paapi5-nodejs-sdk-5
Version:
ProductAdvertisingAPI 5.0 NodeJS SDK
608 lines (556 loc) • 20.8 kB
JavaScript
/**
* Copyright 2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
/**
* Copyright 2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
*/
/**
* ProductAdvertisingAPI
* https://webservices.amazon.com/paapi5/documentation/index.html
*
*/
var awsv4 = require('./auth/SignHelper');
(function(root, factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['superagent', 'querystring'], factory);
} else if (typeof module === 'object' && module.exports) {
// CommonJS-like environments that support module.exports, like Node.
module.exports = factory(require('superagent'), require('querystring'));
} else {
// Browser globals (root is window)
if (!root.ProductAdvertisingAPIv1) {
root.ProductAdvertisingAPIv1 = {};
}
root.ProductAdvertisingAPIv1.ApiClient = factory(root.superagent, root.querystring);
}
}(this, function(superagent, querystring) {
'use strict';
/**
* @module ApiClient
* @version 1.0.0
*/
/**
* Manages low level client-server communications, parameter marshalling, etc. There should not be any need for an
* application to use this class directly - the *Api and model classes provide the public API for the service. The
* contents of this file should be regarded as internal but are documented for completeness.
* @alias module:ApiClient
* @class
*/
var exports = function() {
/**
* The base URL against which to resolve every API call's (relative) path.
* @type {String}
* @default https://webservices.amazon.com
*/
this.basePath = 'https://webservices.amazon.com'.replace(/\/+$/, '');
/**
* The Access Key ID which uniquely identifies you.
* @type {String}
*/
this.accessKey = null;
/**
* A key that is used in conjunction with the Access Key ID to cryptographically
* sign an API request.
* @type {String}
*/
this.secretKey = null;
/**
* The host that receives the Amazon Product Advertising API GenNext request.
* @type {String}
* @default webservices.amazon.com
*/
this.host = 'webservices.amazon.com';
/**
* The service's region where the request is targeted.
* @type {String}
* @default us-east-1
*/
this.region = 'us-east-1';
/**
* The authentication methods to be included for all API calls.
* @type {Array.<String>}
*/
this.authentications = {
};
/**
* The default HTTP headers to be included for all API calls.
* @type {Array.<String>}
* @default {}
*/
this.defaultHeaders = {};
/**
* The default HTTP timeout for all API calls.
* @type {Number}
* @default 60000
*/
this.timeout = 60000;
/**
* If set to false an additional timestamp parameter is added to all API GET calls to
* prevent browser caching
* @type {Boolean}
* @default true
*/
this.cache = true;
/**
* If set to true, the client will save the cookies from each server
* response, and return them in the next request.
* @default false
*/
this.enableCookies = false;
/*
* Used to save and return cookies in a node.js (non-browser) setting,
* if this.enableCookies is set to true.
*/
if (typeof window === 'undefined') {
this.agent = new superagent.agent();
}
/*
* Allow user to override superagent agent
*/
this.requestAgent = {
'User-Agent': 'paapi5-nodejs-sdk/1.2.1'
};
};
/**
* Returns a string representation for an actual parameter.
* @param param The actual parameter.
* @returns {String} The string representation of <code>param</code>.
*/
exports.prototype.paramToString = function(param) {
if (param == undefined || param == null) {
return '';
}
if (param instanceof Date) {
return param.toJSON();
}
return param.toString();
};
/**
* Builds full URL by appending the given path to the base URL and replacing path parameter place-holders with parameter values.
* NOTE: query parameters are not handled here.
* @param {String} path The path to append to the base URL.
* @param {Object} pathParams The parameter values to append.
* @returns {String} The encoded path with parameter values substituted.
*/
exports.prototype.buildUrl = function(path, pathParams) {
if (!path.match(/^\//)) {
path = '/' + path;
}
var url = "https://" + this.host + path;
var _this = this;
url = url.replace(/\{([\w-]+)\}/g, function(fullMatch, key) {
var value;
if (pathParams.hasOwnProperty(key)) {
value = _this.paramToString(pathParams[key]);
} else {
value = fullMatch;
}
return encodeURIComponent(value);
});
return url;
};
/**
* Checks whether the given content type represents JSON.<br>
* JSON content type examples:<br>
* <ul>
* <li>application/json</li>
* <li>application/json; charset=UTF8</li>
* <li>APPLICATION/JSON</li>
* </ul>
* @param {String} contentType The MIME content type to check.
