# -*- coding: utf-8 -*-
"""sephirot_gen.py v2 — 十六质点世界修复合成数据引擎(全量重建版)
枚举空间 N = 16×64×32×4×27×27×5×5 = 2,388,787,200(与论文一致)
核心:Feistel 双射 + 同置换游走(cycle-walking)→ 索引空间均匀洗牌
     每行由索引确定性重建(断点安全、可验证)
用法:
  python sephirot_gen.py --smoke          # 100万行快速验证
  python sephirot_gen.py --full           # 全量23亿,16 workers
  python sephirot_gen.py --verify 50000   # 抽样重生成一致性校验
"""
import os, sys, json, gzip, time, math, hashlib, random, multiprocessing as mp

BASE   = os.path.dirname(os.path.abspath(__file__))
SEEDS  = os.path.join(BASE, "seeds.json")
DATA   = os.path.join(BASE, "data")
WORKERS = 16
SHARD_ROWS = 2_000_000           # 每分片行数
DIMS = [16, 64, 32, 4, 27, 27, 5, 5]
N = math.prod(DIMS)              # 2,388,787,200

with open(SEEDS, encoding="utf-8") as f:
    S = json.load(f)
SECTOR = S["sector"]; REGION = S["region"]
INSTR = S["instrument"]; FRAME = S["frame"]
LEXK = S["sephirot_keys"]; LEX = S["sephirot_lex"]
TOP = S["top_terms"]

MASTER_KEY = int.from_bytes(hashlib.sha256(
    b"worldfix-v2|corpus=61562415|sephirot=16").digest()[:8], "big")

STANCES = ["预防", "缓解", "修复", "再生"]
INTENS  = ["微调", "常规", "强化", "集中", "极限"]
HORIZON = ["即时", "季度", "年度", "五年", "世代"]

def feistel(x: int) -> int:
    """4轮 Feistel on 2^32(L=R=16bit),固定网络→双射"""
    l, r = (x >> 16) & 0xFFFF, x & 0xFFFF
    for rnd in range(4):
        f = ((r * 2654435761 + MASTER_KEY + rnd * 0x9E3779B9) ^ (r << 7)) & 0xFFFF
        l, r = r, (l ^ f) & 0xFFFF
    return (l << 16) | r

def shuffle_index(i: int) -> int:
    """同置换游走:i<N 映射到 [0,N) 的双射(修正版:单一定义网络)"""
    x = i
    while True:
        x = feistel(x)
        if x < N:
            return x

def decode(idx: int):
    """混合基解码 → 8字段"""
    out = []
    for d in reversed(DIMS):
        out.append(idx % d)
        idx //= d
    return tuple(reversed(out))   # s, sec, reg, st, ins, frm, it, hz

VERD = ("ALLOW", "REPAIR", "FALLBACK")

def make_row(order: int):
    """order=原始序号 → 确定性生成一行(任何进程任何时候结果一致)"""
    idx = shuffle_index(order)
    s, sec, reg, st, ins, frm, it, hz = decode(idx)
    rng = random.Random(idx ^ MASTER_KEY)
    k = LEXK[s % 16]
    lex = LEX[k]
    actor = lex[rng.randrange(len(lex))]
    term1 = TOP[(idx * 31 + order) % len(TOP)]
    term2 = INSTR[ins]
    term3 = FRAME[frm]
    rx = (f"[{k}] 面向{REGION[reg]}的{SECTOR[sec]}问题,以「{actor}」为核心姿态,"
          f"采用{term2}与{term3},在{HORIZON[hz]}视野内以{INTENS[it]}强度推进"
          f"{STANCES[st]}型干预;配套十六质点审计回路与有界回滚预算(≤3)。")
    # 治理模拟块
    roll = rng.random()
    if roll < 0.86:   v, kk = "ALLOW", 0
    elif roll < 0.97: v, kk = "REPAIR", 1 + rng.randrange(3)
    else:             v, kk = "FALLBACK", 3
    aid = f"{(idx * 2654435761) & 0xFFFFFFFFFFFF:012x}"
    return (f'{{"i":{order},"h":{idx},"s":{s},"sec":{sec},"reg":{reg},"st":{st},'
            f'"ins":{ins},"frm":{frm},"it":{it},"hz":{hz},'
            f'"key":"{k}","sector":"{SECTOR[sec]}","region":"{REGION[reg]}",'
            f'"stance":"{STANCES[st]}","instrument":"{term2}","frame":"{term3}",'
            f'"intensity":"{INTENS[it]}","horizon":"{HORIZON[hz]}",'
            f'"prescription":"{rx}","verdict":"{v}","strikes":{kk},"audit":"{aid}"}}')

