"""Issue #64: skip useless report subprocesses and observe the heavy-compute gate."""

from __future__ import annotations

import json
import logging
from pathlib import Path

import pytest

from scripts import api_heavy_compute_gate as gate
from scripts.annual_pyjhora_replay import (
    _run_isolated_annual_replay,
    _run_isolated_tajaka_year_lord,
    reset_jhora_import_cache,
)
from scripts.jyotish_engine import (
    _oracle_progress_snapshot,
    reset_oracle_progress_snapshot_cache,
)
from scripts.tajika import (
    _resolve_external_pyjhora_python,
    reset_external_pyjhora_python_cache,
)

ROOT = Path(__file__).resolve().parents[1]
FIXTURES = ROOT / "tests" / "fixtures" / "api-chart-subprocess-gate"


class _Place:
    name = "Delhi"
    latitude = 28.6139
    longitude = 77.209
    timezone = 5.5
    elevation = 0


_PROFILE = {"ayanamsa": "LAHIRI", "node_mode": "mean"}


def _without_hash(payload: dict) -> dict:
    body = dict(payload)
    body.pop("request_hash", None)
    return body


def test_no_jhora_tajaka_skips_subprocess_and_matches_golden(monkeypatch) -> None:
    reset_jhora_import_cache()
    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: False)

    def _forbid_subprocess(*_args, **_kwargs):
        raise AssertionError("subprocess.run must not run when jhora cannot be imported")

    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _forbid_subprocess)
    result = _run_isolated_tajaka_year_lord(_PROFILE, 2447893.0, _Place(), 30)
    golden = json.loads((FIXTURES / "tajaka-no-jhora.json").read_text(encoding="utf-8"))
    assert result["request_hash"]
    assert _without_hash(result) == golden


def test_no_jhora_annual_skips_subprocess_and_matches_golden(monkeypatch) -> None:
    reset_jhora_import_cache()
    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: False)

    def _forbid_subprocess(*_args, **_kwargs):
        raise AssertionError("subprocess.run must not run when jhora cannot be imported")

    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _forbid_subprocess)
    result = _run_isolated_annual_replay(_PROFILE, 2447893.0, _Place(), 30)
    golden = json.loads((FIXTURES / "annual-no-jhora.json").read_text(encoding="utf-8"))
    assert result["request_hash"]
    assert _without_hash(result) == golden


def test_jhora_available_still_uses_subprocess(monkeypatch) -> None:
    reset_jhora_import_cache()
    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: True)
    calls = {"n": 0}

    class _Completed:
        returncode = 0
        stdout = json.dumps({"status": "partial_verified", "settings": {}})

    def _fake_run(*_args, **_kwargs):
        calls["n"] += 1
        return _Completed()

    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _fake_run)
    tajaka = _run_isolated_tajaka_year_lord(_PROFILE, 2447893.0, _Place(), 30)
    annual = _run_isolated_annual_replay(_PROFILE, 2447893.0, _Place(), 30)
    assert calls["n"] == 2
    assert tajaka["request_hash"]
    assert annual["request_hash"]


def test_pyjhora_interpreter_lookup_is_cached(monkeypatch) -> None:
    reset_external_pyjhora_python_cache()
    calls = {"n": 0}

    def _missing():
        calls["n"] += 1
        return None

    monkeypatch.setattr("scripts.tajika._lookup_external_pyjhora_python", _missing)
    assert _resolve_external_pyjhora_python() is None
    assert _resolve_external_pyjhora_python() is None
    assert calls["n"] == 1


def test_oracle_progress_snapshot_reuses_until_the_file_changes(monkeypatch) -> None:
    reset_oracle_progress_snapshot_cache()
    calls = {"n": 0}
    real_run = __import__("subprocess").run

    def _counting_run(*args, **kwargs):
        calls["n"] += 1
        return real_run(*args, **kwargs)

    monkeypatch.setattr("subprocess.run", _counting_run)
    first = _oracle_progress_snapshot()
    after_first = calls["n"]
    assert after_first >= 1
    second = _oracle_progress_snapshot()
    assert calls["n"] == after_first
    assert second == first

