#!/usr/bin/env python3
"""BUG-1186 (TASK-upstream-sync4-20261002 T4): the API yoga list is not cut to
ten, and an evaluated empty yoga module is not replaced by a chart preview.

Both methods read no handler state, so they are called unbound; no
``JyotishAPIHandler`` instance is forged (growth contract).
"""

from __future__ import annotations

import os
import sys
import types

SCRIPTS = os.path.join(os.path.dirname(__file__), '..', 'scripts')
if SCRIPTS not in sys.path:
    sys.path.insert(0, SCRIPTS)

from jyotish_api_server import JyotishAPIHandler  # noqa: E402


def _install(monkeypatch, name: str, **attrs) -> None:
    module = types.ModuleType(name)
    for key, value in attrs.items():
        setattr(module, key, value)
    monkeypatch.setitem(sys.modules, name, module)


def test_detect_yogas_returns_all_twelve(monkeypatch) -> None:
    rows = [{'name': f'Yoga {i}', 'planets': ['Jupiter']} for i in range(12)]
    _install(monkeypatch, 'pancha_mahapurusha', detect_pancha_mahapurusha=lambda planets: [])
    _install(monkeypatch, 'yoga_expansion', detect_all_yogas=lambda planets, asc: rows)

    result = JyotishAPIHandler._detect_yogas(None, {}, 0)

    # 原值: yogas[:10]，第 11、12 条被丢；新值: 12 条全部返回
    assert [row['name'] for row in result] == [f'Yoga {i}' for i in range(12)]


def _reading(yoga_module, chart_yogas):
    return {
        'chart': {'planets': {'Sun': {}}, 'ascendant': 'Aries', 'yogas': chart_yogas},
        'modules': {'yoga': yoga_module},
    }


def test_evaluated_empty_module_list_is_not_replaced_by_chart_preview() -> None:
    preview = [{'name': 'Stale preview yoga'}]
    normalized = JyotishAPIHandler._chart_from_full_reading(None, _reading({'yogas': []}, preview))
    assert normalized['yogas'] == []


def test_module_list_precedes_chart_preview_and_detected_yogas_is_second() -> None:
    module_rows = [{'name': f'M{i}'} for i in range(12)]
    preview = [{'name': 'Stale preview yoga'}]
    normalized = JyotishAPIHandler._chart_from_full_reading(None, _reading({'yogas': module_rows}, preview))
    assert normalized['yogas'] == module_rows

    detected = [{'name': 'Detected'}]
    normalized = JyotishAPIHandler._chart_from_full_reading(None, _reading({'detected_yogas': detected}, preview))
    assert normalized['yogas'] == detected

    normalized = JyotishAPIHandler._chart_from_full_reading(None, _reading({}, preview))
    assert normalized['yogas'] == preview