rentdynamics
Version:
Package to help facilitate communicating with the Rent Dynamics API
237 lines • 31.7 kB
JavaScript
/**
* Client is a convenience class for interacting with the Rent Dynamics services.
*
* Note if this class does not suit your needs, it may be wise to roll your own implementation using
* the {@linkcode ClientHelpers} class.
*/
export class Client {
constructor(options) {
this.helpers = new ClientHelpers(options);
}
/**
* get wraps a request library to work with the Rent Dynamics API.
* @param endpoint the path following the baseUrl.
* @example get('/foo');
*/
async get(endpoint) {
const fullUrl = this.helpers.baseUrl + endpoint;
const headers = await this.helpers.getHeaders(endpoint, undefined, this.authToken);
return fetch(fullUrl.replace(/\|/g, '%7C'), {
method: 'GET',
headers: Object.assign(Object.assign({}, headers), { 'Content-Type': 'application/json' })
});
}
/**
* put wraps a request library to work with the Rent Dynamics API.
* @param endpoint the path following the baseUrl.
* @param payload a JSON serializable object.
* @example put('/foo', { bar: 1 });
*/
async put(endpoint, payload) {
const fullUrl = this.helpers.baseUrl + endpoint;
const headers = await this.helpers.getHeaders(endpoint, payload, this.authToken);
return fetch(fullUrl, {
method: 'PUT',
headers: Object.assign(Object.assign({}, headers), { 'Content-Type': 'application/json' }),
body: JSON.stringify(payload)
});
}
/**
* post wraps a request library to work with the Rent Dynamics API.
* @param endpoint the path following the baseUrl.
* @param payload a JSON serializable object.
* @example post('/foo', { bar: 1 });
*/
async post(endpoint, payload) {
const fullUrl = this.helpers.baseUrl + endpoint;
const headers = await this.helpers.getHeaders(endpoint, payload, this.authToken);
return fetch(fullUrl, {
method: 'POST',
headers: Object.assign(Object.assign({}, headers), { 'Content-Type': 'application/json' }),
body: JSON.stringify(payload)
});
}
/**
* delete wraps a request library to work with the Rent Dynamics API.
* @param endpoint the path following the baseUrl.
* @example delete('/foo/1');
*/
async delete(endpoint) {
const fullUrl = this.helpers.baseUrl + endpoint;
const headers = await this.helpers.getHeaders(endpoint, undefined, this.authToken);
return fetch(fullUrl, {
method: 'DELETE',
headers: Object.assign(Object.assign({}, headers), { 'Content-Type': 'application/json' })
});
}
/**
* login enables an instance of {@linkcode Client} to make authenticated requests to the Rent
* Dynamics API.
*/
async login(username, password) {
const _password = await this.helpers.encryptPassword(password);
const endpoint = '/auth/login';
const result = await this.post(endpoint, { username, password: _password });
if (!result.ok) {
return result;
}
const { token } = await result.json();
this.authToken = token;
return result;
}
/** logout invalidates the users session generated by {@linkcode login}. */
async logout() {
const endpoint = '/auth/logout';
const result = await this.post(endpoint, { authToken: this.authToken });
if (!result.ok) {
return result;
}
this.authToken = undefined;
return result;
}
}
/** BASE_URL is a collection of base urls for each dev/prod Rent Dynamics service. */
export var BASE_URL;
(function (BASE_URL) {
BASE_URL["DEV_RD"] = "https://api.rentdynamics.dev";
BASE_URL["PROD_RD"] = "https://api.rentdynamics.com";
BASE_URL["DEV_RP"] = "https://api-dev.rentplus.com";
BASE_URL["PROD_RP"] = "https://api.rentplus.com";
})(BASE_URL || (BASE_URL = {}));
/** ClientOptions is consumed and updated by {@linkcode ClientHelpers}. */
export class ClientOptions {
constructor() {
/**
* baseUrl is the base request url. The default is the development rentdynamics api. A custom
* string may be provided beyond the {@linkcode BASE_URL} options.
*/
this.baseUrl = BASE_URL.DEV_RD;
/**
* getEncoder is used to encode text. The encoder can be overridden as needed. For example in a
* node environment.
* @example
* const options = new ClientOptions();
* options.getEncoder = async () => new (await import('util')).TextEncoder();
*/
this.getEncoder = async () => new TextEncoder();
/**
* getCryptographer is used for cryptography. The cryptographer can be overridden as needed. For
* example in a node environment.
* @example
* const options = new ClientOptions();
* options.getCryptographer = async () => (await import('crypto')).subtle;
*/
this.getCryptographer = async () => crypto.subtle;
}
}
/**
* ClientHelpers is a collection of utilities consumed by {@linkcode Client}. ClientHelpers can be
* used to calculate headers in case a consumer wants to build their own API client.
