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use std::any::Any;

use anyhow::Result;

use crate::storage::mkvs::sync::{
    GetPrefixesRequest, GetRequest, IterateRequest, ProofResponse, ReadSync, SyncerError,
};

/// A no-op read syncer which doesn't support any of the required operations.
pub struct NoopReadSyncer;

impl ReadSync for NoopReadSyncer {
    fn as_any(&self) -> &dyn Any {
        self
    }

    fn sync_get(&mut self, _request: GetRequest) -> Result<ProofResponse> {
        Err(SyncerError::Unsupported.into())
    }

    fn sync_get_prefixes(&mut self, _request: GetPrefixesRequest) -> Result<ProofResponse> {
        Err(SyncerError::Unsupported.into())
    }

    fn sync_iterate(&mut self, _request: IterateRequest) -> Result<ProofResponse> {
        Err(SyncerError::Unsupported.into())
    }
}