# curriculum_engine.py - V4.0 (Curriculum Oracle)
# Defines pedagogical boundaries according to the Israeli Ministry of Education (Mafmar).

import logging

logger = logging.getLogger(__name__)

CURRICULUM_RULES = {
    # grade: { blacklist: [operators], whitelist: [operators], descriptions: {operator: hebrew_name} }
    7: {
        "blacklist": ["SYSTEM_OF_EQUATIONS", "QUADRATIC_EQUATION", "DERIVATIVE", "INTEGRAL", "TRIGONOMETRY"],
        "whitelist": ["LINEAR_EQUATION", "FRACTIONS", "EXPONENTS_BASIC", "PERCENTAGES"],
        "descriptions": {
            "SYSTEM_OF_EQUATIONS": "מערכת משוואות בשני נעלמים",
            "QUADRATIC_EQUATION": "משוואה ריבועית",
            "DERIVATIVE": "נגזרות",
            "TRIGONOMETRY": "טריגונומטריה"
        }
    },
    8: {
        "blacklist": ["QUADRATIC_EQUATION", "DERIVATIVE", "INTEGRAL", "TRIG_Trig_ADVANCED"],
        "whitelist": ["LINEAR_EQUATION", "SYSTEM_OF_EQUATIONS", "BASIC_GEOMETRY", "PYTHAGOREAN_THEOREM"],
        "descriptions": {
            "QUADRATIC_EQUATION": "משוואה ריבועית",
            "DERIVATIVE": "נגזרות"
        }
    },
    9: {
        "blacklist": ["DERIVATIVE", "INTEGRAL", "LOGARITHM"],
        "whitelist": ["QUADRATIC_EQUATION", "SYSTEM_OF_EQUATIONS", "SIMILAR_TRIANGLES", "CIRCLE_BASIC"],
        "descriptions": {
            "DERIVATIVE": "נגזרות",
            "LOGARITHM": "לוגריתמים"
        }
    },
    10: {
        "blacklist": ["INTEGRAL_ADVANCED", "VECTORS"],
        "whitelist": ["DERIVATIVE_POLYNOMIAL", "TRIGONOMETRY_BASIC", "CIRCLE_EQUATION_BASIC"],
        "descriptions": {
            "INTEGRAL_ADVANCED": "אינטגרלים מורכבים",
            "VECTORS": "ווקטורים"
        }
    },
    # V286.0: Grade 11 — 4 יח"ל focus
    11: {
        "blacklist": ["VECTORS_3D", "ADVANCED_INTEGRATION", "SOLID_GEOMETRY_ADVANCED"],
        "whitelist": ["DERIVATIVE", "TRIGONOMETRY", "LOGARITHM", "SEQUENCES", "COMPLEX_NUMBERS_BASIC",
                      "FUNCTION_ANALYSIS", "PROBABILITY_BASIC", "CIRCLE_EQUATION"],
        "descriptions": {
            "VECTORS_3D": "וקטורים במרחב",
            "ADVANCED_INTEGRATION": "אינטגרציה מתקדמת"
        }
    },
    # V286.0: Grade 12 / 5 יח"ל — full access
    12: {
        "blacklist": [],
        "whitelist": ["DERIVATIVE", "INTEGRAL", "INTEGRAL_ADVANCED", "TRIGONOMETRY",
                      "TRIGONOMETRY_ADVANCED", "LOGARITHM", "SEQUENCES", "COMPLEX_NUMBERS",
                      "COMPLEX_ANALYSIS", "VECTORS", "VECTORS_3D", "FUNCTION_ANALYSIS",
                      "PROBABILITY", "COMBINATORICS", "SOLID_GEOMETRY", "LIMITS",
                      "OPTIMIZATION", "INDUCTION", "GEOMETRY_ANALYTIC", "CIRCLE_EQUATION"],
        "descriptions": {}
    }
}

def get_allowed_math_operators(grade_str: str, level: str = "4", topic: str = "GENERAL") -> dict:
    """
    Returns the pedagogical boundary rules for a specific student profile.
    
    Args:
        grade_str: Student grade (e.g. "7", "י", "י\"א")
        level: Units level for high school (3, 4, 5)
        topic: Current mathematical topic
        
    Returns:
        dict: { "allowed": [], "forbidden": [], "reason_map": {} }
    """
    # 1. Normalize grade
    from topic_taxonomy import _extract_grade_number
    grade_num = _extract_grade_number(grade_str)
    
    print(f"🎓 [CURRICULUM] Fetching rules for Grade {grade_num}, Level {level} units")
    
    rules = CURRICULUM_RULES.get(grade_num, {
        "blacklist": [],
        "whitelist": ["GENERAL"],
        "descriptions": {}
    })
    
    # 2. Add Level-specific tweaks (Epic V4.1+)
    if grade_num >= 10:
        if level == "3":
            rules["blacklist"].extend(["COMPLEX_ANALYSIS", "IMPLICIT_DERIVATIVE"])
        elif level == "5":
            rules["whitelist"].extend(["COMPLEX_ANALYSIS", "ADVANCED_CALCULUS"])
            
    return {
        "allowed": rules.get("whitelist", []),
        "forbidden": rules.get("blacklist", []),
        "reason_map": rules.get("descriptions", {})
    }

def is_operator_allowed(operator: str, grade_str: str, level: str = "4") -> bool:
    """Helper to check a single operator."""
    rules = get_allowed_math_operators(grade_str, level)
    if operator in rules["forbidden"]:
        return False
    return True

if __name__ == "__main__":
    # Test
    print(get_allowed_math_operators("7"))
    print(is_operator_allowed("DERIVATIVE", "7"))
    print(is_operator_allowed("SYSTEM_OF_EQUATIONS", "7"))
    print(is_operator_allowed("SYSTEM_OF_EQUATIONS", "8"))