//! Take a reference to the root message of a thread and return a stream of all
//! messages in the thread. This includes the root message and all replies.
//!
//! Implements the following methods:
//!
//! - [`Sbot::tangles_thread`]

use async_std::stream::Stream;
pub use kuska_ssb::api::dto::TanglesThread;

use crate::{error::GolgiError, messages::SsbMessageKVT, sbot::Sbot, utils};

impl Sbot {
    /// Call the `tanglesThread` RPC method. Returns messages in the form
    /// of KVTs (Key Value Timestamp).
    ///
    /// # Example
    ///
    /// ```rust
    /// use async_std::stream::StreamExt;
    /// use golgi::{
    ///     Sbot,
    ///     GolgiError,
    ///     api::tangles::TanglesThread,
    ///     sbot::Keystore
    /// };
    ///
    /// async fn tangle() -> Result<(), GolgiError> {
    ///     let mut sbot_client = Sbot::init(Keystore::Patchwork, None, None).await?;
    ///
    ///     let msg_key = "%kmXb3MXtBJaNugcEL/Q7G40DgcAkMNTj3yhmxKHjfCM=.sha256";
    ///
    ///     let args = TanglesThread::new(msg_key).keys_values(true, true);
    ///     let tangles_thread = sbot_client.tangles_thread(msg_id).await?;
    ///
    ///     tangles_thread.for_each(|msg| {
    ///         match msg {
    ///             Ok(kvt) => println!("msg kvt: {:?}", kvt),
    ///             Err(e) => eprintln!("error: {}", e),
    ///         }
    ///     }).await;
    ///
    ///     Ok(())
    /// }
    /// ```
    pub async fn tangles_thread(
        &mut self,
        args: TanglesThread,
    ) -> Result<impl Stream<Item = Result<SsbMessageKVT, GolgiError>>, GolgiError> {
        let mut sbot_connection = self.get_sbot_connection().await?;
        let req_id = sbot_connection
            .client
            .tangles_thread_req_send(&args)
            .await?;

        let thread_stream =
            utils::get_source_stream(sbot_connection.rpc_reader, req_id, utils::kvt_res_parse)
                .await;
        Ok(thread_stream)
    }
}