from project import db
from project.models import AdminUnit, AdminUnitMember, AdminUnitMemberRole


def upsert_admin_unit(unit_name, short_name=None):
    admin_unit = AdminUnit.query.filter_by(name=unit_name).first()
    if admin_unit is None:
        admin_unit = AdminUnit(name=unit_name)
        db.session.add(admin_unit)

    admin_unit.short_name = short_name
    return admin_unit


def get_admin_unit(unit_name):
    return AdminUnit.query.filter_by(name=unit_name).first()


def get_admin_unit_member_role(role_name):
    return AdminUnitMemberRole.query.filter_by(name=role_name).first()


def upsert_admin_unit_member_role(role_name, role_title, permissions):
    result = AdminUnitMemberRole.query.filter_by(name=role_name).first()
    if result is None:
        result = AdminUnitMemberRole(name=role_name)
        db.session.add(result)

    result.title = role_title
    result.remove_permissions(result.get_permissions())
    result.add_permissions(permissions)
    return result


def add_user_to_admin_unit(user, admin_unit):
    result = (
        AdminUnitMember.query.with_parent(admin_unit).filter_by(user_id=user.id).first()
    )
    if result is None:
        result = AdminUnitMember(user=user, admin_unit_id=admin_unit.id)
        admin_unit.members.append(result)
        db.session.add(result)
    return result


def add_user_to_admin_unit_with_roles(user, admin_unit, role_names):
    member = add_user_to_admin_unit(user, admin_unit)
    add_roles_to_admin_unit_member(member, role_names)

    return member


def add_roles_to_admin_unit_member(member, role_names):
    for role_name in role_names:
        role = get_admin_unit_member_role(role_name)
        add_role_to_admin_unit_member(member, role)


def add_role_to_admin_unit_member(admin_unit_member, role):
    if (
        AdminUnitMemberRole.query.with_parent(admin_unit_member)
        .filter_by(name=role.name)
        .first()
        is None
    ):
        admin_unit_member.roles.append(role)