Slack Web API client

Create a client instance

use slack_morphism::prelude::*;

let client = SlackClient::new( SlackClientHyperConnector::new()? );

Make Web API methods calls

For most of Slack Web API methods (except for OAuth methods, Incoming Webhooks and event replies) you need a Slack token to make a call. For simple bots you can have it in your config files, or you can obtain workspace tokens using Slack OAuth.

In the example below, we’re using a hardcoded Slack token, but don’t do that for your production bots and apps. You should securely and properly store all of Slack tokens.

use slack_morphism::prelude::*;

async fn example() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
   
    let client = SlackClient::new(SlackClientHyperConnector::new()?);
    
    // Create our Slack API token
    let token_value: SlackApiTokenValue = "xoxb-89.....".into();
    let token: SlackApiToken = SlackApiToken::new(token_value);
    
    // Create a Slack session with this token
    // A session is just a lightweight wrapper around your token
    // not to specify it all the time for series of calls.
    let session = client.open_session(&token);
    
    // Make your first API call (which is `api.test` here)
    let test: SlackApiTestResponse = session
            .api_test(&SlackApiTestRequest::new().with_foo("Test".into()))
            .await?;

    // Send a simple text message
    let post_chat_req =
        SlackApiChatPostMessageRequest::new("#general".into(),
               SlackMessageContent::new().with_text("Hey there!".into())
        );

    let post_chat_resp = session.chat_post_message(&post_chat_req).await?;

    Ok(())
}

Note that session is just an auxiliary lightweight structure that stores references to the token and the client to make easier to have series of calls for the same token. It doesn't make any network calls. There is no need to store it.

Another option is to use session is to use function run_in_session:

    // Sessions are lightweight and basically just a reference to client and token
    client
        .run_in_session(&token, |session| async move {
            let test: SlackApiTestResponse = session
                .api_test(&SlackApiTestRequest::new().with_foo("Test".into()))
                .await?;

            println!("{:#?}", test);

            let auth_test = session.auth_test().await?;
            println!("{:#?}", auth_test);

            Ok(())
        })
        .await?;