#!/usr/bin/env python3
"""How a Shadbala strength is shown (astrologer rulings 2026-10-03 甲13, BUG-1208).

First whether the planet meets the BPHS minimum (BPHS ch. 27 vv. 32-33, the
`shadbala.MIN_REQUIRED` table), then the site's own band (150/125/100/75/50 % of
that minimum -> 极强…极弱), labelled as the site's band. `shadbala.py` is in the
frozen rectification identity, so the fields are added here, at display time,
from values the engine already returns; nothing is recomputed.
"""

from __future__ import annotations

from typing import Any, Dict, Optional

LEVEL_SOURCE = 'site_band'
SITE_BAND_SUFFIX = '（网站分档）'
SITE_BAND_SUFFIX_EN = ' (site band)'
MEETS_ZH = '达到 BPHS 最低要求'
MISSES_ZH = '未达到 BPHS 最低要求'
MEETS_EN = 'meets the BPHS minimum'
MISSES_EN = 'below the BPHS minimum'


def _number(value: Any) -> Optional[float]:
    return float(value) if isinstance(value, (int, float)) and not isinstance(value, bool) else None


def minimum_fields(rupas: Any, min_required: Any, band: Any) -> Dict[str, Any]:
    """`min_required`, `meets_minimum`, `minimum_check`, band label and source."""
    total = _number(rupas)
    minimum = _number(min_required)
    meets = None if total is None or minimum is None else total >= minimum
    fields: Dict[str, Any] = {
        'min_required': minimum,
        'meets_minimum': meets,
        'minimum_check': None if meets is None else (MEETS_ZH if meets else MISSES_ZH),
        'level_source': LEVEL_SOURCE,
    }
    if band not in (None, ''):
        fields['level'] = f'{band}{SITE_BAND_SUFFIX}'
    return fields


def row_fields(row: Dict[str, Any]) -> Dict[str, Any]:
    """Display fields for one `shadbala.calc_shadbala` planet row."""
    return minimum_fields(row.get('total_rupas', row.get('rupas')), row.get('min_required'), row.get('strength_level'))


BAND_EN = {'极强': 'very strong', '强': 'strong', '充足': 'adequate', '略弱': 'slightly weak', '弱': 'weak', '极弱': 'very weak'}


def band_text(band: Any, language: str = 'zh') -> Optional[str]:
    if band in (None, ''):
        return None
    if language == 'en':
        return f"{BAND_EN.get(str(band), str(band))}{SITE_BAND_SUFFIX_EN}"
    return f'{band}{SITE_BAND_SUFFIX}'


def check_text(meets: Optional[bool], language: str = 'zh') -> str:
    if meets is None:
        return '-'
    if language == 'en':
        return MEETS_EN if meets else MISSES_EN
    return MEETS_ZH if meets else MISSES_ZH