mod operation;

use giterated_models::{
    error::OperationError,
    object::{GiteratedObject, Object, ObjectRequestError},
    object_backend::ObjectBackend,
    operation::{GiteratedOperation, OperationState},
};
use std::fmt::Debug;

pub use operation::*;
mod value;
pub use value::*;
mod setting;
pub use setting::*;

use crate::{
    new_stack::{PluginState, Runtime},
    vtable::RuntimeVTable,
    AnyObject, AnyOperation,
};

/// A container for a callback pointer, used to provide an internal callback function or
/// state to a plugin when performing a callback.
#[derive(Clone, Copy)]
#[repr(C)]
pub struct CallbackPtr(*const ());

impl CallbackPtr {
    pub unsafe fn from_raw(callback: *const ()) -> Self {
        Self(callback)
    }
}

#[derive(Clone)]
#[repr(C)]
pub struct RuntimeState {
    pub vtable: RuntimeVTable,
}

impl RuntimeState {
    pub unsafe fn from_static() -> Self {
        let runtime = giterated_static_runtime::get_runtime_reference();

        let runtime = runtime.cast::<Box<Runtime>>().as_ref();

        runtime.state()
    }

    pub unsafe fn runtime_state() -> PluginState {
        let runtime = giterated_static_runtime::get_runtime_reference();

        PluginState::from_raw_ptr(giterated_static_runtime::get_runtime_reference().as_ptr())
    }
}

#[async_trait::async_trait(?Send)]
impl ObjectBackend for RuntimeState {
    async fn object_operation<O, D>(
        &self,
        object: O,
        _operation: &str,
        payload: D,
        _operation_state: &OperationState,
    ) -> Result<D::Success, OperationError<D::Failure>>
    where
        O: GiteratedObject + Debug + 'static,
        D: GiteratedOperation<O> + Debug + 'static,
        D::Success: Clone,
        D::Failure: Clone,
    {
        let _object = AnyObject::new(object);
        let _operation = AnyOperation::new(payload);

        todo!()
    }

    async fn get_object<O: GiteratedObject + Debug + 'static>(
        &self,
        object_str: &str,
        operation_state: &OperationState,
    ) -> Result<Object<O, Self>, OperationError<ObjectRequestError>> {
        let object = unsafe {
            (self.vtable.get_object)(
                Self::runtime_state(),
                object_str,
                &mut operation_state.clone(),
            )
        }?;

        let object = unsafe { object.cast::<O>() };

        panic!("object casted");

        Ok(unsafe { Object::new_unchecked(object, self.clone()) })
    }
}