* @returns {Boolean} <code>true</code> if <code>contentType</code> represents JSON, otherwise <code>false</code>.
*/
exports.prototype.isJsonMime = function(contentType) {
return Boolean(contentType != null && contentType.match(/^application\/json(;.*)?$/i));
};
/**
* Chooses a content type from the given array, with JSON preferred; i.e. return JSON if included, otherwise return the first.
* @param {Array.<String>} contentTypes
* @returns {String} The chosen content type, preferring JSON.
*/
exports.prototype.jsonPreferredMime = function(contentTypes) {
for (var i = 0; i < contentTypes.length; i++) {
if (this.isJsonMime(contentTypes[i])) {
return contentTypes[i];
}
}
return contentTypes[0];
};
/**
* Checks whether the given parameter value represents file-like content.
* @param param The parameter to check.
* @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
*/
exports.prototype.isFileParam = function(param) {
// fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
if (typeof require === 'function') {
var fs;
try {
fs = require('fs');
} catch (err) {}
if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
return true;
}
}
// Buffer in Node.js
if (typeof Buffer === 'function' && param instanceof Buffer) {
return true;
}
// Blob in browser
if (typeof Blob === 'function' && param instanceof Blob) {
return true;
}
// File in browser (it seems File object is also instance of Blob, but keep this for safe)
if (typeof File === 'function' && param instanceof File) {
return true;
}
return false;
};
/**
* Normalizes parameter values:
* <ul>
* <li>remove nils</li>
* <li>keep files and arrays</li>
* <li>format to string with `paramToString` for other cases</li>
* </ul>
* @param {Object.<String, Object>} params The parameters as object properties.
* @returns {Object.<String, Object>} normalized parameters.
*/
exports.prototype.normalizeParams = function(params) {
var newParams = {};
for (var key in params) {
if (params.hasOwnProperty(key) && params[key] != undefined && params[key] != null) {
var value = params[key];
if (this.isFileParam(value) || Array.isArray(value)) {
newParams[key] = value;
} else {
newParams[key] = this.paramToString(value);
}
}
}
return newParams;
};
/**
* Enumeration of collection format separator strategies.
* @enum {String}
* @readonly
*/
exports.CollectionFormatEnum = {
/**
* Comma-separated values. Value: <code>csv</code>
* @const
*/
CSV: ',',
/**
* Space-separated values. Value: <code>ssv</code>
* @const
*/
SSV: ' ',
/**
* Tab-separated values. Value: <code>tsv</code>
* @const
*/
TSV: '\t',
/**
* Pipe(|)-separated values. Value: <code>pipes</code>
* @const
*/
PIPES: '|',
/**
* Native array. Value: <code>multi</code>
* @const
*/
MULTI: 'multi'
};
/**
* Builds a string representation of an array-type actual parameter, according to the given collection format.
* @param {Array} param An array parameter.
* @param {module:ApiClient.CollectionFormatEnum} collectionFormat The array element separator strategy.
* @returns {String|Array} A string representation of the supplied collection, using the specified delimiter. Returns
* <code>param</code> as is if <code>collectionFormat</code> is <code>multi</code>.
*/
exports.prototype.buildCollectionParam = function buildCollectionParam(param, collectionFormat) {
if (param == null) {
return null;
}
switch (collectionFormat) {
case 'csv':
return param.map(this.paramToString).join(',');
case 'ssv':
return param.map(this.paramToString).join(' ');
case 'tsv':
return param.map(this.paramToString).join('\t');
case 'pipes':
return param.map(this.paramToString).join('|');
case 'multi':
// return the array directly as SuperAgent will handle it as expected
return param.map(this.paramToString);
default:
throw new Error('Unknown collection format: ' + collectionFormat);
}
};
/**
* Deserializes an HTTP response body into a value of the specified type.
* @param {Object} response A SuperAgent response object.
