Jesse_Chen
f224146348
Three-way-merge calculation modules and pl9-export into the product fork while keeping commercial API routes, Raman ayanamsa, and the consultation contract as a keypath superset. Co-authored-by: Cursor <cursoragent@cursor.com>
91 lines
3.8 KiB
Python
91 lines
3.8 KiB
Python
"""Shared Ashtottari applicability rule-family helpers.
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This module does not declare a single verified truth. It only centralizes the
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repo's current competing rule families so runtime surfaces can expose them
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consistently and audits can compare them without hidden drift.
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"""
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from __future__ import annotations
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from typing import Any
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RULE_FAMILY_MOON_NAKSHATRA_PLUS_PAKSHA = "moon_nakshatra_plus_paksha"
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RULE_FAMILY_RAHU_NOT_IN_KENDRA = "rahu_not_in_kendra"
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RULE_FAMILY_RAHU_FROM_LAGNA_LORD = "rahu_from_lagna_lord_kendra_trikona_plus_paksha_daynight"
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SHUKLA_PAKSHA_NAKSHATRAS = {0, 4, 6, 13, 20, 22}
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KRISHNA_PAKSHA_NAKSHATRAS = {3, 5, 7, 8, 9, 26}
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ALLOWED_RAHU_HOUSES_FROM_LAGNA_LORD = {4, 5, 7, 9, 10}
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KENDRA_HOUSES = {1, 4, 7, 10}
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def evaluate_moon_nakshatra_plus_paksha_rule(
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moon_nakshatra_index: int | None,
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is_shukla_paksha: bool | None,
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) -> tuple[bool, str]:
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if moon_nakshatra_index is None or is_shukla_paksha is None:
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return False, "Moon-nakshatra/Paksha rule needs moon_nakshatra_index and is_shukla_paksha."
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allowed = SHUKLA_PAKSHA_NAKSHATRAS if is_shukla_paksha else KRISHNA_PAKSHA_NAKSHATRAS
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if moon_nakshatra_index in allowed:
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return True, "Moon-nakshatra/Paksha rule matched the current whitelist."
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return False, "Moon-nakshatra/Paksha rule did not match the current whitelist."
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def evaluate_rahu_not_in_kendra_rule(rahu_house: int | None) -> tuple[bool, str]:
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if rahu_house is None:
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return False, "Rahu-not-in-Kendra rule needs rahu_house."
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if rahu_house not in KENDRA_HOUSES:
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return True, f"Rahu-not-in-Kendra rule matched: Rahu house {rahu_house} is outside 1/4/7/10."
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return False, f"Rahu-not-in-Kendra rule blocked: Rahu house {rahu_house} is in 1/4/7/10."
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def evaluate_rahu_from_lagna_lord_rule(birth_info: dict[str, Any]) -> tuple[bool, str]:
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birth_is_daytime = birth_info.get("birth_is_daytime")
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is_shukla = birth_info.get("is_shukla_paksha")
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rahu_sign_index = birth_info.get("rahu_sign_index")
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lagna_lord_sign_index = birth_info.get("lagna_lord_sign_index")
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missing = [
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name for name, value in (
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("birth_is_daytime", birth_is_daytime),
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("is_shukla_paksha", is_shukla),
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("rahu_sign_index", rahu_sign_index),
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("lagna_lord_sign_index", lagna_lord_sign_index),
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)
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if value is None
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]
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if missing:
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return False, f"Candidate Ashtottari rule needs {', '.join(missing)}."
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if birth_is_daytime and not is_shukla:
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pass
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elif (not birth_is_daytime) and is_shukla:
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pass
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else:
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return False, (
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"Candidate Ashtottari gate expects day birth in Krishna Paksha or "
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"night birth in Shukla Paksha."
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)
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house_from_lagna_lord = ((int(rahu_sign_index) - int(lagna_lord_sign_index)) % 12) + 1
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if house_from_lagna_lord not in ALLOWED_RAHU_HOUSES_FROM_LAGNA_LORD:
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return False, (
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"Rahu is not in Kendra/Trikona from the Lagna lord under the frozen candidate rule."
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)
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return True, (
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f"Candidate rule matched: {('day' if birth_is_daytime else 'night')} birth, "
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f"{'Krishna' if not is_shukla else 'Shukla'} Paksha, Rahu {house_from_lagna_lord}th from Lagna lord."
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)
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def evaluate_rule_family(rule_family: str, payload: dict[str, Any]) -> tuple[bool, str]:
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if rule_family == RULE_FAMILY_MOON_NAKSHATRA_PLUS_PAKSHA:
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return evaluate_moon_nakshatra_plus_paksha_rule(
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payload.get("moon_nakshatra_index"),
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payload.get("is_shukla_paksha"),
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)
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if rule_family == RULE_FAMILY_RAHU_NOT_IN_KENDRA:
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return evaluate_rahu_not_in_kendra_rule(payload.get("rahu_house"))
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if rule_family == RULE_FAMILY_RAHU_FROM_LAGNA_LORD:
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return evaluate_rahu_from_lagna_lord_rule(payload)
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return False, f"Unknown Ashtottari rule family: {rule_family}"
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