    oracle = ROOT / "references" / "oracle" / "dasha_shadbala_oracle_cases.json"
    stat = oracle.stat()
    later = stat.st_mtime + 5
    try:
        oracle.touch()
        import os
        os.utime(oracle, (later, later))
        third = _oracle_progress_snapshot()
        assert calls["n"] > after_first
        assert third["scope"] == first["scope"]
    finally:
        os_utime = __import__("os").utime
        os_utime(oracle, (stat.st_atime, stat.st_mtime))
        reset_oracle_progress_snapshot_cache()


def test_chart_overview_gate_is_off_by_default(monkeypatch) -> None:
    monkeypatch.delenv(gate.ENV_GATE_CHART_OVERVIEW, raising=False)
    gate.reset_heavy_compute_gate(limit=1)
    held = gate.acquire_heavy_compute_slot("/api/high_rigor_workflow")
    assert held is not None
    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"year": 1990}) is None
    gate.release_heavy_compute_slot(held)
    assert gate.heavy_compute_status()["in_use"] == 0
    gate.reset_heavy_compute_gate()


def test_chart_overview_gate_only_sync_unskipped_requests(monkeypatch) -> None:
    monkeypatch.setenv(gate.ENV_GATE_CHART_OVERVIEW, "1")
    # 原值：reset(limit=1) 后第二次立刻 HeavyComputeBusy
    # 新值：wait_seconds=0
    # 原因：默认改为短排队；本测试仍锁「名额被占时同步排盘被拒绝」，等待行为不在这里
    gate.reset_heavy_compute_gate(limit=1, wait_seconds=0)
    body = {"year": 1990, "lat": 28.6, "lon": 77.2}
    slot = gate.acquire_heavy_compute_slot_for_request("/api/chart", body)
    assert slot is not None
    assert gate.heavy_compute_status() == {"limit": 1, "in_use": 1}
    with pytest.raises(gate.HeavyComputeBusy):
        gate.acquire_heavy_compute_slot_for_request("/api/chart", {"year": 1991})
    gate.release_heavy_compute_slot(slot)
    assert gate.heavy_compute_status()["in_use"] == 0
    assert gate.acquire_heavy_compute_slot_for_request(
        "/api/chart", {"skip_vedastro_main_entry_overview": True}
    ) is None
    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"async": True}) is None
    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"enqueue": 1}) is None
    assert "/api/chart" not in gate.HEAVY_COMPUTE_PATHS
    gate.reset_heavy_compute_gate()


def test_busy_log_names_holders_and_not_the_body(caplog) -> None:
    # 原值：reset(limit=1) 后拒绝日志立刻出现
    # 新值：wait_seconds=0
    # 原因：默认会先等 8 秒；本测试仍锁日志只有路径、没有请求正文
    gate.reset_heavy_compute_gate(limit=1, wait_seconds=0)
    held = gate.acquire_heavy_compute_slot("/api/professional_report_reference")
    assert held is not None
    secret_body = {"birth_date": "1990-01-01", "name": "must-not-appear"}
    with caplog.at_level(logging.WARNING, logger="jyotish.heavy_compute"):
        with pytest.raises(gate.HeavyComputeBusy):
            gate.acquire_heavy_compute_slot_for_request("/api/professional_report_reference", secret_body)
    text = caplog.text
    assert "/api/professional_report_reference" in text
    assert "1990-01-01" not in text
    assert "must-not-appear" not in text
    gate.release_heavy_compute_slot(held)
    assert gate.heavy_compute_status()["in_use"] == 0
    gate.reset_heavy_compute_gate()


def test_warm_consultation_still_skips_the_slot() -> None:
    gate.reset_heavy_compute_gate(limit=1)
    assert gate.acquire_heavy_compute_slot_for_request(
        "/api/consultation_workflow", {"consult_card_warm_only": True}
    ) is None
    assert gate.heavy_compute_status()["in_use"] == 0
    gate.reset_heavy_compute_gate()