"""anchor_cases.tsv 정답 열 재생성 — 입력 200개는 그대로, 답만 Python select_supine_anchor 로 다시 뽑는다.

사용: python gen_anchor_cases.py <in.tsv> <out.tsv>
행 형식: best<TAB>cm,nch,ch3,hit,tot,cap|...   (best='-' 는 재부착)
"""
import io, sys, math, os, types

# library/__init__.py 가 이 체크아웃에 없는 analysis 패키지를 import 해 깨진다 — 패키지 껍데기만 등록하고
# 필요한 모듈만 상대 import 로 읽는다(runners 등은 실제 파일에서 로드).
_root = r"C:\Projects\piezophantomtest\piezo-phantom-test"
for _name, _path in (("vesiscan_test", os.path.join(_root, "vesiscan_test")),
                     ("vesiscan_test.library", os.path.join(_root, "vesiscan_test", "library"))):
    _m = types.ModuleType(_name); _m.__path__ = [_path]; _m.__package__ = _name; sys.modules[_name] = _m
import vesiscan_test.library.alignment.alignment_selection as sel

src, dst = sys.argv[1], sys.argv[2]
raw = io.open(src, encoding="utf-8", newline="").read()
nl = "\r\n" if "\r\n" in raw else "\n"      # 원본 줄바꿈 유지 — diff 가 답 열만 보이게
lines = raw.splitlines()
out, changed, null_before, null_after, fallback = [], 0, 0, 0, 0
for line in lines:
    if not line.strip() or line.startswith("#"):
        out.append(line)
        continue
    best_old, recs_raw = line.split("\t", 1)
    recs = []
    for f in recs_raw.split("|"):
        cm, nch, ch3, hit, tot, cap = f.split(",")
        capv = float(cap) if cap not in ("nan", "") else math.nan
        recs.append(dict(align_cm=int(cm), nch=int(nch), ch3=ch3, ch3_hit=int(hit), ch3_tot=int(tot), cap_frac=capv))
    d = sel.select_supine_anchor(recs, tie="cap", offset_cm=0)
    best_new = "-" if d.align_cm is None else str(d.align_cm)
    if best_old == "-":
        null_before += 1
    if best_new == "-":
        null_after += 1
    if d.reasons and d.reasons[0] == sel.NO_CH3_FALLBACK_TAG:
        fallback += 1
    if best_new != best_old:
        changed += 1
        assert best_old == "-", f"non-reattach answer changed: {line}"
    out.append(best_new + "\t" + recs_raw)
io.open(dst, "w", encoding="utf-8", newline="").write(nl.join(out) + nl)
print(f"cases={sum(1 for l in lines if l.strip() and not l.startswith('#'))} reattach before={null_before} after={null_after} "
      f"fallback={fallback} changed={changed} -> {dst}")