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"""Assemble the Hugging Face dataset folder for Five Desks Code (candidate B): tasks, calibration and source.

The bug catalog itself (which line of which library was changed) is the answer key and is not published; the
builder scripts in source/codedesk/build reproduce it from the pinned library versions.

Usage: python3 scripts/build_dataset_code.py   (file copies only; reads calibration from reports/calibration-code)
"""

import collections
import glob
import json
import shutil
from pathlib import Path
from statistics import mean

ROOT = Path(__file__).resolve().parents[1]
DATA = ROOT / "codedesk" / "data"
OUT = ROOT / "dataset_code"
SELECTED = json.loads((ROOT / "reports" / "selection-code.json").read_text()) if (
    ROOT / "reports" / "selection-code.json").exists() else []

GROUP_LIBS = collections.defaultdict(set)
catalog = json.loads((DATA / "catalog.json").read_text())
for m in catalog:
    from_lib = m["lib"]
    GROUP_LIBS[m["domain"]].add(from_lib)

calib = collections.defaultdict(list)
for f in glob.glob(str(ROOT / "reports" / "calibration-code" / "*" / "episodes.jsonl")):
    for line in open(f):
        e = json.loads(line)
        calib[e["task_id"]].append(e["reward"])

shutil.rmtree(OUT, ignore_errors=True)
(OUT / "calibration").mkdir(parents=True)
for d in glob.glob(str(ROOT / "reports" / "calibration-code" / "*")):
    name = Path(d).name
    for fn in ["summary.json", "episodes.jsonl"]:
        if (Path(d) / fn).exists():
            shutil.copy(Path(d) / fn, OUT / "calibration" / f"{name}_{fn}")

per_lib = collections.Counter(m["lib"] for m in catalog)
with open(OUT / "tasks.jsonl", "w") as f:
    for task_id in sorted(calib) or SELECTED:
        rewards = calib.get(task_id, [])
        f.write(json.dumps({
            "task_id": task_id,
            "submitted_for_training": task_id in SELECTED,
            "qwen3_8_27b_mean_reward": round(mean(rewards), 3) if rewards else None,
            "qwen3_8_27b_rewards": rewards,
        }) + "\n")
(OUT / "libraries.json").write_text(json.dumps({"mutants_per_library": per_lib,
                                                 "libraries_per_domain": {k: sorted(v) for k, v in GROUP_LIBS.items()}},
                                                indent=1) + "\n")

src = OUT / "source"
shutil.copytree(ROOT / "codedesk", src / "codedesk", ignore=shutil.ignore_patterns(
    "__pycache__", "*.pyc", "data", "out", "sdists", "*.log"))
for item in ["requirements.lock", "scripts/calibrate_v2.py", "scripts/calibrate.py", "scripts/wsclient.py",
             "proxy_eval/run.py"]:
    (src / item).parent.mkdir(parents=True, exist_ok=True)
    shutil.copy(ROOT / item, src / item)
shutil.copy(ROOT / "card_code.md", OUT / "README.md")
print("dataset at", OUT, sorted(p.name for p in OUT.iterdir()))