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//!
//! Support for Slack Files API methods
//!

use rsb_derive::Builder;
use serde::{Deserialize, Serialize, Serializer};
use serde_with::skip_serializing_none;

use crate::models::*;
use crate::ratectl::*;
use crate::SlackClientSession;
use crate::{ClientResult, SlackClientHttpConnector};

impl<'a, SCHC> SlackClientSession<'a, SCHC>
where
    SCHC: SlackClientHttpConnector + Send,
{
    ///
    /// https://api.slack.com/methods/files.upload
    ///
    pub async fn files_upload(
        &self,
        req: &SlackApiFilesUploadRequest,
    ) -> ClientResult<SlackApiFilesUploadResponse> {
        self.http_session_api
            .http_post_form_urlencoded("files.upload", req, Some(&SLACK_TIER2_METHOD_CONFIG))
            .await
    }
}

#[skip_serializing_none]
#[derive(Debug, PartialEq, Clone, Serialize, Deserialize, Builder)]
pub struct SlackApiFilesUploadRequest {
    #[serde(serialize_with = "to_csv")]
    pub channels: Option<Vec<SlackChannelId>>,
    pub content: Option<String>,
    pub filename: Option<String>,
    pub filetype: Option<SlackFileType>,
    pub initial_comment: Option<String>,
    pub thread_ts: Option<SlackTs>,
    pub title: Option<String>,
}

#[skip_serializing_none]
#[derive(Debug, PartialEq, Clone, Serialize, Deserialize, Builder)]
pub struct SlackApiFilesUploadResponse {
    pub file: SlackFile,
}

fn to_csv<S: Serializer>(x: &Option<Vec<SlackChannelId>>, s: S) -> Result<S::Ok, S::Error>
where
    S: Serializer,
{
    match x {
        None => s.serialize_none(),
        Some(ids) => {
            let y: Vec<String> = ids.iter().map(|v| v.0.clone()).collect();
            y.join(",").serialize(s)
        }
    }
}