"""Aggregate runs/full/<model>/<benchmark>/*.json into comparison tables.

- Per-benchmark macro-averaged metrics across that benchmark's tasks, per model.
- For multi-condition stratified view: average a chosen metric by n_cond.

Usage:
    PYTHONPATH=src python scripts/aggregate.py [runs_dir]
"""

from __future__ import annotations

import glob
import json
import os
import sys
from collections import defaultdict

RUNS = sys.argv[1] if len(sys.argv) > 1 else "runs/full"
HEADLINE = ["ndcg@10", "recall@10", "mrr@10", "recall@100"]


def load_reports(runs_dir):
    # model -> benchmark -> list[report]
    out = defaultdict(lambda: defaultdict(list))
    for path in glob.glob(os.path.join(runs_dir, "*", "*", "*.json")):
        if os.path.basename(path) == "summary.json":
            continue
        try:
            rep = json.load(open(path))
        except Exception:
            continue
        if "dense" not in rep:
            continue
        model = path.split(os.sep)[-3]
        bench = rep.get("benchmark") or path.split(os.sep)[-2]
        out[model][bench].append(rep)
    return out


def macro(reports, metric, stage="dense"):
    vals = [r[stage]["metrics"].get(metric) for r in reports if r.get(stage)]
    vals = [v for v in vals if v is not None]
    return sum(vals) / len(vals) if vals else None


def fmt(v):
    return f"{v:.4f}" if isinstance(v, float) else "  -   "


def main():
    data = load_reports(RUNS)
    if not data:
        print(f"(no results yet under {RUNS})")
        return
    benches = sorted({b for m in data.values() for b in m})
    models = sorted(data)

    for bench in benches:
        print(f"\n=== {bench} (macro over tasks) ===")
        print("model".ljust(12) + "".join(h.ljust(12) for h in HEADLINE) + "n_tasks")
        for m in models:
            reps = data[m].get(bench)
            if not reps:
                continue
            row = "".join(fmt(macro(reps, h)).ljust(12) for h in HEADLINE)
            print(m.ljust(12) + row + str(len(reps)))

    # stratified ndcg@10 by n_cond (MultiConIR / MERIT)
    print("\n=== ndcg@10 by #conditions ===")
    for bench in benches:
        dim = "n_cond"
        # collect per model: bucket -> [vals]
        per_model = {}
        for m in models:
            buckets = defaultdict(list)
            for r in data[m].get(bench, []):
                strat = r["dense"].get("stratified", {}).get(dim, {})
                for k, mm in strat.items():
                    if mm.get("ndcg@10") is not None:
                        buckets[k].append(mm["ndcg@10"])
            if buckets:
                per_model[m] = {k: sum(v) / len(v) for k, v in buckets.items()}
        if not per_model:
            continue
        keys = sorted({k for d in per_model.values() for k in d}, key=lambda x: float(x))
        print(f"\n[{bench}]")
        print("model".ljust(12) + "".join(str(k).ljust(8) for k in keys))
        for m, d in per_model.items():
            print(m.ljust(12) + "".join((f"{d[k]:.3f}" if k in d else "  -  ").ljust(8) for k in keys))


if __name__ == "__main__":
    main()