trc-client-core/src/utils/xhr.js

The core of the TRC Client

import request from 'superagent';
import PromiseErrorHandler from 'trc-client-core/src/utils/PromiseErrorHandler';
import PromiseSuccessHandler from 'trc-client-core/src/utils/PromiseSuccessHandler';
var requests = {};

function simpleQuery (verb, url, query) {
    return new Promise(function(resolve, reject) {
        requests[url] = request[verb](url)
            .query(query)
            .end(function(err, response){
                if(!response) {
                    reject(err);
                } else if (response.ok) {
                    resolve(response.body, response);
                } else {
                    reject(response);
                }

                requests[url] = null;
            });
    });
}

function simplePost(verb, url, query) {
    return new Promise(function(resolve, reject) {
        request[verb](url)
            .send(query)
            .end(function(err, response){
                if(!response) {
                    reject(err);
                } else if (response.ok) {
                    resolve(response.body, response);
                } else {
                    reject(response);
                }
            });
    });
}

function fileUpload(url, name, file, onProgress) {
    return new Promise(function(resolve, reject) {
        var req = request
            .post(url)
            .attach(name, file, file.name)
            .end((err, response) => {
                if(!response) {
                    reject(err);
                } else if (response.ok) {
                    resolve(response.body);
                } else {
                    reject(response.body);
                }
            });

        if(onProgress) {
            req.on('progress', onProgress);
        }
    });
}

var xhr = {
    get: function (url, query) {
        return simpleQuery('get', url, query).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    post: function (url, query) {
        return simplePost('post', url, query).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    patch: function (url, query) {
        return simplePost('patch', url, query).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    put: function (url, query) {
        return simplePost('put', url, query).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    del: function (url, query) {
        return simpleQuery('del', url, query).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    upload: function (url, name, file, onProgress) {
        return fileUpload(url, name, file, onProgress).then(PromiseSuccessHandler, PromiseErrorHandler);
    },
    requests() {
        return requests;
    }
};



module.exports = xhr;