*/
export class ClientHelpers {
constructor(options) {
this.options = options;
}
/**
* baseUrl is the base url used throughout the {@linkcode ClientHelpers} instance. It is initially
* configured through {@linkcode ClientOptions}.
*/
get baseUrl() {
return this.options.baseUrl;
}
/**
* getTimestamp is used to calculate the timestamp header. This method is not likely to be called
* on it's own. Instead, it is typically used to mock the current time.
*/
getTimestamp() {
return Date.now();
}
/**
* getHeaders creates headers for the given params. If an auth token is included, this method will
* generate an `Authorization` header.
*/
async getHeaders(endpoint, payload, authToken) {
const headers = {};
if (this.options.apiKey && this.options.apiSecretKey) {
if (!payload || !Object.keys(payload).length) {
payload = undefined;
}
if (typeof payload !== 'undefined') {
payload = JSON.stringify(this.formatPayload(payload));
}
const timestamp = this.getTimestamp();
const nonce = await this.getNonce(timestamp, endpoint, payload);
if (authToken) {
headers.Authorization = 'TOKEN ' + authToken;
}
headers['x-rd-api-key'] = this.options.apiKey;
headers['x-rd-api-nonce'] = nonce;
headers['x-rd-timestamp'] = timestamp.toString();
return headers;
}
return headers;
}
/** formatPayload formats the payload for nonce calculation. */
formatPayload(payload) {
let formattedPayload = {};
if (payload === undefined || payload === null) {
formattedPayload = null;
}
else if (payload !== Object(payload)) {
formattedPayload = payload;
}
else if (Array.isArray(payload)) {
formattedPayload = [];
payload.forEach((_, index) => {
formattedPayload[index] = this.formatPayload(payload[index]);
});
}
else {
Object.keys(payload)
.sort()
.forEach(k => {
if (typeof payload[k] === 'object') {
formattedPayload[k] = this.formatPayload(payload[k]);
}
else if (typeof payload[k] === 'string') {
formattedPayload[k] = payload[k].replace(/ /g, '');
}
else {
formattedPayload[k] = payload[k];
}
});
}
return formattedPayload;
}
/** getNonce calculates the nonce for the given params. */
async getNonce(timestamp, url, payloadStr) {
if (!this.options.apiSecretKey)
return Promise.resolve('');
const encodedUrl = encodeURI(url)
.replace(/%7[Cc]/g, '|')
.replace(/%20/g, ' ');
const nonceStr = typeof payloadStr !== 'undefined'
? timestamp + encodedUrl + payloadStr
: timestamp + encodedUrl;
const cryptographer = await this.options.getCryptographer();
const encoder = await this.options.getEncoder();
const key = encoder.encode(this.options.apiSecretKey);
const data = encoder.encode(nonceStr);
const algorithm = { name: 'HMAC', hash: 'SHA-1' };
const hmac = await cryptographer.importKey('raw', key, algorithm, false, ['sign']);
const signed = await cryptographer.sign(algorithm.name, hmac, data);
return _hexDigest(signed);
}
/** encryptPassword encrypts the password for login. */
async encryptPassword(password) {
const cryptographer = await this.options.getCryptographer();
const encoder = await this.options.getEncoder();
const encodedPassword = encoder.encode(password);
const digestedPassword = await cryptographer.digest('SHA-1', encodedPassword);
return _hexDigest(digestedPassword);
}
}
const _hexDigest = (buf) => Array.from(new Uint8Array(buf))
.map(b => b.toString(16).padStart(2, '0'))
.join('');
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Payload is known as the \"body\" of a Request. The payload must be JSON serializable. */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ntype Payload = any;\n\n/**\n * Client is a convenience class for interacting with the Rent Dynamics services.\n *\n * Note if this class does not suit your needs, it may be wise to roll your own implementation using\n * the {@linkcode ClientHelpers} class.\n */\nexport class Client {\n  /**\n   * authToken if defined, authToken is used to make authenticated requests. Note authToken is not\n   * typically get/set manually, but instead is managed through the login/logout methods.\n   */\n  public authToken: string | undefined;\n  private readonly helpers: ClientHelpers;\n\n  constructor(options: ClientOptions) {\n    this.helpers = new ClientHelpers(options);\n  }\n\n  /**\n   * get wraps a request library to work with the Rent Dynamics API.\n   * @param endpoint the path following the baseUrl.