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use tracing::{trace, debug};
use anyhow::{anyhow, Result};

use fluvio_controlplane_metadata::smartmodule::SmartModuleSpec;
use fluvio_socket::{VersionedSerialSocket, MultiplexerSocket, SerialFrame};

use crate::{
    objects::{
        ListFilter, Metadata, ListRequest, ObjectApiListRequest, COMMON_VERSION, ListResponse,
    },
    TryEncodableFrom,
};
pub use fluvio_socket::{ClientConfig, SocketError};

/// Experimental: this API is not finalized and may be changed in the future.
pub struct SmartModuleApiClient {
    socket: VersionedSerialSocket,
}

impl SmartModuleApiClient {
    pub async fn connect_with_config(config: ClientConfig) -> Result<Self> {
        let inner_client = config.connect().await?;
        debug!(addr = %inner_client.config().addr(), "connected to cluster");

        let (socket, config, versions) = inner_client.split();
        let socket = MultiplexerSocket::shared(socket);
        let versioned_socket = VersionedSerialSocket::new(socket, config, versions);

        Ok(Self {
            socket: versioned_socket,
        })
    }

    pub async fn get<F>(&self, name: F) -> Result<Option<SmartModuleSpec>>
    where
        ListFilter: From<F>,
    {
        let mut smartmodule_spec_list = self.list_with_params::<F>(vec![name], false).await?;
        Ok(smartmodule_spec_list.pop().map(|m| m.spec))
    }

    pub async fn list_with_params<F>(
        &self,
        filters: Vec<F>,
        summary: bool,
    ) -> Result<Vec<Metadata<SmartModuleSpec>>>
    where
        ListFilter: From<F>,
    {
        let filter_list: Vec<ListFilter> = filters.into_iter().map(Into::into).collect();
        let list_request: ListRequest<SmartModuleSpec> = ListRequest::new(filter_list, summary);

        let list_request = ObjectApiListRequest::try_encode_from(list_request, COMMON_VERSION)?;
        let response = self.socket.send_receive(list_request).await?;
        trace!("list response: {:#?}", response);
        Ok((response
            .downcast()?
            .ok_or(anyhow!("not smartmodule list"))? as ListResponse<SmartModuleSpec>)
            .inner())
    }
}