# ──────────────────────── worker ────────────────────────
def worker(wid: int, lo: int, hi: int):
    wdir = os.path.join(DATA, f"w{wid:02d}")
    os.makedirs(wdir, exist_ok=True)
    mani = os.path.join(wdir, "manifest.json")
    pos = lo
    if os.path.exists(mani):
        try:
            p = int(json.load(open(mani))["pos"])
            if lo <= p <= hi:          # 越界/损坏清单不可信,静默丢弃
                pos = max(pos, p)
        except Exception:
            pass
    # 清理尾部未登记分片
    for fn in os.listdir(wdir):
        m = fn.endswith(".jsonl.gz") and fn.split("_")[2:]
        if fn.endswith(".part"):
            os.remove(os.path.join(wdir, fn))
    t0 = time.time(); cnt_since = 0
    while pos < hi:
        end = min(pos + SHARD_ROWS, hi)
        tmp = os.path.join(wdir, f"s{pos:012d}.jsonl.gz.part")
        fin = os.path.join(wdir, f"s{pos:012d}.jsonl.gz")
        with gzip.open(tmp, "wb", compresslevel=1) as gz:
            buf = []
            ap = buf.append
            for o in range(pos, end):
                ap(make_row(o))
                if len(buf) >= 20000:
                    gz.write(("\n".join(buf) + "\n").encode())
                    buf.clear()
            if buf:
                gz.write(("\n".join(buf) + "\n").encode())
        os.replace(tmp, fin)
        pos = end
        json.dump({"pos": pos, "hi": hi}, open(mani, "w"))
        cnt_since += SHARD_ROWS
        el = time.time() - t0
        # 日志写文件(避免stdout管道背压死锁)
        with open(os.path.join(wdir, "gen.log"), "a", encoding="utf-8") as lf:
            lf.write(f"[w{wid:02d}] {pos-lo}/{hi-lo} ({(pos-lo)/(hi-lo)*100:.2f}%) "
                     f"{cnt_since/max(el,1e-9):,.0f} r/s  t+{el:.0f}s\n")
    json.dump({"pos": pos, "hi": hi, "done": True}, open(mani, "w"))  # 收尾覆写,清掉陈旧/越界清单

def full():
    os.makedirs(DATA, exist_ok=True)
    chunk = N // WORKERS
    jobs = [(w, w * chunk, (w + 1) * chunk if w < WORKERS - 1 else N)
            for w in range(WORKERS)]
    t0 = time.time()
    with mp.Pool(WORKERS) as pool:
        pool.starmap(worker, jobs)
    print(f"FULL DONE {N:,} rows in {(time.time()-t0)/60:.1f} min")

def smoke(total=1_000_000):
    os.makedirs(DATA, exist_ok=True)
    chunk = total // WORKERS
    jobs = [(w, w * chunk, (w + 1) * chunk if w < WORKERS - 1 else total)
            for w in range(WORKERS)]
    t0 = time.time()
    with mp.Pool(WORKERS) as pool:
        pool.starmap(worker, jobs)
    print(f"SMOKE DONE {total:,} rows in {time.time()-t0:.1f}s")

def verify(n=50000):
    import itertools
    bad = 0
    rng = random.Random(7)
    samples = [rng.randrange(N) for _ in range(min(n, 5000))] + list(range(10))
    for o in samples:
        r1 = make_row(o)
        # 重算两次一致性
        if r1 != make_row(o):
            bad += 1
    # 双射性抽查:前100万索引无碰撞
    seen = set()
    dup = 0
    for o in range(1_000_000):
        h = shuffle_index(o)
        if h in seen:
            dup += 1
        seen.add(h)
    print(f"verify: 一致性坏行={bad}/{len(samples)}  百万抽样碰撞={dup}")
    print("VERIFY PASS" if bad == 0 and dup == 0 else "VERIFY FAIL")
    # 字段范围校验
    o = 123456789
    s, sec, reg, st, ins, frm, it, hz = decode(shuffle_index(o))
    assert 0 <= s < 16 and 0 <= sec < 64 and 0 <= reg < 32 and 0 <= st < 4 \
       and 0 <= ins < 27 and 0 <= frm < 27 and 0 <= it < 5 and 0 <= hz < 5
    print("decode ranges OK; N =", f"{N:,}")

if __name__ == "__main__":
    a = sys.argv[1] if len(sys.argv) > 1 else "--verify"
    if a == "--full":
        full()
    elif a == "--smoke":
        smoke(int(sys.argv[2]) if len(sys.argv) > 2 else 1_000_000)
    elif a == "--verify":
        verify(int(sys.argv[2]) if len(sys.argv) > 2 else 50000)
    else:
        print(__doc__)