* @param {(String|Array.<String>|Object.<String, Object>|Function)} returnType The type to return. Pass a string for simple types
* or the constructor function for a complex type. Pass an array containing the type name to return an array of that type. To
* return an object, pass an object with one property whose name is the key type and whose value is the corresponding value type:
* all properties on <code>data<code> will be converted to this type.
* @returns A value of the specified type.
*/
exports.prototype.deserialize = function deserialize(response, returnType) {
if (response == null || returnType == null || response.status == 204) {
return null;
}
// Rely on SuperAgent for parsing response body.
// See http://visionmedia.github.io/superagent/#parsing-response-bodies
var data = response.body;
if (data == null || (typeof data === 'object' && typeof data.length === 'undefined' && !Object.keys(data).length)) {
// SuperAgent does not always produce a body; use the unparsed response as a fallback
data = response.text;
}
return exports.convertToType(data, returnType);
};
/**
* Invokes the REST service using the supplied settings and parameters.
* @param {String} path The base URL to invoke.
* @param {String} httpMethod The HTTP method to use.
* @param {Object.<String, String>} pathParams A map of path parameters and their values.
* @param {Object.<String, Object>} queryParams A map of query parameters and their values.
* @param {Object.<String, Object>} collectionQueryParams A map of collection query parameters and their values.
* @param {Object.<String, Object>} headerParams A map of header parameters and their values.
* @param {Object.<String, Object>} formParams A map of form parameters and their values.
* @param {Object} bodyParam The value to pass as the request body.
* @param {Array.<String>} authNames An array of authentication type names.
* @param {Array.<String>} contentTypes An array of request MIME types.
* @param {Array.<String>} accepts An array of acceptable response MIME types.
* @param {(String|Array|ObjectFunction)} returnType The required type to return; can be a string for simple types or the
* constructor for a complex type.
* @returns {Promise} A {@link https://www.promisejs.org/|Promise} object.
*/
exports.prototype.callApi = function callApi(path, httpMethod, apiName, pathParams,
queryParams, collectionQueryParams, headerParams, formParams, bodyParam, authNames, contentTypes, accepts,
returnType) {
// Throw error if credentials are not specified
if (this.accessKey === undefined || this.secretKey === undefined || this.accessKey === null || this.secretKey === null) {
throw new Error("Missing Credentials. Please specify accessKey and secretKey in client object.");
}
var _this = this;
var url = this.buildUrl(path, pathParams);
var request = superagent(httpMethod, url);
// apply authentications
var region = this.region
var service = 'ProductAdvertisingAPI';
var timestamp = Date.now();
var requestHeaders = {
'content-encoding': 'amz-1.0',
'content-type': 'application/json; charset=utf-8',
'host': this.host,
'x-amz-target': 'com.amazon.paapi5.v1.ProductAdvertisingAPIv1.' + apiName,
'x-amz-date': awsv4.toAmzDate(timestamp)
};
var authorizationHeader = awsv4.createAuthorizationHeader(this.accessKey, this.secretKey, requestHeaders, httpMethod, path, bodyParam, region, service, timestamp);
var authHeader = {
'Authorization': authorizationHeader
};
request.set(authHeader);
// set collection query parameters
for (var key in collectionQueryParams) {
if (collectionQueryParams.hasOwnProperty(key)) {
var param = collectionQueryParams[key];
if (param.collectionFormat === 'csv') {
// SuperAgent normally percent-encodes all reserved characters in a query parameter. However,
// commas are used as delimiters for the 'csv' collectionFormat so they must not be encoded. We
// must therefore construct and encode 'csv' collection query parameters manually.
if (param.value != null) {
var value = param.value.map(this.paramToString).map(encodeURIComponent).join(',');
request.query(encodeURIComponent(key) + "=" + value);
}
} else {
// All other collection query parameters should be treated as ordinary query parameters.
