# ca_core/group_member.py

def add_group_member(cursor, group_id: int, member_id: int, role: str):
    # Verify group exists and is active
    cursor.execute("SELECT type, status FROM entity WHERE id=%s", (group_id,))
    row = cursor.fetchone()
    if not row or row["status"] != "active" or row["type"] != "group":
        raise ValueError("Invalid or inactive group")
    
    # Verify member exists and is active
    cursor.execute("SELECT status FROM entity WHERE id=%s", (member_id,))
    row = cursor.fetchone()
    if not row or row["status"] != "active":
        raise ValueError("Invalid or inactive member")

    cursor.execute(
        "INSERT INTO group_member (group_id, member_id, role) VALUES (%s, %s, %s)",
        (group_id, member_id, role)
    )


def remove_group_member(cursor, group_id: int, member_id: int):
    cursor.execute(
        "DELETE FROM group_member WHERE group_id=%s AND member_id=%s",
        (group_id, member_id)
    )


def get_groups_for_member(cursor, member_id: int):
    cursor.execute(
        "SELECT group_id, role FROM group_member WHERE member_id=%s",
        (member_id,)
    )
    return cursor.fetchall()


def get_members_of_group(cursor, group_id: int):
    cursor.execute(
        "SELECT member_id, role FROM group_member WHERE group_id=%s",
        (group_id,)
    )
    return cursor.fetchall()