\n   * @example get('/foo');\n   */\n  public async get(endpoint: string) {\n    const fullUrl = this.helpers.baseUrl + endpoint;\n    const headers = await this.helpers.getHeaders(endpoint, undefined, this.authToken);\n    return fetch(fullUrl.replace(/\\|/g, '%7C'), {\n      method: 'GET',\n      headers: {\n        ...headers,\n        'Content-Type': 'application/json'\n      }\n    });\n  }\n\n  /**\n   * put wraps a request library to work with the Rent Dynamics API.\n   * @param endpoint the path following the baseUrl.\n   * @param payload a JSON serializable object.\n   * @example put('/foo', { bar: 1 });\n   */\n  public async put(endpoint: string, payload: Payload) {\n    const fullUrl = this.helpers.baseUrl + endpoint;\n    const headers = await this.helpers.getHeaders(endpoint, payload, this.authToken);\n    return fetch(fullUrl, {\n      method: 'PUT',\n      headers: {\n        ...headers,\n        'Content-Type': 'application/json'\n      },\n      body: JSON.stringify(payload)\n    });\n  }\n\n  /**\n   * post wraps a request library to work with the Rent Dynamics API.\n   * @param endpoint the path following the baseUrl.\n   * @param payload a JSON serializable object.\n   * @example post('/foo', { bar: 1 });\n   */\n  public async post(endpoint: string, payload: Payload) {\n    const fullUrl = this.helpers.baseUrl + endpoint;\n    const headers = await this.helpers.getHeaders(endpoint, payload, this.authToken);\n    return fetch(fullUrl, {\n      method: 'POST',\n      headers: {\n        ...headers,\n        'Content-Type': 'application/json'\n      },\n      body: JSON.stringify(payload)\n    });\n  }\n\n  /**\n   * delete wraps a request library to work with the Rent Dynamics API.\n   * @param endpoint the path following the baseUrl.\n   * @example delete('/foo/1');\n   */\n  public async delete(endpoint: string) {\n    const fullUrl = this.helpers.baseUrl + endpoint;\n    const headers = await this.helpers.getHeaders(endpoint, undefined, this.authToken);\n    return fetch(fullUrl, {\n      method: 'DELETE',\n      headers: {\n        ...headers,\n        'Content-Type': 'application/json'\n      }\n    });\n  }\n\n  /**\n   * login enables an instance of {@linkcode Client} to make authenticated requests to the Rent\n   * Dynamics API.\n   */\n  public async login(username: string, password: string) {\n    const _password = await this.helpers.encryptPassword(password);\n    const endpoint = '/auth/login';\n    const result = await this.post(endpoint, { username, password: _password });\n    if (!result.ok) {\n      return result;\n    }\n    const { token } = await result.json();\n    this.authToken = token;\n    return result;\n  }\n\n  /** logout invalidates the users session generated by {@linkcode login}. */\n  public async logout() {\n    const endpoint = '/auth/logout';\n    const result = await this.post(endpoint, { authToken: this.authToken });\n    if (!result.ok) {\n      return result;\n    }\n    this.authToken = undefined;\n    return result;\n  }\n}\n\n/** BASE_URL is a collection of base urls for each dev/prod Rent Dynamics service. */\nexport enum BASE_URL {\n  DEV_RD = 'https://api.rentdynamics.dev',\n  PROD_RD = 'https://api.rentdynamics.com',\n  DEV_RP = 'https://api-dev.rentplus.com',\n  PROD_RP = 'https://api.rentplus.com'\n}\n\nexport type RdEncoder = Pick<TextEncoder, 'encode'>;\n\nexport type RdCryptographer = Pick<SubtleCrypto, 'importKey'> &\n  Pick<SubtleCrypto, 'sign'> &\n  Pick<SubtleCrypto, 'digest'>;\n\n/** ClientOptions is consumed and updated by {@linkcode ClientHelpers}. */\nexport class ClientOptions {\n  /** apiKey if defined apiKey is used to calculate auth headers. */\n  public apiKey: string | undefined;\n  /** apiSecretKey if defined apiSecretKey is used to calculate auth headers.  */\n  public apiSecretKey: string | undefined;\n  /**\n   * baseUrl is the base request url. The default is the development rentdynamics api. A custom\n   * string may be provided beyond the {@linkcode BASE_URL} options.\n   */\n  public baseUrl: BASE_URL | string = BASE_URL.DEV_RD;\n\n  /**\n   * getEncoder is used to encode text. The encoder can be overridden as needed. For example in a\n   * node environment.\n   * @example\n   * const options = new ClientOptions();\n   * options.getEncoder = async () => new (await import('util')).TextEncoder();\n   */\n  public getEncoder = async (): Promise<RdEncoder> => new TextEncoder();\n\n  /**\n   * getCryptographer is used for cryptography. The cryptographer can be overridden as needed. For\n   * example in a node environment.