Python-Projekte/sandbox/relationship.py

offset = 4

relation_first_grade = {
    'f': ['Ur-Ur-Großmutter', 'Ur-Großmutter', 'Großmutter', 'Mutter', 'ich', 'Tochter', 'Enkelin', 'Ur-Enkelin', 'Ur-Ur-Enkelin'],
    'm': ['Ur-Ur-Großvater', 'Ur-Großvater', 'Großvater', 'Vater', 'ich', 'Sohn', 'Enkel', 'Ur-Enkel', 'Ur-Ur-Enkel']
}

relation_higher_grade = {
    'f': ['Ur-Ur-Großtante', 'Ur-Großtante', 'Großtante', 'Tante', 'Cousine', 'Nichte', 'Großnichte', 'Ur-Großnichte', 'Ur-Ur-Großnichte'],
    'm': ['Ur-Ur-Großonkel', 'Ur-Großonkel', 'Großonkel', 'Onkel', 'Cousin', 'Neffe', 'Großneffe', 'Ur-Großneffe', 'Ur-Ur-Großneffe']
}


def relationship_name(subject, relative, gender):
    if gender != 'm':
        gender = 'f'
    s = subject.split('.')
    r = relative.split('.')
    delta = len(r) - len(s)

    if subject.startswith(relative) or relative.startswith(subject):
        return relation_first_grade[gender][delta + offset]
    common = relationship_grade(s, r)
    min_grade = min(len(s), len(r))
    grade = min_grade - common
    if delta == 0:
        grade = grade - 1
        if grade == 0:
            return 'Bruder' if (gender == 'm') else 'Schwester'
    if grade == 1:
        return relation_higher_grade[gender][delta + offset]
    return relation_higher_grade[gender][delta + offset] + f' {grade}. Grades'


def relationship_grade(s, r):
    min_grade = min(len(s), len(r))
    for i in range(min_grade):
        if s[i] != r[i]:
            return i
    return min_grade


def relationship_distance(subject, relative):
    s = subject.split('.')
    r = relative.split('.')
    common = relationship_grade(s, r)
    grade = len(s) + len(r) - (2 * common)
    return grade