use effectful::{
    blocking::BlockingSpin,
    bound::{Bool, IsSend, IsSync},
    effective::{Canonical, Effective},
    environment::Environment,
    forward_send_sync,
};
use mockall::mock;
use treaty::{
    any::{type_name, AnyTrait},
    protocol::{
        visitor::{
            visit_recoverable, visit_sequence, DynRecoverableScope, DynSequenceScope, Recoverable,
            RecoverableScope, RequestHint, Sequence, SequenceScope, Value, VisitResult,
        },
        AsVisitor, DynVisitor, DynWalker,
    },
    Flow, Status,
};

mock! {
    pub RecoverableVisitor<E: Environment> {
        pub fn visit<'a, 'ctx>(&mut self, scope: DynRecoverableScope<'a, 'ctx, E>) -> VisitResult;
    }
}

forward_send_sync!({} {} {E: (Environment + Send)} MockRecoverableVisitor<E>);

// any_trait! {
//     impl['ctx][E] MockRecoverableVisitor<E> = [
//         RecoverableProto<E>
//     ] where
//         E: Environment,
// }

impl<'ctx, E: Environment + Send> Recoverable<'ctx, E> for MockRecoverableVisitor<E> {
    fn visit<'a>(
        &'a mut self,
        scope: DynRecoverableScope<'a, 'ctx, E>,
    ) -> Canonical<'a, VisitResult, E> {
        E::value(self.visit(scope)).cast()
    }
}

mock! {
    pub RecoverableScopeVisitor<E: Environment> {
        pub fn new_walk<'r, 'src>(&'r mut self, visitor: DynVisitor<'r, 'src, E>) -> Status;
    }
}

forward_send_sync!({} {} {E: (Environment + Send)} MockRecoverableScopeVisitor<E>);

impl<'ctx, E: Environment + Send> RecoverableScope<'ctx, E> for MockRecoverableScopeVisitor<E> {
    fn new_walk<'r>(&'r mut self, visitor: DynVisitor<'r, 'ctx, E>) -> Canonical<'r, Status, E> {
        E::value(self.new_walk(visitor)).cast()
    }
}

pub trait RecoverableVisitorExt<'ctx> {
    fn visit_recoverable_and_done<'a>(
        &'a mut self,
        scope: DynRecoverableScope<'a, 'ctx, BlockingSpin>,
    );
}

impl<'ctx, T> RecoverableVisitorExt<'ctx> for T
where
    T: AsVisitor<'ctx, BlockingSpin>,
{
    fn visit_recoverable_and_done<'a>(
        &'a mut self,
        scope: DynRecoverableScope<'a, 'ctx, BlockingSpin>,
    ) {
        let result = visit_recoverable(self.as_visitor(), scope).wait();

        assert_eq!(result, VisitResult::Control(Flow::Done));
    }
}