JSON to C# Class

import json
from typing import Any

def to_pascal_case(s: str) -> str:
    return ''.join(w.capitalize() for w in s.replace('-', '_').split('_'))

def cs_type(value: Any, key: str) -> str:
    if isinstance(value, bool):
        return "bool"
    if isinstance(value, int):
        return "int"
    if isinstance(value, float):
        return "double"
    if isinstance(value, str):
        return "string"
    if isinstance(value, list):
        if value:
            return f"List<{cs_type(value[0], key)}>"
        return "List<object>"
    if isinstance(value, dict):
        return to_pascal_case(key)
    return "object"

def generate_classes(data: dict, class_name: str, classes: list) -> None:
    props = []
    for k, v in data.items():
        prop_name = to_pascal_case(k)
        type_str = cs_type(v, k)
        if type_str == "string":
            type_str = "string?"
        props.append(f'    [JsonProperty("{k}")]')
        props.append(f'    public {type_str} {prop_name} {{ get; set; }}')
        if isinstance(v, dict):
            generate_classes(v, prop_name, classes)
    classes.append(f"public class {class_name}\n{{\n" + "\n".join(props) + "\n}")

json_str = '{"name": "Alice", "age": 30, "active": true}'
data = json.loads(json_str)
classes = []
generate_classes(data, "Root", classes)
print("\n\n".join(classes))