\n   * @example\n   * const options = new ClientOptions();\n   * options.getCryptographer = async () => (await import('crypto')).subtle;\n   */\n  public getCryptographer = async (): Promise<RdCryptographer> => crypto.subtle;\n}\n\n/**\n * ClientHelpers is a collection of utilities consumed by {@linkcode Client}. ClientHelpers can be\n * used to calculate headers in case a consumer wants to build their own API client.\n */\nexport class ClientHelpers {\n  private options: ClientOptions;\n\n  constructor(options: ClientOptions) {\n    this.options = options;\n  }\n\n  /**\n   * baseUrl is the base url used throughout the {@linkcode ClientHelpers} instance. It is initially\n   * configured through {@linkcode ClientOptions}.\n   */\n  get baseUrl() {\n    return this.options.baseUrl;\n  }\n\n  /**\n   * getTimestamp is used to calculate the timestamp header. This method is not likely to be called\n   * on it's own. Instead, it is typically used to mock the current time.\n   */\n  public getTimestamp() {\n    return Date.now();\n  }\n\n  /**\n   * getHeaders creates headers for the given params. If an auth token is included, this method will\n   * generate an `Authorization` header.\n   */\n  public async getHeaders(\n    endpoint: string,\n    payload?: Payload | undefined,\n    authToken?: string | undefined\n  ) {\n    const headers: Record<string, string> = {};\n    if (this.options.apiKey && this.options.apiSecretKey) {\n      if (!payload || !Object.keys(payload).length) {\n        payload = undefined;\n      }\n      if (typeof payload !== 'undefined') {\n        payload = JSON.stringify(this.formatPayload(payload));\n      }\n      const timestamp = this.getTimestamp();\n      const nonce = await this.getNonce(timestamp, endpoint, payload);\n      if (authToken) {\n        headers.Authorization = 'TOKEN ' + authToken;\n      }\n      headers['x-rd-api-key'] = this.options.apiKey;\n      headers['x-rd-api-nonce'] = nonce;\n      headers['x-rd-timestamp'] = timestamp.toString();\n      return headers;\n    }\n    return headers;\n  }\n\n  /** formatPayload formats the payload for nonce calculation. */\n  public formatPayload(payload: Payload): Payload {\n    let formattedPayload: Payload = {};\n    if (payload === undefined || payload === null) {\n      formattedPayload = null;\n    } else if (payload !== Object(payload)) {\n      formattedPayload = payload;\n    } else if (Array.isArray(payload)) {\n      formattedPayload = [];\n      payload.forEach((_, index) => {\n        formattedPayload[index] = this.formatPayload(payload[index]);\n      });\n    } else {\n      Object.keys(payload)\n        .sort()\n        .forEach(k => {\n          if (typeof payload[k] === 'object') {\n            formattedPayload[k] = this.formatPayload(payload[k]);\n          } else if (typeof payload[k] === 'string') {\n            formattedPayload[k] = payload[k].replace(/ /g, '');\n          } else {\n            formattedPayload[k] = payload[k];\n          }\n        });\n    }\n    return formattedPayload;\n  }\n\n  /** getNonce calculates the nonce for the given params. */\n  public async getNonce(timestamp: number, url: string, payloadStr?: string): Promise<string> {\n    if (!this.options.apiSecretKey) return Promise.resolve('');\n    const encodedUrl = encodeURI(url)\n      .replace(/%7[Cc]/g, '|')\n      .replace(/%20/g, ' ');\n    const nonceStr =\n      typeof payloadStr !== 'undefined'\n        ? timestamp + encodedUrl + payloadStr\n        : timestamp + encodedUrl;\n    const cryptographer = await this.options.getCryptographer();\n    const encoder = await this.options.getEncoder();\n    const key = encoder.encode(this.options.apiSecretKey);\n    const data = encoder.encode(nonceStr);\n    const algorithm = { name: 'HMAC', hash: 'SHA-1' };\n    const hmac = await cryptographer.importKey('raw', key, algorithm, false, ['sign']);\n    const signed = await cryptographer.sign(algorithm.name, hmac, data);\n    return _hexDigest(signed);\n  }\n\n  /** encryptPassword encrypts the password for login. */\n  public async encryptPassword(password: string) {\n    const cryptographer = await this.options.getCryptographer();\n    const encoder = await this.options.getEncoder();\n    const encodedPassword = encoder.encode(password);\n    const digestedPassword = await cryptographer.digest('SHA-1', encodedPassword);\n    return _hexDigest(digestedPassword);\n  }\n}\n\nconst _hexDigest = (buf: ArrayBuffer): string =>\n  Array.from(new Uint8Array(buf))\n    .map(b => b.toString(16).padStart(2, '0'))\n    .join('');\n"]}