queryParams[key] = this.buildCollectionParam(param.value, param.collectionFormat);
}
}
}
// set query parameters
if (httpMethod.toUpperCase() === 'GET' && this.cache === false) {
queryParams['_'] = new Date().getTime();
}
// set header parameters
request.set(requestHeaders);
// set requestAgent if it is set by user
request.set(this.requestAgent);
// set request timeout
request.timeout(this.timeout);
var contentType = 'application/json; charset=utf-8';
if (contentType) {
// Issue with superagent and multipart/form-data (https://github.com/visionmedia/superagent/issues/746)
if(contentType != 'multipart/form-data') {
request.type(contentType);
}
} else if (!request.header['Content-Type']) {
request.type('application/json');
}
if (contentType === 'application/x-www-form-urlencoded') {
request.send(querystring.stringify(this.normalizeParams(formParams)));
} else if (contentType == 'multipart/form-data') {
var _formParams = this.normalizeParams(formParams);
for (var key in _formParams) {
if (_formParams.hasOwnProperty(key)) {
if (this.isFileParam(_formParams[key])) {
// file field
request.attach(key, _formParams[key]);
} else {
request.field(key, _formParams[key]);
}
}
}
} else if (bodyParam) {
request.send(bodyParam);
}
var accept = this.jsonPreferredMime(accepts);
if (accept) {
request.accept(accept);
}
if (returnType === 'Blob') {
request.responseType('blob');
} else if (returnType === 'String') {
request.responseType('string');
}
// Attach previously saved cookies, if enabled
if (this.enableCookies){
if (typeof window === 'undefined') {
this.agent.attachCookies(request);
}
else {
request.withCredentials();
}
}
return new Promise(function(resolve, reject) {
request.end(function(error, response) {
if (error) {
reject(error);
} else {
try {
var data = _this.deserialize(response, returnType);
if (_this.enableCookies && typeof window === 'undefined'){
_this.agent.saveCookies(response);
}
resolve({data: data, response: response});
} catch (err) {
reject(err);
}
}
});
});
};
/**
* Parses an ISO-8601 string representation of a date value.
* @param {String} str The date value as a string.
* @returns {Date} The parsed date object.
*/
exports.parseDate = function(str) {
return new Date(str.replace(/T/i, ' '));
};
/**
* Converts a value to the specified type.
* @param {(String|Object)} data The data to convert, as a string or object.
* @param {(String|Array.<String>|Object.<String, Object>|Function)} type The type to return. Pass a string for simple types
* or the constructor function for a complex type. Pass an array containing the type name to return an array of that type. To
* return an object, pass an object with one property whose name is the key type and whose value is the corresponding value type:
* all properties on <code>data<code> will be converted to this type.
* @returns An instance of the specified type or null or undefined if data is null or undefined.
*/
exports.convertToType = function(data, type) {
if (data === null || data === undefined)
return data
switch (type) {
case 'Boolean':
return Boolean(data);
case 'Integer':
return parseInt(data, 10);
case 'Number':
return parseFloat(data);
case 'String':
return String(data);
case 'Date':
return this.parseDate(String(data));
case 'Blob':
return data;
default:
if (type === Object) {
// generic object, return directly
return data;
} else if (typeof type === 'function') {
// for model type like: User
return type.constructFromObject(data);
} else if (Array.isArray(type)) {
// for array type like: ['String']
var itemType = type[0];
return data.map(function(item) {
return exports.convertToType(item, itemType);
});
} else if (typeof type === 'object') {
// for plain object type like: {'String': 'Integer'}
var keyType, valueType;
for (var k in type) {
if (type.hasOwnProperty(k)) {
keyType = k;
valueType = type[k];
break;
}
}
var result = {};
for (var k in data) {
if (data.hasOwnProperty(k)) {
var key = exports.convertToType(k, keyType);
var value = exports.convertToType(data[k], valueType);
result[key] = value;
}
}
return result;
} else {
// for unknown type, return the data directly
return data;
}
}
};
/**
* Constructs a new map or array model from REST data.
* @param data {Object|Array} The REST data.
* @param obj {Object|Array} The target object or array.
*/
exports.constructFromObject = function(data, obj, itemType) {
if (Array.isArray(data)) {
for (var i = 0; i < data.length; i++) {
if (data.hasOwnProperty(i))
obj[i] = exports.convertToType(data[i], itemType);
}
} else {
for (var k in data) {
if (data.hasOwnProperty(k))
obj[k] = exports.convertToType(data[k], itemType);
}
}
};
/**
* The default API client implementation.
* @type {module:ApiClient}
*/
exports.instance = new exports();
return exports;
}));