# -*- coding: utf-8 -*-
"""炉层杂质预警特征工程冒烟脚本（Issue #70）。

直接运行 ``python _sanity_check.py`` 验证：模板资产可加载、引擎可对
合成时序产出完整特征向量、阈值 breach 可观测。零第三方依赖。
"""
import importlib.util
import os
import sys

# impurity-forecast 目录名含连字符，不能作为 Python 包名直接 import；
# 用 importlib 按文件路径加载为合法包 impurity_forecast（同 tests/_bootstrap.py）。
_PKG_DIR = os.path.dirname(os.path.abspath(__file__))


def _load_pkg(name, path):
    if name in sys.modules:
        return
    spec = importlib.util.spec_from_file_location(
        name, os.path.join(path, "__init__.py"),
        submodule_search_locations=[path])
    mod = importlib.util.module_from_spec(spec)
    sys.modules[name] = mod
    spec.loader.exec_module(mod)


_load_pkg("impurity_forecast", _PKG_DIR)

from impurity_forecast import FeatureEngine, load_feature_config  # noqa: E402

CONFIG = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                      "config", "features.template.yaml")


def main() -> int:
    cfg = load_feature_config(CONFIG)
    print(f"[OK] 模板特征配置加载: template={cfg.template} "
          f"version={cfg.version} features={len(cfg.specs)}")
    for line in FeatureEngine(cfg.specs).describe():
        print("   -", line)

    eng = FeatureEngine.from_template_config(CONFIG)
    # 合成 30 步温和时序（不触发 breach），验证预热后向量完整
    samples = [
        {"ts": i, "CLF-01.TEMP": 850.0, "CLF-01.CL2": 100.0,
         "CLF-01.PRES": 10.0, "CLF-01.BED": 60.0}
        for i in range(30)
    ]
    vecs = eng.transform(samples)
    last = vecs[-1]
    assert last.is_complete, "预热后特征向量应完整"
    assert eng.breach(last) == [], "温和时序不应触发 breach"
    print(f"[OK] transform: 30 步时序 → 末向量完整，缺失率={last.missing_rate:.2%}")

    # 合成急升温序列，验证阈值 breach 可观测
    hot = [{"ts": i, "CLF-01.TEMP": 850.0 + 8.0 * i, "CLF-01.CL2": 100.0,
            "CLF-01.PRES": 10.0, "CLF-01.BED": 60.0} for i in range(30)]
    hot_vecs = eng.transform(hot)
    breached = any(eng.breach(v) for v in hot_vecs)
    assert breached, "急升温序列应触发 breach"
    print("[OK] 急升温序列触发 breach（提前量信号可观测）")
    print("炉层杂质预警特征工程冒烟通过 ✅")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())