use giterated_models::{
    error::OperationError, object::ObjectRequestError, operation::OperationState,
};

use crate::{
    future::RuntimeFuture,
    new_stack::{PluginState, TypeMetadata},
    AnyFailure, AnyObject, AnySuccess, FFIBox,
};

#[derive(Clone, Copy)]
pub struct RuntimeVTable {
    pub(crate) runtime: PluginState,
    pub(crate) type_metadata: *const TypeMetadata,
    pub(crate) handle_fn: unsafe extern "C" fn(
        PluginState,
        FFIBox<str>,
        FFIBox<str>,
        FFIBox<str>,
        FFIBox<[u8]>,
        FFIBox<[u8]>,
    ) -> RuntimeFuture<
        Result<AnySuccess, OperationError<AnyFailure>>,
    >,
    pub(crate) get_object:
        unsafe extern "C" fn(
            PluginState,
            &str,
            *mut OperationState,
        ) -> Result<AnyObject, OperationError<ObjectRequestError>>,
}

unsafe impl Send for RuntimeVTable {}
unsafe impl Sync for RuntimeVTable {}

pub trait IntoRuntimeVtable {
    unsafe extern "C" fn handle(
        this: PluginState,
        object_kind: FFIBox<str>,
        operation_name: FFIBox<str>,
        object: FFIBox<str>,
        operation_payload: FFIBox<[u8]>,
        operation_state: FFIBox<[u8]>,
    ) -> RuntimeFuture<Result<AnySuccess, OperationError<AnyFailure>>>;

    unsafe extern "C" fn get_object(
        this: PluginState,
        object_str: &str,
        operation_state: *mut OperationState,
    ) -> Result<AnyObject, OperationError<ObjectRequestError>>;
}