from datetime import datetime
from pathlib import Path
from typing import Any

from ariadne import ScalarType, load_schema_from_path, make_executable_schema
from ariadne import snake_case_fallback_resolvers
from ariadne.asgi import GraphQL

from app.graphql.context import get_context_value
from app.graphql.directives import IsAdminDirective, IsAuthenticatedDirective
from app.graphql.resolvers import audit_event, mutation, query

datetime_scalar = ScalarType("DateTime")


@datetime_scalar.serializer
def _serialize_datetime(value: Any) -> str:
    if isinstance(value, datetime):
        return value.isoformat()
    return str(value)


# Загрузить SDL-схему из файла (в Ariadne есть функция load_schema_from_path)
type_defs = load_schema_from_path(str(Path(__file__).parent / "schema.graphql"))

# Собрать исполняемую схему через `make_executable_schema`, передав:
schema = make_executable_schema(
    # типы;
    type_defs,
    # объекты `query` и `mutation` из `resolvers.py`;
    query,
    mutation,
    audit_event,
    datetime_scalar,
    snake_case_fallback_resolvers,
    # словарь директив `{"isAuthenticated": ..., "isAdmin": ...}`.
    directives={
        "isAuthenticated": IsAuthenticatedDirective,
        "isAdmin": IsAdminDirective,
    },
)

# Обернуть схему в ASGI-приложение `GraphQL(schema, context_value=..., debug=True)`.
graphql_app = GraphQL(schema, context_value=get_context_value, debug=True)