summary.json exists)", flush=True)
            continue
        print(f"\n===== {cfg.name} ({cfg.model}, {cfg.modality}) =====", flush=True)
        try:
            run_experiment(cfg, device=a.device)
        except Exception:  # noqa: BLE001 - keep the grid going, log the failure
            print(f"[FAIL] {cfg.name}:\n{traceback.format_exc()}", flush=True)


if __name__ == "__main__":
    main()