hellohello234/lib/Controllers/SimpleCalculatorController.js

Simple calculator API hosted on APIMATIC

/**
 * hellohello234
 *
 * This file was automatically generated by APIMATIC v2.0 ( https://apimatic.io )
 */

'use strict';

const _request = require('../Http/Client/RequestClient');
const _configuration = require('../configuration');
const _apiHelper = require('../APIHelper');
const _baseController = require('./BaseController');

class SimpleCalculatorController {
    /**
     * Calculates the expression using the specified operation.
     *
     * @param  {array}  input    Array with all options for search
     * @param {OperationTypeEnum} input['operation'] The operator to apply on the variables
     * @param {double} input['x'] The LHS value
     * @param {double} input['y'] The RHS value
     *
     * @callback    The callback function that returns response from the API call
     *
     * @returns {Promise}
     */
    static getCalculate(input, callback) {
        // create empty callback if absent
        const _callback = typeof callback === 'function' ? callback : () => undefined;

        // prepare query string for API call
        const _baseUri = _configuration.BASEURI;

        let _queryBuilder = `${_baseUri}${'/{operation}'}`;

        // process template parameters
        _queryBuilder = _apiHelper.appendUrlWithTemplateParameters(_queryBuilder, {
            operation: (input.operation !== null) ? input.operation : null,
        });

        // process query parameters
        _queryBuilder = _apiHelper.appendUrlWithQueryParameters(_queryBuilder, {
            x: input.x,
            y: input.y,
        });

        // validate and preprocess url
        const _queryUrl = _apiHelper.cleanUrl(_queryBuilder);

        // construct the request
        const _options = {
            queryUrl: _queryUrl,
            method: 'GET',
        };

        // build the response processing.
        return new Promise((_fulfill, _reject) => {
            _request(_options, (_error, _response, _context) => {
                let errorResponse;
                if (_error) {
                    errorResponse = _baseController.validateResponse(_context);
                    _callback(errorResponse.error, errorResponse.response, errorResponse.context);
                    _reject(errorResponse.error);
                } else if (_response.statusCode >= 200 && _response.statusCode <= 206) {
                    const _strResult = _response.body;
                    const _result = JSON.parse(_strResult);
                    _callback(null, _result, _context);
                    _fulfill(_result);
                } else {
                    errorResponse = _baseController.validateResponse(_context);
                    _callback(errorResponse.error, errorResponse.response, errorResponse.context);
                    _reject(errorResponse.error);
                }
            });
        });
    }

}

module.exports = SimpleCalculatorController;