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use serde::Serialize;

use crate::{
    config::Config,
    error::OpenAIError,
    steps::Steps,
    types::{
        AssistantEventStream, AssistantStreamEvent, CreateRunRequest, ListRunsResponse,
        ModifyRunRequest, RunObject, SubmitToolOutputsRunRequest,
    },
    Client,
};

/// Represents an execution run on a thread.
///
/// Related guide: [Assistants](https://platform.openai.com/docs/assistants/overview)
pub struct Runs<'c, C: Config> {
    pub thread_id: String,
    client: &'c Client<C>,
}

impl<'c, C: Config> Runs<'c, C> {
    pub fn new(client: &'c Client<C>, thread_id: &str) -> Self {
        Self {
            client,
            thread_id: thread_id.into(),
        }
    }

    ///  [Steps] API group
    pub fn steps(&self, run_id: &str) -> Steps<C> {
        Steps::new(self.client, &self.thread_id, run_id)
    }

    /// Create a run.
    pub async fn create(&self, request: CreateRunRequest) -> Result<RunObject, OpenAIError> {
        self.client
            .post(&format!("/threads/{}/runs", self.thread_id), request)
            .await
    }

    /// Create a run.
    pub async fn create_stream(
        &self,
        mut request: CreateRunRequest,
    ) -> Result<AssistantEventStream, OpenAIError> {
        if request.stream.is_some() && !request.stream.unwrap() {
            return Err(OpenAIError::InvalidArgument(
                "When stream is false, use Runs::create".into(),
            ));
        }

        request.stream = Some(true);

        Ok(self
            .client
            .post_stream_mapped_raw_events(
                &format!("/threads/{}/runs", self.thread_id),
                request,
                AssistantStreamEvent::try_from,
            )
            .await)
    }

    /// Retrieves a run.
    pub async fn retrieve(&self, run_id: &str) -> Result<RunObject, OpenAIError> {
        self.client
            .get(&format!("/threads/{}/runs/{run_id}", self.thread_id))
            .await
    }

    /// Modifies a run.
    pub async fn update(
        &self,
        run_id: &str,
        request: ModifyRunRequest,
    ) -> Result<RunObject, OpenAIError> {
        self.client
            .post(
                &format!("/threads/{}/runs/{run_id}", self.thread_id),
                request,
            )
            .await
    }

    /// Returns a list of runs belonging to a thread.
    pub async fn list<Q>(&self, query: &Q) -> Result<ListRunsResponse, OpenAIError>
    where
        Q: Serialize + ?Sized,
    {
        self.client
            .get_with_query(&format!("/threads/{}/runs", self.thread_id), query)
            .await
    }

    /// When a run has the status: "requires_action" and required_action.type is submit_tool_outputs, this endpoint can be used to submit the outputs from the tool calls once they're all completed. All outputs must be submitted in a single request.
    pub async fn submit_tool_outputs(
        &self,
        run_id: &str,
        request: SubmitToolOutputsRunRequest,
    ) -> Result<RunObject, OpenAIError> {
        self.client
            .post(
                &format!(
                    "/threads/{}/runs/{run_id}/submit_tool_outputs",
                    self.thread_id
                ),
                request,
            )
            .await
    }

    pub async fn submit_tool_outputs_stream(
        &self,
        run_id: &str,
        mut request: SubmitToolOutputsRunRequest,
    ) -> Result<AssistantEventStream, OpenAIError> {
        if request.stream.is_some() && !request.stream.unwrap() {
            return Err(OpenAIError::InvalidArgument(
                "When stream is false, use Runs::submit_tool_outputs".into(),
            ));
        }

        request.stream = Some(true);

        Ok(self
            .client
            .post_stream_mapped_raw_events(
                &format!(
                    "/threads/{}/runs/{run_id}/submit_tool_outputs",
                    self.thread_id
                ),
                request,
                AssistantStreamEvent::try_from,
            )
            .await)
    }

    /// Cancels a run that is `in_progress`
    pub async fn cancel(&self, run_id: &str) -> Result<RunObject, OpenAIError> {
        self.client
            .post(
                &format!("/threads/{}/runs/{run_id}/cancel", self.thread_id),
                (),
            )
            .await
    }
}