function main()

in packages/slack/post.js [31:91]

• 41 lines of code
• 9 McCabe index (conditional complexity)

function main(params) {
    let errorMsg = checkParams(params);
    if (errorMsg) {
        return { error: errorMsg };
    }

    var body = {
        channel: params.channel,
        username: params.username || 'Simple Message Bot'
    };

    if (params.icon_emoji) {
        // guard against sending icon_emoji: undefined
        body.icon_emoji = params.icon_emoji;
    }

    if (params.as_user === true) {
        body.as_user = true;
    }

    if (params.text) {
        body.text = params.text;
    }

    if (params.attachments) {
        body.attachments = JSON.stringify(params.attachments);
    }

    if (params.token) {
        //
        // this allows us to support /api/chat.postMessage
        // e.g. users can pass params.url = https://slack.com/api/chat.postMessage
        //                 and params.token = <their auth token>
        //
        body.token = params.token;
    } else {
        //
        // the webhook api expects a nested payload
        //
        // notice that we need to stringify; this is due to limitations
        // of the formData npm: it does not handle nested objects
        //
        body = {
            payload: JSON.stringify(body)
        };
    }

    var promise = new Promise(function (resolve, reject) {
        needle.post(params.url, body, function (err, res, body) {
            if (err) {
                console.log('error: ', err, body);
                reject(err);
            } else {
                console.log('success: ', params.text, 'successfully sent');
                resolve();
            }
        });
    });

    return promise;
}